Forecast Discussions mentioning "ACARS", "MDCRS", "AIRCRAFT", "TAMDAR", or "AMDAR" received at FSL on 03/06/07


AREA FORECAST DISCUSSION
NWS SAN DIEGO CA
200 PM PST MON MAR 5 2007 .SYNOPSIS... ANOTHER WARM DAY TODAY UNDER WEAKENING HIGH PRESSURE WITH WEAK OFFSHORE FLOW. UPPER LEVEL LOW PRESSURE AND ONSHORE FLOW WILL BRING COOLER WEATHER MID WEEK WITH VARIABLE HIGH CLOUDS AT TIMES AND SOME RETURN OF THE MARINE LAYER. WARMER AGAIN FOR NEXT WEEKEND UNDER WEAK HIGH PRESSURE ALOFT AND WEAK OFFSHORE FLOW. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... WEAK OFFSHORE FLOW CONTINUES WITH ABOUT 3 MBS OFFSHORE BETWEEK KTPH AND KSAN AND 1.5 MBS OFFSHORE BETWEEN KIPL AND KSAN. TEMPERATURES ARE RUNNING ANYWHERE FROM 5 TO AS MUCH AS 15 DEGREES HIGHER THAN SUNDAY AFTERNOON AT THIS TIME. THE RIDGE OF HIGH PRESSURE OVER THE COAST IS WEAKING AND SLOWLY SHIFTING INLAND IN RESPONSE TO A WEAK TROUGH OF LOW PRESSURE THAT HAS MOVED TO OFF THE COAST. MODELS INDICATE THIS TROUGH WILL MOVE ONTO THE COAST OVER THE NEXT 2 DAYS BRINGING SOME COOLING ALONG WITH A RETURN OF THE MARINE LAYER WEST OF THE MOUNTAINS. OTHERWISE THIS TROUGH APPEARS TO BE TOO WEAK TO HAVE MUCH IMPACT ON THE AREA. MODELS INDICATE THE TROUGH WILL MOVE EAST OF THE AREA BY THURSDAY AS RIDGING TAKES PLACE OVER THE COAST. THIS RIDGE WILL LAST INTO THE WEEKEND AND EARLY NEXT WEEK BRINGING WARMING ALONG WITH A WEAK OFFSHORE FLOW TO THE AREA. && .AVIATION... 052100Z...ONLY AVIATION WEATHER CONCERN IS WILL FOG DEVELOP THIS EVENING/TONIGHT OVER NEAR SHORE WATERS/IMMEDIATE COAST. DEWPOINTS ARE JUST NOW STARTING TO SHOW BIG JUMPS ALONG THE COAST AS THE SEA BREEZE PUSHES INLAND. THERE IS 25-30 DEGREE TEMPERATURE GRADIENT BETWEEN WATER AND A FEW MILES INLAND THAT WILL CONTINUE TO DRIVE THE SEA BREEZE THROUGH AT LEAST 1600 PST/0000 UTC BUT INLAND PROGRESS AND VERTICAL EXTENT OF MARINE AIR WILL BE LIMITED. ACARS AND FOOTHILL/MOUNTAIN OBSERVATIONS SHOW THERE ARE STILL EAST WINDS 10-15 KT BETWEEN FL015-FL050. ASSUMING THE DEWPOINTS DO MAKE IT INTO THE 50S BELOW FL007 THERE MAY NOT BE ENOUGH TIME FOR RADIATIONAL COOLING TO LEAD TO SATURATION AS OPAQUE ALTO/CIRROSTRATUS CLOUDS ARE EXPECTED TO MOVE IN FROM THE SOUTHWEST BY 2200 PST/0600 UTC. FINALLY IF FOG DOES FORM IT SHOULD NOT LINGER INTO THE MORNING HOURS AT COASTAL AIRPORTS AS AFTER 0400 PST/1200 UTC...WEAK EASTERLY LAND BREEZES EXPECTED TO ADVECT IN DRIER DEWPOINTS AND ERODE/PUSH ANY FOG THAT DOES DEVELOP BACK OFFSHORE. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...NONE. PZ...NONE. && $$ PUBLIC...HORTON AVIATION/MARINE...BALFOUR NWS ON THE WEB AT WEATHER.GOV/SANDIEGO
AREA FORECAST DISCUSSION
NWS DODGE CITY KS
214 AM CST SUN MAR 4 2007 .DAYS 1-2... UPPER RIDGE REMIAINS FORECAST TO SLIDE EAST AND BACKING WINDS WILL ENHANCE DOWNSLOPE FLOW OVER THE NEXT 48 HOURS ACROSS THE WESTERN HIGH PLAINS. GFS/NAM/UKMET/ECMWF ALL ARE IN GENERALLY GOOD AGREEMENT PROGGING 85H TEMPS BETWEEN 8-12C BY 00Z TUESDAY AND WITH THIS IN MIND CURRENTLY SEE NO REASON WHY TEMPERATURES WILL NOT REBOUND BACK INTO THE 60S BY MONDAY...MINUS NEAR THE SNOWPACK. OVERALL THE NEAR TERM GRIDS LOOK IN GOOD SHAPE WITH WARMING TEMPS INTO THE 50S TODAY AND 60S ON MONDAY. .DAYS 3-7... MODELS SEEM TO BE IN GOOD AGREEMENT WITH ONSET OF OUR NEXT SHORT WAVE MOVING INTO THE REGION ON TUESDAY. THIS SYSTEM IS NOT EXPECTED TO BECOME DISORGANIZED UNTIL LATE WEDNESDAY NIGHT. ANY CHANCES OF LOW LEVEL MOISTURE ASSOCIATED WITH THIS SYSTEM DOES NOT LOOK VERY IMPRESSIVE AT THIS TIME...SO WILL KEEP THE FORECAST PERIOD DRY. THEN TOWARD THE END OF THE WEEK EXPECT DOWNSLOPING WINDS AHEAD OF THE NEXT FRONT ON THURSDAY WHICH WILL KEEP THE TEMPERATURES WARMER ON THURSDAY. DECIDED TO KEEP TEMPERATURES BEHIND THE FRONT A FEW DEGREES COOLER FOR FRIDAY THEN ANOTHER WARMING TREND IS EXPECTED TO DOMINATE THE REGION OVER THE NEXT WEEKEND WITH THE ONSET OF DOWNSLOPING FLOW. && .AVIATION... NORTHWEST WINDS WILL CONTINUE TO BECOME LIGHT AND VARIABLE THROUGHOUT THE NIGHT. THEN EXPECT WINDS TO BECOME WESTERLY AT ABOUT 15KTS AFTER 15Z. THERE WILL BE NO IMPACT TO AIRCRAFT OPERATIONS AS VFR VSBYS AND UNLIMITED CEILING ARE EXPECTED FOR THE NEXT 24 HOURS. && .PRELIMINARY POINT TEMPS/POPS... DDC 58 25 64 30 / 0 0 0 0 GCK 55 25 61 28 / 0 0 0 0 EHA 55 30 62 32 / 0 0 0 0 LBL 57 27 64 31 / 0 0 0 0 HYS 54 23 63 28 / 0 0 0 0 P28 58 27 68 32 / 0 0 0 0 && .DDC WATCHES/WARNINGS/ADVISORIES... NONE. && $$ FN18/31
AREA FORECAST DISCUSSION
NWS BALTIMORE MD/WASHINGTON DC
1010 AM EST SUN MAR 4 2007 .SHORT TERM... WATER VAPOR LOOP SHOWS A POSITIVELY TILTED TROUGH ELONGATING FROM THE MID ATLANTIC THROUGH THE PLAINS. ACARS 400-250MB WIND OBSERVATIONS REVEAL A 160-190KT SOUTHWESTERLY JET FROM THE PLAINS THROUGH THE MID ATLANTIC. 11Z SURFACE ANALYSIS PLACED A COLD FRONT FROM THE ATLANTIC WATERS SOUTHWEST THROUGH THE CAROLINAS. A 1034MB ANTICYCLONE DOMINATED TEXAS AND THE PLAINS. THE NEXT SYSTEM CONTINUES TO ORGANIZE ACROSS SOUTH CENTRAL CANADA. HAVE ALLOWED THE SNOW ADVISORY ACROSS THE MOUNTAINS TO EXPIRE. SNOW SHOWERS WILL BE DISSIPATING WITH A LOSS OF LOW LEVEL MOISTURE DEPTH DURING THE AFTERNOON. 12Z KIAD RAOB AND MORNING ACARS SOUNDINGS INDICATE SEVERAL INVERSIONS BETWEEN 5-10KFT WHICH HAS TRAPPED STRATO-CU EAST OF THE MOUNTAINS. WHILE MID MORNING MIXING MAY PRODUCE A FEW MORE CUMULUS...EXPECT THE SEE A DRYING TREND PROGRESS EAST OF THE MOUNTAINS DURING THE AFTERNOON AS UPSLOPE WANES TO THE WEST. MORNING OBSERVED SOUNDINGS WERE ALSO FAIRLY MIXED TO THE SURFACE...SO DONT EXPECT MUCH WARMING DURING THE DAY...INTO THE 40S ACROSS MANY LOCATIONS. 25-30KT WINDS ALOFT WILL MIX DOWN AS WIND GUSTS THROUGH THE AFTERNOON. && .HYDROLOGY... MAIN STEM FORECAST POINTS ARE ALL UNDER FLOOD STAGE. && .AVIATION... NORTHWEST WINDS WILL TEND TO GUST AROUND 25 KNOTS DURING THE DAYLIGHT HOURS UNDER SCT-BKN CUMULUS. && .MARINE... 00Z ETA/06Z GFS MOS AT THOMAS POINT INDICATE SUSTAINED WINDS WILL INCREASE TO 20KT TODAY. 06Z NAM/GFS PROXIMITY FORECAST SOUNDINGS INDICATE WIND GUST POTENTIAL OF 25 KNOTS TODAY. && .TIDES... CURRENT TIDAL DEPARTURES LESS THAN A FOOT ABOVE ASTRONOMICAL PREDICTIONS. THE LUNAR CYCLE IS AT A FULL MOON (100 PERCENT FULL). THE CHESAPEAKE BAY OPERATIONAL FORECAST SYSTEM INDICATES WATER LEVELS WILL FALL TO NEAR ASTRONOMICAL PREDICTIONS THROUGH TODAY. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 6 PM EST SUNDAY FOR ANZ530>537. && $$ SHORT TERM/HYDROLOGY/AVIATION/MARINE/TIDES...ROGOWSKI
AREA FORECAST DISCUSSION
NWS CLEVELAND OH
120 PM EST MON MAR 5 2007 .SHORT TERM UPADTE(THIS AFTERNOON) AREA OF SNOW SHOWERS CONTINUED TO MOVE SOUTHEAST AND JUST SOME SCATTERED SNOW SHOWERS OVER LAKE ERIE AND ALONG THE LAKESHORE. QUICK UP DATE TO LOWER CHANCES OF SNOW. WINDS WILL REMAIN GUSTY AND BLOWING SNOW STILL A PROBELM OVER THE SNOWBELT AREAS OF NORTHEAST OHIO AND NORTHWEST PA. WITH WIND GUSTS FROM 35 TO 40 MPH. && .AVIATION(18Z-18Z)... COLD FRONT WILL BE THROUGH SOUTHERN MOST TAF SITES (MFD CAK) SOON. SOME OPEN WATER ON LAKE ERIE BETWEEN THE ISLANDS AND CLE MAY ALLOW FOR SOME LAKE EFFECT SNOW SHOWERS TO DEVELOP DURING THE MID AFTRN AS COLDER AIR AT H8 BEGINS TO CROSS THE LAKE BUT THINK THAT SHALLOW INVERSION AND VERY DRY AIR UPSTREAM WILL LIMIT THE POTENTIAL FOR MUCH LAKE EFFECT. SLIGHTLY BETTER CHANCE AT YNG FOR LONGER PERIOD OF LAKE EFFECT SNOW SHOWERS INTO TONIGHT AS LAKE HURON ALSO CONTRIBUTES. LOOKS AS IF FETCH AND TRAJECTORY AS WELL AS ICE COVER WILL ALSO LIMIT LAKE EFFECT AT ERIE ALTHOUGH A FEW SNOW SHOWERS STILL POSSIBLE MID/LATE AFTRN. VFR ELSEWHERE AS DRY AND COLD ARCTIC AIR PUSHES SOUTH ACROSS LOWER GREAT LAKES. GUSTY WINDS WILL START TO DIMINISH BY DARK. && .SHORT TERM UPDATE(THIS AFTERNOON).... COLD FRONT OVER LAKE ERIE WILL CONTINUE MOVE SOUTH INTO THE LOCAL AREA. TAMDAR DATA THIS MORNING INDICATING PLENTY OF LOW LEVEL MOISTURE AND NORTHWEST WINDS FROM 25 TO 35 KNOTS. SNOW ACCUMULATIONS WILL RANGE FROM LESS THAN A HALF INCH IN MOST AREAS WITH 1 TO 3 INCHES OVER THE SNOWBELT COUNTIES OF NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA... WITH WINDS GUSTING AT TIMES TO AROUND 35 TO 40 MPH WILL CAUSE BLOWING AND DRIFTING SNOW. ONCE COLD FRONT GOES BY THE WINDS WILL SHIFT INTO THE NORTHWEST AND TEMPERATURES WILL FALL THROUGH THE 20S. && .SHORT TERM(TODAY-TUESDAY)... BLAST OF COLD ARCTIC AIR FOR THE 1ST PART OF THE WEEK. COLD FRONT MOVES THROUGH THIS MORNING. SOME SYNOPTIC SNOW ASSOCIATED WITH IT BUT TRANSITION TO LAKE EFFECT SNOW SHOWERS THIS AFTERNOON AND TONIGHT. RATHER LIMITED LOW LEVEL MOISTURE AND LOWERING INVERSION LATER THIS AFTERNOON SHOULD LIMIT SNOW FALL BUT NE OH AND NW PA SHOULD SEE LOCALLY 1 TO 3 INCHES. WINDS PICKING UP EVEN THIS MORNING WILL BE GUITE GUSTY BEHIND FRONT CAUSING BLOWING SNOW. DONT BELIEVE WIDESPREAD VSBY 1/4 MILE OR LESS WILL OCCUR NEEDED FOR A BLOWING SNOW ADVISORY BUT BLOWING SNOW WILL BE A PROBLEM FOR SNOW REMOVAL ESPECIALLY AREAS RECIEVING HEAVIER SNOW AMOUNTS. LAKE SNOW SHOWERS TAPER OFF TONIGHT. STILL LOCALLY AN INCH OR 2 NE AREA. TEMPERTURES WILL FALL TO AROUND 5 TO 10 DEGREES. HAVE WIND CHILL TEMPS NEAR -10 IN E. FEW LINGER SNOW FLURRIES NE TUESDAY MORNING BEFORE HIGH PRESSURE MOVE ACROSS THE FORECAST AREA. THE HIGH WILL BRING A BRIEF PERIOD OF FAIR WEATHER BEFORE ALBERTA CLIPPER BRINGS ANOTHER ROUND OF SNOW TUESDAY NIGHT INTO WEDNESDAY ALONG WITH A REENFORCEMENT OF COLD AIR. && .LONG TERM (TUE NIGHT THROUGH SUNDAY)... CLIPPER SYSTEM TUE NGT INTO WEDNESDAY ROUNDING INTO SHAPE AND LOOKING HEALTHIER. SINCE MODELS HAVE BEEN CONSISTENT ON THE TRACK OF SYSTEM I FEEL MORE CONFIDENT WE CAN GO WITH LIKELY POPS ALTHOUGH THE EXACT TRACK WILL STILL DETERMINE WHO GETS ANY ACCUMULATING SNOW. SYSTEM WILL HAVE LIMITED MOISTURE BUT DECENT DYNAMICS AND IF ATMOSPHERE BECOMES EVEN A LITTLE BIT UNSTABLE ALOFT WILL HAVE SOME LOCATIONS WHICH WILL AT LEAST SEE A FEW INCHES OF SNOW. MOST FAVORABLE LOCATION AT THIS TIME SEEMS TO BE NORTH CENTRAL TO NE OH BUT WILL HAVE TO WATCH AS WE GET CLOSER TO EVENT. REINFORCING PUSH OF COLDER AIR BEHIND CLIPPER ON WEDNESDAY AND IF THERE IS FRESH SNOW ON THE GROUND WEDNESDAY WILL BE ANOTHER COLD DAY WITH SUBREEZING TEMPS. RETURN FLOW DOES NOT DEVELOP UNTIL THURSDAY NIGHT/FRIDAY MORNING SO FRIDAY SHOULD BE THE DAY TEMPERATURES START TO REALLY REBOUND. GFS SEEMS A BIT COLD BUT ECMWF AND CANADIAN SEEM A BIT TOO WARM THURSDAY INTO FRIDAY. GFS ENSMEBLE MAX/MIN TEMPS HAVE A HUGE RANGE BY LATE WEEK AS MODEL STRUGGLES TO PIN DOWN COLD AIR VS WARM AIR SO RATHER THAN BEING AS WARM AS I WAS YESTERDAY WILL COMPROMISE MORE WITH COLDER SOLUTION AT LEAST THROUGH THURSDAY. SO IT SEEMS AS IF THE REAL WARM UP WILL HAVE TO WAIT UNTIL FRIDAY AND SATURDAY AND ALL MODELS A BIT FASTER WITH COLD FRONT ON SATURDAY SO THE WARMEST AIR MAY GET CUT OFF BEFORE REACHING THE FCST AREA BY SATURDAY ALTHOUGH EVEN BEHIND FRONT THE AIRMASS IS PACIFIC IN ORIGIN SO SHOULD STILL BE A RATHER MILD DAY SATURDAY. SHOWERS SEEM LIKELY AT SOME POINT FRI NGT INTO SATURDAY. BACK DOWN TO NEAR NORMAL TEMPS SATURDAY NIGHT INTO SUNDAY AND A FEW FLURRIES NOT OUT OF THE QUESTION AS TROUGH ALOFT EXITS. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...RIVER FLOOD WARNINGS REMAIN IN EFFECT FOR SCIOTO RIVER AT PROSPECT. GALE WARNING LAKE ERIE THROUGH THIS EVENING. PA...GALE WARNING LAKE ERIE THROUGH THIS EVENING. && $$ SHORT TERM...THOMPSON LONG TERM...KOSARIK AVIATION...KOSARIK
AREA FORECAST DISCUSSION
NWS CLEVELAND OH
1245 PM EST MON MAR 5 2007 .AVIATION(18Z-18Z)... COLD FRONT WILL BE THROUGH SOUTHERN MOST TAF SITES (MFD CAK) SOON. SOME OPEN WATER ON LAKE ERIE BETWEEN THE ISLANDS AND CLE MAY ALLOW FOR SOME LAKE EFFECT SNOW SHOWERS TO DEVELOP DURING THE MID AFTRN AS COLDER AIR AT H8 BEGINS TO CROSS THE LAKE BUT THINK THAT SHALLOW INVERSION AND VERY DRY AIR UPSTREAM WILL LIMIT THE POTENTIAL FOR MUCH LAKE EFFECT. SLIGHTLY BETTER CHANCE AT YNG FOR LONGER PERIOD OF LAKE EFFECT SNOW SHOWERS INTO TONIGHT AS LAKE HURON ALSO CONTRIBUTES. LOOKS AS IF FETCH AND TRAJECTORY AS WELL AS ICE COVER WILL ALSO LIMIT LAKE EFFECT AT ERIE ALTHOUGH A FEW SNOW SHOWERS STILL POSSIBLE MID/LATE AFTRN. VFR ELSEWHERE AS DRY AND COLD ARCTIC AIR PUSHES SOUTH ACROSS LOWER GREAT LAKES. GUSTY WINDS WILL START TO DIMINISH BY DARK. && .SHORT TERM UPDATE(THIS AFTERNOON).... COLD FRONT OVER LAKE ERIE WILL CONTINUE MOVE SOUTH INTO THE LOCAL AREA. TAMDAR DATA THIS MORNING INDICATING PLENTY OF LOW LEVEL MOISTURE AND NORTHWEST WINDS FROM 25 TO 35 KNOTS. SNOW ACCUMULATIONS WILL RANGE FROM LESS THAN A HALF INCH IN MOST AREAS WITH 1 TO 3 INCHES OVER THE SNOWBELT COUNTIES OF NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA... WITH WINDS GUSTING AT TIMES TO AROUND 35 TO 40 MPH WILL CAUSE BLOWING AND DRIFTING SNOW. ONCE COLD FRONT GOES BY THE WINDS WILL SHIFT INTO THE NORTHWEST AND TEMPERATURES WILL FALL THROUGH THE 20S. && .SHORT TERM(TODAY-TUESDAY)... BLAST OF COLD ARCTIC AIR FOR THE 1ST PART OF THE WEEK. COLD FRONT MOVES THROUGH THIS MORNING. SOME SYNOPTIC SNOW ASSOCIATED WITH IT BUT TRANSITION TO LAKE EFFECT SNOW SHOWERS THIS AFTERNOON AND TONIGHT. RATHER LIMITED LOW LEVEL MOISTURE AND LOWERING INVERSION LATER THIS AFTERNOON SHOULD LIMIT SNOW FALL BUT NE OH AND NW PA SHOULD SEE LOCALLY 1 TO 3 INCHES. WINDS PICKING UP EVEN THIS MORNING WILL BE GUITE GUSTY BEHIND FRONT CAUSING BLOWING SNOW. DONT BELIEVE WIDESPREAD VSBY 1/4 MILE OR LESS WILL OCCUR NEEDED FOR A BLOWING SNOW ADVISORY BUT BLOWING SNOW WILL BE A PROBLEM FOR SNOW REMOVAL ESPECIALLY AREAS RECIEVING HEAVIER SNOW AMOUNTS. LAKE SNOW SHOWERS TAPER OFF TONIGHT. STILL LOCALLY AN INCH OR 2 NE AREA. TEMPERTURES WILL FALL TO AROUND 5 TO 10 DEGREES. HAVE WIND CHILL TEMPS NEAR -10 IN E. FEW LINGER SNOW FLURRIES NE TUESDAY MORNING BEFORE HIGH PRESSURE MOVE ACROSS THE FORECAST AREA. THE HIGH WILL BRING A BRIEF PERIOD OF FAIR WEATHER BEFORE ALBERTA CLIPPER BRINGS ANOTHER ROUND OF SNOW TUESDAY NIGHT INTO WEDNESDAY ALONG WITH A REENFORCEMENT OF COLD AIR. && .LONG TERM (TUE NIGHT THROUGH SUNDAY)... CLIPPER SYSTEM TUE NGT INTO WEDNESDAY ROUNDING INTO SHAPE AND LOOKING HEALTHIER. SINCE MODELS HAVE BEEN CONSISTENT ON THE TRACK OF SYSTEM I FEEL MORE CONFIDENT WE CAN GO WITH LIKELY POPS ALTHOUGH THE EXACT TRACK WILL STILL DETERMINE WHO GETS ANY ACCUMULATING SNOW. SYSTEM WILL HAVE LIMITED MOISTURE BUT DECENT DYNAMICS AND IF ATMOSPHERE BECOMES EVEN A LITTLE BIT UNSTABLE ALOFT WILL HAVE SOME LOCATIONS WHICH WILL AT LEAST SEE A FEW INCHES OF SNOW. MOST FAVORABLE LOCATION AT THIS TIME SEEMS TO BE NORTH CENTRAL TO NE OH BUT WILL HAVE TO WATCH AS WE GET CLOSER TO EVENT. REINFORCING PUSH OF COLDER AIR BEHIND CLIPPER ON WEDNESDAY AND IF THERE IS FRESH SNOW ON THE GROUND WEDNESDAY WILL BE ANOTHER COLD DAY WITH SUBREEZING TEMPS. RETURN FLOW DOES NOT DEVELOP UNTIL THURSDAY NIGHT/FRIDAY MORNING SO FRIDAY SHOULD BE THE DAY TEMPERATURES START TO REALLY REBOUND. GFS SEEMS A BIT COLD BUT ECMWF AND CANADIAN SEEM A BIT TOO WARM THURSDAY INTO FRIDAY. GFS ENSMEBLE MAX/MIN TEMPS HAVE A HUGE RANGE BY LATE WEEK AS MODEL STRUGGLES TO PIN DOWN COLD AIR VS WARM AIR SO RATHER THAN BEING AS WARM AS I WAS YESTERDAY WILL COMPROMISE MORE WITH COLDER SOLUTION AT LEAST THROUGH THURSDAY. SO IT SEEMS AS IF THE REAL WARM UP WILL HAVE TO WAIT UNTIL FRIDAY AND SATURDAY AND ALL MODELS A BIT FASTER WITH COLD FRONT ON SATURDAY SO THE WARMEST AIR MAY GET CUT OFF BEFORE REACHING THE FCST AREA BY SATURDAY ALTHOUGH EVEN BEHIND FRONT THE AIRMASS IS PACIFIC IN ORIGIN SO SHOULD STILL BE A RATHER MILD DAY SATURDAY. SHOWERS SEEM LIKELY AT SOME POINT FRI NGT INTO SATURDAY. BACK DOWN TO NEAR NORMAL TEMPS SATURDAY NIGHT INTO SUNDAY AND A FEW FLURRIES NOT OUT OF THE QUESTION AS TROUGH ALOFT EXITS. && .CLE WATCHES/WARNINGS/ADVISORIES... OH...RIVER FLOOD WARNINGS REMAIN IN EFFECT FOR SCIOTO RIVER AT PROSPECT. GALE WARNING LAKE ERIE THROUGH THIS EVENING. PA...GALE WARNING LAKE ERIE THROUGH THIS EVENING. && $$ SHORT TERM...THOMPSON LONG TERM...KOSARIK AVIATION...KOSARIK

SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NWS LOS ANGELES/OXNARD CA
600 AM PST TUE MAR 6 2007 ...UPDATED PUBLIC DISCUSSION... .SHORT TERM...(TODAY-THU) LATEST SATELLITE IMAGERY INDICATED A FAIRLY WIDE BAND OF MID TO HIGH LEVEL CLOUDS CONTINUING TO MOVE ACROSS THE FORECAST AREA THIS MORNING. A SPOTTER CALLED IN FROM PALMDALE REPORTING A FEW DROPS HITTING THE GROUND. SO ADDED MENTION OF SPRINKLES FOR THE LA/VTU COUNTY MOUNTAINS AND THE ANTELOPE VALLEY. SHOULD BE TRACE AMOUNTS. WITH THE LOWER ATMOSPHERE AS DRY AS IT IS...NOT EXPECTING THIS TO LAST LONG. THERE WILL BE SOME VIRGA ACROSS THE SOUTHERN PORTIONS OF THE AREA. MODELS CONTINUE TO FEED HIGH CLOUDS ACROSS THE REGION THROUGH WED NIGHT IN MOST LOCATIONS. SFC PRESSURE GRADIENTS ARE TRENDING ONSHORE THIS MORNING...BUT LAX-DGT STILL -0.7MB. WRF CONTINUES THIS ONSHORE TREND TO NEAR +5 MB LATER TODAY. THIS SHOULD HELP TEMPS LOWER A FEW DEGREES ALONG THE COASTAL PLAIN TODAY COMPARED TO YESTERDAY. THERE COULD BE A FEW SITES ALONG THE LA COASTAL PLAIN TO REACH 80 DEGREES...BUT THE MAJORITY SHOULD BE IN THE 70S. LATEST PROFILERS AND ACARS SHOW A VERY SHALLOW INVERSION IN PLACE. THIS SHOULD BE SHORT LIVED AS COOLER AIR ADVECTS IN WITH ONSHORE FLOW. SOMETIMES DURING TRANSITIONS FROM OFFSHORE TO ONSHORE FLOW...POCKETS OF DENSE FOG COULD FORM ALONG THE IMMEDIATE COAST NEAR DAWN. HOWEVER DEWPOINT DEPRESSIONS ARE SO FAR APART THAT STRATUS DEVELOPMENT THIS MORNING IS NOT LIKELY. TEMPS WILL BE A FEW DEGREES COOLER JUST ABOUT EVERYWHERE TODAY. TEMPS WILL CONTINUE TO FALL ON WED AS THICKNESS LVLS AND SLIGHT INCREASE IN ONSHORE FLOW WILL KEEP TEMPS NEAR NORMAL WEDNESDAY WITH A BETTER CHANCE OF LOW CLOUDS TO AFFECT THE COASTAL AREAS FROM SAN LUIS OBISPO COUNTY SOUTH TO LA COUNTY. LOW CLOUDS SHOULD BE PATCHY IN NATURE AND COULD BE DENSE LATE TONIGHT INTO WED MORNING. THERE COULD BE SOME GUSTY NORTHWEST WINDS ACROSS THE SBA COUNTY MOUNTAINS AND SOUTH COAST BETWEEN 20 AND 30 MPH POSSIBLE WED AFTERNOON THROUGH THE OVERNIGHT HOURS. THURSDAY TEMPS SHOULD REMAIN SIMILAR TO WEDNESDAY WITH MAYBE A COUPLE OF DEGREES OF WARMING OVER THE VALLEYS AS BOUNDARY LAYER TEMPS WARM SLIGHTLY. .LONG TERM...(FRI-MON) AN UPPER LVL RIDGE WILL BEGIN TO BUILD IN FROM THE SOUTHWEST ON FRIDAY. BOTH GFS AND ECMWF KEEP RIDGE OVER SRN CAL THROUGH SUNDAY. THE GFS CONTINUES THIS PATTERN THROUGH MONDAY. SFC GRADIENTS BECOME OFFSHORE SAT THROUGH MON. THIS WILL TRANSLATE INTO WELL ABOVE NORMAL TEMPS THROUGH THE WEEKEND AND MONDAY WITH SOME GUSTY OFFSHORE WINDS. AT THIS TIME...LOOKS LIKE NO RAIN IN SITE FOR THE NEXT 10 DAYS. && .AVIATION... 06/1200Z VFR CONDITIONS WILL PREVAIL AT MOST AIRFIELDS THROUGHOUT THE DAY WITH ONLY SCT150-200 DECKS CONTINUING TO STREAM IN FROM THE SOUTHWEST. STILL MONITORING THE CENTRAL COAST...WHERE KSBP AND KSMX MAY SEE SOME MVFR VSBYS BEFORE 16Z. ELSEWHERE...LOW LEVELS ARE TOO DRY FOR STRATUS AND FOG FORMATION. COASTAL AIRFIELDS HAVE A BETTER CHANCE AT IFR CONDITIONS AFTER MIDNIGHT TONIGHT...AS ONSHORE FLOW WILL INCREASE MOISTURE IN THE AREA. KLAX WILL REMAIN VFR THROUGH THE DAY WITH ONLY HIGH CLOUDS STREAMING THROUGH THE AREA. TYPICAL WESTERLY SEABREEZE AROUND 10 TO 12 KT WILL FORM AROUND 20Z. STRATUS AND FOG ARE POSSIBLE BRINGING IFR CONDITIONS TO THE AIRFIELD LATE TONIGHT. KBUR WILL BE VFR WITH LIGHT SOUTHERLY WIND DEVELOPING AFTER 20Z. && .LOX WATCHES/WARNINGS/ADVISORIES... NONE && $$ PUBLIC...KAPLAN AVIATION...MEIER/RORKE WWW.WEATHER.GOV/LOSANGELES
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NWS LOS ANGELES/OXNARD CA
400 AM PST TUE MAR 6 2007 ...UPDATED FOR AVIATION DISCUSSION... .SHORT TERM...(TODAY-THU) LATEST SATELLITE IMAGERY INDICATED A FAIRLY WIDE BAND OF HIGH CLOUDS CONTINUING TO MOVE ACROSS THE FORECAST AREA THIS MORNING. MODELS CONTINUE TO FEED HIGH CLOUDS ACROSS THE REGION THROUGH WED NIGHT IN MOST LOCATIONS. SFC PRESSURE GRADIENTS ARE TRENDING ONSHORE THIS MORNING...BUT LAX-DGT STILL -0.7MB. WRF CONTINUES THIS ONSHORE TREND TO NEAR +5 MB LATER TODAY. THIS SHOULD HELP TEMPS LOWER A FEW DEGREES ALONG THE COASTAL PLAIN TODAY COMPARED TO YESTERDAY. THERE COULD BE A FEW SITES ALONG THE LA COASTAL PLAIN TO REACH 80 DEGREES...BUT THE MAJORITY SHOULD BE IN THE 70S. LATEST PROFILERS AND ACARS SHOW A VERY SHALLOW INVERSION IN PLACE. THIS SHOULD BE SHORT LIVED AS COOLER AIR ADVECTS IN WITH ONSHORE FLOW. SOMETIMES DURING TRANSITIONS FROM OFFSHORE TO ONSHORE FLOW...POCKETS OF DENSE FOG COULD FORM ALONG THE IMMEDIATE COAST NEAR DAWN. HOWEVER DEWPOINT DEPRESSIONS ARE SO FAR APART THAT STRATUS DEVELOPMENT THIS MORNING IS NOT LIKELY. TEMPS WILL BE A FEW DEGREES COOLER JUST ABOUT EVERYWHERE TODAY. TEMPS WILL CONTINUE TO FALL ON WED AS THICKNESS LVLS AND SLIGHT INCREASE IN ONSHORE FLOW WILL KEEP TEMPS NEAR NORMAL WEDNESDAY WITH A BETTER CHANCE OF LOW CLOUDS TO AFFECT THE COASTAL AREAS FROM SAN LUIS OBISPO COUNTY SOUTH TO LA COUNTY. LOW CLOUDS SHOULD BE PATCHY IN NATURE AND COULD BE DENSE LATE TONIGHT INTO WED MORNING. THERE COULD BE SOME GUSTY NORTHWEST WINDS ACROSS THE SBA COUNTY MOUNTAINS AND SOUTH COAST BETWEEN 20 AND 30 MPH POSSIBLE WED AFTERNOON THROUGH THE OVERNIGHT HOURS. THURSDAY TEMPS SHOULD REMAIN SIMILAR TO WEDNESDAY WITH MAYBE A COUPLE OF DEGREES OF WARMING OVER THE VALLEYS AS BOUNDARY LAYER TEMPS WARM SLIGHTLY. .LONG TERM...(FRI-MON) AN UPPER LVL RIDGE WILL BEGIN TO BUILD IN FROM THE SOUTHWEST ON FRIDAY. BOTH GFS AND ECMWF KEEP RIDGE OVER SRN CAL THROUGH SUNDAY. THE GFS CONTINUES THIS PATTERN THROUGH MONDAY. SFC GRADIENTS BECOME OFFSHORE SAT THROUGH MON. THIS WILL TRANSLATE INTO WELL ABOVE NORMAL TEMPS THROUGH THE WEEKEND AND MONDAY WITH SOME GUSTY OFFSHORE WINDS. AT THIS TIME...LOOKS LIKE NO RAIN IN SITE FOR THE NEXT 10 DAYS. && .AVIATION... 06/1200Z VFR CONDITIONS WILL PREVAIL AT MOST AIRFIELDS THROUGHOUT THE DAY WITH ONLY SCT150-200 DECKS CONTINUING TO STREAM IN FROM THE SOUTHWEST. STILL MONITORING THE CENTRAL COAST...WHERE KSBP AND KSMX MAY SEE SOME MVFR VSBYS BEFORE 16Z. ELSEWHERE...LOW LEVELS ARE TOO DRY FOR STRATUS AND FOG FORMATION. COASTAL AIRFIELDS HAVE A BETTER CHANCE AT IFR CONDITIONS AFTER MIDNIGHT TONIGHT...AS ONSHORE FLOW WILL INCREASE MOISTURE IN THE AREA. KLAX WILL REMAIN VFR THROUGH THE DAY WITH ONLY HIGH CLOUDS STREAMING THROUGH THE AREA. TYPICAL WESTERLY SEABREEZE AROUND 10 TO 12 KT WILL FORM AROUND 20Z. STRATUS AND FOG ARE POSSIBLE BRINGING IFR CONDITIONS TO THE AIRFIELD LATE TONIGHT. KBUR WILL BE VFR WITH LIGHT SOUTHERLY WIND DEVELOPING AFTER 20Z. && .LOX WATCHES/WARNINGS/ADVISORIES... NONE && $$ PUBLIC...KAPLAN AVIATION...MEIER/RORKE WWW.WEATHER.GOV/LOSANGELES
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NWS LOS ANGELES/OXNARD CA
310 AM PST TUE MAR 6 2007 .SHORT TERM...(TODAY-THU) LATEST SATELLITE IMAGERY INDICATED A FAIRLY WIDE BAND OF HIGH CLOUDS CONTINUING TO MOVE ACROSS THE FORECAST AREA THIS MORNING. MODELS CONTINUE TO FEED HIGH CLOUDS ACROSS THE REGION THROUGH WED NIGHT IN MOST LOCATIONS. SFC PRESSURE GRADIENTS ARE TRENDING ONSHORE THIS MORNING...BUT LAX-DGT STILL -0.7MB. WRF CONTINUES THIS ONSHORE TREND TO NEAR +5 MB LATER TODAY. THIS SHOULD HELP TEMPS LOWER A FEW DEGREES ALONG THE COASTAL PLAIN TODAY COMPARED TO YESTERDAY. THERE COULD BE A FEW SITES ALONG THE LA COASTAL PLAIN TO REACH 80 DEGREES...BUT THE MAJORITY SHOULD BE IN THE 70S. LATEST PROFILERS AND ACARS SHOW A VERY SHALLOW INVERSION IN PLACE. THIS SHOULD BE SHORT LIVED AS COOLER AIR ADVECTS IN WITH ONSHORE FLOW. SOMETIMES DURING TRANSITIONS FROM OFFSHORE TO ONSHORE FLOW...POCKETS OF DENSE FOG COULD FORM ALONG THE IMMEDIATE COAST NEAR DAWN. HOWEVER DEWPOINT DEPRESSIONS ARE SO FAR APART THAT STRATUS DEVELOPMENT THIS MORNING IS NOT LIKELY. TEMPS WILL BE A FEW DEGREES COOLER JUST ABOUT EVERYWHERE TODAY. TEMPS WILL CONTINUE TO FALL ON WED AS THICKNESS LVLS AND SLIGHT INCREASE IN ONSHORE FLOW WILL KEEP TEMPS NEAR NORMAL WEDNESDAY WITH A BETTER CHANCE OF LOW CLOUDS TO AFFECT THE COASTAL AREAS FROM SAN LUIS OBISPO COUNTY SOUTH TO LA COUNTY. LOW CLOUDS SHOULD BE PATCHY IN NATURE AND COULD BE DENSE LATE TONIGHT INTO WED MORNING. THERE COULD BE SOME GUSTY NORTHWEST WINDS ACROSS THE SBA COUNTY MOUNTAINS AND SOUTH COAST BETWEEN 20 AND 30 MPH POSSIBLE WED AFTERNOON THROUGH THE OVERNIGHT HOURS. THURSDAY TEMPS SHOULD REMAIN SIMILAR TO WEDNESDAY WITH MAYBE A COUPLE OF DEGREES OF WARMING OVER THE VALLEYS AS BOUNDARY LAYER TEMPS WARM SLIGHTLY. .LONG TERM...(FRI-MON) AN UPPER LVL RIDGE WILL BEGIN TO BUILD IN FROM THE SOUTHWEST ON FRIDAY. BOTH GFS AND ECMWF KEEP RIDGE OVER SRN CAL THROUGH SUNDAY. THE GFS CONTINUES THIS PATTERN THROUGH MONDAY. SFC GRADIENTS BECOME OFFSHORE SAT THROUGH MON. THIS WILL TRANSLATE INTO WELL ABOVE NORMAL TEMPS THROUGH THE WEEKEND AND MONDAY WITH SOME GUSTY OFFSHORE WINDS. AT THIS TIME...LOOKS LIKE NO RAIN IN SITE FOR THE NEXT 10 DAYS. && .AVIATION... NEW DISCUSSION AFTER 12Z TAF PACKAGE. && .LOX WATCHES/WARNINGS/ADVISORIES... NONE && $$ PUBLIC...KAPLAN AVIATION...MEIER/RORKE WWW.WEATHER.GOV/LOSANGELES
AREA FORECAST DISCUSSION...UPDATED
NWS JACKSONVILLE FL
946 AM EST TUE MAR 6 2007 .UPDATE...SFC HIGH PRES DOMINATES THE AREA WITH HIGH CENTER TO OUR NW. NORTHERLY FLOW IS CURRENTLY ABOUT 5-10 KT. ONLY A FEW-SCT CI EXPECTED DURING THE DAY AS THEY SPILL OVER A MID-UPPER LEVEL RIDGE OVER THE LOWER CONUS. WEAK SHORTWAVE NOTED OVER TX MOVING E EXPECTED TO WEAKEN AS IT MOVES INTO CONFLUENT FLOW ALOFT. COLD FRONT IS ANALYZED OVER THE CAROLINAS MOVING SWD. MODELS INDICATE THE FRONT WILL CONTINUE TO SINK SWD BUT BECOME MORE DIFFUSE AS IT ENTERS OUR NERN ZONES...WITH LLVL WINDS BECOMING NELY THIS AFTERNOON. ALREADY HAVE SEEN JAX SOUNDING INDICATING A STIFF NLY WIND AT 1-3 KFT AT 20-25 KT...WITH 13Z ACARS DATA SHOWING SIMILAR WINDS...SO HAVE INDICATED A BIT STRONGER WINDS IN COASTAL ZONES WHERE GRADIENT WILL BE STRONGER. DESPITE WEAK FRONT...MOSTLY SUNNY CONDS AND TEMPS SHOULD REACH THE MID 60S TO LOWER 70S AREA-WIDE. && .AVIATION...VFR CONDS WILL PREVAIL TODAY WITH PERHAPS SOME STRATO CU DEVELOPMENT LATER THIS AFTERNOON AS LLVL FLOW TURNS NE. MORE STRATO CU EXPECTED TONIGHT ESPECIALLY OUR ERN ZONES AS LLVL HIGH PRES CENTER MOVES OFFSHORE ADVECTING A TONGUE OF MOISTURE ON THE SRN SIDE. FOR NOW...WE HAVE ADVERTISED MVFR CIGS STARTING AROUND 06Z TONIGHT. LLWS THIS MORNING SHOULD BE QUICKLY WEAKENING AS MIXING COMMENCES. && .MARINE...BUOY REPORTS FROM 41008 AND 41012 SHOW NLY WINDS 12-14 KT WITH GUSTS TO 17 KT WITH SEAS OF 1-3 FT. THINK SURGE OF NELY FLOW WILL OCCUR A BIT LATER SO WILL INITIALIZE WINDS AND SEAS A BIT LOWER FOR THE UPDATE BUT STILL EXPECT WINDS UP TO 15 TO 20 KT AT TIMES THIS AFTERNOON ESPECIALLY THE NRN WATERS. && .FIRE WEATHER...NO CHANGES PLANNED FOR CURRENT RED FLAG WARNINGS. RH VALUES ALREADY DROPPING TO 35-45% OVER PORTIONS OF THE AREA. && .JAX WATCHES/WARNINGS/ADVISORIES... FL...RED FLAG WARNING UNTIL 7 PM EST THIS EVENING FOR ALACHUA-BAKER- BRADFORD-CLAY-COLUMBIA-DUVAL-FLAGLER-GILCHRIST-HAMILTON- MARION-NASSAU-PUTNAM-ST JOHNS-SUWANNEE-UNION. FIRE WEATHER WATCH WEDNESDAY AFTERNOON FOR COLUMBIA-GILCHRIST- HAMILTON-SUWANNEE. GA...RED FLAG WARNING UNTIL 6 PM EST THIS AFTERNOON FOR APPLING- ATKINSON-BACON-BRANTLEY-CHARLTON-CLINCH-COFFEE-ECHOLS-JEFF DAVIS-PIERCE-WARE-WAYNE. AM...NONE. && $$ SHASHY/KEEGAN