Aikyam-Lab/Synoptic-Bench huggingface dataset:
A SATURATED AND WARM AIRMASS PREVAILS TONIGHT DESPITE THE PASSAGE/STALLING OF A WEAK COLD FRONT EARLIER TODAY. THE ONLY SENSIBLE WEATHER IMPACT FROM THIS FRONT APPEARS TO BE SLIGHTLY COOLER TEMPS AND WIND DIRECTION CHANGE. THIS WILL BE ESPECIALLY TRUE OVER THE HIGHER ELEVATIONS OF THE CUMBERLAND PLATEAU (NE AL/S MIDDLE TN). AS A RESULT, WILL ADD PATCHY DENSE FOG OVER NE AL/S MIDDLE TN FOR THAT POSSIBILITY DUE TO THE HIGHER ELEVATIONS THERE.
802 PM EDT WED MAR 11 2015 A COLD FRONT WILL MOVE SOUTH FROM CANADA OVERNIGHT BRINGING A CHANCE OF RAIN AND SNOW SHOWERS TO THE NORTH COUNTRY.
HIGH CLOUDS WILL CONTINUE TO STREAM OVER WESTERN AND CENTRAL NORTH DAKOTA TONIGHT AHEAD OF AN UPPER LEVEL TROUGH OVER THE WESTERN CONUS. THIS TROUGH WILL MOVE THROUGH THE NORTHERN PLANS TONIGHT AND THURSDAY DRAGGING A WEAK AND DRY COLD FRONT INTO THE REGION. THIS WILL BRING JUST SLIGHTLY COOLER TEMPERATURES WEST THURSDAY.
1018 PM EDT WED MAR 11 2015 HIGH PRESSURE WILL BRING FAIR WEATHER TO THE KEYSTONE STATE THROUGH THURSDAY NIGHT.
/ISSUED 259 PM CDT WED MAR 11 2015/ UPPER RIDGE FROM THE SOUTHWESTERN STATES/SOUTHERN ROCKIES ACROSS THE PANHANDLES AND INTO THE CENTRAL PLAINS STATES SQUEEZED BETWEEN TWO UPPER TROUGHS OR CUT OFF LOW.
WITH THE UPPER LOW OVER THE LOWER RIO GRAND VALLEY. WHILE THE LOW LOOKED RATHER IMPRESSIVE ON IR & VIS SAT IMAGERY EARLIER. THIS LOW WILL CONTINUE TO MOVE N THIS EVENING. SIGNIFICANT IMPROVEMENT IS EXPECTED AS THE MAIN SFC AND UPPER LEVEL LOW SHIFTS EAST ON FRI.
ON THURSDAY THE LOW LEVEL SOUTHEAST FLOW WILL CONTINUE. MILD WEATHER PATTERN CONTINUES AS HIGH PRESSURE OVER THE ATLANTIC WILL BE THE MAIN INFLUENCE OF WEATHER OVER THE WATERS.
AS THE SURFACE/COASTAL TROUGH MOVES NORTHEAST AND DOWNGLILDE OCCURS. BAGGY UPPER LEVEL TROUGH EXTENDS FROM THE SOUTHERN PLAINS STATES SSW TO MEXICO. LOW PRESSURE HAS DEVELOPED OVER THE WESTERN GULF OF MEXICO THIS AFTERNOON. WITH TEMPERATURES RETURNING TO THE LOWER AND MID 70S.
620 PM CDT WED MAR 11 2015 A RIDGE OF HIGH PRESSURE AT THE SURFACE WILL REMAIN OVER THE REGION THROUGH THE PERIOD. /ISSUED 235 PM CDT WED MAR 11 2015/ WARM WEATHER CONTINUES AS A UPPER LOW SITS OVER THE SOUTHERN PLAINS.
1028 PM EDT WED MAR 11 2015 HIGH PRESSURE WILL BUILD INTO THE AREA TOMORROW MORNING AND WILL MAKE FOR A BEAUTIFUL THURSDAY.
OTHER THAN A FEW WISPS OF CIRRUS OUR SKIES WILL BE CLEAR AS HIGH PRESSURE SHIFTS OFF TO THE EAST OVERNIGHT. A WARMER DAY IS IN STORE DUE TO SOUTHEAST WINDS AND PLENTY OF SUNSHINE. AS A CLIPPER SYSTEM DIVES INTO THE DAKOTAS AND HIGH PRESSURE MOVES INTO THE NORTHEAST UNITED STATES.
UPPER TROUGH BROUGHT THE EXPECTED RAIN SHOWERS AND COOLER TEMPS TODAY AND THIS EVENING BUT RAIN AMOUNTS HAVE BEEN GENERALLY LESS THAN FORECAST. AFTER WHICH THE UPPER TROUGH WILL MOVE QUICKLY AWAY AND ANOTHER UPPER RIDGE WILL COME IN FROM THE WEST WITH CLEARING SKIES AND WARMING AGAIN.
THIS EVENING THROUGH THURSDAY NIGHT CURRENT SURFACE ANALYSIS SHOWS SURFACE TROF OVER THE FORECAST AREA. TO THE WEST OF HIGH PRESSURE OVER THE UPPER MIDWEST. UPPER LEVEL ANALYSIS SHOWS RIDGE AXIS OVER THE HIGH PLAINS.
855 PM EDT WED MAR 11 2015 HIGH PRESSURE WILL BUILD INTO THE AREA TOMORROW MORNING AND WILL MAKE FOR A BEAUTIFUL THURSDAY.
AIR TEMPERATURES THIS EVENING ARE PINNED NEAR 77F WITH DEWPOINT TEMPERATURES IN THE LOWER 70S. A HIGH PRESSURE CELL JUST OFFSHORE OF THE SOUTHEASTERN UNITED STATES AND FLORIDA PENINSULA WILL BE REINFORCED BY ANOTHER REGION OF HIGH PRESSURE. THE LOW TEMPERATURE SO FAR TODAY AT KEY WEST INTERNATIONAL AIRPORT IS 77 DEGREES.
IF CIGS DO DEVELOP EXPECT A FASTER RETURN TO MVFR CIGS DUE TO DRIER AIR MIXING IN ON THE W/SW SIDE OF LOW/TROUGH ON THURSDAY AND SHOULD BE BACK TO VFR BETWEEN 17Z-19Z.
913 PM EDT WED MAR 11 2015 HIGH PRESSURE WILL SLOWLY BUILD ACROSS THE AREA TONIGHT AND THURSDAY.
732 PM EDT WED MAR 11 2015 A COLD FRONT WILL MOVE SOUTH FROM CANADA OVERNIGHT BRINGING A CHANCE OF RAIN AND SNOW SHOWERS TO THE NORTH COUNTRY.
Weak upper trough axis was just southeast of Kansas today, with ridging over the Rockies combining to keep skies clear in a rather dry atmosphere. This should still support highs in the lower 70s for most areas, though some retrogression of the southern end of the upper trough axis may bring some thicker high cloud into southeastern locations in the afternoon for slightly cooler conditions. For late this week and the upcoming weekend, the focus early on will be on the impact from the Mexican upper low ejecting northeast across the South Central US.
HIGH PRESSURE AT THE SURFACE. WITH THE HIGH OVER THE REGION. THIS AREA OF HIGH PRESSURE WILL GET SHOVED INTO THE OHIO RIVER VALLEY SATURDAY NIGHT AHEAD OF THE NEXT SYSTEM. A STRONG PACIFIC SHORT WAVE TROUGH IS EXPECTED TO COME ON SHORE TODAY WITH THE SOUTHERN PART OF THE WAVE WORKING EAST ACROSS THE NORTHERN ROCKIES WHILE THE NORTHERN PART OF THE WAVE MOVES INTO CENTRAL CANADA.
CURRENT SKC CONDITIONS BNA/CKV SHOULD TRANSITION TO STRATUS CEILINGS 27/14Z- 27/15Z AS UPPER TROUGH BEGINGS TO MOVE INTO AREA. EXPECT EROSIONS OF CEILINGS AROUND 05/00Z- 05/01Z CKV/BNA AS TROUGH PASSES EWD. SKC CONDITIONS EXPECTED AS RIDGING INFLUENCES BEGIN TO BUILD ACROSS REGION THRU 28/12Z. CEILINGS WILL FLUCTUATE BETWEEN MVFR TO VFR CEILINGS THRU 28/07Z AS CURRENT LOW LEVEL MVFR CEILINGS WILL FLUCTUATE WITH VFR CEILINGS AS CURRENT MOISTURE IS USHERED EWD AND UPPER LEVEL TROUGH MOVEMENT MOISTURE REPLACES IT. UNTIL UPPER LEVEL TROUGH PASSAGE AFTER 28/07Z AND SKIES BECOME SKC. A LARGE RIDGE OF HIGH PRESSURE CURRENTLY STRETCHES FROM THE MN ARROWHEAD SW THROUGH THE CENTRAL PLAINS. THERMAL TROUGHING TO AMPLIFY OVER THE EASTERN U. SUB FREEZING TEMPS LOOK IMMINENT. STRONG THERMAL TROUGHING WILL MAINTAIN ITS GRIP.
NORTH WINDS BEHIND A COLD FRONT WILL BECOME LIGHT AND VARIABLE BY MID TO LATE AFTERNOON. AS A COLD FRONT MOVES INTO NORTHERN AND CENTRAL TEXAS.
/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.
WATER VAPOR LOOP INDICATED UPPER LEVEL RIDGE AXIS OVER WESTERN NORTH AMERICA. UPPER LEVEL RIDGE FORECAST TO MOVE EAST AND FLATTEN ACROSS THE NORTHERN PLAINS BY SAT. UPPER LEVEL TROUGH OVER THE EASTERN PACIFIC WILL MOVE ACROSS THE REGION AND PRODUCE THREAT OF PRECIP FOR SAT NIGHT/SUN MORNING. PRECIPITABLE WATER RISES TO NEARLY AN INCH BY SAT EVENING AS 700 HPA THETA-E RIDGE MOVES OVER THE AREA.
1003 AM EDT FRI MAR 27 2015 HIGH PRESSURE WILL BEGIN TO BUILD IN FROM THE WEST TODAY AND TONIGHT. LOW PRESSURE WILL TRACK WELL SOUTH OF THE GULF OF MAINE ON SATURDAY.
IN THE WAKE OF THE COLD FRONT SKIES HAVE CLEARED. HIGH PRESSURE WILL BUILD IN FROM CENTRAL TEXAS.
QUIET WEATHER PATTERN EXPECTED OVER THE WEEKEND AS HIGH PRESSURE REMAINS IN CONTROL. IN THE WAKE OF THE COLD FRONT SKIES HAVE CLEARED. HIGH PRESSURE WILL BUILD IN FROM CENTRAL TEXAS.
LOCATIONS IN THE EASTERN CWA MAY STRUGGLE TO RISE ABOVE FREEZING.
ALOFT: A HIGHLY AMPLIFIED WRN USA RIDGE/ERN USA TROF WAS IN PLACE WITH NNW OVER THE PLAINS. MORE WESTERLY FLOW ALOFT WILL ALSO STRENGTHEN THE LEE-SIDE TROF. ONCE THIS LOW SLIDES BY THIS EVE. SET UP BETWEEN TROUGHING OVER THE EAST COAST AND ANOTHER DISTURBANCE SLIDING THROUGH THE NRN ROCKIES. A DEEPENING TROUGH OF LOW PRESSURE ALONG THE HIGH PLAINS AND DEPARTING HIGH PRESSURE TO THE EAST WILL BRING INCREASINGLY SOUTHERLY WINDS. MODELS SHOW WARMER TEMPS ALOFT STARTING TO WORK IN FROM THE WEST.
WITH RIDGE AXIS CROSSING SOUTHEASTERN WISCONSIN SATURDAY MORNING. AND MOST AREAS WILL FAIL TO REACH THE FREEZING MARK. WITH RIDGE AXIS OVERHEAD. GUSTY NORTHERLY WINDS WILL SUBSIDE THIS EVENING AS THE HIGH APPROACHES. WITH GUSTS EASING BY EVENING AS HIGH PRESSURE BUILDS INTO THE REGION. EXPECT WINDS AND WAVES TO EASE TONIGHT AS HIGH PRESSURE BUILDS INTO THE AREA. CLEAR SKIES AND LIGHT WINDS AS RIDGE OF HIGH PRESSURE MOVES OVER WILL DROP LOWS INTO THE TEENS EXCEPT FOR RIGHT ALONG THE LAKE WHERE WEAK ONSHORE WIND WILL HOLD TEMPERATURES AROUND 20.
SATELLITE IMAGERY SHOWS A STRONG RIDGE OF HIGH PRESSURE MOVING INTO THE WESTERN STATES. COMPUTER WEATHER MODELS ARE SHOWING THIS RIDGE GRADUALLY WEAKENING THROUGH THE WEEKEND WITH RECORD TEMPERATURE POTENTIAL ACROSS NORTHERN ARIZONA THROUGH SATURDAY.
BEFORE CLOUDS BUILD BACK IN OUT AHEAD OF THE APPROACHING UPPER LEVEL TROUGH. WITH THE EXCEPTION OF THE HIGHEST TERRAIN BORDERING VIRGINIA. WITH A DEEPENING TROUGH AXIS CURRENTLY TAKING SHAPE ACROSS THE CENTRAL CONUS TO MOVE EAST ACROSS THE MISSISSIPPI VALLEY THROUGH TONIGHT. THE TROUGH WILL USHER IN MUCH COLDER AIR ALOFT. CONVECTION WILL DIMINISH INTO THIS EVENING AS THE TROUGH AXIS SHIFTS EAST. HIGH PRESSURE WILL BUILD IN FROM THE GREAT LAKES LATER THIS EVENING. WITH DECREASING CLOUDS AND LOWS GETTING DOWN INTO THE LOW TO MID 20S FOR MOST LOCATIONS.
838 AM EDT FRI MAR 27 2015 A COLD FRONT WILL SLOWLY SHIFT SOUTH THROUGH OUR REGION EARLY THIS MORNING WITH COLDER AIR FILTERING IN BEHIND THE FRONT.
1043 AM EDT FRI MAR 27 2015 A COLD FRONT WILL SLOWLY SHIFT SOUTH THROUGH OUR THIS MORNING WITH COLDER AIR FILTERING IN BEHIND THE FRONT.
1104 AM EDT FRI MAR 27 2015 AN UPPER LEVEL TROUGH WILL SHIFT EAST ACROSS THE REGION THROUGH TONIGHT. A FEW SPRINKLES OR FLURRIES WILL BE POSSIBLE THIS AFTERNOON BEFORE HIGH PRESSURE BUILDS INTO THE AREA FOR SATURDAY.
1039 AM MDT FRI MAR 27 2015 UPDATED AVATION SECTION THE HIGHLY AMPLIFIED RIDGE SHIFTS OVER THE GREAT BASIN TODAY.
STRENGTHENING HIGH PRESSURE ALOFT WILL CONTINUE TO RESULT IN DRY CONDITIONS AND ABOVE NORMAL DAYTIME TEMPERATURES THROUGH THE UPCOMING WEEKEND. SUNNY MORNING ACROSS SE AZ WITH HIGH PRESSURE BUILDING IN FROM THE WEST. THIS RIDGE OF HIGH PRESSURE WILL BRING THE WARMEST TEMPERATURES THUS FAR FOR 2015 STARTING TODAY AND INTO THE WEEKEND.
A LOT OF WEATHER ISSUES FOR TONIGHT WITH THE FREEZING TEMPS AND POSSIBLE LIGHT SNOW ACCUMULATION IN THE SMOKIES. CHATTANOOGA AIRPORT, TN 55 31 49 28 / 10 10 10 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 50 27 44 25 / 30 40 0 0 OAK RIDGE, TN 51 27 44 26 / 40 30 0 0 TRI CITIES AIRPORT, TN 48 26 39 21 / 30 30 10 0 NC.
HIGH PRESSURE ALOFT WILL RESULT IN A SUNNY AND WARM DAY TODAY. ANOTHER DAY OF TRIPLE DIGIT HEAT IS EXPECTED IN DEATH VALLEY WITH TEMPERATURES WARMING INTO THE 90S ACROSS THE LOWER DESERTS AND LOWER COLORADO RIVER LOCATIONS.
Light precip chances associated with a sharp upper trough passing through the region this afternoon remain a challenge for today. Light snow was occurring over southern IL this morning due to forcing from the trough. High temps still look to reach the low to mid 40s this afternoon. A deep upper trough will cross the region today. Skies should clear out quickly as the trough axis shifts to our east. As northwest winds pour in colder air, most sites should see a hard freeze by daybreak Saturday, with lows in the lower 20s.
AS ANOTHER SPOKE OF PVA/TROF AXIS ENERGY MAKES PASSAGE.
DRY SURFACE RIDGING BUILDING OVER DEEP SOUTH TX IN THE WAKE OF THE FROPA YESTERDAY WILL MAINTAIN VFR CONDITIONS THROUGHOUT THE NEXT 24 HOURS FOR ALL OF THE RGV AIRPORTS. 500 MB AND SURFACE RIDGING WILL BE BUILDING BACK IN OVER DEEP SOUTH TX IN THE WAKE OF THE FROPA YESTERDAY. WILL GO WITH A GENERAL BLEND OF THE SHORT TERM TEMP GUIDANCE LEANING TO THE WARMER SIDE OF GUIDANCE FOR HIGHS.
MOSTLY SUNNY SKIES ARE PREVAILING THIS MORNING BUT SOME CLOUD COVER SHOULD MOVE IN AS THE UPPER TROUGH MOVES OVER THE REGION. LATEST SATELLITE IMAGERY INDICATED A BROAD UPPER TROUGH AXIS ABOUT TO PHASE TOWARD THE LOWER MISSISSIPPI VALLEY REGION. CLOUDS ASSOCIATED WITH THE UPPER TROUGH WAS PUSHING TOWARD THE REGION FROM THE OZARKS WHICH WAS ASSOCIATED WITH SOME VERY LIGHT RAIN. FOR TODAY MODELS SHOW THAT THE BROAD UPPER TROUGH AXIS WILL PASS THROUGH THE REGION. THE UPPER TROUGH AXIS WILL PUSH TO THE EAST FOR TONIGHT. NOT LOOKING FOR ANY FREEZING TEMPS IN THE NORTHEAST. IT WILL BE ANOTHER COOL DAY WITH HIGHS FROM THE LOWER 50S NORTH TO THE AROUND 70 SOUTHWEST.
626 AM CDT Fri Mar 27 2015 A highly amplified trough is currently over the Great Lakes Region down to the Mid Mississippi Valley Region. Temperatures will be in the lower to middle 30s tonight.
A RETURN OF COASTAL FOG AND LIGHT ONSHORE FLOW WILL MEAN COOLER TEMPERATURES TODAY.
AS THE HIGH PRESSURE PUSHES FARTHER TO THE SOUTHEAST THIS AFTERNOON AND EVENING. ANOTHER SUNNY DAY WITH WARMER TEMPERATURES IS IN STORE FOR SATURDAY WITH HIGHS IN LOWER 80S ACROSS THE HILL COUNTRY AND ALONG THE INTERSTATE 35 CORRIDOR.
Upper level ridge axis will continue to shift east as trough approaches from offshroe. CEO High pressure continues to dominate over California early this morning. Satellite imagery shows that the upper level ridge axis has shifted east into the Great Basin as a trough approaches the West Coast. Highs are still expected to reach the lower to mid 80s across the Valley today, with 60s and 70s over the mountains. We'll see a bit more cooling on Saturday as the trough slowly moves through the region.
SHOWERS AND SCATTERED THUNDERSTORMS TODAY WITH A COLD FRONTAL. COLD FRONT LIES FROM ERN GA TO THE FL PANHANDLE AND IS MOVING STEADILY EWD. SOUTHWEST WINDS NOTED AROUND 10-15 KT AT 9 AM AND WILL INCREASE TO IN ADVANCE OF A COLD FRONT TODAY.
A WEAK UPPER RIDGE WILL STEER WEATHER SYSTEMS MOSTLY INTO BRITISH COLUMBIA OVER THE WEEKEND.
CLOUDY IN THE SOUTH AND SUNNY IN THE NORTH AS THE COLD FRONT CONTINUES TO PUSH SOUTH AND EAST OF THE AREA. CLOUDS WILL CLEAR OUT IN THE NORTHEAST AND MAY ALLOW THE NORTHEAST TO DROP TO FREEZING IF NOT JUST BELOW BY SUNRISE SATURDAY.
/ISSUED 411 AM CDT FRI MAR 27 2015/ HIGH PRESSURE WILL CONTINUE TO BUILD OVER TX TODAY WITH NORTHERLY WINDS DECREASING. CLOUD COVER HAS DECREASED WITH A SHORT WAVE TROUGH EXITING THE AREA. HIGH PRESSURE MOVES EAST SATURDAY WITH SOUTHERLY WINDS RETURNING.
UPPER LEVEL TROUGH MOVING TOWARD THE REGION THIS AFTERNOON WITH A SMALL AREA OF SNOW SHOWERS ON THE INCREASE AHEAD OF IT INTO EASTERN OHIO AND NW PA. WITH THE UPPER TROUGH MOVING TO CENTRAL PENNSYLVANIA BY SATURDAY MORNING. WINDS WILL DIMINISH SATURDAY NIGHT AS HIGH PRESSURE MOVES OVERHEAD. RETURN FLOW BEHIND THE HIGH PRESSURE WILL FINALLY BRING SOME RELIEF FROM COLDER TEMPERATURES.
A COLD FRONT IS EXPECTED TO MOVE ACROSS THE DFW AREA THIS MORNING. /ISSUED 350 AM CDT FRI MAR 27 2015/ NORTH AND CENTRAL TEXAS REMAIN IN NORTHWEST FLOW ALOFT AS A POSITIVELY TILTED UPPER LEVEL TROUGH TAKES HOLD OF THE EASTERN HALF OF THE CONUS AND AN UPPER LEVEL RIDGE CONTINUES TO RESIDE OVER SOUTHERN CALIFORNIA. A REINFORCING COLD FRONT IS EXPECTED TO PUSH THROUGH THE AREA TODAY.
921 AM EDT FRI MAR 27 2015 LOW PRESSURE WILL EXIT INTO THE MARITIMES THIS MORNING. A COLD FRONT WILL DROP SOUTH ACROSS THE AREA TODAY. AND LOW PRESSURE PASSING OFFSHORE.
LEADING TO WARMER TEMPERATURES AND DRYING OVER THE WESTERN PART OF OUR AREA.
945 AM PDT FRI MAR 27 2015 HIGH PRESSURE ALOFT OVER CALIFORNIA WILL BRING ANOTHER UNSEASONABLY WARM DAY TODAY. COOLING WILL SPREAD INLAND OVER THE WEEKEND AS A WEAK TROUGH OF LOW PRESSURE DRIFTS ACROSS SOUTHERN CALIFORNIA.
1005 AM EDT FRI MAR 27 2015 ARCTIC HIGH PRESSURE WILL DROP SLOWLY SOUTHEAST FROM THE PLAINS TODAY REACHING THE OHIO VALLEY ON SATURDAY.
605 AM CDT FRI MAR 27 2015 HIGH PRESSURE OVER THE AREA WILL PROVIDE YET ONE MORE COOL DAY WITH SUNNY SKIES AND LIGHT WINDS.
EXPECT THIS BAND TO DEVELOP NORTHEASTWARD DUE TO LARGE SCALE ASCENT FROM AN APPROACHING UPPER LEVEL LONGWAVE TROUGH. A COLD FRONT WILL MOVE INTO THE TAMPA BAY AREA AROUND 20Z THEN INTO FORT MYERS AREA AROUND 23Z. EXPECT THUNDERSTORMS ALONG AND AHEAD OF THE COLD FRONT. COLD FRONT CONTINUES TO PUSH TO THE SOUTH AND EAST AND IS OVERSPREADING THE NORTH CENTRAL GULF OF MEXICO AT 9AM AND INTO THE WESTERN FLORIDA PANHANDLE.
High pressure will build over Idaho and western Montana today so after fog lifts and dissipates, conditions will be rather nice. Showers and isolated thunderstorms will move into western Montana overnight, followed by a cold front Saturday morning that will bring gusty winds. The trough and cold front will pass during Saturday morning and will be associated with rain and increased winds. Winds are expected to decrease during the evening as the trough continues off to the east.
MAIN FOCUS IN OUR FORECAST PROCESS TODAY WILL BE ON TOMORROW WITH WINDY TROUGH PASSAGE. ALL EYES ON AN ACTIVE SATURDAY AS A STRONG COLD FRONT PROGRESSES ACROSS THE REGION BRINGING BOTH HIGH WINDS AND FIRE WEATHER CONCERNS BY SATURDAY AFTERNOON AND EVENING. STRONG COLD FRONT EXPECTED TO PUSH FROM WEST TO EAST ACROSS THE REGION BEGINNING EARLY SATURDAY AFTERNOON IN LIVINGSTON/HARLOWTON AREAS.
727 AM EDT FRI MAR 27 2015 ARCTIC HIGH PRESSURE WILL DROP SLOWLY SOUTHEAST FROM THE PLAINS TODAY REACHING THE OHIO VALLEY ON SATURDAY.
THE SURFACE COLD FRONT WAS MOVING SOUTHWARD ACROSS CENTRAL ALABAMA WHERE IT JUST PASSED TROY AND OPELIKA AT THIS WRITING. THE LATEST WATER VAPOR MAGERY HAS THE UPPER TROUGH SWINGING THIS WAY WITH ANOTHER IMPULSE MOVING INTO THE NORTHWEST THIS AFTERNOON. THE FREEZING CONDITIONS WILL BE FAIRLY SHORT-LIVED. THE COLD FRONT HAS PUSHED SOUTH OF ALL TAF SITES THIS MORNING. AN APPROACHING UPPER TROUGH COULD BRING A FEW LIGHT SHOWERS INTO THE NORTHWEST SECTIONS OF CENTRAL ALABAMA THIS AFTERNOON BUT THE CHANCE OF ONE OCCURRING AT TCL OR BHM IS VERY LOW AND WILL NOT MENTION IN TAF.
A COLD FRONT IS PASSING OVER THE CWA THIS MORNING AND WILL BRING GUSTY NW WINDS AND COOLER TEMPERATURES TO THE AREA THIS AFTERNOON. MOST AREAS WILL REACH THEIR HIGH TEMPERATURE EARLIER IN THE DAY THAN NORMAL DUE TO THE COOLER AIR FILTERING IN BEHIND THE FRONT. EXPECT HIGHS FOR TODAY TO RANGE FROM THE LOW 60S IN THE ALABAMA COUNTIES TO THE LOW TO MID 70S TOWARDS THE BIG BEND.
742 AM EDT FRI MAR 27 2015 STRONG COLD FRONT TO CROSS THE REGION THROUGH THE PERIOD.
Have made some changes to the high wind watch. For portions of the high wind watch other than the Rocky Mountain Front delayed the beginning of the watch until 9 am Saturday as there does not appear to be much threat for high winds before then and mostly likely the real threat for high winds will be in the afternoon.
HIGH PRESSURE WILL SHIFT OVERHEAD THIS AFTERNOON THEN OFF TO THE EAST SATURDAY AHEAD OF A WEAK STORM SYSTEM. THIS SYSTEM WILL SEND A COLD FRONT INTO NORTHERN UTAH SATURDAY AFTERNOON AND SOUTH THROUGH THE AREA SATURDAY NIGHT. STRONG MID LEVEL RIDGING CENTERED ACROSS THE GREAT BASIN WILL BUILD EASTWARD TODAY.
BASE OF UPPER TROUGH TO REMAIN ACROSS NORTHERN CWA. /ISSUED 337 AM CDT FRI MAR 27 2015/ UPPER LEVEL TROUGH AXIS CURRENTLY SWINGING ITS WAY ACROSS THE MID MISS VALLEY WILL BE BRINGING WITH IT A MIX OF MID AND HIGH CLOUDS AFFECTING OUR REGION TODAY. LIFT IN ASSOCIATION WITH THIS UPPER TROUGH SHOULD REMAIN NORTHEAST OF OUR REGION TODAY WHERE SOME LIGHT PRECIP WILL BE POSSIBLE. WHICH WILL ALSO ALLOW A COLD FRONT TO MOVE THROUGH OUR REGION TODAY. IN THE WAKE OF THE COLD FRONT. UPPER RIDGING AT THE SFC WILL SETTLE INTO OUR REGION OVERNIGHT WITH THIS RIDGE AXIS QUICKLY MOVING EAST OF OUR REGION BY SATURDAY MORNING.
The clouds will also help moderate temperatures overnight with lows expected to hold in the lower 30s.
AND PORTIONS OF SOUTHWEST ARKANSAS AS AN UPPER-TROUGH SWINGS SOUTHEAST ACROSS THE OHIO RIVER VALLEY.
928 AM PDT FRI MAR 27 2015 HIGH PRESSURE ALOFT IF MOVING EAST.
CLEAR SKIES THIS MORNING WITH HIGH PRESSURE OVER THE REGION. AN UPPER LEVEL TROUGH AND COLD FRONT ARE APPROACHING THE COAST AND WILL BRING INCREASING CLOUDS THIS AFTERNOON AND EVENING. MORNING SOUNDINGS INDICATE THE LOW LEVEL AIRMASS IS WARMER TODAY AS COMPARED TO YESTERDAY.
WV IMAGERY AND 12Z UPPER AIR ANALYSIS INDICATE AN AMPLIFIED UPPER LEVEL RIDGE OF HIGH PRESSURE SHIFTING EASTWARD ACROSS THE INTERMOUNTAIN WEST ENHANCING A NORTHWESTERLY FLOW ALOFT ACROSS THE WESTERN HIGH PLAINS. NEAR THE SURFACE, A BROAD AREA OF HIGH PRESSURE IS MOVING SOUTHEASTWARD ACROSS THE CENTRAL PLAINS. CHALLENGING FORECAST EARLY THIS MORNING WITH RESPECT TO (MOSTLY ELEVATED) RAIN AND SNOW SHOWERS BEING DRIVEN SOUTH ALONG A 850-700 MB BAROCLINIC/WARM FRONTOGENETIC ZONE FROM WESTERN NEBRASKA INTO WESTERN KANSAS. THE NAM SUGGESTED A DRY FORECAST THIS MORNING FOR OUR AREA, WITH NO PRECIPITATION BEING GENERATED DESPITE THE INCREASE IN 2D FRONTOGENESIS THROUGH THE HIGHWAY 83 CORRIDOR. HOWEVER THE CONSENSUS OF MODELS SUPPORTS 60S ACROSS A LARGE PORTION OF THE FORECAST AREA BY AFTERNOON WITH MILDER OVERNIGHT LOWS TONIGHT IN THE LOW TO MID 40S AND GENERALLY MORE ISOLATED 30'S.
HIGH PRESSURE ACROSS THE REGION WILL MAINTAIN VFR CONDITIONS THROUGH THE TAF PERIOD. CLEAR AND QUIET WITH NEAR TO SLIGHTLY ABOVE NORMAL TEMPS EXPECTED THROUGH THE SHORT TERM IN RESPONSE TO A RIDGE BUILDING ACROSS THE AREA. THE ONSHORE WINDS WILL LEAD TO SLIGHTLY WARMER HIGHS ON SAT.
ALTHOUGH A SURFACE COLD FRONT HAS MOVED EAST OF THE REGION. AN UPPER TROUGH IS CURRENTLY ACROSS THE WESTERN GREAT LAKES. THE TROUGH WILL CROSS THE REGION THIS EVENING. AN INCH OF SNOW WOULD NOT BE UNREASONABLE NORTH OF INTERSTATE 80 AND IN THE HIGHER ELEVATIONS OF PA/WV/MD. WITH THE UPPER TROUGH MOVING TO CENTRAL PENNSYLVANIA BY SATURDAY MORNING. WINDS WILL DIMINISH SATURDAY NIGHT AS HIGH PRESSURE MOVES OVERHEAD. RETURN FLOW BEHIND THE HIGH PRESSURE WILL FINALLY BRING SOME RELIEF FROM COLDER TEMPERATURES.
A back-door cold front will move into the area this afternoon resulting in light and variable winds at KABI/KBBD by mid/late afternoon. We'll see a weak back-door cold front move into the Big Country and Heartland, stalling from near a Hamlin-Brownwood line.
VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24 HOURS AS HIGH PRESSURE BUILDS INTO NORTH TEXAS. /ISSUED 411 AM CDT FRI MAR 27 2015/ HIGH PRESSURE WILL CONTINUE TO BUILD OVER TX TODAY WITH NORTHERLY WINDS DECREASING. CLOUD COVER HAS DECREASED WITH A SHORT WAVE TROUGH EXITING THE AREA. HIGH PRESSURE MOVES EAST SATURDAY WITH SOUTHERLY WINDS RETURNING.
/ISSUED 354 AM CDT FRI MAR 27 2015/ AN UPPER RIDGE ACROSS THE WESTERN STATES TODAY WILL SLOWLY BUILD EAST THROUGH THE WEEKEND.
Cloud cover will be prevalent early in the morning as the trough axis crosses, then tapering off west to east throughout the day as subsidence behind the trough sets in. A cold night ahead for central and southeast IL as 1029 mb Canadian high pressure over western Ontario into the eastern Dakotas settles into the western Great Lakes by Saturday morning and ridges south into IL overnight into Sat morning. Short wave trof passes across IL Sat morning and into KY/TN by sunset Sat while 1028 mb Canadian high pressure settles into the Ohio river valley. This to ensure another chilly day across IL with highs in the lower 40s and even some upper 30s in east central IL.
THE RAIN AND ASSOCIATED WARM FRONT ARE FORECAST TO MOVE SLOWLY EAST TODAY AND WASHOUT AROUND BROKEN BOW AND AINSWORTH THIS EVENING. HIGHS TODAY SHOULD RISE INTO THE 60S WEST OF THE WARM FRONT. A PACIFIC COLD FRONT RACES THROUGH THE CWA SATURDAY EVENING AND OVERNIGHT.
CHATTANOOGA AIRPORT, TN 55 31 49 28 / 10 10 10 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 50 27 44 25 / 30 40 0 0 OAK RIDGE, TN 51 27 44 26 / 40 30 0 0 TRI CITIES AIRPORT, TN 48 26 39 21 / 30 30 10 0 NC.
1245 PM EDT FRI MAR 27 2015 HIGH PRESSURE WILL BEGIN TO BUILD IN FROM THE WEST TODAY AND TONIGHT. LOW PRESSURE WILL TRACK WELL SOUTH OF THE GULF OF MAINE ON SATURDAY.
MUCH OF THE AREA IS IN THE MID 30S TO LOW 40S WHEN NORMAL TEMPERATURES FOR LATE MARCH ARE 5-8 DEGREES WARMER. A STRONG RIDGE IS IN PLACE OVER THE WESTERN THIRD OF THE NATION WITH A DEEP TROUGH FROM THE GREAT LAKES INTO THE SOUTHERN MISSISSIPPI RIVER VALLEY. TO TUPELO MISSISSIPPI ARE EXPECTED TO FALL NEAR OR BELOW FREEZING LATE TONIGHT.
1001 AM CDT FRI MAR 27 2015 SHARP UPPER TROUGH AXIS DOWN THROUGH FAR WESTERN KENTUCKY WILL SWING ACROSS OUR AREA THIS AFTERNOON WITH INCREASING LAPSE RATES AND SOLAR INSOLATION AM EXPECTING TO SEE SCATTERED SHOWERS DEVELOPING.