Aikyam-Lab/Synoptic-Bench huggingface dataset:
613 PM CST SUN FEB 1 2015 FOR 00Z TAFS /ISSUED 231 PM CST SUN FEB 1 2015/ THE 20Z SURFACE ANALYSIS INDICATED THAT THE COLD FRONT WAS EXTENDING SOUTHWEST FROM NEAR ST. A LARGE AREA OF MAINLY LIGHT RAIN WAS EXITING THE FORECAST AREA WITH ANOTHER BAND OF RAIN/ISOLATED STORMS AHEAD OF THE COLD FRONT DEVELOPING/MOVING INTO NORTH MISSISSIPPI. TEMPS WERE IN THE MID TO UPPER 40S IN SOUTHERN MIDDLE TENNESSEE AND IN THE LOW TO MID 50S IN NORTH ALABAMA. THE SHORT TERM MODELS ARE IN GOOD AGREEMENT INVOLVING THE COLD FRONT RAPIDLY MOVING EAST THROUGH THE FORECAST AREA BY 06Z. A WEAK SECONDARY MID LEVEL TROUGH WILL SWING THROUGH THE REGION BEHIND THE COLD FRONT BY AROUND 09Z.
/ISSUED 243 PM CST SUN FEB 1 2015/ THE APPROACHING COLD FRONT IS JUST WEST OF THE CWA AT THIS TIME. ARCTIC HIGH PRESSURE WILL SETTLE OVER THE REGION MONDAY INTO MONDAY NIGHT.
742 PM EST SUN FEB 1 2015 LOW PRESSURE WILL APPROACH AND CROSS THE REGION THROUGH MONDAY. HAVE ADDED FREEZING RAIN FOR THE NEXT COUPLE OF HOURS AROUND THE PITTSBURGH METRO AREA. REPORTS OF FREEZING RAIN HAVE COME IN FROM BEAVER AND BUTLER COUNTIES. AND FREEZING RAIN IS ALSO BEING OBSERVED AT THE NWS OFFICE. WILL CONTINUE TO MONITOR EVOLUTION OF FREEZING RAIN. ADDNL SNW SHWRS ARE EXPD MON AS THE UPR TROF AXIS CROSSES AND STRONG COLD ADVCTN SETS UP. BUT MSTR THINS QUICKLY IN THE SNW GROWTH RGN WHICH SHOULD HELP LIMIT ACCUMULATIONS TO ARND A COUPLE OF INCHES IN THE RIDGES. COLD HIGH PRESSURE WILL BRING AN END TO LINGERING SNOW SHOWERS WITH CLOUDS BREAKING SOMEWHAT MONDAY NIGHT.
BANDS OF RAIN WILL CONTINUE TO PUSH ACROSS THE REGION TONIGHT AHEAD OF AN APPROACHING COLD FRONT. CHATTANOOGA AIRPORT, TN 36 39 25 50 / 100 60 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 37 38 24 47 / 100 70 0 0 OAK RIDGE, TN 35 36 25 47 / 100 60 0 0 TRI CITIES AIRPORT, TN 38 39 20 44 / 100 70 10 0 NC.
WINDS WILL TURN TO W-SW AND BECOME GUSTY AS A COLD FRONT MOVES THROUGH EARLY IN THE MORNING.
A STRONG AREA OF HIGH PRESSURE WILL HOLD ALONG THE CALIFORNIA COAST.
743 PM EST SUN FEB 1 2015 SOUTHERLY FLOW IS BECOMING MORE PRONOUNCED THIS EVENING AHEAD OF AN APPROACHING COLD FRONT. VFR CONDITIONS EXPECTED INTO THE EARLY MORNING HOURS BEFORE MVFR CIGS WILL BE POSSIBLE AS LOW CLOUDS MOVE IN AHEAD OF AN APPROACHING COLD FRONT. LOW PRESSURE OVER THE OHIO VALLEY WILL TRACK TO NEW ENGLAND COAST WATERS BY LATE MON. WITH A COLD FRONT SWEEPING THROUGH THE GULF THEN ACROSS THE COASTAL WATERS MON WITH SOME SHOWERS. HIGH PRESSURE DOMINATES THE GULF TUE THROUGH THU. THIS HIGH SLIDES OFF TO THE EAST DURING THE END OF THE WEEK AS LOW PRESSURE FORMS ON A FRONTAL BOUNDARY IN THE GULF. THERE IS SOME UN-CERTAINTY WITH TIMING AND LOCATION OF THIS LOW BUT THUNDERSTORMS AND ROBUST TO STRONG WINDS MAY BE POSSIBLE.
WINDY AND COOLER CONDITIONS WERE OCCURRING ACROSS ALL BUT OUR FAR SOUTHEAST COUNTIES WHERE THE COLD FRONT IS EXPECTED TO MOVE THROUGH LATER THIS AFTERNOON. OVERNIGHT LOW TEMPERATURES WILL RANGE FROM THE MID 20S ACROSS THE RED RIVER VALLEY TO THE LOWER 30S IN CENTRAL TEXAS.
/ISSUED 313 PM CST SUN FEB 1 2015/ BLUSTERY AFTERNOON ACROSS MUCH OF NE OK IN THE WAKE OF THE COLD FRONT THAT HAS MOVED THROUGH THE ENTIRE AREA. AS HIGH PRESSURE CONTINUES TO BUILD SOUTH INTO THE AREA OVERNIGHT.
815 PM CST SUN FEB 1 2015 THE COLD FRONT WAS MOVING OFF THE COAST AT 8 PM. PRE-FRONTAL TROUGH IS WORKING THROUGH KSGR/KHOU WITH A FEW SHOWERS AND ISO TSRA OVER KHOU. COLD FRONT WAS PUSHING THROUGH CONROE TO COLUMBUS.
/ISSUED 433 PM CST SUN FEB 1 2015/ A SOMEWHAT WIDE AND BROKEN LINE OF SHOWERS AND THUNDERSTORMS HAS DEVELOPED AND IS PUSHING THROUGH THE AREA THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. SUNNY SKIES DRIER AIR AND SIGNIFICANTLY COOLER TEMPERATURES IN STORE FOR MONDAY AS HIGH PRESSURE BUILDS IN BEHIND THE FRONT.
AN UPPER RIDGE REMAINS OVER THE WEST COAST THIS AFTN WITH A NORTHWESTERLY FLOW OVER THE CWA. MID AND HIGH CLOUDS STREAMING THROUGH THE RIDGE HAVE REACHED THE NWRN CWA AND SHOULD INCREASE OVERNIGHT. THE UPSTREAM RIDGE REMAINS MORE OR LESS IN PLACE THRU WED BUT A SERIES OF WEAK SHORT WAVE TROFS WILL MOVE OVER IT SPREADING A FAIRLY MOIST AIRMASS INTO THE NRN CWA. THE UPSTREAM RIDGE FINALLY STARTS TO SHIFT INLAND WED AND PRECIP BEGINS TO TAPER OFF.
728 PM CST SUN FEB 1 2015 COLD FRONT NOW APPROACHING I-65. THE LOW LEVEL MOISTURE MAY HANG ON ACROSS THE PLATEAU UNTIL AROUND 18Z TOMORROW.
620 PM EST SUN FEB 1 2015 PRECIPITATION ASSOCIATED WITH LOW PRESSURE TRAVELING ACROSS OHIO WILL CONTINUE TONIGHT BEFORE ENDING ON MONDAY. MUCH COLDER AIR WILL ARRIVE LATE TONIGHT INTO MONDAY IN A NORTHERLY FLOW BEHIND THE LOW.
PRE-FRONTAL TROUGH IS WORKING THROUGH KSGR/KHOU WITH A FEW SHOWERS AND ISO TSRA OVER KHOU. COLD FRONT WAS PUSHING THROUGH CONROE TO COLUMBUS.
611 PM EST SUN FEB 1 2015 LOW PRESSURE WILL APPROACH AND CROSS THE REGION THROUGH MONDAY. ADDNL SNW SHWRS ARE EXPD MON AS THE UPR TROF AXIS CROSSES AND STRONG COLD ADVCTN SETS UP. BUT MSTR THINS QUICKLY IN THE SNW GROWTH RGN WHICH SHOULD HELP LIMIT ACCUMULATIONS TO ARND A COUPLE OF INCHES IN THE RIDGES. COLD HIGH PRESSURE WILL BRING AN END TO LINGERING SNOW SHOWERS WITH CLOUDS BREAKING SOMEWHAT MONDAY NIGHT.
SCATTERED CLOUD DECKS PREVAIL SOUTH OF THE ISLANDS OVER THE WARMER WATERS OF THE STRAITS OF FLORIDA. TEMPERATURES ARE HOVERING IN THE LOW 70S AND DEW POINTS ARE CONTINUING TO RISE VERY GRADUALLY AS EAST-SOUTHEASTERLY WINDS ARE GRADUALLY SHIFTING TO A SOUTH- SOUTHWESTERLY DIRECTION. WIND SPEEDS HAVE REMAINED STUBBORNLY INTENSE ACROSS THE WARMER WATERS OF THE STRAITS OF FLORIDA AND HAWK CHANNEL NEAR 20 KNOTS. THE REMAINING NEARSHORE WATERS NORTH OF THE ISLAND CHAIN ARE SIGNIFICANTLY LIGHTER WINDS FROM 10 TO 15 KNOTS OWING TO REDUCED MIXING DUE TO COOLER NEAR SURFACE TEMPERATURES. RESULTING IN NEAR STAGNANT TEMPERATURES IN THE LOWER 70S TO NEAR 70 THROUGHT THE PERIOD.
715 PM EST SUN FEB 1 2015 LOW PRESSURE WILL APPROACH AND CROSS THE REGION THROUGH MONDAY. ADDNL SNW SHWRS ARE EXPD MON AS THE UPR TROF AXIS CROSSES AND STRONG COLD ADVCTN SETS UP. BUT MSTR THINS QUICKLY IN THE SNW GROWTH RGN WHICH SHOULD HELP LIMIT ACCUMULATIONS TO ARND A COUPLE OF INCHES IN THE RIDGES. COLD HIGH PRESSURE WILL BRING AN END TO LINGERING SNOW SHOWERS WITH CLOUDS BREAKING SOMEWHAT MONDAY NIGHT.
530 PM CST Sun Feb 1 2015 A strong cold front was sweeping across the forecast area early this afternoon, with temperatures rapidly dropping in its wake as brisk northwest winds usher in a much colder airmass. Expect temperatures to continue to fall into the 20s by this evening, eventually dropping into the low to mid teens by Monday morning. With upstream obs across Nebraska already in the low single digits, it's not beyond the realm of possibility that a few locations across southeastern Kansas may flirt with sub-10 degree lows. The best chance for light snow late this evening will be across Central Missouri as the upper level trough axis swings through.
The mid level cold front is exiting the northeastern portion of Washington this evening, so the Advisory for the Okanogan Highlands, Northeast Mountains and the Spokane Area has been allowed to expire.
REGION SITS UNDER CLEAR SKIES AT THIS TIME WITH TEMPS RANGING IN THE LOW TEENS. AFTERNOON TEMPERATURES HAVE STRUGGLED TO REACH THE MIDDLE TEENS TO LOWER 20S WHICH ENDED UP BEING COOLER THAN WHAT MOST GUIDANCE INDICATED. SO TENDED TO GO A LITTLE UNDER THE WARMER GUIDANCE.
433 PM CST SUN FEB 1 2015 A SOMEWHAT WIDE AND BROKEN LINE OF SHOWERS AND THUNDERSTORMS HAS DEVELOPED AND IS PUSHING THROUGH THE AREA THIS AFTERNOON AHEAD OF AN APPROACHING COLD FRONT. SUNNY SKIES DRIER AIR AND SIGNIFICANTLY COOLER TEMPERATURES IN STORE FOR MONDAY AS HIGH PRESSURE BUILDS IN BEHIND THE FRONT.
316 AM CST MON MAR 2 2015 FRONTAL BOUNDARY FROM NORTHERN GULF COAST TO NEAR LAFAYETTE AND BATON ROUGE TO SHIFT NORTHWEST THIS AFTERNOON REPLACING THE COLD AIRMASS ACROSS THE ARKLATEX WITH A MUCH WARMER AIRMASS.
SHIFTING RAIN/FREEZING RAIN/SNOW LINE NORTHWARD AS WELL. STRONG ISENTROPIC UPGLIDE AHEAD OF THE LOW WILL LEAD TO INCREASING PRECIPITATION CHANCES TOWARD MIDNIGHT ACROSS ALL OF THE CWA. TEMPERATURES AT THIS TIME WILL LIKELY BE BELOW FREEZING. BUT ROBUST MOISTURE INFUSION WILL PUSH TEMPS ABOVE CORRESPONDING TO LIKELY ORIENTATION OF WARM FRONT. ESPECIALLY NORTH OF WARM FRONT. SOUNDINGS HERE SHOW A SWATH OF MIXED PRECIPITATION IS POSSIBLE FROM FREEZING RAIN TO SLEET AND SNOW EXTENDING FROM WEST CENTRAL IOWA INTO SOUTHERN PARTS OF NORTHEAST NEBRASKA. SO UPSHOT OF THE ABOVE POINTS TO A PERIOD OF POTENTIAL FREEZING DRIZZLE/RAIN ALONG AND SOUTH OF I-80 THROUGH ABOUT 06Z.
UPPER LEVEL TROUGHING WILL DIG FROM WESTERN CANADA INTO THE NORTH CENTRAL CONUS MONDAY THROUGH MIDWEEK. GRADUALLY ABSORBING THE REMNANT UPPER LOW OVER SOUTHERN CALIFORNIA. AS THE UPPER TROUGH SLIDES SLOWLY EAST ACROSS THE AREA.
THE BIGGER CONCERN IS THE LOW PRESSURE SYSTEM CHURNING OVER THE FAR SOUTHWESTERN U. CONFIDENCE IS INCREASING THAT THIS PRECIPITATION WILL BE FALLING AT THE SAME TIME THAT STRONG NORTH-NORTHWEST WINDS OF 20 TO 35 MPH WITH GUSTS TO 45 MPH WILL BE DEVELOPING BEHIND A COLD FRONT FORECAST TO ACCELERATE QUICKLY INTO THE GREAT LAKES REGION ON TUESDAY. AN UPPER LEVEL TROUGH CURRENTLY CROSSING THE REGION IS PRODUCING SCATTERED SNOW SHOWERS OVER MOST OF THE AREA. DECENT MOISTURE ADVECTION WILL DEVELOP ON MONDAY AHEAD OF AN UPPER LEVEL TROUGH OUT WEST. A STRONG COLD FRONT WILL PUSH ACROSS THE REGION.
A WEAK COLD FRONT WILL BRING INCREASING CLOUDS AND A CHANCE FOR RAIN AND MOUNTAIN SNOW TONIGHT AND EARLY MONDAY. THE UPPER LEVEL RIDGE WHICH HAS BEEN SO DOMINANT THIS WINTER IS THEN EXPECTED TO RETURN.
HIGH PRESSURE TO THE NORTH OF THE AREA TODAY AND A FRONT MOVING OFF THE MID ATLC COAST WILL PUSH A WEAK FRONTAL BOUNDARY/WIND SHIFT BOUNDARY ACROSS THE CENTRAL FL PENINSULA THIS AFTN. AFTER THE MORNING FOG/STRATUS BREAKS UP INTO EARLY AFTERNOON SHOULD SEE A WARM AFTERNOON WITH HIGHS AROUND 80 ACROSS THE SOUTH AND COOLER IN THE MID 70S VOLUSIA COAST AND UPPER 70S BREVARD COAST WITH THE COOLER NEARSHORE SURF TEMPS IN THE UPPER 50S TO LOWER 60S. A REINFORCING HIGH PRESSURE CENTER WILL APPROACH THE MID ATLC AND KEEP A LIGHT ONSHORE FLOW ACROSS THE AREA.
THE ECMWF REMAINS ON THE LOW SIDE WITH STORM TOTAL QPF WITH A MORE WIDESPREAD 0.
DEVELOPING SOUTHWEST WINDS ARE EXPECTED TO MOVE OUT THE COOL AIR FROM WEST TO EAST; HOWEVER, A COLD FRONT IS STILL SET TO ENTER NORTHERN OKLAHOMA AROUND MID-DAY BRINGING GUSTY NORTH WINDS. THIS WILL QUICKLY BE REPLACED BY COLDER AIR AND A TRANSITION TO FREEZING RAIN/SLEET/ SNOW NORTH TO SOUTH.
THERE WAS AN UPPER LEVEL TROUGH OVER THE NW ONTARIO AND THE NORTHERN PLAINS. TEMPERATURES WERE IN THE LOW TO MIDDLE 20S. THE UPPER LEVEL TROUGH WILL MOVE THROUGH THE REGION. THE TROUGH AND COOL WNW FLOW WILL LIKELY BRING A PERIOD SCT/BKN CLOUD COVER AND SCATTERED SNOW FLURRIES THROUGH THE NORTHLAND. THERE WILL BE INCREASING SOUTHERLY FLOW AS LOW PRESSURE TROUGH MOVES INTO THE NORTHERN HIGH PLAINS. SUNNY DAYS ARE RESULTING IN WARMER THAN GUIDANCE TEMPERATURES DUE TO THE THE ALBEDO EFFECT FROM DARK BODY PINE TREES. INCREASED THE HIGHS OVER MOST GUIDANCE AND THE PREVIOUS FORECAST. THERE REMAINS GOOD MODEL AGREEMENT THAT THE NORTHERN STREAM OF A LONG WAVE TROUGH DIGS ACROSS MANITOBA/ONTARIO MONDAY NIGHT. THE STRENGTHENING INVERTED TROUGH WILL SWEEP OVER THE NORTHLAND AND BRING AT LEAST FEW INCHES TO MUCH OR ALL OF THE FORECAST AREA.
HIGH PRESSURE IS CENTERED OVER THE MID MISSISSIPPI VALLEY WITH TROUGHING STRENGTHENING IN THE LEE OF THE ROCKIES. WARM ADVECTION WILL BE IN PLACE TODAY AND TONIGHT ACROSS THE PLAINS AS THE SHARP UPPER TROUGH REMAINS PLANTED OVER THE WESTERN CONUS. WILL MENTION SOME LIGHT FREEZING RAIN/DRIZZLE NEAR I-70 WHERE TEMPS MAY OVER NEAR FREEZING FOR A COUPLE HOURS TONIGHT. SOME LIGHT SNOW WILL BE POSSIBLE TUE INTO TUE NIGHT WITH THE HIGHER CHANCES OVER FAR SOUTHEAST KS. HIGHS ON WED WILL BE THE COLDEST THROUGH THIS FORECAST PACKAGE AS THEY STRUGGLE TO REACH THE FREEZING MARK. WHICH IS THE LOW 50S. A STRONG COLD FRONT IS EXPECTED TO SWEEP ACROSS THE AREA ON TUE. MUCH COLDER TEMPS WILL BE IN PLACE WED WHICH WILL KEEP RH'S ON THE HIGH SIDE.
840 PM PST SUN MAR 1 2015 NEW MARINE DISCUSSION A MOIST AND UNSTABLE AIR MASS IN PLACE FROM A COLD UPPER LOW PRESSURE SYSTEM WILL BRING SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS TO THE AREA THROUGH MONDAY.
HIGH PRESSURE BUILDS INTO THE REGION MONDAY NIGHT AND TUESDAY FOR DRIER WEATHER.
THE VISIBILITY MAY IMPROVE WITH THE DRIER COOLER AIR FLOWING INTO THE COASTAL COUNTIES BUT THAT MAY BE OFFSET BY THE COOLING AND SST IN THE BAYS.
THIS MATCHES WELL WITH THE HIGHER MAV GUIDANCE WINDS AND SUPPORTED BY SREF 30 MPH SUSTAINED WIND PROBABILITIES. OTHER CONCERN IS HOW FAST THE WARMER AIR MOVES INTO THE AREA FROM THE WEST.
THE FRONT WILL SHIFT BACK THROUGH LATE TUESDAY NIGHT OR EARLY WEDNERSDAY AS A WARM FRONT.
/ISSUED 417 PM CST SUN MAR 1 2015/ THE NEXT TO LAST IN A SERIES OF STORMS SYSTEMS SLATED TO IMPACT THE TX AND OK PNHDLS IS A CLOSED LOW OFF THE SRN CA COAST. LATEST MODEL RUNS HINT THAT OUR FCST AREA WILL BE GENERALLY DRY SLOTTED FROM THIS NEXT STORM SYSTEM WITH ANY PRECIPITATION THAT OCCURS LIKELY THE RESULT OF AREAS OF FREEZING DRIZZLE TONIGHT AND MONDAY MORNING. THE LAST IN THE SERIES OF STORM SYSTEMS WILL BE A FAST MOVING UPPER LEVEL TROF AND ITS ATTENDANT SFC COLD FRONT.
AN UPPER LEVEL TROUGH WILL LINGER OVER THE GREAT BASIN THROUGH MONDAY THEN SHIFT EAST LATE TUESDAY. THE ELONGATED TROUGH THAT HAS BEEN OVER THE WESTERN CONUS THE PAST COUPLE OF DAYS IS NOW ORIENTED WITH ITS AXIS EXTENDING FROM SOUTH-CENTRAL IDAHO THROUGH CENTRAL CALIFORNIA WITH A CLOSED LOW JUST OFF THE CALIFORNIA COAST. THIS AREA WILL SPREAD NORTH OVERNIGHT AND INTO TOMORROW ALONG THE LEADING EDGE OF A H7 WARM FRONT. WITH THE TROUGH AXIS CROSSING UTAH TOMORROW EVENING. ANOTHER TROUGH IS STILL PROGGED TO DROP IN FROM THE NORTHWEST ON TUESDAY. PUSHING A COLD FRONT THROUGH THE AREA THAT IS EXPECTED TO CONTINUE TO BRING SNOW TO THE MOUNTAINS AS WELL AS THE NORTHERN AND WESTERN VALLEYS INCLUDING THE WASATCH FRONT. FILLMORE AND DELTA ALL HAVE DEWPOINTS ABOVE FREEZING.
318 AM EST MON MAR 2 2015 A DEEP LAYER RIDGE, WITH H5 HEIGHTS NEAR 591DM, WILL BE THE MOST IMPACTFUL WEATHER FEATURE THIS WEEK, AS IT MOVES FROM THE SOUTHWEST GULF OF MEXICO, TO THE WESTERN ATLANTIC BY LATE WEEK. A CLOSED UPPER LOW, DIVING INTO BAJA CALIFORNIA EARLY THIS WEEK, WILL CARVE A DEEP TROUGH THROUGH THE FOUR CORNERS REGION. HOWEVER, THIS TROUGH WILL HAVE LITTLE SUCCESS MOVING EAST AND ALTERING THE PATTERN OVER SOUTH FLORIDA, UNTIL PERHAPS THIS WEEKEND.
Drier and warmer Tuesday onward. finally dissipating as cyclonic flow from the upper low affecting Socal weakens over the far Srn portion of our CWA. the effects of cyclonic flow from the upper low affecting Socal will be relaxing in our CWA and the energy from off the Pac NW coast dives Swd off the CA coast on Mon. Today the track of the low is centered further east than yesterday and mostly over land as it drops south. Snow levels will start out near the lower end of those values and rise a little in the afternoon. What looks like will happen is that as the system drops southward it will interact with the low over Southern California and the moisture that it is bringing up north and wrapping around into the crest.
AT 02Z, THE COLD FRONT WAS SITUATED BETWEEN CLARKSVILLE AND NASHVILLE TN, AND WAS PASSING THRU SW TN AND NWRN MS. A COLD FRONTAL PASSAGE WILL OCCUR AT KMSL BY ~08Z AND KHSV BY ~10Z WITH A WIND SHIFT TO A NORTHERLY DIRECTION.
A strong cold front will move south out of Canada and across the area after 18z. However, mid to late Monday morning will see a strong surface cold front sweeping southward through central Montana, reaching southwest Montana by Monday evening. Mountain locations will likely see anywhere from 3 to 8 inches with some of the higher peaks in Glacier Park possibly seeing up to 10 inches.
241 AM MST MON MAR 2 2015 THE LOCAL AREA WILL REMAIN MOSTLY DRY THROUGH TUESDAY UNDER THE INFLUENCE OF A LARGE RIDGE CENTERED OVER THE NORTHERN GULF OF MEXICO. A FEW WEAK WAVES ROTATING AROUND THE RIDGE WILL SKIRT THE WESTERN AND NORTHERN FRINGES WITH SLIGHT CHANCES OF FLURRIES/LIGHT SNOW.
WEAK COLD FRONT WILL PUSH OFF TO OUR SOUTH AND EAST BEFORE STALLING. MOISTURE WILL START TO RETURN NORTH OVERNIGHT AS THE FRONT STARTS TO WORK BACK NORTH AS A WARM FRONT. TEMPS MAY DIP TO NEAR OR EVEN BELOW FREEZING EARLY IN THE NIGHT. BUT EXPECT THAT BY THE TIME PRECIP ARRIVES TEMPS SHOULD BE ABOVE FREEZING AS THE WARM ADVECTION INCREASES.
ADDITIONAL SNOW DEVELOPS TUESDAY MORNING ALONG STRONG 850 TO 700 HPA FRONTOGENESIS ASSOCIATED WITH THE CANADIAN WAVE/COLD FRONT ACROSS SOUTHEAST SD INTO CENTRAL MN. WARM AIR ADVECTION SNOW FROM THE SOUTH AND COLD FRONTAL SNOW FROM THE NORTH COLLIDE ACROSS MUCH OF SOUTHERN MN/NORTHERN IA AND ALL OF WI. LOOK FOR 2 TO 5 INCHES OF SNOW ACROSS THE ENTIRE UPPER MS RIVER VALLEY WITH THE HIGHER AMOUNTS (4 TO 5 INCHES) ACROSS CENTRAL WI. BUT IF NORTHWARD SHIFTS IN THE LOW TRACK CONTINUE. ATTENTION QUICKLY TURNS TO STRONG WINDS IN THE WAKE OF THE COLD FRONT. WITH TEMPERATURES TUESDAY GENERALLY IN THE 20S TO THE LOWER 30S.
IS FOR WARMER AND WETTER DAY ON TUESDAY WITH SHWRS/TSTMS AHEAD OF ANOTHER COLD FRONT BY WED AM. IN RESPONSE TO WEAK PRESSURE RISES AHEAD OF SFC RIDGING OVER THE CNTRL PLAINS/MID MS VALLEY. WHERE THE HIGHER MVFR CIGS ARE THIS EVENING OVER THE RED RIVER COUNTIES OF EXTREME NE TX INTO ADJACENT SW AR N OF TXK. WITH THE SRN ZONES LOWERED A COUPLE DEGREES AS THEY HAD FALLEN COOLER THAN THEIR PREVIOUSLY FORECAST MINS.
SHORT TERM: (Through Late This Afternoon) Strong ridge of high pressure will move across Missouri into eastern Illinois and western Indiana today. With wind turning to the east and then southeast this afternoon and decent insolation, expect temperatures to rise above freezing across most if not all of the area.
GENERALLY BELIEVE VFR/MVFR CONDITIONS WILL PREVAIL WITH THE HIGHEST CHANCES FOR VFR CONDITIONS OVER NORTHERN OKLAHOMA. TEMPS WILL HOVER AT OR JUST ABOVE FREEZING. A SPECIAL WEATHER STATEMENT WILL BE ISSUED TO HIGHLIGHT AREAS THAT COULD SEE VERY LIGHT FREEZING PRECIP. NOT OUT OF THE QUESTION ONE MAY BE NEEDED LATE TONIGHT AND EARLY MONDAY ACROSS PORTIONS OF WESTERN NORTH TEXAS AND SOUTHERN OKLAHOMA WHERE FREEZING DRIZZLE OR VERY LIGHT FREEZING RAIN SHOWERS MAY DEVELOP. ADDITIONAL IMPACTS FROM ANY LIGHT PRECIP IS CURRENTLY EXPECTED TO BE SHORT IN DURATION AND NOT EXPECTED TO ADD MUCH TO REFREEZING ISSUE. ALL SHORT TERM GUIDANCE NOT VERY AGGRESSIVE WITH ANY DENSE FOG/FREEZING FOG ISSUES BUT WE WILL GO AHEAD AND MENTION FOG IN THE FORECAST. TURN OVER TO NON-FREEZING/FROZEN PRECIP LATE TOMORROW MORNING FOR A WHILE.
458 AM EST MON MAR 2 2015 HIGH PRESSURE WILL BUILD INTO THE AREA TODAY AND MOVE OFF TO THE EAST TONIGHT. A WARM FRONT WILL LIFT ACROSS THE REGION TUESDAY MORNING WHICH WILL BE FOLLOWED BY A STRONG COLD FRONT TUESDAY AFTERNOON AND EVENING.
THE RAIN CHANCE WILL CONTINUE TO TAPER DOWN AS THE COLD FRONT SETTLES SOUTH AND EAST OF THE AREA THIS MORNING. TEMPS ARE AROUND FREEZING ALONG THE NORTH TIER. BUT NO MEASURABLE PRECIP IS FALLING IN THE FREEZING TEMPS. THE FRONT WILL RETURN NORTHWARD AS A WARM FRONT TONIGHT INTO TUESDAY. A LOW PRESSURE SYSTEM WILL MOVE FROM THE MID MS VALLEY INTO THE GREAT LAKES REGION AS A TRAILING COLD FRONT SWEEPS INTO MID TN.
340 AM EST MON MAR 2 2015 LOW PRESSURE SOUTH OF NOVA SCOTIA WILL RAPIDLY MOVE OFF TO THE NORTHEAST TODAY. AN ARCTIC COLD FRONT WILL CROSS THE AREA THIS EVENING. HIGH PRESSURE WILL BUILD TOWARD THE AREA TONIGHT AND TUESDAY FROM THE WEST.
300 AM EST MON MAR 2 2015 HIGH PRESSURE WILL SLOWLY BUILD INTO THE REGION TODAY.
1226 AM EST MON MAR 2 2015 HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTH MONDAY PUSHING A COLD FRONTAL BOUNDARY THROUGH THE AREA.
310 AM EST MON MAR 2 2015 BREEZY BUT RELATIVELY MILD WEATHER EXPECTED TODAY AS LOW PRESSURE TRACKS NORTHEAST ACROSS THE MARITIME PROVINCES. HIGH PRESSURE BUILDS IN FROM THE WEST TONIGHT AND SHIFTS OFFSHORE BY TUESDAY AFTERNOON. LOW PRESSURE WILL SWING THROUGH SOUTHERN CANADA TUESDAY NIGHT PUSHING A WARM FRONT NORTH ACROSS THE REGION. AS THE LOW SHIFTS TO OUR NORTH.
A STRONG RIDGING UPPER JET WILL INTENSIFY ACROSS THE UPPER MIDWEST TODAY, INTENSIFYING THE SOUTHWEST FLOW ALOFT ACROSS THE SOUTHERN ROCKIES INTO THE HIGH PLAINS. OVERCAST SKIES WILL LIKELY IMPEDE INSOLATION, KEEPING TEMPERATURES FROM CLIMBING MUCH ABOVE THE FREEZING POINT ON THE LOWER PLAINS OF CENTRAL KANSAS HOWEVER, WARMER TEMPERATURES INTO THE 40S MAY BE POSSIBLE IN THE FAR SOUTHWEST SECTIONS.
Initially thought temperatures would hold above freezing overnight but HOB and MAF are currently sitting at 32. Other areas of southwest Texas have enjoyed plenty of sunshine today with Marfa being lucky enough to warm into the lower 70s. Locations over the north and northeast portions of the CWA will remain below freezing overnight, so freezing fog is included for those areas. Also, the northeast half of the Texas Permian Basin could see some light rain or freezing rain overnight with little if any accumulation expected. So while we might be a little warmer than today, we have opted to go on the low end of temperature guidance.
STRATO CU ASSOC WITH 500 MB TROUGH MOVING SOUTHEAST THRU CNTRL MN WITH CLEARING IN ERN ND/NW MN. THE MAIN CHALLENGE WILL BE STRONG COLD FRONT MON NIGHT/TUE. LIGHT SNOW CHANCES SHOULD INCREASE WITH MOISTURE GETTING FOCUSED ALONG THE COLD FRONT BY MORNING. STRONG WINDS WILL BE ONGOING BEHIND THE ARCTIC COLD FRONT.
DRY WEATHER WILL PREVAIL THE REMAINDER OF THE WEEK UNDER THE INFLUENCE OF AN UPPER RIDGE AND LOW LEVEL OFFSHORE FLOW. FOLLOWED BY UPPER LEVEL RIDGING BUILDING OVER THE EASTERN PACIFIC.
1240 AM EST MON MAR 2 2015 A WEAK COLD FRONT WILL PUSH THROUGH EARLY.
THE RAIN SHOULD BECOME MORE FOCUSED ACROSS EXTREME NORTH ALABAMA AFTER MIDNIGHT AS A COLD FRONT APPROACHES THE AREA. THE LOW CIGS WILL CAUSE RESTRICTIONS TO VIS AS WELL.
SOME FREEZING DRIZZLE LOOKS POSSIBLE AT CLARKSVILLE'S OUTLAW FIELD POOR FLYING WEATHER TO CONTINUE OVERNIGHT INTO MONDAY MORNING WITH CEILINGS GOING MVFR AROUND 18Z MONDAY.
HIGH CLOUDS ARE ON THE INCREASE THIS EVENING AHEAD OF A SHORT WAVE TROUGH THAT/S TRACKING SOUTH ALONG THE BC COAST. BESIDES THE HIGH CLOUDS WILL SEE LIGHT WINDS AND SEASONABLY COLD TEMPERATURES FOR TONIGHT. WINDS INCREASING MONDAY AFTERNOON AHEAD OF A COLD FRONTAL PASSAGE ON TUESDAY MORNING. SNOW SHOWERS EXPECTED IN THE HIGHER TERRAIN MONDAY NIGHT THROUGH TUESDAY MORNING. A COLD FRONT EMBEDDED IN THIS FLOW IS MOVING THROUGH BRITISH COLUMBIA THIS AFTERNOON AND WILL REACH OUR AREA LATE MONDAY AFTERNOON FROM THE NORTH. PRECIPITATION WITH THIS SYSTEM WILL MAINLY BE FOCUSED OVER THE HIGHER TERRAIN.
The mix of freezing rain, sleet and snow should continue its northeastward track, with little to no additional winter weather expected across the CWA for the rest of today. High pressure will nose south into the region tonight, with light northeast winds becoming easterly and then southeasterly with time. Lows tonight will range from the low 20s over southern Missouri to the upper teens across the U. Despite tomorrow's above freezing temperatures, suspect there will still be a decent amount of snow in place in many locations Monday evening, and as higher dewpoint air moves into the region, fog formation looks to be a decent bet. Most spots will make it into the low 50s Tuesday. Lingering precipitation associated with the cold front may end as a bit of light snow Tuesday night.
SHORT WAVE TROUGH NOW MOVING RAPIDLY DOWN THE COAST BUT SOME OF THE ENERGY WILL COME THROUGH THE INTERIOR NORTHWEST LATER TODAY AND TONIGHT. AT 00Z THIS AFTERNOON THE ASSOCIATED SURFACE COLD FRONT WILL EXTEND FROM NEAR MCCALL/ID THROUGH SRN HARNEY COUNTY/OR.
A COLD UPPER LEVEL LOW PRESSURE SYSTEM CENTERED OFF OF POINT CONCEPTION WILL SLOWLY MOVE SOUTHEAST TONIGHT.
SKIES WILL BE CLEARING MONDAY NIGHT AS HIGH PRESSURE BUILDS BACK IN. SNOW LEVELS WILL RUN BETWEEN 1200 AND 3500 FEET MONDAY EVENING, THEN DROP TO THE LOWEST ELEVATIONS OVERNIGHT.
IN RESPONSE TO WEAK PRESSURE RISES AHEAD OF SFC RIDGING OVER THE CNTRL PLAINS/MID MS VALLEY. WHERE THE HIGHER MVFR CIGS ARE THIS EVENING OVER THE RED RIVER COUNTIES OF EXTREME NE TX INTO ADJACENT SW AR N OF TXK. WITH THE SRN ZONES LOWERED A COUPLE DEGREES AS THEY HAD FALLEN COOLER THAN THEIR PREVIOUSLY FORECAST MINS. IS FOR WARMER AND WETTER DAY ON TUESDAY WITH SHWRS/TSTMS AHEAD OF ANOTHER COLD FRONT BY WED AM.