Aikyam-Lab/Synoptic-Bench huggingface dataset:
935 AM MST THU MAR 19 2015 CLOUDY CONDITIONS AND COOLER TEMPERATURES WILL BE IN OUR AREA THROUGH TODAY. LATEST RAP ANALYSIS SHOWS THE CENTER OF THE MID- TROPOSPHERIC TROUGH NEAR PUERTO PENASCO. NUMEROUS SMALL VORTICES ARE EMBEDDED IN THE TROUGH. GLOBAL MODELS SUGGEST LARGER SCALE FORCING FOR ASCENT WILL BE WANING TODAY AS MUCH OF THE AREA BECOMES POSITIONED BEHIND THE EASTWARD- ADVANCING TROUGH AXIS. A DRYING TREND IS THEN EXPECTED TO BEGIN TO WORK ITS WAY EASTWARD ACROSS THE REGION THIS EVENING AS THE MAIN TROF AXIS SHIFTS SLOWLY OFF TO THE EAST AND PWATS BEGIN TO DROP. THE CLOUDS AND SHOWERS WILL HOLD TEMPERATURES WELL INTO THE 70S ACROSS THE LOWER DESERTS OF SOUTH-CENTRAL ARIZONA.
With high pressure building the next couple of days, the Northern Rockies will see a steady moderation of temperatures and very pleasant days ahead to ring in the spring equinox.
AS A WEAK LOW PRESSURE SYSTEM MOVES EAST FROM THE SOUTHERN GULF COAST STATES INTO THE SOUTHEASTERN UNITED STATES. A WEAK AREA OF LOW PRESSURE IS EXPECTED TO FORM ALONG THIS FRONT AND PUSH TO THE NORTHEAST THROUGH THE DAY. AS THE LOW PUSHES NORTHEAST.
High pressure will build into the region on Friday, providing dry and seasonably warm conditions with highs well into the 50s.
AN AREA OF LOW PRESSURE TO OUR SOUTH WILL SLOWLY PULL AWAY TO THE EAST TODAY GRADUALLY BRINGING AN END TO ANY SHOWERS AROUND IN THE MOJAVE DESERT BY EARLY THIS EVENING.
UPPER RIDGE IN PLACE TODAY. VFR CONDITIONS WILL BE PREVALENT AS UPPER RIDGING CONTINUES TO AMPLIFY OVER THE REGION. A WEAK UPPER TROUGH WILL PASS THROUGH THIS EVENING. AN AMPLIFYING UPPER RIDGE OVER THE INTERMOUNTAIN NW WILL PUSH TEMPERATURES WELL ABOVE NORMAL BY FRIDAY. BY FRIDAY THESE FEATURES SHIFT INTO EASTERN IDAHO AS AN UPPER TROUGH APPROACHES THE PAC NW COAST.
816 AM EDT THU MAR 19 2015 LOW PRESSURE WILL MOVE EASTWARD FROM THE CENTRAL GULF STATES THIS MORNING TO THE CAROLINA COAST TONIGHT SPREADING RAIN ACROSS THE AREA THROUGH TONIGHT.
WITH THE LOW PROBABILITY WILL LEAVE PRECIP OUT OF THERE AT THIS TIME.
959 AM CDT THU MAR 19 2015 WATER VAPOR LOOP INDICATED AN UPPER LEVEL TROUGH OVER THE CENTRAL ND/SD BORDER AND WAS MOVING EAST ABOUT 25 KNOTS. TODAY WILL START OFF CLOUDY AND AS THE 500 MB TROUGH MOVES EAST SOME CLEARING MAY OCCUR THIS AFTN IN THE RRV AND POINTS WEST ESP MID TO LATE AFTN. COLD FRONT AND NORTH WIND WILL DROP SOUTH BEHIND THE SYSTEM FRI AFTN-EVE. HIGH PRESSURE WILL BUILD FROM MANITOBA INTO MINNESOTA FRI NIGHT CLEARING SKIES.
ZCZC LAXWRKAFD 191441 TTAA00 KLAX DDHHMM 852 AM PDT THU MAR 19 2015 UPPER LEVEL LOW PRESSURE SYSTEM OVER NORTHERN BAJA WILL BRING A FEW ADDITIONAL SHOWERS AND THUNDERSTORMS THIS AFTERNOON.
THIS MORNING'S SHRA ALONG THE FRONT IS THE HIGHLIGHT OF THIS INITIAL EVENT. THE END OF THE PRECIP IS EXPECTED BY SUN AFTERNOON/EVENING TIME FRAME AS THE LOW AND UPPER LEVEL TROF KICKS NE OF THE REGION.
AS ONSHORE WINDS MAY RESULT IN HIGHS COOLER THAN FORECAST.
THE LATEST SURFACE MAP FEATURES HIGH PRESSURE CURRENTLY PARKED ACROSS THE GREAT LAKES REGION. LOW PRESSURE IS POSITIONED ACROSS THE DEEP SOUTH. A SHORT WAVE TROUGH IS DAMPENING AS IT MOVES THROUGH THE LOWER MISSISSIPPI VALLEY WITHIN THE SOUTHERN STREAM. WHILE ANOTHER SHORT WAVE TROUGH IS MOVING INTO THE NORTHERN PLAINS WITHIN THE NORTHERN STREAM. TO THE LOWER TO MID 40S ELSEWHERE. WIDESPREAD LIGHT RAINS WILL CONTINUE TONIGHT INTO FRIDAY MORNING FOR MOST AS THE SURFACE BOUNDARY AND LOW GET REINFORCED BY THE APPROACHING NORTHERN STREAM SHORT WAVE TROUGH. WITH LOWS TONIGHT IN THE LOW TO MID 40S.
745 AM EDT THU MAR 19 2015 LOW PRESSURE WILL MOVE EASTWARD FROM THE CENTRAL GULF STATES THIS MORNING TO THE CAROLINA COAST TONIGHT SPREADING RAIN ACROSS THE AREA THROUGH TONIGHT.
637 AM CDT THU MAR 19 2015 WATER VAPOR SATELLITE IMAGERY SHOWING A MID-LEVEL TROUGH PROGRESSING ACROSS THE DAKOTAS INTO WESTERN MN. BUT DRY FLOW OUT OF THE HIGH WILL PRECLUDE PRECIPITATION CHANCES. CLOUDS EXPECTED TO HOLD TEMPERATURES IN THE UPPER 40S TO THE LOWER 50S. WARM AIR ADVECTION SCHEME KICKS IN TONIGHT AS THE HIGH PUSHES FARTHER EAST AND A COLD FRONT DROPS INTO FAR NORTHERN ND/MN. A COLD FRONT WILL CONTINUE TO SINK INTO NORTHERN WI/CENTRAL WI THIS WILL BRING A CHANCE OF RAIN ACROSS THAT AREA. WARM/DRY SOUTHWEST FLOW OFF THE PLAINS SHOULD EXPECTED TO PUSH TEMPERATURES INTO THE UPPER 50S TO THE LOWER 60S. THE COLD FRONT WILL MAKE PASSAGE THROUGH THE REST OF THE AREA FRIDAY NIGHT. LOOK FOR TEMPERATURE TO DROP INTO THE MIDDLE 20S TO THE LOWER 30S.
TODAY WILL START OFF CLOUDY AND AS THE 500 MB TROUGH MOVES EAST SOME CLEARING MAY OCCUR THIS AFTN IN THE RRV AND POINTS WEST ESP MID TO LATE AFTN. COLD FRONT AND NORTH WIND WILL DROP SOUTH BEHIND THE SYSTEM FRI AFTN-EVE. HIGH PRESSURE WILL BUILD FROM MANITOBA INTO MINNESOTA FRI NIGHT CLEARING SKIES.
OBS SHOW AN INVERTED TROUGH HAS DEVELOPED ALONG THE APPALACHIAN MOUNTAINS THAT EXTENDS DOWN INTO NE AL PROVIDING NE FLOW AT THIS TIME. CONVERGENCE ALONG THIS TROUGH AND INCREASED MOISTURE STREAMING INTO NE AL HAS LED TO PRECIP HANGING OVER NE AL AND SOUTHERN MIDDLE TN THROUGH THIS MORNING. WITH THE LOW LIFTING NE AND DRIER AIR FILTERING IN BEHIND THE LOW. AFTER 18Z MODELS ARE HINTING AT A POSSIBLE BREAK IN THE PCPN THAT COULD LAST FROM THIS AFTN THRU MOST OF THE OVERNIGHT HOURS DUE TO WEAK RIDGING.
1049 AM EDT THU MAR 19 2015 HIGH PRESSURE PROVIDES DRY WEATHER TODAY. LOW PRESSURE CROSSING THE OHIO VALLEY WILL BRING RAIN AND SNOW THURSDAY NIGHT AND FRIDAY. WITH SOUTHEAST FLOW FREEZING RAIN IS EXPECTED IN GARRETT COUNTY MD ALSO. WILL CONTINUE THE WINTER WEATHER ADVISORY AS IS TO ACCOUNT FOR THIS FREEZING RAIN. AND SNOW ACCUMULATION IN THE HIGHER TERRAIN OF GARRETT. LOW LEVEL MOISTURE SHOULD KEEP CLOUDS ACROSS THE REGION INTO FRIDAY NIGHT BEFORE WEAK RIDGING BUILDS IN OVERNIGHT.
BUILDING RIDGE AND INCREASING SUBSIDENCE WILL KEEP ACTIVITY TODAY TAMED AFTER THE MORNING SHOWERS EXIT THE REGION. THE MIDLEVEL LOW ACROSS BAJA CALIFORNIA AND TROUGH WILL DIG DEEPER. SHOWER ACTIVITY WILL DEVELOP LATE THURSDAY NIGHT INTO FRIDAY MORNING ACROSS THE NORTHWESTERN ZONES AND INCREASE FURTHER IN THE AFTERNOON AHEAD AND ALONG THE APPROACHING ASSOCIATED SURFACE COLD FRONT.
605 AM CDT THU MAR 19 2015 FOR 12Z TAFS /ISSUED 308 AM CDT THU MAR 19 2015/ THE UPPER LOW THAT WE HAVE BEEN WATCHING MOVE NORTHEAST HAS WEAKENED WITH ONLY A WEAK WAVE SHOWING UP NOW IN WATER VAPOR IMAGERY AS OF 08Z. AS THE LOW APPROACHES FROM THE SW. CLOUDS SHOULD HOLD THROUGH THE DAY BUT IF BREAKS DO OCCUR TEMPS COULD BE A FEW DEG WARMER THAN FORECAST. ANOTHER WEAK 500-700 MB TROUGH STARTS TO DIP SOUTHEAST ON FRIDAY WHICH SHOULD USHER IN A WEAK COLD FRONT BY FRIDAY NIGHT.
839 AM MDT THU MAR 19 2015 WEAK 400-250MB TROUGH MOVING SOUTHEASTWARD ACROSS SE MONTANA AT THIS TIME. 500MB HEIGHTS BUILDING BEHIND THE TROUGH WILL LEAD TO WARMER TEMPS TODAY.
HAVE REDUCED POPS FOR TONIGHT WITH 500MB RIDGING SIGNALING THAT CONDITIONS SHOULD BECOME LESS FAVORABLE FOR SHOWER DEVELOPMENT.
Otherwise, a cold front will move thru KHOB, KINK, and KMAF near the end of the forecast period, w/LIFR cigs possible behind the front. An upper level trough to our west will begin to slowly move east today. This trough along with good daytime heating will help fuel a few thunderstorms by this afternoon. The best chance will be across the higher terrain of W TX where deep layer shear is more than adequate to see some organized convection. Strong lift then overspreads the area Friday as the upper trough gets closer.
SCT -RA WILL SLOWLY DEVELOP AS A COLD FRONT PUSHES SOUTHWARD THROUGH THE DAY. FORCING A DEVELOPING COLD FRONT TO BEGIN TO PUSH INTO NRN OK. WITH THE STALLED H500 TROUGH OVER THE SWRN U. THE SRN PLAINS REMAIN POSITIONED UNDER AN ACTIVE SYNOPTIC PATTERN AS THE SWRN TROUGH FINALLY BEGINS TO MOVE EAST. THIS WILL KEEP LOW PRECIP CHANCES NEAR DAILY ACROSS SRN OK/WRN N TX THROUGH THE WEEKEND AS THE TROUGH FINALLY LIFTS ACROSS TX ON SUN. LOW PRECIP CHANCES WILL EXIST AT VARIOUS TIMES THROUGH THE WEEK AS WEAK RIDGING/NEAR ZONAL FLOW DEVELOPS WITH WEAK H500 SHORT WAVES TRAVERSING THE FLOW. WED-FRI AS A COLD FRONT MOVES S/SE ACROSS THE REGION IN ASSOCIATION WITH LARGE SCALE RIDGING ACROSS CANADA AND THE NRN U.
A FEW SHOWERS HAVE DEVELOPED THIS MORNING ALONG THIS FRONTAL BOUNDARY AND THIS COULD SERVE AS A FOCUS FOR SOME SHOWER DEVELOPMENT THROUGHOUT THE DAY AS TEMPERATURES ARE EXPECTED TO CLIMB INTO THE LOWER 80S.
SFC DW PTS ARE NOW IN THE LOWER TO MID 60S AREA-WIDE. SO A WARM AND HUMID AFT IS ON TAP WITH MAX TEMPS LIKELY IN THE LOWER 80S INLAND. ALSO SPED UP COLD FRONT TIMING A FEW HOURS TOMORROW MORNING. 40 MOISTURE POOLING UNDER THE LOW-LEVEL INVERSION HAS LED TO PATCHY FOG AND AREAS OF STRATUS AT 1130Z. TONIGHT A COLD FRONT WILL APPROACH KCLL AND KUTS BETWEEN 09Z AND 12Z.
844 AM EDT WED MAR 25 2015 A WARM FRONT WILL INITIATE THE CHANCE FOR SHOWERS TODAY. WIDESPREAD SHOWERS ARE EXPECTED WITH A THURSDAY COLD FRONT. SPS FOR ANY POSSIBLE ISOLATED FREEZING RAIN IN THE RIDGES WAS ISSUED. AN ADVANCING COLD FRONT.
1138 AM EDT WED MAR 25 2015 AS A WARM FRONT MOVES NORTH SHOWERS WILL DIMINISH ACROSS THE REGION THIS AFTERNOON. WIDESPREAD SHOWERS ARE EXPECTED WITH A THURSDAY COLD FRONT. WARM FRONT ALMOST THROUGH KPIT AT 15Z AND WILL SWEEP NORTH AND EAST THIS AFTERNOON TAKING BULK OF SHOWERS WITH IT. SHOWERS WILL BEGIN TO INCREASE BEFORE DAYBREAK ESPECIALLY IN EARN OH AS LOW PRESSURE AND A COLD FRONT APPROACH FROM THE WEST. AN ADVANCING COLD FRONT.
RAIN TODAY WILL DECREASE THIS EVENING AS A WARM FRONT MOVES NORTH TO BRITISH COLUMBIA. AN UPPER LEVEL RIDGE WILL BRING WARM AND DRY CONDITIONS THURSDAY.
1113 AM EDT WED MAR 25 2015 A MILDER FLOW OF AIR AND INCREASING MOISTURE WILL BRING A CHANCE OF FREEZING RAIN TO THE LAUREL HIGHLANDS AND PORTIONS OF THE WEST CENTRAL. A WARM FRONT WILL BRING SCATTERED RAIN SHOWERS FROM WEDNESDAY AFTERNOON INTO THURSDAY.
STRENGTHENING HIGH PRESSURE ALOFT WILL THEN BRING EVEN WARMER TEMPERATURES. CLOUD COVER OVER THE ERN TWO-THIRDS OF THE FORECAST AREA THIS MORNING ASSOCIATED WITH A WEAK UPPER LEVEL TROF MOVING THRU THE STATE. WARMER DAYTIME TEMPERATURES WILL OCCUR LATER IN THE WEEK INTO THE WEEKEND AS STRONG HIGH PRESSURE BUILDS OVER THE AREA FROM THE WEST. HIGH PRESSURE WILL DOMINATE THE WEATHER THIS WEEK AND CONTINUING INTO THIS WEEKEND.
COLD FRONT WILL APPROACH CKV TOWARD 12Z THU. A WEAK TROUGH WILL EXTEND SOUTHWARD AND MOVE ACROSS THE MID STATE THIS AFTERNOON.
A STRONG RIDGE OF HIGH PRESSURE WILL BUILD OVER THE AREA PROVIDING DRY WEATHER AND WELL ABOVE NORMAL TEMPERATURES THROUGH THE END OF THE WEEK. SHORT WAVE TROUGH EXITING THE REGION THIS MORNING WITH A DRY NORTHWEST FLOW OVERHEAD. AN AMPLIFYING UPPER RIDGE OFF THE COAST WILL BEGIN TO BUILD IN TODAY AND STRENGTHEN INTO THURSDAY. SURGE CONSIDERABLY WARMER ON THURSDAY.
/ISSUED 413 AM CDT WED MAR 25 2015/ MARINE LAYER WAS STEADILY ADVANCING NORTHWARD WITH SOME RADIATIONAL AND ADVECTIVE FOG IMPACTING COOLER NEAR-WATER AREAS. SOME FOG MAY REDEVELOP OVERNIGHT BUT BECOMING DISRUPTED AT TIMES BY ISOLATED SHOWERS THAT MAY DEVELOP ON CONVERGENT ZONES WITHIN THE LOW LEVEL FLOW.
COLD FRONT TO ENTER NORTHERN CWA AROUND 26/06Z. NORTHERLY WINDS WILL BECOME GUSTY BEHIND COLD FRONT. THE UPPER LEVEL FLOW IS SLIGHTLY SOUTHWEST IN WAKE OF THE DEPARTING DISTURBANCE AND TO THE WEST AN AMPLIFYING UPPER LEVEL TROUGH OF LOW PRESSURE CONTINUED TO TAKE SHAPE ACROSS THE ROCKIES. THE COLD FRONT ASSOCIATED WITH THE SYSTEM WILL MOVE EAST INTO THE FORECAST AREA AROUND MIDNIGHT INCREASING SHOWERS AND THUNDERSTORMS THAT WILL DEVELOP ALONG AND AHEAD OF THE BOUNDARY AS IT QUICKLY OVERTAKES THE DRY LINE OVER TEXAS. IN THE WAKE OF THE LONGWAVE TROUGH OF LOW PRESSURE. EXPECT HIGH PRESSURE ON THE SURFACE AND ALOFT TO BUILD INTO THE REGION.
40 MOISTURE POOLING UNDER THE LOW-LEVEL INVERSION HAS LED TO PATCHY FOG AND AREAS OF STRATUS AT 1130Z. TONIGHT A COLD FRONT WILL APPROACH KCLL AND KUTS BETWEEN 09Z AND 12Z. UPPER LEVEL RIDGE SHOULD BUILD OVER THE PAC COAST AS THE TROUGH DEEPENS OVER THE GREAT LAKES AND MISS RIVER VALLEY. THIS MEANS THAT TEMPS MAY BE A TOUCH COOLER THAN PREVIOUS FORECASTS GIVEN THE STRONG COLD ADVECTION. YESTERDAY THE GFS/ECMWF SOLUTIONS HAD BEEN SHOWING A RATHER POTENT UPPER LEVEL TROUGH MOVING ACROSS THE AREA NEXT TUE/WED.
THE UPPER LEVEL FLOW IS SLIGHTLY SOUTHWEST IN WAKE OF THE DEPARTING DISTURBANCE AND TO THE WEST AN AMPLIFYING UPPER LEVEL TROUGH OF LOW PRESSURE CONTINUED TO TAKE SHAPE ACROSS THE ROCKIES. THE COLD FRONT ASSOCIATED WITH THE SYSTEM WILL MOVE EAST INTO THE FORECAST AREA AROUND MIDNIGHT INCREASING SHOWERS AND THUNDERSTORMS THAT WILL DEVELOP ALONG AND AHEAD OF THE BOUNDARY AS IT QUICKLY OVERTAKES THE DRY LINE OVER TEXAS. IN THE WAKE OF THE LONGWAVE TROUGH OF LOW PRESSURE. EXPECT HIGH PRESSURE ON THE SURFACE AND ALOFT TO BUILD INTO THE REGION.
HIGH PRESSURE (1030 MB) IS CENTERED ALONG THE MID ATLANTIC COAST. WITH A RIDGE WEDGING SOUTHWESTWARD INTO THE SOUTHEAST UNITED STATES AND GULF OF MEXICO. CONSIDERABLE INSOLATION WITH LIGHT MOSTLY EAST WINDS WILL ALLOW HIGH TEMPERATURES TO CLIMB INTO THE LOWER TO MID 80S. WITH HIGH PRESSURE ALONG THE MID ATLANTIC COAST SLIDING OFFSHORE AND DROPPING SOUTHEASTWARD. THE LOW TEMPERATURE IN KEY WEST FELL TO 54 DEGREES.
AND HIGH PRESSURE BUILDS EAST OF THE REGION CLOUDS WILL LIFT.
1119 AM CDT WED MAR 25 2015 WARM FRONT IS LIFTING NORTH ACROSS THE AREA AT THIS TIME.
HIGH PRESSURE WILL BUILD INTO THE GREAT BASIN THROUGH THE REMAINDER OF THE WEEK. MID LEVEL RIDGING IS FORECAST TO BUILD ACROSS THE REGION THROUGH THE REMAINDER OF THE WEEK INTO THE UPCOMING WEEKEND RESULTING IN A WARMING TREND AREAWIDE.
THE WEST COAST UPPER RIDGE EXPANDS EAST INTO THE INTERMOUNTAIN WEST BY THE END OF THE SHORT TERM. THE UPPER TROUGH DEEPENS AS IT TRANSLATES EAST FROM THE GREAT PLAINS TO THE MS VALLEY. IN CLOSER PROXIMITY TO THE UPPER TROUGH AND LARGE SCALE LIFT. IT WILL BE MUCH COOLER THAN RECENT DAYS WITH HIGHS IN THE 30S AND 40S. SNOWFALL ACCUMULATIONS WILL BE CONCENTRATED OVER THE HIGHER TERRAIN TODAY. BUT INCREASE IN SOUTHEAST WY AS A LEE SIDE TROUGH DEEPENS.
WITH VERY LITTLE CHANGES NEEDED ELSEWHERE AS THE LOW STRATUS MIXES OUT AND WARM ADVECTION RESULTS IN TEMPS CLIMBING TO NEAR 80 DEGREES.
DEVELOPMENT ALONG THE APPROACHING COLD FRONT. A COLD FRONT WILL BEGIN TO PUSH INTO THE MIDSOUTH. COLD FRONT WILL CONTINUE TO PUSH SOUTHEAST ACROSS THE MIDSOUTH. CLOUDS AND RAIN WILL KEEP TEMPERATURES HOLDING NEARLY STEADY NEAR THE LOW TEMPERATURES ACROSS MUCH OF THE MIDSOUTH. EXPECT HIGHS IN THE LOWER TO MID 60S. AN UPPER TROF WILL BEGIN TO PUSH INTO NORTHEAST ARKANSAS AFTER MIDNIGHT AND MAY BRING ADDITIONAL CHANCES FOR SHOWERS.
SHOWERS THIS MORNING WELL TO OUR NORTH AND EAST IN THE VICINITY OF A WARM FRONT. CURRENT FORECAST GRIDS LIMIT SHOWERS TO ERN FOOTHILLS/MTNS AND THE HIGHER TERRAIN OF SWRN VA.
926 AM MDT WED MAR 25 2015 AN UPPER LEVEL SYSTEM COMBINED WITH UPSLOPE BEHIND A COLD FRONT ARE PRODUCING SNOW SHOWERS ACROSS THE METRO AREA. EXPECT TEMPERATURES TO REMAIN AT OR ABOVE FREEZING THROUGH THE DAY. AT LOWER ELEVATIONS A CDFNT WILL MOVE ACROSS NERN CO WITH THE LOW LVL FLOW MAINLY NLY BEHIND THE FNT. ONE POTENTIAL ISSUE IS LYR OF DRY AIR IN THE LOWER LEVELS AND HOW LONG IT WILL TAKE TO ERODE AS THERE COULD BE QUITE A BIT OF VIRGA INITIALLY BEFORE SATURATION OCCURS. AS FOR HIGHS WILL KEEP READINGS MAINLY IN THE 40S OVER NERN CO HOWEVER THE FAR NERN CORNER COULD RISE INTO THE LOWER 50S WHERE PCPN POTENTIAL AND CLOUD COVER WILL BE LESS.
AN APPROACHING COLD FRONT WILL INITIATE WIDESPREAD THUNDERSTORMS BEGINNING THIS AFTERNOON. WITH A DEEP TROUGH AXIS EXPECTED TO DEVELOP OVER THE MISSISSIPPI VALLEY. WHILE LOW PRESSURE ORGANIZES DOWN TO OUR SOUTHWEST.
639 AM CDT WED MAR 25 2015 COLD FRONT RAPIDLY TRACKING THROUGH THE EASTERN FORECAST AREA THIS MORNING. WILL BE OPTIMISTIC WITH CEILINGS BECOMING PARTLY CLOUDY THEN CLEARING IN THE AFTERNOON AS HIGH PRESSURE STARTS BUILDING INTO THE HIGH PLAINS. WENT A LITTLE COOLER IN THE EAST WITH CLOUDS LINGERING A BIT LONGER HERE. PARTICULARLY IN THE HIGHWAY 14 AREA AND NEAR THE BUFFALO RIDGE IN SW MN. LOWS TONIGHT WILL GENERALLY BE IN THE LOW TO MID 20S.
RIDGE AXIS FORMERLY ALONG THE EASTERN SEABOARD IS PUSHING SEAWARD INTO THE WESTERN ATLC WITH THE APPROACH OF ANOTHER LOW PRESSURE SYSTEM. COASTAL TROUGHING STILL EVIDENT WELL OFFSHORE AS WINDS OVER MUCH OF OUR COASTAL WATERS REMAINS STUBBORNLY WITHIN A RANGE OF NNW- NNE.
ADDITIONAL STRATUS WILL BE POSSIBLE AHEAD OF AN APPROACHING COLD FRONT LATER TONIGHT INTO EARLY THURSDAY. /ISSUED 513 AM CDT WED MAR 25 2015/ A SIGNIFICANT CHANGE IN THE CURRENT PATTERN WILL TAKE PLACE AS A STRONG NORTHERN STREAM TROUGH DIGS SOUTHWARD OVER THE EASTERN CONUS AND BRINGS A SURGE OF POLAR AIR INTO THE ARKLAMISS BY TOMORROW AFTERNOON INTO TOMORROW NIGHT. AS THE COLD FRONT MOVES INTO THE LOWER MS VALLEY REGION THURSDAY.
A COLD FRONT WILL THEN RESULT IN A STRONG NORTHERLY WIND SHIFT THIS EVENING WITH SOME GUSTS NEARING 50 KT NEAR CSM. THIS TREND WILL CONTINUE THROUGH THE EARLY AFTERNOON HOURS AHEAD OF THE COLD FRONT. THE HIGHEST IMPACT FOR OUR AREA WILL LIKELY BE AROUND 22-03Z. NEAR FREEZING LOWS ARE EXPECTED ACROSS EXTREME NW OK THURSDAY MORNING SO WILL NEED TO WATCH THIS CAREFULLY FOR POTENTIAL FREEZE WARNING.
100 PM EDT WED MAR 25 2015 A COLD FRONT WILL MOVE ACROSS THE AREA TODAY AND THEN LOW PRESSURE WILL DEVELOP ON THE FRONT TONIGHT AND SPREAD MORE RAIN BACK INTO THE AREA ESPECIALLY ON THURSDAY.
LOW CLOUDS HAVE FILLED IN MANY OF THE VALLEYS OVER SOUTHWEST OREGON AND NORTHERN CALIFORNIA THIS MORNING, BUT AS A DIRTY RIDGE BUILDS IN, HIGH CLOUDS ARE VERY GRADUALLY LIFTING NORTH. THIS WILL ALLOW MARCH SUN TO WORK ON THE LOW CLOUDS, AND THEY SHOULD BE GONE FROM MOST AREAS BY LATE MORNING WITH ONLY RESIDUAL HIGH CLOUDINESS LEFT.
LOW CLOUDS AND FOG SHOULD RETURN AGAIN TONIGHT WITH IFR/LIFR CONDITIONS PRIOR TO A COLD FRONT THAT MOVE THROUGH THURSDAY MORNING. FAVORED THE WARMER MAV TEMPS FOR TODAY. ASSOCIATED COLD FRONT WILL MOVE THROUGH THE REGION THURSDAY MORNING.
A LIGHT SOUTHERLY FLOW TODAY WITH MIXING OUT TO VFR BY MID-MORNING AS THE AREA IS UNDER THE INFLUENCE OF HIGH PRESSURE TO THE EAST. A SLOW MOVING COLD FRONT WILL APPROACH LATE TNITE WITH LIFR INTO BPT AND AEX. A ZONAL UPPER LEVEL FLOW THIS MORNING WILL BECOME SOUTHWEST TODAY AND THURSDAY AS AN UPPER LEVEL TROUGH OVER THE FOUR CORNERS REGION OF COLORADO AND NEW MEXICO BEGINS TO AMPLIFY. A COLD FRONT WILL SWEEP ACROSS OKLAHOMA AND TEXAS WEDNESDAY AND WEDNESDAY NIGHT INTO OUR REGION ON THURSDAY.
Strong ridge with greatest height anomalies from 700 to 200 mbs will build over Norcal today and Thu. Warmest day in the area on Thu with the ridge axis forecast to be over the area. and then primarily in the Srn Sac and Nrn San Joaquin Vly as the ridge axis shifts inland and onshore flow develops. Will lean towards the higher members of the NCEP SREF plume for maxes at some of the sites for the next couple of days.
948 AM EDT WED MAR 25 2015 HIGH PRESSURE WILL BUILD IN BRIEFLY TODAY BRINGING BREEZY BUT WARM CONDITIONS. A COLD FRONT CONTAINING COPIOUS MOISTURE WILL PRODUCE SHOWERS AND THUNDERSTORMS LATE TONIGHT THROUGH THURSDAY.
632 AM CDT WED MAR 25 2015 THE COLD FRONT IS SITUATED JUST ON THE EASTERN EDGE OF THE CWA THIS MORNING. SO DID TREND TOWARD A SLIGHTLY COOLER MODEL GUIDANCE FOR TEMPERATURES. HIGH PRESSURE SLIDES EAST OVERNIGHT.
FORECAST WAS UPDATED TO INCREASE POPS THIS MORNING TO 90-100 PERCENT WITH THE WARM FRONTAL PRECIPITATION PRESENTLY FROM PROSSER AND BOARDMAN EAST TO THE BLUE MOUNTAINS. THE WARM FRONT WILL EXIT THE AREA TONIGHT AND HIGH PRESSURE WILL STRENGTHEN OVER THE AREA ON THURSDAY. TEMPERATURES WILL WARM A LITTLE TODAY BUT EXPECT EVEN WARMER TEMPERATURES ON THURSDAY WITH POSSIBLE NEAR RECORD HIGH TEMPERATURES.
WITH THE EXTENSIVE CLOUDINESS EXPECTED HIGH TEMPERATURES WILL LIKELY BE COOLER THEN PREVIOUSLY EXPECTED.
AND TIMING OF COLD FRONT EARLY THURSDAY MORNING. MVFR AND IFR CEILINGS RE-DEVELOPING LATE EVENING AHEAD OF A COLD FRONT. THIS COLD FRONT WILL MOVE THROUGH THE REGION EARLY THU MORNING. AN AMPLIFIED UPPER LEVEL TROUGH THAT EXTENDS FROM THE UPPER MIDWEST INTO THE SOUTHERN PLAINS IS FORECAST TO PUSH ACROSS OUR AREA. THIS WILL PUSH A COLD FRONT ACROSS SOUTH CENTRAL TEXAS OVERNIGHT. COOL TEMPERATURES ARE EXPECTED BEHIND THE COLD FRONT WITH HIGHS IN THE MID 60S ON THURSDAY.
944 AM CDT WED MAR 25 2015 HIGH PRESSURE OVER EASTERN MONTANA WILL MOVE SOUTHEAST INTO THE WESTERN DAKOTAS TODAY AS LOW PRESSURE CONTINUES TO TRACK EAST ACROSS THE NORTHERN GREAT LAKES. FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE STRONG WINDS THIS MORNING ACROSS MY EAST AND COOLER TEMPERATURES.
628 AM CDT WED MAR 25 2015 COLD FRONT JUST STARTING TO ENTER NORTHEAST PART OF THE CWA AT 07Z.
HIGH PRESSURE AT THE SURFACE WAS MOVING EAST OVER MUCH OF THE EASTERN CONUS AND WINDS HAVE REMAINED SOUTHERLY AND ELEVATED ABOVE 5KTS. A STRONG UPPER RIDGE OFF OF THE WESTERN COAST WILL CONTINUE TO BUILD EASTWARD AND STRENGTHEN. THIS WILL IN TURN STRENGTHEN THE TROUGH OVER THE CENTRAL CONUS. LOW PRESSURE OVER THE TEXAS PANHANDLE WILL DEEPEN AS IT MOVES EAST THIS MORNING. IN RESPONSE TO THE AMPLIFYING UPPER TROUGH.
1243 PM EDT WED MAR 25 2015 A COLD FRONT WILL MOVE ACROSS THE AREA TODAY AND THEN LOW PRESSURE WILL DEVELOP ON THE FRONT TONIGHT AND SPREAD MORE RAIN BACK INTO THE AREA ESPECIALLY ON THURSDAY.
FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE STRONG WINDS THIS MORNING ACROSS MY EAST AND COOLER TEMPERATURES.
A WEAK AREA OF HIGH PRESSURE WILL REMAIN OVER THE EASTERN GULF WITH LIGHT WINDS GIVING WAY TO A SEA BREEZE CIRCULATION NEAR THE COAST THIS AFTERNOON. A COLD FRONT WILL MOVE TOWARD THE AREA THURSDAY WITH A MORE SOUTHERLY FLOW SETTING UP.
Light southwesterly winds tonight will turn to the northeast tomorrow as a cold front moves through. This will be the warmest day of the week, with a cold front arriving tomorrow. Cooler readings behind the front, with afternoon highs on Thursday ranging from near 60 along I-20 to near 70 along I-10.
/ISSUED 231 PM CST Wed Jan 28 2015/ Models continue to show the next upper level low moving into northwestern Mexico by the weekend bringing widespread precipitation to our area.
SOME 20 TO 25 DEGREES COOLER THURSDAY THAN TODAY. COLD FRONT TO PASS THROUGH THE REGION OVERNIGHT TURNING WINDS NORTHWESTERLY. INCLUDE THE HIGH FIRE DANGER THREAT THROUGH THE EARLY EVENING.
MVFR CEILINGS WILL INCREASE BETWEEN KGLH/KGWO AND KGTR AS A COLD FRONT MOVES THROUGH AND SHIFTS THE WIND FROM THE SW TO THE NW AT 10 TO 15 KNOTS.
CURRENT FORECAST EXPECTS DENSEST FOG IN THE LOWER TREASURE VALLEY AND VALLEYS OF ERN OREGON BUT ONLY PATCHY COVERAGE. THE BAD NEWS IS THAT THE LONG WAVE UPPER RIDGE AND INVERSION CONDITIONS COULD LAST ANOTHER TEN DAYS OVER WRN NORTH AMERICA. SHORT WAVE TROUGHS WILL WEAKEN AS THEY PASS THROUGH THE LONG WAVE RIDGE RESLUTING IN ONLY LIGHT PCPN.
540 PM CST WED JAN 28 2015 ACTIVE FORECAST TONIGHT WITH COLD FRONT FRONT MOVING THROUGH THE AREA WITH STRATUS AND WINDS TO FOLLOW. MODEL SOUNDINGS SHOW A FAIR AMOUNT OF SATURATION IN THE LOW LEVELS OF THE ATMOSPHERE. ONLY CHANCE FOR PRECIPITATION WILL BE DRIZZLE OR FREEZING DRIZZLE. WITH LOW TEMPERATURES GENERALLY A FEW DEGREES BELOW FREEZING AND SURFACE TEMPERATURES AT OR JUST BELOW FREEZING. HAVE REALLY INCREASED CLOUD COVER ACROSS THE AREA AS MODEL SOUNDINGS SHOW STEEP LAPSE RATES IN THE LOW LEVELS.
NORTH/SOUTH ORIENTED HIGH PRESSURE RIDGE NEAR THE EASTERN SEABOARD WILL NUDGE ONLY SLIGHTLY EAST. A COASTAL TROUGH WILL EVOLVE AS WINDS OVER THE ATLANTIC TURN NORTHEAST. THE HIGH PRESSURE RIDGE WILL GET SHUNTED SOUTH INTO CENTRAL FLORIDA BY LATE IN THE DAY AS A FRONTAL TROUGH MOVES TOWARDS THE SOUTHEAST STATES. ALL THE GUIDANCE IS SHOWING THAT SLOW MOVING HIGH PRESSURE RIDGE ALONG THE EASTERN SEABOARD WILL GET SHUNTED SOUTH INTO CENTRAL FLORIDA BY LATE THU.
TOMORROW MORNING/S COLD FRONT WAS LOCATED FROM THE OKLAHOMA PANHANDLE TO SOUTHEAST IOWA LATE THIS AFTERNOON. WINDS WILL REMAIN SOUTHERLY AT 9-13KTS TONIGHT BUT VEERING SOUTHWESTERLY AFTER 07Z AS A PRE-FRONTAL TROUGH ARRIVES. BRECKENRIDGE. A COLD FRONT ARRIVES TONIGHT BRINGING MUCH COOLER TEMPERATURES. COOLER TEMPERATURES WILL BE FELT BEHIND THE FRONT BUT TEMPERATURES WILL NOT CONTINUOUSLY FALL THROUGH THE DAY.
826 PM EST WED JAN 28 2015 HIGH PRESSURE EXTENDING FROM THE GREAT LAKES TO THE GULF COAST WILL BUILD EAST ACROSS THE AREA OVERNIGHT AND MOVE OFFSHORE THURSDAY. A COLD FRONT WILL MOVE ACROSS THE REGION THURSDAY NIGHT.