Aikyam-Lab/Synoptic-Bench huggingface dataset:
THE LOWER FLORIDA KEYS HAVE REMAINED RELATIVELY FREE OF RAIN. PROBABLY OWING TO GREATER BOUNDARY-LAYER MASS CONVERGENCE/ASCENT BROUGHT ON BY STRONGER LOW- LEVEL NORTHEAST-TO-EAST WINDS SOUTH OF A SPRAWLING ANTICYCLONE. THE LOCAL AIR MASS IS EXPECTED TO REMAIN WARMER AND WETTER THAN AVERAGE THROUGH THE NEXT SEVEN DAYS. AND NO SIGNIFICANT COLD FRONTS ARE FORESEEN.
1251 PM EST SUN DEC 6 2015 HIGH PRESSURE WILL MAINTAIN DRY WEATHER AND MILD AFTERNOON TEMPERATURES. A LOW PRESSURE SYSTEM MAY BRING LIGHT RAIN TO AREAS SOUTH OF PITTSBURGH ON MONDAY.
1054 AM MST SUN DEC 6 2015 AN UPPER LEVEL RIDGE WILL BE OVER THE AREA TODAY WITH DRY WEATHER IN STORE. HIGH TEMPS TODAY SHOULD MOSTLY BE IN THE 50S ACROSS THE SOUTHEAST PLAINS AND IN THE 40S IN THE HIGH VALLEYS.
1246 PM EST SUN DEC 6 2015 A RIDGE OF HIGH PRESSURE WILL LINGER OVER THE UPPER OHIO VALLEY THROUGH TONIGHT. LOW PRESSURE WILL PASS TO THE SOUTH OF THE LOCAL AREA ON MONDAY.
1258 PM EST SUN DEC 6 2015 SOUTHERLY FLOW WILL OCCUR TODAY ON THE BACK SIDE OF A HIGH PRESSURE SYSTEM TO THE EAST OF THE AREA. WEAK LOW PRESSURE WILL MOVE THROUGH THE REGION SUNDAY NIGHT INTO MONDAY.
HIGH PRESSURE ALOFT AND WEAK OFFSHORE FLOW WILL BRING FAIR AND DRY WEATHER THROUGH MIDWEEK WITH WARM DAYS AND COOL NIGHTS.
300 PM EST SUN DEC 6 2015 HIGH PRESSURE REMAINS IN CONTROL OF THE SENSIBLE WEATHER TODAY WITH TEMPS SOARING INTO THE UPPER 50S TO LOWER 60S. DID OPT TO KEEP THE FAR EAST A BIT COOLER OVERALL IN THE MORE EXTREME VALLEY LOCATIONS. THESE CLOUDS ARE IN ADVANCE AND NEAR A DEEPENING CLOSED LOW ACROSS THE UPPER MIDWEST. THIS UPPER LOW IS EXPECTED TO MOVE EAST INTO THE OHIO VALLEY TONIGHT INTO EARLY MONDAY. GUIDANCE REMAINS IN GOOD AGREEMENT WITH THE UPPER LEVEL LOW MOVING INTO THE MID ATLANTIC BY MONDAY NIGHT.
THE UPPER LEVEL LOW PRESSURE SYSTEM WILL TRACK ACROSS THE GREAT LAKES/OHIO VALLEY REGION TONIGHT. THE UPPER LOW WILL TRACK INTO NORTHERN VA BY LATE MONDAY AFTERNOON. A DEPARTING SYSTEM MONDAY NIGHT WILL ALLOW CLOUDS TO DECREASE AND TEMPERATURES TO DROP TO NEAR TO BELOW FREEZING.
252 PM EST SUN DEC 6 2015 HIGH PRESSURE WILL PERSIST OVER THE AREA THROUGH TONIGHT. UPPER LEVEL LOW PRESSURE WILL CROSS THE MID-ATLANTIC MONDAY AFTERNOON AND EVENING.
322 PM CST SUN DEC 6 2015 WEAK COLD FRONT IS NOW ENTERING SE OK. FAIRLY ZONAL FLOW IN WAKE OF THIS FRONT WITH WARMING TREND UNDERWAY BY MID WEEK WITH DEEPENING SW FLOW AS DEEP UPPER LOW MOVES INTO BIG BEND AREA BY SUNDAY AFTN.
420 PM EST SUN DEC 6 2015 HIGH PRESSURE WILL MOVE EAST TONIGHT. A WEAK COLD FRONT WILL CROSS THE REGION MONDAY.
/ISSUED 306 PM CDT WED JUN 24 2015/ SUBSIDENCE ASSOCIATED WITH AN UPPER LEVEL RIDGE WAS PROVIDING SEASONABLY HOT CONDITIONS ACROSS NORTH TEXAS WHILE KEEPING A LID ON CONVECTIVE DEVELOPMENT ACROSS THE AREA. A WEAK WAVE ON THE SOUTHWEST PERIPHERY OF THE RIDGE WAS RESULTING IN SEABREEZE THUNDERSTORMS INLAND OF THE UPPER TX AND LA COASTS.
WITH A WARM FRONT FROM NW MISSOURI TO THE EXTREME SOUTHERN TIP OF IL. THE BIGGEST QUESTION WILL BE THE INFLUENCE THAT RELATIVELY COOLER AIR FROM THE MORNING/EARLY AFTERNOON SHOWERS ON THE MOVEMENT OF THE WARM FRONT. MANY OF THE SHORT TERM MODELS INDICATE THAT AN INCREASING AND BACKING LOW LEVEL JET WITH TIME WILL GIVE THE WARM FRONT A PUSH INTO CENTRAL IL VERY LATE TONIGHT. A FEW OF THE SHORT RANGE MODELS WERE SHOWING THE HIGHEST AXIS OF HEAVY RAIN FARTHER SOUTH (JUST NORTH OF THE I-72 CORRIDOR). THE TRAILING OUTFLOW/COLD FRONT WILL SINK INTO CENTRAL ILLINOIS SETTING UP THE REDEVELOPMENT OF THUNDERSTORMS TOMORROW AFTERNOON.
FAVORABLE BOATING CONDITIONS WITH ATLC RIDGE AXIS MEANDERS SLOWLY TO THE SRN FL PENINSULA THU WHILE A SERIES OF LOW PRESSURE SYSTEMS WORK THEIR WAY ACRS THE ERN CONUS.
938 PM EDT WED JUN 24 2015 HIGH PRESSURE BUILDING OVER THE REGION WILL BRING QUIET WEATHER TONIGHT INTO THURSDAY MORNING.
BUILDING UPPER LEVEL RIDGING INFLUENCES ALONG WITH A WEAK SFC FRONT THAT WILL SLOWLY DRIFT SWD THRU AROUND 25/06Z INTO THE MID STATE BEFORE BEING PUSHED N AS A WARM FRONT ACROSS NRN PORTIONS AND OUT OF MID STATE 25/12Z- 25/18Z. UPPER RIDGE STRETCHING ACROSS SOUTHERN U. BY THURSDAY NIGHT UPPER RIDGE WILL BE RETROGRADING ALLOWING THE BELT OF WESTERLIES CURRENTLY TO OUR NORTH TO BEGIN MOVING SOUTHWARD AS A BROAD TROUGH DEVELOPS ACROSS EASTERN HALF OF U.
LATEST BRO RADAR INDICATES ONGOING CONVECTION MAINLY ALONG AND WEST OF I-69C AND ACROSS THE LOWER TEXAS GULF WATERS. H5 INVERTED TROUGH CONTINUE TO PROGRESS WWD ACROSS WEST TEXAS. BUT RIDGING IS NOT REALLY BUILDING BACK SOUTHWARD SIGNIFICANTLY.
/ISSUED 351 PM CDT WED JUN 24 2015/ THE SUBTROPICAL RIDGE ALOFT WILL MAINTAIN THE HOT AND HUMID CONDITIONS THROUGH LATE THURSDAY. BECAUSE OF A WESTERLY SHIFT IN THE POSITION OF THE UPPER-LEVEL RIDGE.
900 PM EDT WED JUN 24 2015 HIGH PRESSURE WILL BUILD OVERHEAD TONIGHT BEFORE MOVING OFF THE COAST THURSDAY. A WARM FRONT WILL PASS THROUGH THE REGION LATER THURSDAY AND LOW PRESSURE WILL RIDE ALONG THE BOUNDARY.
635 PM CDT WED JUN 24 2015 WARMER FOR MOST TODAY AS A WEAK COLD FRONT MOVES FROM NORTH TO SOUTH THROUGH THE AREA. A BROAD AREA OF HIGH PRESSURE STRETCHING FROM THE NORTHERN PLAINS INTO ONTARIO WILL BUILD TONIGHT INTO TOMORROW.
744 PM EDT WED JUN 24 2015 HIGH PRESSURE BUILDING OVER THE REGION WILL BRING QUIET WEATHER TONIGHT INTO THURSDAY MORNING.
A HIGH PRESSURE RIDGE WILL REMAIN NORTH OF THE FLORIDA KEYS OVERNIGHT THROUGH THURSDAY.
1015 PM EDT WED JUN 24 2015 A WEAK COLD FRONT WILL CROSS THE AREA TONIGHT BEFORE STALLING TO OUR SOUTH THURSDAY AND THURSDAY NIGHT.
/ISSUED 352 PM CDT Wed Jun 24 2015/ (Tonight and Thursday) The upper level ridge will begin building across the southwest states on Thursday, with weak northwest flow aloft developing across the Southern Plains by Thursday evening.
1057 PM EDT WED JUN 24 2015 HIGH PRESSURE BUILDING OVER THE REGION WILL BRING QUIET WEATHER TONIGHT INTO THURSDAY MORNING.
TEMPERATURES ARE MUCH COOLER ACROSS PORTIONS OF THE MIDSOUTH THAN THEY WERE 24 HOURS AGO. AS MUCH AS 20 DEGREES COOLER AT TUP AND 10 DEGREES COOLER AT MEMPHIS. IN THE LOWER 90S. TEMPERATURES MAY REBOUND A FEW DEGREES AT THE COOLER LOCATIONS BEFORE SUNSET.
20Z WATER VAPOR IMAGERY HAS THE CENTERED OF THE MID LEVEL RIDGE CENTERED OVER NORTHERN AR WITH SOMEWHAT ZONAL FLOW OVER THE NORTHERN PLAINS. AT THE SURFACE, AN INVERTED TROUGH OF LOW PRESSURE EXTENDED EAST NORTHEAST FROM SOUTHEASTERN CO AND INTO SOUTHEAST NEB. THE WARM FRONT EXTENDED FROM NEAR LNK SOUTHEAST THROUGH NORTHWESTERN MO. THE WARM FRONT IS EXPECTED TO REMAIN MAINLY TO THE NORTH THROUGH THE NIGHT KEEPING US IN THE WARM MOIST AIRMASS. BECAUSE OF THIS HAVE LOWS ONLY COOLING OFF INTO THE LOWER AND MIDDLE 70S.
HIGH PRESSURE ALOFT WILL STRENGTHEN ACROSS THE REGION THROUGH THE UPCOMING WEEKEND. WITH A RIDGE BUILDING OVERHEAD FROM THE SOUTHEAST. RIDGING BUILDING IN FROM THE SOUTHEAST WILL ALSO CONTRIBUTE TO ADDITIONAL SUBSIDENCE. THE FORECAST AREA REMAINS ALONG THE WESTERN PERIPHERY OF AN ELONGATED SUBTROPICAL RIDGE AXIS. WHICH IS CENTERED ACROSS THE LOWER MS VALLEY REGION. THIS MID LEVEL RIDGE IS FORECAST TO AMPLIFY ACROSS THE REGION DURING THE LATTER PORTION OF THE WEEK INTO THE UPCOMING WEEKEND.
716 PM EDT WED JUN 24 2015 AN UPPER-LEVEL RIDGE ACROSS THE SOUTHERN STATES WILL HOLD ABOVE NORMAL TEMPERATURES ACROSS THE AREA THROUGH THE END OF THE WORKWEEK. COOLER TEMPERATURES AND INCREASED CHANCES FOR CONVECTION WILL ARRIVE THIS WEEKEND AS THE AN UPPER-LEVEL TROUGH DEVELOPS OVER THE EASTERN STATES. PERSISTENCE IS THE WORD FOR THE SHORT TERM AS THE UPPER LEVEL RIDGE REMAINS OVER THE AREA.
1141 PM EDT WED JUN 24 2015 HIGH PRESSURE WILL SLOWLY BUILD TOWARD THE REGION TONIGHT INTO THURSDAY.
1145 PM EDT WED JUN 24 2015 AN UPPER-LEVEL RIDGE ACROSS THE SOUTHERN STATES WILL HOLD ABOVE NORMAL TEMPERATURES ACROSS THE AREA THROUGH THE END OF THE WORKWEEK. COOLER TEMPERATURES AND INCREASED CHANCES FOR CONVECTION WILL ARRIVE THIS WEEKEND AS THE AN UPPER-LEVEL TROUGH DEVELOPS OVER THE EASTERN STATES. PERSISTENCE IS THE WORD FOR THE SHORT TERM AS THE UPPER LEVEL RIDGE REMAINS OVER THE AREA.
717 PM CDT WED JUN 24 2015 CURRENTLY A WARM FRONT IS GRADUALLY LIFTING ACROSS SW AND FAR SOUTHERN IOWA. COMPLEX SCENARIO SETTING UP ACROSS IOWA TONIGHT WITH A WARM FRONT SURGING NORTH-NORTHEAST INTO SOUTHWEST IOWA PROVIDING SOME DESTABILIZATION OVER SOUTHWEST IOWA. EXPECTING THE WARM FRONT TO SURGE NORTH BETWEEN THE INTERSTATE 80 TO HIGHWAY 20 CORRIDOR.
718 PM EDT WED JUN 24 2015 A WEAK COLD FRONT WILL CROSS THE AREA TONIGHT BEFORE STALLING TO OUR SOUTH THURSDAY AND THURSDAY NIGHT.
CHATTANOOGA AIRPORT, TN 71 97 75 89 / 10 20 30 60 KNOXVILLE MCGHEE TYSON AIRPORT, TN 70 95 73 88 / 10 10 20 60 OAK RIDGE, TN 70 96 73 88 / 10 10 30 60 TRI CITIES AIRPORT, TN 65 92 68 86 / 10 10 20 60.
TEMPERATURES ARE MUCH COOLER ACROSS PORTIONS OF THE MIDSOUTH THAN THEY WERE 24 HOURS AGO. AS MUCH AS 20 DEGREES COOLER AT TUP AND 10 DEGREES COOLER AT MEMPHIS. IN THE LOWER 90S. TEMPERATURES MAY REBOUND A FEW DEGREES AT THE COOLER LOCATIONS BEFORE SUNSET. DUE TO A DEEP UPPER LOW OVER THE HUDSON/S BAY REGION COOL AIR HAS CIRCULATED OVER OUR AREA. THUS AREAS OF LOW PRESSURE WILL TRACK JUST SOUTH OF THE FORECAST AREA THROUGH THE PERIOD.
/ISSUED 346 PM CDT WED JUN 24 2015/ A WEAKNESS BETWEEN THE RIDGES TO OUR EAST AND WEST WILL SLOWLY TAKE SHAPE ACROSS OUR AREA OVER THE NEXT 24 HOURS ALTHOUGH SIGNIFICANT MOISTENING WILL NOT OCCUR AT LEAST THROUGH THE DAYTIME ON THURSDAY.
702 PM CDT WED JUN 24 2015 12Z UA ANALYSIS HAS AN 850MB WARM FRONT FROM CENTRAL NEBRASKA. 18Z SFC DATA PLACES AN INFERRED LOW JUST EAST OF KOMA WITH A WARM FRONT RUNNING FROM THE LOW TO NEAR KSTL. DEW POINTS ALONG AND SOUTH OF THE WARM FRONT WERE IN THE UPPER 60S TO LOWER 70S. NORTH OF THE WARM FRONT DEW POINTS WERE IN THE 50S TO LOWER 60S. COOLER TEMPERATURES.
BUILDING UPPER LEVEL RIDGING INFLUENCES ALONG WITH A WEAK SFC FRONT THAT WILL CONTINUE TO SLOWLY DRIFT SWD THRU MID STATE THRU AROUND 25/06Z BEFORE BEING PUSHED N AS A WARM FRONT ACROSS NRN PORTIONS AND OUT OF MID STATE 25/12Z-25/18Z. BUILDING UPPER LEVEL RIDGING INFLUENCES ALONG WITH A WEAK SFC FRONT THAT WILL SLOWLY DRIFT SWD THRU AROUND 25/06Z INTO THE MID STATE BEFORE BEING PUSHED N AS A WARM FRONT ACROSS NRN PORTIONS AND OUT OF MID STATE 25/12Z- 25/18Z. UPPER RIDGE STRETCHING ACROSS SOUTHERN U. BY THURSDAY NIGHT UPPER RIDGE WILL BE RETROGRADING ALLOWING THE BELT OF WESTERLIES CURRENTLY TO OUR NORTH TO BEGIN MOVING SOUTHWARD AS A BROAD TROUGH DEVELOPS ACROSS EASTERN HALF OF U.
HIGH PRESSURE REMAINS STRETCHED ACROSS THE EASTERN GULF OF MEXICO.
721 PM EDT WED JUN 24 2015 HIGH PRESSURE BUILDING OVER THE REGION WILL BRING QUIET WEATHER TONIGHT INTO THURSDAY MORNING.
828 PM EDT WED JUN 24 2015 HIGH PRESSURE WILL SLOWLY BUILD TOWARD THE REGION TONIGHT INTO THURSDAY.
An upper level ridge of high pressure is centered over the central U. Highs are in the lower 90s with heat index values around 100 degrees currently across the area. With the current ridge position, tonight's storm track will be north of the Ozarks. Thursday will generally be a repeat of today as highs warm into the lower 90s with heat index values around 100.
903 AM EDT FRI MAY 15 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE REGION TODAY THEN MOVE TO THE EAST TONIGHT. A WARM FRONT WILL REMAIN SOUTHWEST OF THE REGION SATURDAY.
404 AM PDT Fri May 15 2015 Variable clouds and mainly mountain showers or thunderstorms through the coming week as a series of weak low pressure systems move across California. Pacific low pressure system now centered off the Socal coast and moving to the southeast. As the low center pushes eastward through Socal today. GFS model shows slightly unstable conditions this afternoon so may see some isolated thunderstorm activity but this will likely be confined to the higher elevations since the main trough axis will be east of the CWA by this afternoon. Upper low continues eastward into the eastern Great Basin on Saturday but wrap around moisture around back side of low could still bring some shower activity to the Sierra.
HEAVY CLOUD COVER WILL KEEP TEMPERATURES A BIT COOLER TODAY AND LIKELY REDUCE INSTABILITY KEEPING THUNDERSTORMS TO A MINIMUM. AN UPPER LOW OVER CENTRAL CALIFORNIA WILL MOVE NORTHEAST THROUGH NEVADA TODAY. THE AREA TO SEE THE GREATEST COVERAGE OF SHOWERS AND THE HIGHEST PRECIP AMOUNTS WILL BE WALLOWA COUNTY THIS AFTERNOON THROUGH SATURDAY MORNING.
THE DISTURBANCE WILL PUSH INTO SCAL THIS AFTERNOON WHILE THE LARGE SCALE TROUGH MOVES EAST OF THE SIERRA.
1238 PM EDT FRI MAY 15 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE REGION TODAY THEN MOVE TO THE EAST TONIGHT. A WARM FRONT WILL REMAIN SOUTHWEST OF THE REGION SATURDAY.
941 AM EDT FRI MAY 15 2015 HIGH PRESSURE OFF THE MID ATLANTIC COAST WILL MOVE SOUTH OVER THE NEXT SEVERAL DAYS.
BROAD SLOW-MOVING UPPER-LEVEL TROF WILL BRING EXTENSIVE MOISTURE INTO THE REGION GENERATING WIDESPREAD LOW- AND MID-LEVEL CLOUDS AND PERIODS OF RAIN TODAY/TONIGHT. CEILINGS WILL STEADILY LOWER TO IFR AT MOST TAF SITES TONIGHT AS THE TROF PULLS IN ADDITIONAL MOISTURE AND RAIN BECOMES MORE WIDESPREAD. WARANAUSKAS AN UPPER LEVEL LOW PRESSURE SYSTEM CENTERED OVER CALIFORNIA AND NEVADA WILL SLOWLY MOVE TOWARDS SOUTHWEST MONTANA.
954 AM CDT FRI MAY 15 2015 HIGH PRESSURE NOSING INTO NORTHEAST NORTH DAKOTA ALONG WITH A DRIER AIRMASS (CLEAR SKY). HIGH PRESSURE CONTINUE TO BUILD INTO THE REGION TODAY.
THIS HIGH IS PRODUCING MODERATE TO FRESH EASTERLY WINDS ACROSS THE KEYS AND SURROUNDING WATERS. DEEP LAYERED RIDGING IS IN PLACE ACROSS THE BROADER REGION. ACROSS THE LOWER KEYS AND SURROUNDING WATERS. DUE TO A BROAD AREA OF HIGH PRESSURE EXTENDING FROM THE NORTHWESTERN ATLANTIC.
730 AM EDT FRI MAY 15 2015 A WARM FRONT WILL LIFT NORTHEAST INTO THE REGION TODAY AND TONIGHT.
AN ADVANCING WARM FRONT MAY CAUSE SOME SHOWERS/THUNDERSTORMS TO PUSH IN FROM THE SOUTH LATE TONIGHT. FORECAST CONFIDENCE HIGH THE 250 MB UPPER TROUGH IS OVER THE EASTERN GREAT LAKES THIS MORNING AS A WEAK RIDGE BUILDS INTO WISCONSIN THIS AFTERNOON AND TONIGHT. WEAK 700 MB DOWNWARD MOTION BEHIND THE DEPARTING MID LEVEL TROUGH AXIS. WITH SOME BREAKS IN THE LOW CLOUDS THIS AFTERNOON. AN ADVANCING WARM FRONT MAY CAUSE SOME SHOWERS/THUNDERSTORMS TO PUSH IN FROM THE SOUTH LATE TONIGHT. IN ADDITION SURFACE WARM FRONT WILL ALSO BE TRENDING NORTHWARD THROUGH SRN/CNTRL WI. STILL AN ONSHORE COMPONENT SO COOLER READINGS NEAR THE LAKE.
914 AM EDT FRI MAY 15 2015 HIGH PRESSURE IN THE UPPER LEVELS REMAINS ANCHORED OVER THE BAHAMAS AND RIDGES NORTHWARD OVER FLORIDA AND INTO THE SOUTHEAST U. THIS RIDGING IS SUPPORTING STRONG HIGH PRESSURE JUST OFF THE ATLANTIC SEABOARD NEAR VIRGINIA. A PREDOMINANT EASTERLY WIND FLOW ON THE SOUTH SIDE OF THIS HIGH PRESSURE WILL CONTINUE ACROSS THE PENINSULA TODAY. OVERALL EAST THROUGH SOUTHEAST WIND FLOW WILL CONTINUE THROUGH THE WEEKEND AS HIGH PRESSURE TO THE NORTH RIDGES ACROSS THE FLORIDA PENINSULA AND OVER THE GULF COAST WATERS.
BREEZY AND COOLER WITH WAVES OF SHOWERS MOVING INLAND. DRIER AIR WILL BEGIN TO FILTER IN OVER OUR EASTERN GA ZONES AS SUBSIDENCE INCREASES WHILE A CONVERGENT BAND OF SHOWERS AND ISOLATED TSTORMS ON THE SOUTHERN EDGE OF THE HIGH ACROSS OUR COASTAL FL COUNTIES IS PUSHED FARTHER S AND WEST. ADVERTISED THE HIGHEST RAIN CHANCES THIS MORNING GENERALLY FROM MACCLENNY SOUTHEASTWARD TOWARD PALATKA AND BUNNELL.
945 AM EDT FRI MAY 15 2015 A WARM FRONT WILL LIFT NORTHEAST INTO THE REGION TODAY AND TONIGHT.
LINGERING ENERGY IS PINWHEELING AROUND A BROAD UPPER LOW CENTERED OVER NORTHERN NEVADA THIS MORNING. THE LOW WILL BE SLOW TO EXIT COMPLETELY FROM THE PICTURE. AND TOMORROW MOST PLACES SHOULD BE DRY AND WARMER BY A FEW DEGREES.
SOME PARTIAL SUNSHINE IS HELPING THEM WARM INTO THE LOWER TO MID 70S.
A SLOW MOVING LOW PRESSURE SYSTEM WITH SEVERAL EMBEDDED WEATHER DISTURBANCES WILL CROSS THE REGION THROUGH THE WEEKEND. A SLOW MOVING LOW PRESSURE SYSTEM WILL SLOWLY CROSS THE REGION TODAY THROUGH SATURDAY.
THE UPPER LEVEL LOW PRESSURE SYSTEM RESPONSIBLE FOR THE COOLER AND SHOWERY WEATHER WILL CONTINUE TO MOVE EAST WITH PRECIPITATION CHANCES DECREASING THROUGH THE DAY. DRIER AND SLIGHTLY WARMER WEATHER WILL MOVE IN FOR THE WEEKEND. THE SECOND PIECE OF THE UPPER LEVEL LOW HAS NOW MOVING IN TO THE SAN DIEGO AREA. BUT WITH CLOUDS FILLING IN ON THE LOW'S WRAPAROUND THROUGH SLO COUNTY.
705 AM EDT FRI MAY 15 2015 HIGH PRESSURE OFF THE MID ATLANTIC COAST WILL MOVE SOUTH OVER THE NEXT SEVERAL DAYS.
901 AM EDT FRI MAY 15 2015 A WARM FRONT WILL LIFT NORTHEAST INTO THE REGION TODAY AND TONIGHT.
IT WAS A MUGGY MORNING ACROSS MID TN WITH TEMPS IN THE 70S AND DEW POINTS IN THE LOW TO MID 60S. HIGHS WILL BE MOSTLY IN THE LOWER 80S. SURFACE MAP THIS MORNING SHOWS HIGH PRESSURE TO OUR EAST WITH A MOIST SOUTHERLY FLOW ACROSS MIDDLE TENNESSEE AND A STORM SYSTEM BREWING OVER THE WESTERN U. LOOK FOR SCATTERED THUNDERSTORMS TO DEVELOP TODAY AS ADDITIONAL MOISTURE ADVECTS INTO MIDDLE TENNESSEE AND A WEAK TROUGH PROVIDES SOME FOCUS.
638 AM CDT FRI MAY 15 2015 (TODAY AND TONIGHT) AN UPPER LEVEL TROUGH OF LOW PRESSURE HAS MOVED INTO THE AREA. HIGHS WILL BE IN THE LOW 80S WITH LOWS IN THE MID 60S.
1217 PM EDT FRI MAY 15 2015 A WARM FRONT WILL LIFT NORTHEAST FROM THE OHIO VALLEY AND INTO THE REGION LATER THIS AFTERNOON AND TONIGHT.
CHATTANOOGA AIRPORT, TN 81 65 80 65 / 40 40 60 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 82 64 81 63 / 20 30 60 30 OAK RIDGE, TN 83 65 80 65 / 20 30 60 30 TRI CITIES AIRPORT, TN 82 60 79 60 / 20 20 50 30.
TEMPERATURES ARE CURRENTLY 10 TO 15 DEGREES COOLER THAN THIS TIME 24 HOURS AGO DUE TO THE COLD FRONT PASSAGE YESTERDAY AND LACK OF CLOUD COVER OVERNIGHT. WE ARE ON TRACK TO WARM UP TO SEASONABLE HIGH TEMPERATURES IN THE LOWER 60S TODAY. WITH REINFORCING COLD FRONT EXPECTED TO PUSH ACROSS THE TERMINALS BTWN 19/20-22Z.
410 PM EST THU NOV 19 2015 HIGH PRESSURE OVER THE OHIO VALLEY WILL PROVIDE DRY AND SLIGHTLY BELOW NORMAL TEMPERATURES THROUGH FRIDAY. AND HIGHS ON FRIDAY WILL BE IN THE LOWER TO MIDDLE 40S.
A VERY BROAD UPPER LEVEL TROUGH DRAPED ACROSS THE CONUS WILL RESULT IN A SOMEWHAT ZONAL FLOW ACROSS TX THROUGH THE SHORT TERM. HIGH PRESSURE NE OF THE CWA WILL CONTINUE TO MOVE E TONIGHT WITH A GENERALLY LIGHT TO MOD EASTERLY FLOW ACROSS S TX. THIS WILL USHER LOW LEVEL MOISTURE BACK INTO S TX ALONG WITH SLIGHTLY WARMER TEMPS. A COASTAL TROF IS PROGD TO DVLP FRI/FRI NIGHT AHEAD OF A STRONG COLD FRONT. THE COASTAL TROF WILL PROVIDE LOW LEVEL MOISTURE CONVERGENCE AND COMBINE WITH AN EMBEDDED UPPER LEVEL SHORT WAVE. INSTABILITY AND THE APPROACHING COLD FRONT.
1201 PM CST THU NOV 19 2015 A cold front was in the process of moving southeast across the Missouri Ozarks during the predawn hours. Despite a day with weak cold air advection, high temperatures should still make it into the lower 50s over most areas with plenty of sunshine around. Areas of the eastern Ozarks may not warm out of the lower 50s.
A DRY AND WEAKENING COLD FRONT WILL SWING THROUGH AND EXIT THIS EVENING. BUT OVERALL SHOULD BE CLEAR TO MOSTLY CLEAR FOR THE PERIOD AS HIGH PRESSURE BUILDS IN BEHIND THIS FRONT.
226 PM CST THU NOV 19 2015 An area of high pressure, currently centered over Kansas, will drift east tonight, with the center reaching Kentucky by daybreak Friday. This motion will push an associated ridge axis into the forecast area by late tonight. The approach of the high and dry airmass in place will provide quiet weather across central and southeast Illinois tonight. Challenging forecast today as watching northern stream wave topping northeast Pacific ridge and possed to plunge into the longwave trough over central North America. With cold air already in place in wake of last system and elongated high pressure extending southwest into Texas inhibiting pre-wave waa aloft, seems as though precip-type will depend on lower atmosphere. Even with ground temperatures above freezing (4-inch soil temp at PIA is 51 degrees) snowfall intensity may be high enough to outpace melting.
1236 PM EST THU NOV 19 2015 COOLER AND DRIER AIR WILL BEGIN TO MOVE INTO THE REGION TODAY AS A COLD FRONT MOVES EAST THROUGH THE REGION.
214 PM EST THU NOV 19 2015 COOLER AIR ARRIVES TONIGHT WITH A WEAKENING COLD FRONT. THE SECOND IS A WEAKENING COLD FRONT WHICH IS CURRENTLY SWEEPING ACROSS CENTRAL OHIO AND EASTERN KENTUCKY.
324 PM CST THU NOV 19 2015 THE COLD FRONT THAT BROUGHT 2 TO OVER 4 INCHES OF RAINFALL IN PORTIONS OF MADISON COUNTY IS SLIDING EAST INTO THE FLORIDA PANHANDLE THIS AFTERNOON. ALTHOUGH A SECONDARY COLD FRONT IS PUSHING INTO NW ALABAMA AT THIS TIME. ALTHOUGH DEWPOINTS MAY DROP INTO THE LOWER TO MID 30S NORTH OF THE TENNESSEE RIVER. ALTHOUGH THIS HIGH WILL BRING MUCH DRIER AIR AND COOLER TEMPERATURES INTO THE AREA. TEMPERATURES WILL BE SLIGHTLY COOLER TOMORROW. WITH THE COOLER START TO THE DAY.
940 AM PST THU NOV 19 2015 OFFSHORE WINDS AND HIGH PRESSURE WILL KEEP TEMPERATURES ABOVE NORMAL INTO THE WEEKEND.
1118 AM CST THU NOV 19 2015 POLAR HIGH PRESSURE TO CONTINUE THROUGH FRIDAY MORNING. /ISSUED 955 AM CST THU NOV 19 2015/ COLD FRONT AS OF 15Z WAS LOCATED NEAR A PBF.
436 PM EST THU NOV 19 2015 COLDER AIR ARRIVES TONIGHT WITH A DRY COLD FRONT. COLD FRONT INTO CENTRAL OHIO AND QUICKLY MOVING EAST.
335 PM EST THU NOV 19 2015 THE AVIATION SECTION HAS BEEN UPDATED BELOW HIGH PRESSURE WILL BUILD INTO THE OHIO VALLEY THROUGH FRIDAY.
/ISSUED 1026 AM EST THU NOV 19 2015/ SFC COLD FRONT CURRENTLY LOCATED ALONG AN AUGUSTA TO DUBLIN TO ALBANY LINE. SECONDARY COLD FRONT ACROSS THE TENNESSEE VALLEY WILL SLOWLY MAKE ITS WAY TOWARD THE STATE TODAY. IT IS BEHIND THIS FRONT WHERE THE COOLER AIR IS HIDING. THE COLD FRONT IS CURRENTLY MOVING THROUGH THE ATL AREA AND WILL CONTINUE MOVING EAST THROUGH TONIGHT. A HIGH PRESSURE RIDGE BUILDS BACK INTO THE AREA TODAY FROM THE CENTRAL PLAINS WHICH WILL KEEP THINGS DRY THROUGH THE END OF THE SHORT TERM. HIGH PRESSURE WILL STILL IN PLACE ACROSS THE CWFA FRIDAY NIGHT.
317 PM EST THU NOV 19 2015 A WEAK SECONDARY COLD FRONT IS CURRENTLY MAKING ITS WAY ACROSS EASTERN KY. ONCE THIS COLD FRONT MOVES THROUGH. AND WIND FLOW WILL PULL IN COOLER TEMPERATURES FROM SOUTHERN CANADA. THIS WILL BE ENHANCED AS THE CENTER OF HIGH PRESSURE MOVES OVERHEAD OF KY DURING THE DAY TOMORROW. WHILE HIGH TEMPS REACHED THE LOW 60S THIS AFTERNOON. HIGHS FOR TOMORROW SHOULD ONLY MAKE IT TO THE LOW 50S. GENERALLY CLEAR CONDITIONS OVERNIGHT BOTH TONIGHT AND TOMORROW NIGHT WILL LIKELY RESULT IN A RIDGE VALLEY SPLIT IN TEMPERATURES. TRIED TO REFLECT THIS IN THE LOW TEMP GRIDS.
TEMPERATURES WERE RUNNING ABOUT 10 DEGREES COOLER THAN YESTERDAY ACROSS THE FORECAST AREA IN THE WAKE OF THE PASSAGE OF A COLD FRONT THIS MORNING. THIS TROUGH WILL SEND A STRONG FRONT PLUNGING SOUTHWARD THROUGH COLORADO AND KANSAS BY AFTERNOON. THOUGH THIS IS NOT AS 24 HOURS AGO GIVEN SOME SLOWING OF THE PARENT TROUGH EXITING WYOMING.
1136 AM MST THU NOV 19 2015 ADJUSTED THE HIGH WIND WARNING TO START THE ARLINGTON AREA NOW AS SEVERAL HIGHWAY SENSORS ARE NOW INDICATING GUSTS BETWEEN 50 AND 60 MPH.
MOUNTAIN TOP FLOW WILL INITIALLY BE MORE SOUTHWEST TO WEST WHICH WILL FAVOR ZONE 31 BUT LAPSE RATES WILL BE ON THE LOWER SIDE. THE FLOW TURNS MORE NORTHWEST ON FRIDAY WITH IMPROVING LAPSE RATES AS THE TROF MOVES ACROSS THE AREA. A COLD FRONT WILL MOVE SOUTHWARD ACROSS THE PLAINS DURING THE LATE MORNING AND AFTERNOON HOURS AS SURFACE WINDS SHIFT NORTH AND NORTHEAST.
MOSTLY SUNNY SKIES EXPECTED FOR FRI AFTERNOON WITH HIGHS IN THE LOWER/MID 70S. INCREASING CLOUDS EXPECTED FRI NIGHT INTO SAT WITH THE APPROACH OF THE NEXT STRONG COLD FRONT FROM CANADA. THE CENTER OF THE HIGH EXPECTED TO SETTLE OVER THE AREA. HIGHS MON ABOUT A COUPLE OF DEGREES WARMER THAN SUN.
WINDS WILL START TO INCREASE WHILE SHIFTING OUT OF THE SOUTHWEST IN RESPONSE TO AN APPROACHING COLD FRONT WHICH WILL MOVE THROUGH THE TERMINALS BEYOND THIS FORECAST CYCLE. PUNCTUATED BY A FEW DRY COLD FRONTS. UPPER LEVEL HEIGHTS CONTINUE RISING TODAY AS SUBTLE RIDGING BUILDS OVER THE SOUTHWESTERN U. THE COLD FRONT THAT MOVED THROUGH OVERNIGHT WILL ACT TO KEEP TEMPERATURES COOLER THAN YESTERDAY. WITH MOST LOCATIONS REACHING THE LOW TO MID 50S. AND SLIDE OFF TO THE EAST AS A LEESIDE TROUGH STARTS DEVELOPING. THIS SOUTHERLY SURFACE FLOW WILL KEEP TEMPERATURES FROM FALLING TOO FAR BELOW FREEZING TONIGHT. SURFACE PRESSURE GRADIENT AHEAD OF THIS FEATURE NOT AS STRONG ON FRIDAY SO HAVE KEPT TIMING OF STRONGEST WINDS CLOSER TO FROPA AND BEYOND TO ALIGN WITH BOTH GRADIENT TIGHTENING AS HIGH PRESSURE BUILDS ACROSS THE MOUNTAINS AND MID/UPPER LEVEL SUPPORT ARRIVES.