Aikyam-Lab/Synoptic-Bench huggingface dataset:
STORM CONTINUES TO WIND DOWN ACROSS SOUTH CENTRAL AND SOUTHEAST LARGE NEARLY VERTICAL STACKED CYCLONE ACROSS EXTREME SOUTHWEST NEBRASKA AND NORTHWEST KANSAS WILL CONTINUE TO TRANSLATE NORTH AND EAST INTO THE UPPER MIDWEST OVERNIGHT. AND HAVE EXTENDED WINTER WEATHER ADVISORY FOR THE HIGHER ELEVATIONS OF THE SAWATCH AND MOSQUITO RANGES THROUGH 6 PM. AS GUSTY NORTHWEST WINDS KEEPING TRAVEL HAZARDOUS OVER THE HIGH MOUNTAIN PASSES. WITH LOWS IN THE SINGLE DIGITS ABOVE AND BELOW ZERO ACROSS THE HIGHER TERRAIN AND HIGH VALLEYS. AND WEAK UPSLOPE FLOW AND MID LEVEL INVERSIONS EXPECTED ACROSS THE LOWER ELEVATIONS. MEANWHILE TEMPERATURES WILL STRUGGLE TO COME CLOSE TO THE FREEZING MARK ACROSS THE PLAINS THURSDAY AFTERNOON AS NORTHERLY FLOW CONTINUES TO REINFORCE COLD AIR ACROSS THE PLAINS.
AS A LOW PRESSURE SYSTEM SLIDES THROUGH CO/KS. NORTHWESTERN AREAS COULD SEE LOWS DROP INTO THE LOW TO MID TEENS. COOLER AIR WILL STAY IN PLACE TOMORROW AND HIGH TEMPS WILL LIKELY BE A FEW DEGREES COOLER THAN TODAY. THIS SYSTEM WILL BRING A COLD FRONT ACROSS THE REGION THURSDAY AND MODELS HAVE TRENDED TOWARD SHOWING ENOUGH LOW-MID LEVEL MOISTURE TO SUPPORT SCT WEAK SNOW SHOWERS ACROSS NE HALF OF THE PANHANDLE. THE LARGER SCALE UPPER TROUGH WILL SHIFT EAST AS THIS S/WV ROUNDS THE BASE THROUGH FRI AND UPR RIDGING WILL SET UP OVER THE PLAINS IN ITS WAKE. HIGH PRESSURE ACROSS THE SE US AND LOW PRESSURE TO THE NORTH WILL PROMOTE SWRLY LOW LEVEL FLOW.
1231 AM EST WED DEC 16 2015 A RIDGE OF HIGH PRESSURE WILL MOVE EASTWARD ACROSS OHIO REACHING CENTRAL PA BY SUNRISE. AN AREA OF LOW PRESSURE WILL MOVE NORTHEAST ACROSS THE WESTERN GREAT LAKES WEDNESDAY INTO WEDNESDAY NIGHT FORCING A COLD FRONT ACROSS THE AREA THURSDAY MORNING. HIGH PRESSURE WILL SLOWLY BUILD OVER THE REGION FROM THE SOUTH OVER THE WEEKEND. IT DOESN'T APPEAR THAT IT WILL BE OVERLY MOIST IN THE LOW LEVELS.
CONTINUE TO DEVELOP ACROSS E TX/SE OK/EXTREME SW AR AHEAD OF A COLD FRONT. CONVECTIVE COVERAGE SHOULD INCREASE THROUGH SOME THROUGH THE OVERNIGHT HRS AS A POSITIVELY-TILTED UPPER TROUGH AXIS MOVES ACROSS THE SRN PLAINS. THIS RAPID MOISTURE RETURN IS IN RESPONSE TO A STRONG UPPER LEVEL TROUGH MOVING OUT OF THE INTERMOUNTAIN WEST AND INTO THE CENTRAL PLAINS HELPING TO DRAW THE LOW LEVEL MOISTURE NORTHWARD. COLD FRONT SHOULD ACCOMPANY THE UPPER TROUGH AXIS EARLY ON WEDNESDAY BRINGING AND END TO THE PRECIP AND LOWER CEILINGS. AS THIS LOW MOVES NWD ACROSS MN ON WEDNESDAY. COOLER TEMPS AND DRY AIR WILL MOVE IN WEDNESDAY NIGHT THRU THE WEEKEND. AS THIS HIGH PRESSURE MOVES EAST OF THE REGION LATE IN THE WEEKEND.
FOG WILL PERSIST UNTIL ABOUT 15 TO 16Z WITH THE LOW SUN ANGLE.
1230 AM EST WED DEC 16 2015 FAIR AND RELATIVELY MILD WEATHER WILL CONTINUE ON WEDNESDAY BEFORE A COLD FRONT BRINGS PERIODS OF RAIN AND DRIZZLE TO THE REGION ON THURSDAY. TEMPERATURES ARE ON PACE FOR MINS IN THE LOWER TO MIDDLE 30S, WITH WINDS LIGHTENING. TEMPERATURES WILL BECOME COOLER THAN THE LAST SEVERAL DAYS WITH OVERNIGHT VALUES DIPPING INTO THE 30S. THE TARGET OF OPPORTUNITY DURING THIS PERIOD IS THE SIGNIFICANT LOW PRESSURE SYSTEM MOVING WEST OF US ACROSS THE GREAT LAKES ON THURSDAY. THE OCCLUDED/COLD FRONT HAS GOOD AGREEMENT IN THE MODELS SWEEPING THROUGH CNY/NEPA ON THURSDAY.
However, A vigorous upper level low pressure system lifting northeast from the Plain into the Midwest overnight will push a cold front into the region on Wednesday. Though the mid level trof looks formidable, little chc for deep moisture return and weak convergence in the lower levels will likely limit and any precip to areas of light rain. A short lived transition to more seasonal conditions will begin on Thursday as chilly high pressure begins to build in from the west.
A front currently stalled over the Southeast FL Big Bend will lift north as a warm front in response to an approaching cold front and wave of low pressure. It will be another unseasonably warm day with highs ranging from the lower 70s northwest to the lower 80s over the Suwannee Valley.
1240 AM EST WED DEC 16 2015 HIGH PRESSURE WILL BUILD IN FROM THE NORTHWEST TONIGHT AND WEDNESDAY IN THE WAKE OF DEPARTING LOW PRESSURE. THE NEXT LOW PRESSURE SYSTEM WILL APPROACH WEDNESDAY NIGHT AND WILL MOVE ON THROUGH THURSDAY AND THURSDAY NIGHT.
WITH TEMPERATURES REBOUNDING INTO THE 40S AS UPPER RIDGE SHIFTS INTO THE PLAINS. INTENSE SFC CYCLONE THAT AT MID-NGT WAS SPINNING OVER EXTREME ERN NEBRASKA WL CONT TO PUMP STIFF W-NW WINDS ~22KTS/25MPH SUSTAINED W/ GUSTS ~30KTS/35MPH ACRS CNTRL KS FOR MOST OF THE NGT. THERE'LL BE A LULL ~12Z AS THE CYCLONE CONTS ITS NE JOURNEY ACRS THE UPR MS VALLEY ~16/18Z BUT W/ STEEP LAPSE RATES THE WINDS WL ONCE AGN INCR TO ~22KTS SUSTAINED W/ ~30KT GUSTS ACRS ALL OF CNTRL KS W/ SLGTLY LESSER SPEEDS ACRS SC & SE KS.
952 PM MST TUE DEC 15 2015 COMPACT BUT STRONG UPPER TROUGH CONTINUES TO LIFT NE ACROSS THE NORTHERN PLAINS. THIS EVENING THROUGH WEDNESDAY NIGHT UPPER LEVEL ANALYSIS HAS DEEP TROF ACROSS THE ROCKIES AND NORTHERN PLAINS. WITH CLOSED LOW LIFTING NORTH THROUGH WESTERN NEBRASKA. STRONG LOW PRESSURE IS LOCATED OVER NORTHWEST KANSAS. WITH THE HIGHEST AMOUNTS ACROSS SOUTH CENTRAL SOUTH DAKOTA.
415 AM EST WED DEC 16 2015 CURRENTLY - AN ATLANTIC RIDGE EXTENDS ACROSS THE BAHAMAS INTO FLORIDA. RIDGING ALOFT EXTENDS NORTHEASTWARD ACROSS FLORIDA FROM THE YUCATAN PENINSULA. RIDGING WILL REMAIN NORTH OF OUR AREA OVER THE NEXT SEVERAL DAYS. RIDGING ALOFT WILL REMAIN APPROXIMATELY STATIONARY AS A TROUGH DIGS INTO THE ROCKIES. A COLD FRONT IS EXPECTED TO ADVANCE THROUGH THE GULF OF MEXICO LATER IN THE WEEK.
NW FLOW ALOFT THROUGH WEDNESDAY AND A WEAK SHORT WAVE TROUGH IN THE NW FLOW WILL KEEP SNOW SHOWERS GOING ACROSS THE NORTHERN MOUNTAINS.
1011 PM MST TUE DEC 15 2015 COMPACT BUT STRONG UPPER TROUGH CONTINUES TO LIFT NE ACROSS THE NORTHERN PLAINS. THIS EVENING THROUGH WEDNESDAY NIGHT UPPER LEVEL ANALYSIS HAS DEEP TROF ACROSS THE ROCKIES AND NORTHERN PLAINS. WITH CLOSED LOW LIFTING NORTH THROUGH WESTERN NEBRASKA. STRONG LOW PRESSURE IS LOCATED OVER NORTHWEST KANSAS. WITH THE HIGHEST AMOUNTS ACROSS SOUTH CENTRAL SOUTH DAKOTA.
Strong cyclone over NE Nebraska this morning will continue to move away from Kansas today, with dry chilly W/NW flow in its wake.
1213 AM EST WED DEC 16 2015 AVIATION LOW PRESSURE WILL TRACK ACROSS MINNESOTA ON WEDNESDAY BRINGING SOME RAIN SHOWERS.
Winds will veer to the WNW by mid to late morning behind the cold front.
908 PM MST TUE DEC 15 2015 THE UPPER LOW THAT BROUGHT THE HEAVY SNOW TO ALL BUT THE EASTERN PORTIONS OF OUR FORECAST AREA HAS MOVED WELL EAST INTO THE CENTRAL PLAINS THIS EVENING. THIS LOW CONTINUES TO WRAP CLOUDS INTO THE SOUTHEAST CORNER OF THE STATE ALONG WITH SOME LIGHT SNOW ALONG THE DAKOTA BORDERS. GIVEN THE PARTIAL CLEARING OF SKIES COMBINED WITH THE HIGH MOISTURE CONTENT OF THE RECENT SNOW. WITH MINIMUM TEMPS IN THE LOW TEENS AND SINGLE DIGITS IN SOME AREAS. THE LONG WAVE TROUGH OVER MUCH OF THE WESTERN US WILL DEEPEN AS THE NEXT SYSTEM MOVES IN OVERNIGHT TONIGHT. THE REAL STORY WILL BE THE LOW TEMPS ON WEDNESDAY NIGHT. RIDGING WILL TAKE OVER BY THURSDAY. KEEPING DAYTIME HIGH TEMPERATURES IN THE LOW 20S FOR MOST LOCALES.
1256 AM EST WED DEC 16 2015 HIGH PRESSURE WEDNESDAY. COLD FRONT THURSDAY.
/ISSUED 914 PM CST TUE DEC 15 2015/ SKIES ARE MOSTLY CLEAR ACROSS MUCH OF THE FORECAST AREA THIS EVENING WITH TEMPERATURES FROM THE LOWER 40S TO UPPER 50S. A COLD FRONT EXTENDS FROM EASTERN KANSAS THROUGH EASTERN OKLAHOMA AND INTO SOUTH TEXAS. AS THE COLD FRONT MOVES EAST OVERNIGHT SOME OF THE RAIN MAY REACH EASTERN ARKANSAS BEFORE SUNRISE. LOW PRESSURE DEVELOPING ACROSS THE PLAINS WILL TRACK NORTHEAST INTO THE UPPER MISSISSIPPI VALLEY BY EARLY WEDNESDAY AND THEN INTO CANADA BY WEDNESDAY EVENING. THE ASSOCIATED COLD FRONT WILL PUSH ACROSS THE MIDSOUTH ON WEDNESDAY ACQUIRING MOISTURE AS IT HEADS EAST. RAIN WILL EXIT WEDNESDAY NIGHT WITH CLEARING SKIES AND MUCH COOLER TEMPS.
COLD AIR ADVECTION MOVES IN BEHIND THE TROUGH BRINGING BELOW NORMAL TEMPERATURES FOR THURSDAY. HIGHS WILL BE IN THE LOWER TO MID 20S WITH LOWS GETTING INTO THE SINGLE DIGITS ON THE PLAINS AND TEENS IN THE HIGH COUNTRY.
339 AM EST WED DEC 16 2015 HIGH PRESSURE WILL BRING CLEARING WITH WARMING TEMPERATURES LATER TODAY. A COLD FRONT WILL BRING RAIN TONIGHT AND THURSDAY. THIS WILL BRING FAIRLY WIDESPREAD RAIN OVERNIGHT BUT WITH MODEST QPF WITH BEST LIFT AND DEEP MOISTURE TOWARD THE RIDGES AS LOW PRESSURE DEVELOPS ACROSS THE MID ATLANTIC COAST. LOW PRESSURE WILL MOVE TO THE JERSEY SHORE THURSDAY WITH RAIN DIMINISHING WEST TO EAST AS THE DAY PROGRESSES. SHOWERS WILL LINGER ACROSS THE RIDGES THURSDAY EVENING BEFORE ENDING. COLDER AND DRIER AIR WILL WORK IN THURSDAY NIGHT AS A TROUGH BEGINS TO DEEPEN INTO THE GREAT LAKES.
/ISSUED 328 PM CST TUE DEC 15 2015/ DRY AND SLIGHTLY COOLER AIR WILL SETTLE ACROSS THE AREA TONIGHT AND WEDNESDAY. UPPER LOW WILL CONTINUE NORTHEAST ACROSS THE MISSOURI VALLEY INTO THE UPPER MISSISSIPPI VALLEY LATE WEDNESDAY. A WEAK EXTENSION OF THE UPPER TROUGH WILL STAY OVERHEAD THROUGH WEDNESDAY. WE ALLOWED FOR A SLIGHT MODIFICATION FOR SLIGHTLY WARMER THAN THE PREVIOUS FORECAST FOR THIS AREA. RMCQUEEN A WEAK UPPER LEVEL TROUGH TRAILING BEHIND THE UA SYSTEM MOVING TOWARD THE GREAT LAKES OVERNIGHT WILL REINFORCE THE COOLER AIR MASS MAKING ITS WAY SOUTH TOWARD THE SOUTH PLAINS WITH HIGHS REMAINING IN THE 40S ON THE CAPROCK AND STRUGGLING TO REACH 50 IN THE ROLLING PLAINS ON THURSDAY.
400 AM EST WED DEC 16 2015 HIGH PRESSURE WILL GRADUALLY RETREAT TO THE NORTHEAST TODAY. A COLD FRONT WILL CROSS THE AREA ON THURSDAY.
328 AM CST WED DEC 16 2015 THE LATEST WINTER WEATHER HEADLINES REMAIN IN TACT THIS MORNING AS A POTENT UPPER LEVEL LOW NOW MOVING INTO SOUTHWESTERN MINNESOTA. HEAVY BANDED SNOW COMING TOGETHER AS FRONTOGENETICAL FORCING AND MAXIMUM ASCENT THROUGH THE DENDRITIC GROWTH ZONE (-12C TO -18C) WITH A PERSISTENT TROWAL SUSTAINING A WARM/MOIST FEED ALOFT PER 700MB-500MB EQUIVALENT POTENTIAL TEMPERATURE RIDGE AXIS. HIGHS TODAY WILL BE IN THE LOW TO MID 20S WITH OVERNIGHT LOWS RANGING BETWEEN 6 AND 15 ABOVE.
NEAR TERM AND SHORT TERM SECTIONS HAVE BEEN UPDATED BELOW RAIN SHOWERS WILL BE POSSIBLE TODAY AND TONIGHT AS A LOW PRESSURE SYSTEM TRACKS ACROSS THE UPPER MIDWEST AND ITS ASSOCIATED COLD FRONT MOVES THROUGH CENTRAL INDIANA.
SUBFREEZING TEMPS REMAIN TRAPPED OVER THE COLUMBIA BASIN AND WITH THE WARMER AIR MOVING OVER THE TOP THE COLDER AIR. SNOW LEVELS ARE EXPECTED TO RISE AND THE WARMER AIR WILL EVENTUALLY INFLUENCE MOST AREAS AND TURN THE FROZEN PCPN TO RAIN BY THURSDAY NIGHT EXCEPT ACROSS SOME OF THE HIGHER LOCATIONS AND OVER THE YKM AND KITTITAS VALLEYS.
THE DRIER AIR IS THE RESULT OF HIGH PRESSURE MOVING INTO THE AREA. A TROUGH OF LOW PRESSURE WILL MOVE INTO EASTERN CANADA AND THE NORTHEAST UNITED STATES THURSDAY AND THURSDAY NIGHT AND BRING MORE RAIN TO THE REGION. DESPITE HIGH PRESSURE BUILDING IN. BUT THEN THE LOW LEVEL FLOW ALOFT TURNS MORE SOUTHEAST WITH TIME IN ADVANCE OF APPROACHING UPPER TROUGH. AFTER A BRIEF RESPITE OF QUIET WEATHER, CONDITIONS BECOME UNSETTLED AGAIN FOR THURSDAY AND THURSDAY NIGHT AS A STRONGLY OCCLUDED LOW PRESSURE SYSTEM TRACKS NORTHEASTWARD FROM THE GREAT LAKES TO JAMES BAY.
/ISSUED 1001 PM CST TUE DEC 15 2015/ CURRENT SFC ANALYSIS SHOWS A COLD FRONT STRETCHING FROM LOW PRESSURE OVER THE CNTL PLAINS ACROSS ERN OK/TX TO THE LOWER RIO GRANDE VALLEY. FAST MOVING BUT WEAK PACIFIC COLD FRONT WILL BE MOVING OUT OF CENTRAL TEXAS AND INTO THE TERMINALS LATE TNITE WITH RAIN AS WELL AS LOWERING CIGS/VIS TO LIFR. WITH THE APPROACHING FRONT AND WEAK LOW PRESSURE ALONG IT. WITH THE BEST CHANCES OF SEEING TSRA ALONG AND SE OF THE LOW AND FROPA. PRECIP WILL END FROM WEST TO EAST AS COOLER AND DRIER AIR FILTERS BEHIND THE FRONT. DML LIGHT TO MODERATE SOUTHEASTERLY WINDS WILL CONTINUE THIS EVENING AND OVERNIGHT IN ADVANCE OF A COLD FRONT CROSSING TEXAS. WINDS WILL BRIEFLY SUBSIDE AS WEAK LOW PRESSURE FORMS ALONG THE FRONT WEDNESDAY.
156 AM EST WED DEC 16 2015 FAIR AND RELATIVELY MILD WEATHER WILL CONTINUE ON WEDNESDAY BEFORE A COLD FRONT BRINGS PERIODS OF RAIN AND DRIZZLE TO THE REGION ON THURSDAY. TEMPERATURES ARE ON PACE FOR MINS IN THE LOWER TO MIDDLE 30S, WITH WINDS LIGHTENING. TEMPERATURES WILL BECOME COOLER THAN THE LAST SEVERAL DAYS WITH OVERNIGHT VALUES DIPPING INTO THE 30S. THE TARGET OF OPPORTUNITY DURING THIS PERIOD IS THE SIGNIFICANT LOW PRESSURE SYSTEM MOVING WEST OF US ACROSS THE GREAT LAKES ON THURSDAY. THE OCCLUDED/COLD FRONT HAS GOOD AGREEMENT IN THE MODELS SWEEPING THROUGH CNY/NEPA ON THURSDAY.
355 AM CST WED DEC 16 2015 This morning an upper trough extends from a low over SD back across NM. This trough will swing across the area today with high pressure aloft building in behind it.
1223 AM EST WED DEC 16 2015 DRY HIGH PRESSURE WILL BE OVER THE REGION THROUGH WEDNESDAY AFTERNOON. A STRONG COLD FRONT WILL CROSS THE AREA THURSDAY BRINGING RAIN TO THE AREA. MUCH COOLER HIGH PRESSURE WILL OVERSPREAD THE REGION BEHIND THE FRONT FOR THE WEEKEND. THE UPPER-LEVEL RIDGE ALONG THE EAST COAST EARLY WEDNESDAY WILL SHIFT EAST DURING THE AFTERNOON AS DEEP/SURFACE UPPER-LEVEL LOW MOVES FROM THE NORTHERN PLAINS INTO THE GREAT LAKES/SOUTHERN CANADA. MOST OF WEDNESDAY SHOULD BE DRY AS THE FOCUS FOR SHOWERS REMAINS SOUTH OF THE AREA NEAR THE WARM FRONT IN GEORGIA AND MOISTURE REMAINS SHALLOW. PRECIPITABLE WATER INCREASING WEDNESDAY NIGHT HOWEVER AS WARM FRONT LIFTS NORTH AND ISENTROPIC LIFT INCREASES. THE COLD FRONT IS FORECAST TO MOVE THROUGH THE AREA THURSDAY NIGHT.
WINDS ARE BEGINNING TO SHIFT AHEAD OF THE TRUE COLD FRONT NEAR THE I-35 CORRIDOR WITH THE TRUE FRONT STILL JUST WEST OF THE I-35 CORRIDOR LATE THIS EVENING. THIS FRONT WILL EVENTUALLY PUSH EASTWARD OVERNIGHT AND THROUGH THE MORNING HOURS ON WED WHICH WILL BRING AN END TO THE LOWER CEILINGS AND CONVECTION. CONTINUE TO DEVELOP ACROSS E TX/SE OK/EXTREME SW AR AHEAD OF A COLD FRONT. CONVECTIVE COVERAGE SHOULD INCREASE THROUGH SOME THROUGH THE OVERNIGHT HRS AS A POSITIVELY-TILTED UPPER TROUGH AXIS MOVES ACROSS THE SRN PLAINS.
314 AM CST WED DEC 16 2015 COOLER CONDITIONS WILL PREVAIL THE NEXT COUPLE OF DAYS ALONG WITH A CHANCE FOR SOME LIGHT SNOW SHOWERS ON THURSDAY. COOLER AIR THAT ADVECTED IN BEHIND THIS SYSTEM WILL KEEP HIGHS IN THE 30S ACROSS THE WESTERN OK PANHANDLE AND IN THE 40S ELSEWHERE TODAY. PUSHING ANOTHER COLD FRONT THROUGH THE AREA. THIS REINFORCING SHOT OF COLD AIR WILL KEEP HIGH TEMPS IN THE LOWER 30S TO LOWER 40S.
328 AM CST WED DEC 16 2015 THE LATEST WINTER WEATHER HEADLINES REMAIN IN TACT THIS MORNING AS A POTENT UPPER LEVEL LOW NOW MOVING INTO SOUTHWESTERN MINNESOTA CONTINUES TO GENERATE BANDS OF SNOW INTO SOUTH CENTRAL NORTH DAKOTA. HEAVY BANDED SNOW COMING TOGETHER AS FRONTOGENETICAL FORCING AND MAXIMUM ASCENT THROUGH THE DENDRITIC GROWTH ZONE (-12C TO -18C) WITH A PERSISTENT TROWAL SUSTAINING A WARM/MOIST FEED ALOFT PER 700MB-500MB EQUIVALENT POTENTIAL TEMPERATURE RIDGE AXIS. HIGHS TODAY WILL BE IN THE LOW TO MID 20S WITH OVERNIGHT LOWS RANGING BETWEEN 6 AND 15 ABOVE.
1239 AM EST WED DEC 16 2015 HIGH PRESSURE BUILDS INTO THE REGION THROUGH WEDNESDAY.
1001 PM CST TUE DEC 15 2015 CURRENT SFC ANALYSIS SHOWS A COLD FRONT STRETCHING FROM LOW PRESSURE OVER THE CNTL PLAINS ACROSS ERN OK/TX TO THE LOWER RIO GRANDE VALLEY. FAST MOVING BUT WEAK PACIFIC COLD FRONT WILL BE MOVING OUT OF CENTRAL TEXAS AND INTO THE TERMINALS LATE TNITE WITH RAIN AS WELL AS LOWERING CIGS/VIS TO LIFR. WITH THE APPROACHING FRONT AND WEAK LOW PRESSURE ALONG IT. WITH THE BEST CHANCES OF SEEING TSRA ALONG AND SE OF THE LOW AND FROPA. PRECIP WILL END FROM WEST TO EAST AS COOLER AND DRIER AIR FILTERS BEHIND THE FRONT. DML LIGHT TO MODERATE SOUTHEASTERLY WINDS WILL CONTINUE THIS EVENING AND OVERNIGHT IN ADVANCE OF A COLD FRONT CROSSING TEXAS. WINDS WILL BRIEFLY SUBSIDE AS WEAK LOW PRESSURE FORMS ALONG THE FRONT WEDNESDAY.
WITH WIDESPREAD FREEZING TEMPERATURES THIS MORNING AND TONIGHT.
MEANWHILE, SFC TEMPERATURES HAVE DROPPED INTO THE LOW TO MID 50S OVER THE WESTERN HALF OF THE CWA (NW/CENTRAL AL) AND UPPER 40S OVER THE EASTERN HALF OF THE CWA (S MIDDLE TN/NE AL). THESE TEMPERATURES SHOULD CONTINUE TO DROP OVERNIGHT DROPPING CLOSE TO DEWPOINT TEMPERATURES IN THE LOW TO MID 40S. 77 VFR CONDITIONS SHOULD REMAIN ACROSS N AL/S MIDDLE TN FOR UNTIL 16/20Z- 23Z WHEN MVFR CIGS AND -RA DEVELOP AS A WARM FRONT MOVES NORTHWARD.
A PERIOD OF RAIN IS EXPECTED ON THURSDAY AS A COLD FRONT MOVES THROUGH. STILL A FEW SPITS OF DRIZZLE POSSIBLE ACROSS THE NORTH AS A WEAK BACKDOOR COLD FRONT STALLS OUT THERE LATE THIS EVENING. WILL RUN WITH NUMS A LITTLE MILDER THAN MOS GUID WITH EVERYBODY ABOVE FREEZING. UPPER RIDGING OVERHEAD PROMISES NICE/MILDER WEATHER.
1147 PM CST TUE DEC 15 2015 LITTLE CHANGE TO THE TAFS AS THE COLD FRONT CONTINUES TO APPROACH THE STATE FROM THE WEST WITH RAIN DEVELOPING OUT AHEAD OF THE FRONT.
PREFRONTAL BOUNDARY WILL GRADUALLY MOVE ACROSS NORTHERN SECTIONS OF THE CWA BY DAWN AND LATE MID MORNING IN THE LOWER VALLEY. AS COOLER AIR GRADUALLY FILTERS INTO THE CWA DURING THE DAY. COOLER TEMPERATURES ARE EXPECTED EARLY THU MORNING WITH MOST LOCATIONS REACHING THE MID TO LOW 40S AND THE 50S ALONG THE COAST.
1154 PM CST TUE DEC 15 2015 Low pressure currently situated over SE Nebraska will continue to move northeastward overnight with a trailing cold front to approach central IL late in the night. Temperatures will remain quite mild in the lower 40s ahead of the front for overnight lows generally upper 30s to lower 40s. Weak high pressure is gradually weakening as the southeast low level flow begins to strengthen around a deepening low center over the west central plains. Weather system to the west and northwest of the CWA will continue to move northeast into the western Great Lakes region Wednesday with a trailing cold front sweeping through the area.
AN UPPER TROUGH WILL APPROACH THE AREA WEDNESDAY NIGHT INTO THURSDAY.
HIGH PRESSURE OVER THE EASTERN STATES TODAY WILL PROVIDE DRY CONDITIONS AND SUNNY SKIES INITIALLY. HOWEVER A LOW PRESSURE SYSTEM OVER THE MISSOURI RIVER VALLEY AND COLD FRONT FROM MISSOURI INTO THE SOUTHERN PLAINS MOVES EAST INTO THE MS VALLEY THIS AFTERNOON AND THEN ACROSS EAST TENNESSEE TONIGHT AND THURSDAY MORNING. OVERNIGHT HOURS WILL ALLOW TEMPERATURES IN THESE AREAS TO DROP TO BELOW FREEZING, ESPECIALLY IN THE HIGHER ELEVATIONS.
335 AM CST WED DEC 16 2015 A STRONG UPPER LOW WILL LIFT TOWARD THE GREAT LAKES TODAY AND ALLOW COOL AND DRY TO FILTER INTO THE SOUTHERN PLAINS. A SECONDARY UPPER TROUGH WILL COME IN BEHIND THE DEPARTING UPPER LOW AND TRANSLATE ACROSS THE SOUTHWESTERN U. LOW LEVEL COLD AIR ADVECTION WILL RESULT IN A MUCH COOLER DAY ACROSS THE REGION WITH AFTERNOON HIGHS FROM THE LOWER 50S IN THE NORTHWEST TO AROUND 60 IN THE SOUTH. AN AMPLIFIED RIDGE OF HIGH PRESSURE WILL BUILD ACROSS THE WESTERN U.
252 AM CST WED DEC 16 2015 Low pressure moving through the upper Midwest with a trailing cold front moving through our area over the next few hours will push showers now over our eastern cwfa off to the east. Clouds will linger a bit in some areas but in general drier and cooler/colder air will move in on gusty southwest and west winds.
316 AM CST WED DEC 16 2015 UPPER LEVEL LOW WHICH BROUGHT BREEZY CONDITIONS TO THE REGION YESTERDAY CONTINUE TO EJECT INTO THE NORTHERN PLAINS THIS MORNING WITH A TRAILING TROUGH EXTENDING TO NORTHERN BAJA CALIFORNIA. THE TROUGH AXIS WILL MORE OR LESS BE OVERHEAD BY 00Z THU AHEAD OF YET ANOTHER IMPULSE DIVING ALONG THE FRONT RANGE OF THE ROCKIES. ITS TRAILING UA TROUGH WAS DRAPED ACROSS THE SOUTHERN PLAINS BUT WILL EXIT THE REGION TOMORROW WITH LITTLE FANFARE.
IT WAS EXITING THE MEAN TROF AND WILL CONT NE INTO MN TODAY. A BROAD TROF WILL REMAIN OVER THE PLAINS IN ITS WAKE. THIS TROF WILL DIVE SSE THRU THE WRN USA AND WILL BE OVER CO/NM BY SUNRISE THU. THE HIGHEST OFFICIAL GUST WE'VE SEEN WAS 37 KTS AT AUH. P/CLOUDY N AND E WHERE SUBSTANTIAL STRATOCU WILL FORM WITHIN THE THERMAL TROF. BUT MULTI-LAYERED MID-HIGH CLOUDS WILL INVADE FROM THE W AFTER MIDNIGHT WITH THE APPROACHING TROF.
1224 AM EST WED DEC 16 2015 HIGH PRESSURE WILL BRING CLEARING AND WARMING TEMPERATURES LATER TODAY. A COLD FRONT WILL BRING RAIN WEDNESDAY NIGHT AND THURSDAY. ONCE THE LOW CLOUDS DISSIPATE HOWEVER. WE WILL ALREADY SEE MID/HIGH CLOUDS INCREASING ON THE BACK SIDE OF THE QUICKLY DEPARTING H500 RIDGE AXIS. COLD FRONT TO APPROACH WEDNESDAY NIGHT AND CROSS ON THURSDAY.
1120 PM CST TUE DEC 15 2015 COLD FRONT IS STILL ON SCHEDULE TO MOVE ACROSS SOUTHEAST TEXAS TONIGHT THROUGH TOMORROW MORNING. /ISSUED 931 PM CST TUE DEC 15 2015/ A COLD FRONT REMAINS DRAPED JUST NORTHWEST OF THE FORECAST AREA THIS EVENING. BUT AS THE MID/UPPER LOW OVER THE NORTHERN PLAINS LIFTS FARTHER NORTHEAST TONIGHT EXPECT THE FRONT TO MOVE ACROSS SOUTHEAST TEXAS. /ISSUED 311 PM CST TUE DEC 15 2015/ WEAK SHOWERS CONTINUE TO INCREASE IN COVERAGE AHEAD OF COLD FRONT PUSHING ACROSS CENTRAL TX LATE THIS AFTERNOON. RAIN CHANCES WILL BE SHUNTED AWAY FROM THE AREA AND USHER IN COOLER AND DRIER AIR. MAX TEMPS WEDNESDAY WILL BE 5-10 DEGREES COOLER THAN TODAY.
TOTAL SNOW ACCUMULATIONS ARE GENERALLY BETWEEN 5 TO 10 INCHES ACROSS THE HIGH PLAINS WITH THE EXCEPTION OF CONVERSE. WILL KEEP THE HEADLINES FOR THE HIGH PLAINS FOR ANOTHER 2 OR 3 HOURS. UPPER LOW PROGRESSING MUCH AS THE MODELS HAVE FORECASTED. WITH THE UPPER LOW MOVING FROM CENTRAL NEBRASKA EARLY THIS EVENING. BUT A FEW INCHES ARE EXPECTED IN THE MOUNTAINS AND PERHAPS 1 TO 2 INCHES IN THE HIGH VALLEYS AND LOCATIONS SOUTHEAST. HIGHS WILL STRUGGLE TO GET OUT OF THE LOW 20S FOR THURSDAY. TEMPS ON SUN/MON WILL BE SLIGHTLY COOLER AND THERE WILL BE A CHANCE OF OROGRAPHIC SNOW IN THE SIERRA MADRE AND SNOWY RANGES AS PACIFIC MOISTURE STREAMS INTO THE REGION IN INCREASING ZONAL FLOW ALOFT.
/ISSUED 615 PM EST TUE DEC 15 2015/ HIGH PRESSURE AND DRY AIR WILL GIVE WAY TO A VERY MOIST WAVE ALONG THE APPROACHING FRONTAL SYSTEM BRINGING PRECIP INTO NORTH AND CENTRAL GA WED AFTERNOON/EVENING. UPPER LEVEL RIDGE AXIS WILL PUSH EASTWARD THROUGH WEDNESDAY. GUIDED BY LONGWAVE TROUGH BEHIND IT. FRONT TAKES ITS TIME CLEARING TO AREA AND REALLY IT TAKES THE SECONDARY PUSH OF BROADER UPPER TROUGH THURSDAY EVENING TO PUSH ALL ACTIVITY OUT OF THE SOUTHERN ZONES.
100 PM EDT SUN MAY 3 2015 A LARGE RIDGE OF HIGH PRESSURE WILL GRADUALLY MOVE OFF THE COAST TODAY. THE HIGH WILL INFLUENCE THE WEATHER THROUGH MID WEEK. LOW PRESSURE WILL DEVELOP NEAR THE BAHAMAS MID WEEK THEN DRIFT ERRATICALLY OFF THE SOUTHEAST COAST THROUGH THE END OF THE WEEK. CLOSER TO THE COAST HIGHS MAINLY IN THE LOW TO MID 70S. OR EVEN COOLER WHERE LIGHT ONSHORE FLOW PREVAILS OVER COLD SOUND/OCEAN WATER TEMPS.
949 AM EDT SUN MAY 3 2015 HIGH PRESSURE OVER THE AREA TODAY WILL MAINTAIN SUNNY AND DRY CONDITIONS WITH SEASONABLE TEMPERATURES TODAY. MAX TEMPERATURES WILL CLIMB INTO THE LOWER 80S INLAND AND REMAIN IN THE MID 70S AT THE BEACHES. HIGH PRESSURE JUST NORTH OF THE AREA WILL KEEP EASTERLY WINDS AT 10 KTS OR LESS TODAY.
HIGH PRESSURE WILL BE IN CONTROL THROUGH THE ENTIRE WEEK WITH UPPER HEIGHT RISES AND A GRADUAL WARMING TREND. A CLOSED UPPER LOW OFF THE FLORIDA/GEORGIA COAST WILL KEEP ALABAMA ON THE WARM AND SUBSIDENCE SIDE OF THIS SYSTEM.
HAVE ALLOWED AN EFFECTIVE WARM FRONT TO SET UP NEAR INTERSTATE 80 FROM IOWA CITY EASTWARD. THE MAIN COLD FRONT RAN FROM NORTHWEST MINNESOTA INTO SOUTHWEST SOUTH DAKOTA. IF THE HIGH CS/CI CLOUDS DISSIPATE QUICKLY.
639 AM CDT SUN MAY 3 2015 WIDESPREAD VFR CONDITIONS WILL CONTINUE AS HIGH PRESSURE DOMINATES.
1052 AM EDT SUN MAY 3 2015 A RIDGE OF HIGH PRESSURE BUILDING INTO THE NORTHEAST WILL BRING FAIR SKIES, WARM TEMPERATURES, AND PLEASANT SPRING WEATHER TO NY AND PA THROUGH MONDAY. A COLD FRONT WILL PUSH SCATTERED SHOWERS ACROSS THE REGION MONDAY NIGHT. UL RIDGE WILL PROGRESS FROM THE OHIO VALLEY INTO THE MID ATLANTIC THROUGH MONDAY, WHILE A TROF PROGRESSES INTO ONTARIO PROVINCE WITH A SURFACE CYCLONE DEVELOPING NEAR THE US/CANADA BORDER. COLD FRONT COMES THROUGH MONDAY NIGHT WITH MINIMAL INSTABILITY AND LIMITED MOISTURE.
Could see some convection develop near the higher terrain regions later this afternoon then move east into the adjacent plains. /ISSUED 443 AM CDT Sun May 3 2015/ The upper ridge over the area slowly slides east today as an upper trough moves ashore the CA coast. This trough will bring a chance of the storms to the region as it moves east.
HIGH PRESSURE OVER THE PACIFIC NORTHWEST WILL PRODUCE DRY AND WARMER WEATHER TODAY.