Aikyam-Lab/Synoptic-Bench huggingface dataset:
302 PM EDT FRI MAR 27 2015 BANDS OF SHOWERS AND THUNDERSTORMS HAVE EXPANDED OVER THE COASTAL WATERS IN RESPONSE TO LARGE SCALE ASCENT FROM AN UPPER LEVEL TROUGH. SURFACE COLD FRONT IN BIG BEND AREA OF FLORIDA WITH TEMPERATURES RANGING FROM THE LOWER 60S IN THE PAN HANDLE TO NEAR 90 IN MIAMI. AN UPPER-LEVEL TROUGH EXTENDING OVER THE EASTERN U.
636 PM EDT FRI MAR 27 2015 ARCTIC HIGH PRESSURE WILL DROP SLOWLY SOUTHEAST ACROSS THE WESTERN GREAT LAKES TONIGHT REACHING THE OHIO RIVER VALLEY SATURDAY NIGHT.
WITH MORE OF A NORTHEAST LIGHT WIND OCCURRING AT KCDS DUE TO THE PRESENCE OF A WEAK COLD FRONT. ANOTHER WEAK COLD FRONT WILL AFFECT ALL THREE TAF SITES SATURDAY MORNING THUS VEERING WINDS TO THE NORTHWEST. /ISSUED 250 AM CDT FRI MAR 27 2015/ THE REGION WILL REMAIN SANDWICHED BETWEEN EASTERN TROUGHING AND WESTERN RIDGING. WITH NORTHERLY FLOW ALOFT BACKING NORTHWESTERLY AS THE RIDGE LOOSES AMPLITUDE THROUGH EARLY SATURDAY. THOUGH A WEAK BACKDOOR COLD FRONT WILL SWING THE WINDS AROUND TO AN EASTERLY PERSUASION OFF THE CAPROCK THIS MORNING. A LOW AMPLITUDE RIDGE WILL SET UP ACROSS NW MX AND THE DESERT SW WITH A COUPLE OF DISTURBANCES TRAVERSING THE W-NW FLOW ALOFT STRETCHING FROM THE WEST COAST INTO THE HIGH PLAINS.
UPPER HIGH PRESSURE OVER COLORADO WILL START TO WEAKEN SLIGHTLY BUT STILL REMAIN STRONG. A SPOTTY RAIN OR SNOW SHOWER WILL BE POSSIBLE OVER THE HIGHER TERRAIN DURING THE EARLY EVENING HOURS. UPPER HIGH PRESSURE OVER COLORADO WILL CONTINUE TO WEAKEN SLIGHTLY BUT STILL REMAIN STRONG ENOUGH TO WARD OFF ANY SIGNIFICANT WEATHER. THERE COULD BE A SPOTTY RAIN OR SNOW SHOWER OVER THE HIGHER TERRAIN DUE TO AFTERNOON INSTABILITY. SENDING A COLD FRONT THROUGH THE I-25 CORRIDOR AND SOUTHEAST PLAINS OVERNIGHT.
SLY WINDS OVERNIGHT WILL SWING NW-NE SAT MORNING BEHIND A WEAK TROUGH. /ISSUED 337 PM CDT FRI MAR 27 2015/ THE SYNOPTIC PATTERN LATE THIS AFTN WAS COMPRISED OF UA TROUGHING ACROSS THE MID-WEST. AMPLIFIED UA RIDGING ACROSS THE WRN CONUS AND THUS NORTHWESTERLY FLOW ALOFT DOMINATING ACROSS THE SOUTHERN PLAINS. DESPITE THE PRESENCE OF THE COLD FRONT TEMPS MANAGED TO STILL WARM INTO THE 60S AND 70S. OVERNIGHT LOWS WILL BE MILDER THAN RECENT NIGHTS /UPPER 30S ACROSS THE SW TX PANHANDLE TO THE UPPER 40S ACROSS THE LOW ROLLING PLAINS/. EXPECT THIS WIND SHIFT TO HAVE LITTLE RESULTING IN HIGHS IN THE 80S /OR SOME 6-12 DEGREES WARMER THAN TODAY/.
WITH A STRENGTHENING UPPER TROPOSPHERIC TROUGH AXIS OVER THE SOUTHWESTERN CONUS. A TROUGH EXTENDS FROM THE UPPER MISSISSIPPI VALLEY INTO THE CENTRAL PLAINS. OPERATIONAL GFS AND EC ALL SUGGEST THE SOUTHWESTERN CONUS UPPER TROPOSPHERIC TROUGH AXIS WILL CONTINUE TO STRENGTHEN. THE TROUGH CURRENTLY CLEARING OUR AREA SHOULD CONTINUE MOVING SOUTHEAST THROUGH THE NEXT 24 HOURS. SHOULD PROMOTE A WARMER DAY TODAY WHEN COMPARED TO YESTERDAY. INCREASING CLOUD COVER SHOULD HELP KEEP US A TOUCH WARMER TONIGHT WHEN COMPARED TO EARLY THIS MORNING AND AS A RESULT.
341 AM EST SUN MAR 1 2015 DRY WEATHER CONTINUES TONIGHT WITH HIGH PRESSURE OVER THE AREA. CLOUDS WILL BE ON THE INCREASE SUNDAY AS A WARM FRONT APPROACHES THE REGION. HIGH PRESSURE OVER THE REGION WILL ALLOW FOR CLEAR SKIES TO DOMINATE MUCH OF THE NIGHT.
MOIST SOUTHWEST FLOW ALOFT RIDING OVER THE COOLER AIRMASS NORTHWEST OF THE FRONT TO ALLOW FOR WIDESPREAD RAINFALL THROUGH MONDAY.
A STRONG NW FLOW UPPER LEVEL TROUGH WILL MERGE WITH THE EJECTING SW CONUS UPPER LEVEL TROUGH. WILL SUPPORT A WARMER DAY MONDAY WITH CONTINUED DRY CONDS. SLIGHTLY WARMER. STRONG NW FLOW UPPER TROUGH AND THE EJECTING SW CONUS UPPER LOW WILL SUPPORT INCREASING LARGE SCALE ASCENT ACROSS THE SOUTHERN HALF OF THE FA MONDAY EVENING WITH INCREASING MOISTURE AND FORCING SUPPORTING INCREASING CHANCES FOR SNOW. BETTER CHANCES WILL ARRIVE LATER MONDAY NIGHT AS A STRONG COLD FRONT IS FORCED THROUGH THE FA.
1245 AM EST SUN MAR 1 2015 CANADIAN HIGH PRESSURE WILL WEDGE INTO THE AREA FROM THE NORTH THROUGH SUNDAY NIGHT. MOISTURE WILL INCREASE AHEAD OF AN APPROACHING COLD FRONT WHICH WILL CROSS THE AREA MONDAY.
Models are in good agreement that snow will exit the area by this evening as high pressure builds into the region from the northern Plains. High pressure will remain over the area most of the day on Monday before finally shifting east in the afternoon.
SOUTHEASTERN SITES MAY SEE AREAS OF FREEZING DRIZZLE THROUGH THE NIGHT AND INTO THE MORNING. AREAS OF FREEZING DRIZZLE WILL CONTINUE OVERNIGHT INTO THE MORNING FOR SOUTHEAST PORTIONS OF THE CWA. /ISSUED 324 PM CST SAT FEB 28 2015/ WE WILL CONTINUE THE WINTER WEATHER ADVISORY THROUGH TONIGHT WITH AREAS OF FREEZING DRIZZLE/FOG AND SCATTERED LIGHT FREEZING RAIN SHOWERS.
THESE READINGS ARE A BIT WARMER THAN FORECAST, AND WITH WARM AIR ADVECTION BEGINNING TO TAKE PLACE AND EXPECTED CLOUD COVER, HAVE RAISED MIN TEMPS A FEW DEGREES, MAINLY IN OUR WESTERN COUNTIES. THESE SHOULD ARRIVE SOON, ALTHOUGH THE LOWER CLOUDS PRODUCING DZ/-RA ARE LOCATED OVER SRN GA AND THE FL PANHANDLE. AN UPPER LEVEL DISTURBANCE AND APPROACHING COLD FRONT WILL PRODUCE AREAS OF -RA SUNDAY EVENING WITH FLIGHT CONDITIONS DETERIORATING INTO THE LIFR CATEGORY AT TIMES.
TEMPS ACROSS MCCURTAIN AND RED RIVER COUNTIES REMAIN NEAR FREEZING AS OF 03Z.
MADE NO CHANGES TO THE ADVISORY AREA AT THIS TIME AS INTERMITTENT LIGHT FREEZING RAIN IS STILL EXPECTED. GIVEN THE LIGHT NATURE OF THE FREEZING RAIN. TEMPERATURES ARE STILL EXPECTED TO WARM ABOVE FREEZING FROM SOUTH TO NORTH BRINGING AN END TO THE THREAT BY 10AM SUNDAY MORNING.
A WEAK OR DEVELOPING WARM FRONT EXTENDED NE FROM THE LOW AND LOW CIGS/FOG FORMED JUST NORTH OF THE WARM FRONT.
A WEAK COLD FRONT WILL PUSH IN LATE IN THE PERIOD.
RADAR SUGGESTS POSSIBLY STILL A COUPLE FLURRIES OUT OVER THE PRAIRIE COTEAU WHERE SURFACE COLD FRONT IS CURRENTLY LOCATED. AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL TRACK ACROSS THE NORTHERN PLAINS ON SUNDAY. HIGH PRESSURE WILL QUICKLY PASS THROUGH THE REGION SUNDAY NIGHT INTO MONDAY MORNING. IS SUGGESTING LOW CLOUDS WILL IMPACT THE REGION WITH DRIZZLE/FREEZING DRIZZLE POSSIBLE. ARE LESS PESSIMISTIC WITH THE LOW CLOUDS.
INTERMITTENT VERY LIGHT SNOW OR FLURRIES IS EXPECTED TO CONTINUE DURING THE DAY AS THE UPPER TROUGH CURRENTLY OVER MT MOVES TO THE UPPER MS RIVER VALLEY BY 00Z MON. THE UPPER TROUGH WILL AID IN DRIVING A COLD FRONT ACROSS SRN WI THIS EVENING. CLOUDS WILL GRADUALLY INCREASE THROUGH THE AFTERNOON AS LOW PRESSURE APPROACHES FROM THE PLAINS.
WATER VAPOR LOOP INDICATED A SHORT WAVE OVER SOUTHERN SASK WITH AN UPPER LEVEL JET ON THE WEST SIDE OF THE TROUGH. UPPER LEVEL TROUGH WILL MOVE ACROSS THE AREA SUN AND PRODUCE VERY LIGHT SNOW OR FLURRIES.
LIGHT FREEZING DRIZZLE CONTINUES IN MOST OF THESE AREAS AND THE ADVECTION PATTERN ASSOCIATED WITH IT IS FORECAST TO MAINTAIN UNTIL A FEW HOURS AFTER SUNRISE.
354 AM CST SUN MAR 1 2015 THE MAIN FOCUS THROUGH TONIGHT IS ON A WEAK COLD FRONT MOVING THROUGH THE REGION WHICH WILL CONTINUE TO BRING SOME FLURRIES ALONG WITH IT. ZONAL TO SOUTHWEST FLOW HAS SET UP ALOFT WITH A CUTOFF LOW OVER CENTRAL CALIFORNIA AND A POSITIVELY TILTED TROUGH DIVING SOUTHEAST ACROSS CENTRAL CANADA. A WEAK COLD FRONT EXTENDS SOUTH FROM WESTERN ONTARIO DOWN THROUGH WESTERN MINNESOTA. EXPECT THAT THESE FLURRIES WILL DIMINISH AS THE DAY PROCEEDS AND DRIER AIR MOVES IN WITH THE WEAK COLD FRONT. AHEAD OF THE COLD FRONT. SOME WARMER AIR WILL BE ADVECTED UP INTO THE REGION WITH SOUTHWESTERLY SURFACE/LOW LEVEL WINDS WHICH WILL HELP HIGHS TO GET INTO THE 20S BY THIS AFTERNOON.
Sunday will be a transition day between weather systems with mostly clear to partly cloudy conditions and somewhat warmer temperatures. Monday will see an abrupt change back to cold temperatures and widespread snow for the northern half of my forecast area as a Canadian cold front sweeps southward through the state. Southwest Montana will remain ahead of the front so temperatures will be warmer, possibly reaching into the mid to upper 30s, and there will only be a chance for a few snow showers.
UPPER RIDGE OVER THE REGION TONIGHT WITH CLEAR SKIES AND COLD TEMPERATURES. RIDGE WILL BRING MOSTLY SUNNY SKIES SUNDAY WITH HIGHS MAINLY IN THE 40S.
AHEAD OF THE TROUGH WIDESPREAD CLOUD COVER AND LIGHT SNOW HAS DEVELOPED. RETURN FLOW WILL KICK IN LATE TONIGHT AND BRING WARMER TEMPERATURE INTO THE REGION MONDAY.
WHILE ANOTHER COLD FRONT EXTENDS OUT OF CANADA AND ACROSS FAR NORTHWEST NORTH DAKOTA AND INTO MONTANA.
WIDESPREAD IFR TO LIFR CONDITIONS ARE EXPECTED THROUGH SUNDAY MORNING ALONG WITH AREAS OF FREEZING DRIZZLE OR LIGHT FREEZING RAIN. FREEZING RAIN IS BECOMING MORE OF AN ISSUE WITH AREAS OF FREEZING RAIN AND SLEET ACROSS SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. A SOUTHWESTERLY LOW LEVEL JET OF AROUND 60 MPH CONTINUES TO CREATE ISENTROPIC LIFT ACROSS THE REGION THIS EVENING PRODUCING THE AREAS OF FREEZING RAIN AND SLEET. WILL SEE MAINLY FREEZING DRIZZLE ACROSS THE REMAINDER OF NORTHEAST OKLAHOMA. THE TEMPERATURE HAS RISEN TO FREEZING OR JUST ABOVE ACROSS FAR SOUTHEAST OKLAHOMA.
334 AM EST SUN MAR 1 2015 A LOW PRESSURE SYSTEM WILL MOVE FROM THE OHIO VALLEY THIS MORNING. OPEN WV WITH A NARROW SFC TROF PUSHING THRU THE REGION TODAY. AHD OF THE NARROW SFC TROF LATE THIS AFTN AND EVE. DRIER AIR FILTERS IN BHD THE SFC TROF LTR THIS EVENING AND OVERNGT BRINGING A GRADUAL TAPERING OFF OF THE PCPN. IT/S DOUBTFUL THAT TEMPS AT THE SFC WILL RISE ABV FREEZING.
WILL CARRY A CHANCE OF LIGHT SNOW OR LIGHT FREEZING DRIZZLE TONIGHT INTO SUNDAY AM.
345 AM CST SUN MAR 1 2015 AREAS OF FREEZING RAIN HAVE BEEN ONGOING THIS MORNING. AREAL COVERAGE OF FREEZING RAIN WILL DIMINISH. WITH PATCHY FREEZING DRIZZLE BECOMING THE MAIN PRECIP TYPE FOR THOSE AREAS THAT WILL BE BELOW FREEZING FOR MOST OF THE MORNING HOURS. BUT WILL NOT INCLUDE CHOCTAW COUNTY AS OBSERVED TEMPERATURES ARE ABOVE FREEZING. WITH ALL AREAS EXPECTED TO SEE AFTERNOON TEMPERATURES ABOVE FREEZING. PUSH OF COOLER AIR TO MOVE IN FROM THE NORTH TONIGHT. THE WARMER TEMPERATURES IN THOSE LOCATIONS OVERNIGHT WILL LIKELY LIMIT FREEZING PRECIP CHANCES.
1038 PM MST SAT FEB 28 2015 CURRENT THINKING IS FOR THE AREA OF LIGHT SNOW THAT OCCURRED THIS MORNING (PER 850-700MB RH AND BETTER DENDRITIC LAYER TEMPS NEAR THE SFC) WILL CONTINUE TO MOVE EAST AND OUT OF THE AREA BY 00Z SUNDAY AS SLIGHTLY DRIER AIR IN THE LOW LEVELS (AND CONSIDERABLY DRIER AIR IN THE MID LEVELS). HIGHS SUNDAY ABOUT 6-9F WARMER AT 850MB SUPPORTING MOS/BIAS CORRECTED GRID MAXES IN THE MID 20S TO AROUND 30 IN FAR EASTERN COLORADO. IF THE LATTER TURNS OUT TO BE TRUE TEMPS OUT THERE COULD BE A FEW DEGREES WARMER. ALTHOUGH A WEAK 500 MB RIDGE WILL DEVELOP OVER THE HIGH PLAINS EARLY IN THE PERIOD AS A WEST COAST TROUGH DEEPENS OFF SOUTHERN CALIFORNIA. A SERIES OF WEAK SHORT WAVE TROUGHS WILL MOVE ACROSS THE AREA.
THE THERMODYNAMIC PROFILES WERE NOT SEEN AS STRONGLY SUPPORTIVE FOR FREEZING DRIZZLE AS WELL, IN LACKING A SHEAR LAYER ABOVE OR NEAR THE TOP OF THE SATURATED LAYER. AS A RESULT, THE REST OF THE MORNING WILL LIKELY BE COLD AND CLOUDY WITH STRATUS REMAINING OVER MUCH OF THE AREA, WITH POSSIBLY SOME AREAS OF FREEZING FOG DEVELOPING MAINLY FARTHER SOUTH ACROSS THE STATE LINE WHERE DEW POINT DEPRESSIONS HAVE BEEN THE SMALLEST. WITH NO SIGNIFICANT AIRMASS CHANGE, THE LOWS SUNDAY NIGHT SHOULD BE SIMILAR, IN THE UPPER TEENS TO LOWER 20S. TEMPERATURES WILL INCREASE TO ABOVE FREEZING MONDAY INTO MONDAY NIGHT LEADING TO LIGHT RAIN OR DRIZZLE TO FALL IN SOME LOCATIONS.
A LITTLE INCREASE IN MID LEVEL FRONTAL FORCING WILL OCCUR THROUGH THE SOUTHERN CWA AS NORTHERN STREAM TROUGH WANDERS THROUGH THE AREA. PERHAPS COULD GET A COUPLE OF FLURRIES THROUGH THE LOWER MISSOURI VALLEY. AM HESITANT TO EXPECT TEMPS TO BE ALL THAT MUCH COOLER THAN TODAY. SUNDAY NIGHT WILL SEE HIGH PRESSURE MOVE THROUGH WITH SOUTHEAST FLOW DEVELOPING.
Strong cyclonic flow will continue over the Srn portion of our CWA as upper low center continues off the Santa Barbara coast through Sun. This low will be centered further west and out over the ocean than this current low pressure area. While it looks weaker at this time we will have to monitor its progression since there could be that possibility that some additional moisture could get sucked into the low and alter the current forecast.
A DEEP SLOW-MOVING TROUGH OVER THE WEST COAST WILL BRING SCATTERED SHOWERS.
TEMPERATURES ACROSS THE NORTHLAND WERE IN THE LOW TO MIDDLE 20S. THERE WAS AN APPROACHING TROUGH IN THE EASTERN DAKOTAS AND FAR NW MINNESOTA. THE CLOUDY SKIES AHEAD OF AND NEAR THE TROUGH WERE BEGINNING TO SPREAD INTO THE FAR WESTERN FORECAST AREA. THE TROUGH IN THE NORTHERN PLAINS WILL MOVE THROUGH THE NORTHLAND TONIGHT AND SUNDAY MORNING. THIS TROUGH WILL BRING A PERIOD OF CLOUDY SKIES AND THE POTENTIAL FOR VERY LIGHT SNOWFALL. THE CLOUD COVER WILL BOLSTER THE TEMPERATURES AND KEEP THE LOW TEMPERATURES ABOVE ZERO. THERE WILL LIKELY BE A PERIOD OF PARTIAL CLEARING SUNDAY MORNING IN THE WAKE OF THE PASSING TROUGH. AN UPPER LEVEL TROUGH WILL MOVE THROUGH THE REGION DURING THE MIDDLE OF THE DAY AND COOL WNW FLOW WILL DEVELOP ACROSS THE NORTHLAND.
SOUTHERLY FLOW AHEAD OF A WEAK COLD FRONT IS BRINGING INCREASED MOISTURE TO THE AREA. THEN THE COLD FRONT WILL PUSH THROUGH TONIGHT. ENOUGH COLDER AIR MAY PUSH IN LATE IN AND NEAR WISE COUNTY VA FOR A BIT OF LIGHT FREEZING RAIN OR DRIZZLE LATE TONIGHT.
FOR 06Z AVIATION FORECAST INVERTED TROUGH EXTENDING FROM NORTHERN MISSISSIPI UP THROUGH MIDDLE TENNESSEE WITH LOW CEILINGS DEVELOPING AND LOWERING VISIBILITIES WILL LEAD TO POOR FLYING WEATHER AS WE GO THROUGH THE NEXT 24 HOURS.
1116 PM CST SAT FEB 28 2015 AN UPPER LEVEL DISTURBANCE WILL CONTINUE TO PASS THROUGH THE REGION BRINGING FREEZING RAIN TO THE NORTHERN TERMINALS AND RAIN TO THE CENTRAL AND SOUTHERN TAF SITES. AND EVEN BATESVILLE HAVE BEEN SLOW TO RISE THIS EVENING AND ARE STILL SITTING AT OR BELOW THE FREEZING MARK AS OF 7 PM. SURFACE OBSERVATIONS AS WELL AS REPORTS FROM SOCIAL MEDIA CONFIRM THAT SOME LIGHT FREEZING RAIN IS OCCURRING IN THOSE AREAS. AND SCOTT COUNTIES ARE ALSO STILL EXPERIENCING SOME LIGHT FREEZING RAIN.
THIS EVENING THROUGH SUNDAY NIGHT UPPER TROUGH STRETCHES ACROSS THE CENTRAL AND WESTERN STATES. NORTHERNMOST WAVE WITHIN THE TROUGH IS PUSHING THROUGH MT. TEMPS HAVE RISEN INTO THE LOWER 30S ACROSS SOUTH CENTRAL SD. UPPER WAVE WILL QUICKLY SWEEP THROUGH THE NORTHERN PLAINS TONIGHT AS CLOSED LOW CONTINUES TO SPIN OVER THE SOUTHWEST US.
PROVIDING US WITH CHANCES FOR LIGHT PRECIPITATION AS WE SEE SUBTLE DEFORMATION/CONVERGENCE IN THE LOWER-MID TROPOSPHERE ALONG THE BAROCLINIC ZONE. TEMPERATURES WILL INCREASE TO ABOVE FREEZING MONDAY INTO MONDAY NIGHT LEADING TO LIGHT RAIN OR DRIZZLE TO FALL IN SOME LOCATIONS.
STILL THINKING IFR AND EVENTUALLY LIFR CIGS AND FG ARE LIKELY FOR ALL TERMINALS GIVEN THE HIGH AMOUNTS OF LOW LEVEL MOISTURE IN THE ATMOSPHERE OVERNIGHT TONIGHT. UPPER AIR ANALYSIS THIS MORNING SHOWED AN EAST WEST ORIENTED TROUGH OVER THE NORTHWEST STATES WITH NEARLY ZONAL FLOW ACROSS THE SOUTHERN HALF OF THE COUNTRY. IN THE LOW LEVELS. DURING THIS PERIOD THE TROUGH IN THE WEST WILL SWING DOWN ALONG THE WEST COAST AND THIS WILL TURN THE FLOW OVER TEXAS TO THE SOUTHWEST.
CLOUDS HAVE OVERSPREAD CENTRAL ALABAMA THIS EVENING AS LOW LEVEL SOUTHEAST FLOW INCREASES AND ADVECTS IN A WARMER AND AN INCREASING MOIST AIR MASS.
A SHORT WAVE TROUGH WAS PRODUCING SNOW ACROSS MISSOURI AND CENTRAL ILLINOIS. MEANWHILE FURTHER TO THE NORTHWEST A COLD FRONT WAS LOCATED ACROSS THE EASTERN DAKOTAS. A SHORT WAVE RIDGE HAS KEPT SKIES MOSTLY SUNNY TO PARTLY CLOUDY THIS AFTERNOON.
A COUPLE S/W TROFS AND JET STREAKS WERE SPLITTING AROUND THE FORECAST AREA EARLY THIS MORNING. A COLD FRONT OVER MN WILL MOVE ACROSS THE FORECAST AREA THIS AFTERNOON AND EARLY EVG. AND A STRONGER S/W TROF OVER NE MONTANA WILL ARRIVE LATE IN THE DAY. STRONG SUBSIDENCE AND APPROACHING HIGH PRESSURE WILL BRING CLEARING SKIES TONIGHT.
EAST FLOW AROUND THE RETREATING RIDGE WILL BRING MID 50S DEWPOINT AIR OVER LOWER 50S COASTAL WATERS.
/ISSUED 838 PM CST SAT FEB 28 2015/ ADDED AREAS OF FREEZING FOG TO THE OKLAHOMA AND TEXAS PANHANDLES FOR TONIGHT THROUGH 10AM. SOME LIGHT FREEZING DRIZZLE WILL BE POSSIBLE WITH THE BEST CHANCE AT GUY SO HAVE RETAINED THE MENTION THERE. WILL WATCH THE TRENDS AND SEE IF FREEZING DRIZZLE WILL NEED TO BE MENTIONED AT DHT AND AMA. /ISSUED 429 PM CST SAT FEB 28 2015/ THE NEXT TO LAST IN A SERIES OF STORMS SYSTEMS SLATED TO IMPACT THE TX AND OK PNHDLS WEATHER IS A CLOSED LOW OFF THE SRN CA COAST.
1111 PM CST SAT FEB 28 2015 MAIN FEATURES ACROSS THE CONUS TODAY ARE A DEEP UPPER LEVEL TROUGH DIGGING ACROSS CALIFORNIA RESULTING IN SOUTHWEST FLOW ACROSS THE SOUTHERN CONUS. MORE SUN FOR THE NORTH AND TEMPS INTO THE LOWER 30S. GUIDANCE IS NEAR TO SLIGHTLY WARMER THAN TODAY AND FORECAST FOLLOWS THE SLIGHT WARM UP. UPPER TROUGH OFF THE SOUTHERN CALIFORNIA SUNDAY EVENING. MAIN PRECIPITATION SHIELD TO THE NORTH ALONG THE COLD FRONT.
MAINLY NEAR THE HIGHWAY 50 CORRIDOR. THE MAIN HAZARD FOR THIS MORNING WILL BE AREAS OF DENSE FREEZING FOG AND PATCHY FREEZING DRIZZLE OVER SOUTH CENTRAL AND SOUTHEAST KANSAS.
HIGH PRESSURE WILL BUILD SOUTHEAST ALONG THE MISSOURI VALLEY TONIGHT. DECREASING CLOUDS AND COLDER TEMPS WILL ACCOMPANY THE HIGH.
HOWEVER, SOME ISENTROPIC LIFT/WEAK TROUGH WILL STILL PRODUCE SOME SHOWERS, ALONG THE WEST COAST BY THIS AFTERNOON.
SKIES ARE MOSTLY CLEAR TO PARTLY CLOUDY WITH TEMPERATURES IN THE LOWER TO MID 70S ALONG THE ISLAND CHAIN. AN EXTENSIVE AND STRONG RIDGE OF HIGH PRESSURE EXTENDS FROM THE MID ATLANTIC STATES SOUTHWARD INTO THE SOUTHEAST STATES. A WELL PRONOUNCED COASTAL TROUGH IS DRAPED JUST EAST OF THE SUNSHINE STATE.
THIS PSEUDO WARM FRONT CONTINUES TO SLOWLY LIFT NORTH THROUGH KY WITH THE BULK OF THE PRECIP WELL TO THE NORTH ACROSS THE OH RIVER. THE MOISTURE MOVING IN OVERHEAD IS HAVING QUITE A TOUGH TIME SATURATING THE LOWER LEVELS. THERE MAY BE A 1 TO 2 HOUR PERIOD WHERE A HUNDREDTH OR TWO OF FREEZING PRECIP MAY FALL. WINDS SHIFT TO THE SOUTHWEST AT THE SURFACE LATER TODAY ALLOWING WARMER TEMPS INTO THE AREA AS HIGHS TODAY WARM INTO THE UPPER 40S. THE COLD FRONT PUSHES SOUTHEAST SAGS SOUTH OF THE TN BORDER AND COLDER AIR FILTERS IN BEHIND TONIGHT.
308 AM EST SUN MAR 1 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION SUNDAY. LOW PRESSURE WILL CROSS THE REGION SUNDAY NIGHT INTO MONDAY.
A FRONTAL SYSTEM AND UPPER TROUGH WILL BRING SNOW TO OUR REGION TONIGHT AND SUNDAY WITH MIXED PRECIPITATION IN THE SOUTH. HIGH PRESSURE BEHIND THIS SYSTEM WILL MOVE ACROSS OUR AREA MONDAY.
THE LOWERING OF CC AND INCREASE IN ZDR MOVED THROUGH THE BIRMINGHAM AREA AT THE TIME OF THE CHANGEOVER AT THE BIRMINGHAM AIRPORT.
219 AM EST THU FEB 26 2015 LOW PRESSURE WILL MOVE UP THE ATLANTIC COAST TODAY. COLD AND DRY HIGH PRESSURE WILL BUILD INTO THE AREA FOR THE WEEKEND. THIS IS SUPPORTED BY LOCAL METARS THAT NOW INDICATE MAINLY LIGHT RAIN/FREEZING RAIN/DRIZZLE ACROSS THE ENTIRE CWA. TEMPERATURES ACROSS THE SOUTHERN HALF OF THE CWA WILL REMAIN ABOVE FREEZING THIS MORNING. WHILE THE NORTHERN HALF MAY APPROACH FREEZING.
1043 PM MST WED FEB 25 2015 COLD FRONT JUST ENTERING SOUTHWEST NEBRASKA THIS AFTERNOON WILL CONTINUE TO MOVE SOUTHWEST AND CLEAR THE FORECAST AREA BY MIDNIGHT.
WILL CONTINUE IN THE WAKE OF A COLD FRONT MOVING ACROSS THE REGION. VFR CONDITIONS WILL PREVAIL AT ALL TAF SITES IN ADVANCE OF AN APPROACHING COLD FRONT. /ISSUED 401 PM CST WED FEB 25 2015/ FRIGID COLD FRONT SWEEPS SOUTH FROM KANSAS TONIGHT. H500 MB TROUGH OFF THE NORTHERN B.
COLD FRONT WILL SLIDE INTO SOUTH FLORIDA THIS EVENING BUT CONSIDERABLE CLOUDS WILL LINGER.
TEMPO MVFR CIGS ARE EXPECTED INITIALLY BEHIND A STRONG COLD FRONT. THE COLD FRONT IS NOW NEARING THE I44 CORRIDOR LATE THIS EVENING.
THE UPPER LEVEL TROUGH HAS WEAKENED AND HAS MOVED INTO NORTHERN GEORGIA. AND THIS MAY BE A TAD ON THE HIGH SIDE GIVEN THE AMOUNT OF SNOW ON THE GROUND. WITH CLEARING SKIES AND COOLER TEMPERATURES EXPECTED. OVERNIGHT LOWS WILL LIKELY BE IN THE LOW TO MID 20S. HIGH PRESSURE WILL MOVE EAST.
/ISSUED 1018 PM CST WED FEB 25 2015/ THE CLEARING LINE OF THE LOW STRATUS CONTINUES TO MAKE GOOD PROGRESS SE INTO FAR SRN AR AND ERN TX. PARTICULARLY ON BRIDGES AND OVERPASSES AS WELL AS SOME OF THE AREA ROADWAYS. AS AREAS ACROSS DEEP E TX/NCNTRL LA MAY STAY JUST ABOVE FREEZING AS THE LOW STRATUS WILL LIKELY HANG TOUGH OVER THESE AREAS OVERNIGHT.
340 AM CST THU FEB 26 2015 ANOTHER STRONG COLD FRONT PUSHED SOUTH ACROSS THE FORECAST AREA YESTERDAY EVENING.
NE winds will increase in wake of a strong cold front at the terminals before 09Z, especially MAF/HOB/INK/PEQ.
1243 AM EST THU FEB 26 2015 A COLD FRONT WILL EXIT THE COAST EARLY THIS MORNING. LOW PRESSURE WILL SPREAD A FEW CLOUDS INTO THE AREA TODAY AND TONIGHT AS IT TRACKS WELL TO OUR SOUTH.
TEMPERATURES TONIGHT WILL BE A FEW DEGREES WARMER.
231 AM EST THU FEB 26 2015 LOW PRESSURE WILL TRACK WELL TO OUR SOUTH LATER TODAY AND TONIGHT.
UPPER LEVEL TROF WILL CONTINUE TO MOVE OFF TO THE EAST AND ENDING ANY CHANCE FOR PRECIPITATION. A WARMING TRENDS SETS IN THIS WEEKEND AS A LARGE SCALE UPPER LEVEL TROF DIGS INTO THE SOUTHWEST CONUS AND DRAWS A SOUTHERLY FLOW.
Temperatures tonight will fall into the low to mid 20s for most locations, though upper teens are possible across the north. Thursday highs should get back above freezing closer to the TN border, whereas mid to upper 20s will rule southern IN and our northern counties in KY. The warmer temperatures may make for a brief mix of snow/rain showers down south during the day. Then Thursday night we crash again as another cold high pressure builds in from Canada.
As a strong area of low pressure departs the region today, high pressure will build in its wake. Residual low level moisture is expected to keep conditions mostly cloudy through the day with high temperatures ranging from the lower 50s across the northwest to the lower 60s across the southeast big bend.
THE UPPER TROUGH WAS MOVING OUT OF THE AREA AND LAST OF THE SNOW JUST MOVED ACROSS THE STATE LINE. COULD SEE SOME PATCHY FOG IN AREAS WHERE CLOUDS BREAK UP BEFORE THE HIGHER STUFF MOVES THIS WAY.
SATELLITE IMAGERY AND SFC OBSERVATIONS SHOW DECREASING CLOUDS AS ARCTIC HIGH PRESSURE BUILDS INTO THE FA. THE HIGH CENTER WILL CONTINUE SHIFTING SE TONIGHT AS THE 500HPA TROUGH CONTINUES TO DIG. WINDS WILL STEADILY DECREASE IN A WEAKENING PRESSURE GRADIENT AS THE CENTER OF HIGH PRESSURE MOVES OUT OF CANADA. EXPECT HIGH PRESSURE TO REMAIN IN CONTROL THRU FRI NIGHT WITH ANOTHER BOUT OF COLD TEMPERATURES BEFORE MODERATING THIS WEEKEND.
A STRONG COLD FRONT WILL MOVE THROUGH THE AREA BETWEEN 15Z AND 18Z ON THURSDAY.
WENT NEAR THE COOLER MET GUIDANCE. HAVE INCLUDED A SLIGHT CHANCE FOR LIGHT SNOW FAR SOUTHWEST INCLUDING WESTERN DEUEL AND WESTERN CHASE COUNTY AS H7 AND H5 TROUGHS KICK EAST TONIGHT.
SOME LOCATIONS NORTH OF HWY 29 IN NORTHCENTRAL WI ALONG WITH PARTS OF SOUTHEAST MN WILL REACH THE LOWER -20S FOR WIND CHILLS FOR A FEW HOURS BY THU MORNING. THU NIGHT COULD BE A DIFFERENT STORY WHEN IT COMES TO COLD WITH HIGH PRESSURE BUILDING IN FROM THE PLAINS. LONG WAVE WEST COAST TROUGH DEEPENS FOR THE START OF THE NEW WORK WEEK.
217 AM EST THU FEB 26 2015 VERY LIGHT SNOW IS POSSIBLE OVER THE REGION TODAY AS LOW PRESSURE MOVES OFF THE CAROLINA COAST AND THE UPPER JET STREAM FAVORS BROAD BUT WEAK LIFT OVER THE STATE.
1047 PM MST WED FEB 25 2015 AN ACTIVE DAY TODAY AS A COLD FRONT HAS MOVED ACROSS THE STATE AND SOME SNOW HAS BEEN ONGOING. WITH FRESH SNOW COVER MANY AREAS WILL STRUGGLE TO GET ABOVE FREEZING.
COLD HIGH PRESSURE SINKING SOUTHWARD THROUGH THE PLAINS WILL INCREASE THE DEPTH OF THE DENDRITIC GROWTH ZONE AND EXTEND IT INTO THE BOUNDARY LAYER ACROSS FAR SOUTHWEST KANSAS DURING THIS SHORT TERM PERIOD.
A WARMING TRENDS SETS IN THIS WEEKEND AS A LARGE SCALE UPPER LEVEL TROF DIGS INTO THE SOUTHWEST CONUS AND DRAWS A SOUTHERLY FLOW.
424 AM EST THU FEB 26 2015 VERY LIGHT SNOW IS POSSIBLE OVER THE REGION TODAY AS LOW PRESSURE MOVES OFF THE CAROLINA COAST AND THE UPPER JET STREAM FAVORS BROAD BUT WEAK LIFT OVER THE STATE.
340 AM EST THU FEB 26 2015 SOUTHWEST FLOW CONTINUES TO INCREASE ACROSS SOUTH FLORIDA EARLY THIS MORNING AS AN AREA OF LOW PRESSURE ACROSS SOUTHERN GEORGIA PUSHES TO THE NORTHEAST. A TRAILING COLD FRONT EXTENDS TO THE SOUTHEAST AND INTO THE EAST-CENTRAL GULF OF MEXICO WITH A LINE OF THUNDERSTORMS ALONG THE LEADING EDGE. THE AFOREMENTIONED COLD FRONT IS STILL EXPECTED TO PUSH THROUGH SOUTH FLORIDA LATER THIS EVENING WITH SHOWERS AND A FEW THUNDERSTORMS EXPECTED OUT AHEAD OF IT.