Aikyam-Lab/Synoptic-Bench huggingface dataset:
438 AM EDT THU AUG 20 2015 A LARGE-SCALE ANALYSIS EARLY THIS MORNING REVEALS A DEEP LAYER MEAN ANTICYCLONE CENTERED NEARLY ON TOP OF THE FLORIDA KEYS. DEPEND PRIMARILY ON THE INTERACTION BETWEEN THE LARGE-SCALE SUBTROPICAL ANTICYCLONE AND LOCAL MESOSCALE CIRCULATIONS. THE 1000-700MB ANTICYCLONE IS CENTERED JUST NORTHEAST OF THE BAHAMAS WITH A RIDGE EXTENDING WEST-NORTHWESTWARD TO THE NORTHERN GULF COAST.
504 AM EDT THU AUG 20 2015 A COLD FRONT WILL BRING SHOWERS AND A FEW THUNDERSTORMS TODAY. FOLLOWED BY COOLER AND LESS HUMID CONDITIONS INTO THE WEEKEND. AS THE PARENT LOW/S ASSOCIATED COLD FRONT CROSSES THE UPPER OHIO VALLEY REGION. THE COLD FRONT IS PROGGED TO QUICKLY EXIT THE REGION LATER THIS AFTERNOON/EARLY EVENING. BROAD UPPER TROUGHING THROUGH THE WEEKEND BRINGING DRY AND LESS HUMID CONDITIONS.
Winds will become southerly this afternoon but 850 mb temperatures will remain cooler with a broad upper trough over the Midwest.
A STRONG TROUGH WILL TRACK THROUGH BRITISH COLUMBIA TONIGHT AND INTO MONTANA FRIDAY AFTERNOON. THE ECMWF ENSEMBLE NORMALIZED SPREAD SHOWED LOW CONFIDENCE IN THE TROUGH PATTERN FOR SAT. DETERMINISTIC MODELS DID AGREE ON A SHARP UPPER TROUGH CROSSING THE AREA WITH STRONG Q-VECTOR CONVERGENCE ON THE FRONT SIDE OF THE TROUGH. UPPER RIDGING AND DRY WEATHER BUILD INTO THE AREA SAT NIGHT THROUGH TUE RESULTING IN A WARMING TREND WITH TEMPERATURES IN THE 90S MON AND TUE. THE GFS MOVES THE NEXT PACIFIC TROUGH INTO THE AREA WED NIGHT WITH SOME QPF. WHILE THE ECMWF MAINTAINS AN UPPER RIDGE OVER THE REGION. THE ECMWF BRINGS SOME ENERGY INTO THE AREA THROUGH THE RIDGE RESULTING IN QPF WED NIGHT AND THU.
The strong upper low/trough that brought the wet weather yesterday will continue to lift northeast into southeast Canada today. At the surface, the core of high pressure will migrate from the southern Plains today across the Heartland tonight and into the Ohio Valley on Friday. The end result will be dry and cooler weather through Friday. Highs will struggle to reach 80 degrees today and then climb into the lower 80s on Friday.
MORE DEVELOPMENT IS ALSO OCCURRING BACK ACROSS WESTERN KENTUCKY OUT AHEAD OF THE APPROACHING COLD FRONT. AREA OF LOW PRESSURE CONTINUES TO PUSH NORTHEAST ACROSS THE NORTHERN GREAT LAKES. WITH A TRAILING COLD FRONT STRETCHING BACK SOUTH ACROSS ILLINOIS AND MISSOURI THIS AFTERNOON. COLD FRONT WILL MOVE LATE TONIGHT AND AROUND DAYBREAK. COOLER AND LESS HUMID CONDITIONS WILL SPREAD IN BEHIND THE FRONT. SETTING THE STAGE FOR A MUCH COOLER NIGHT FOR THURSDAY NIGHT. THIS WILL ALLOW FOR COOLER.
133 AM EDT THU AUG 20 2015 ATLANTIC HIGH PRESSURE WILL PREVAIL THROUGH LATE WEEK WHILE AN INLAND TROUGH OF LOW PRESSURE AND WEAK COLD FRONT EVENTUALLY APPROACH FROM THE NORTHWEST.
1204 AM CDT THU AUG 20 2015 A COLD FRONT CONTINUES TO APPROACH THE SOUTHEAST TEXAS TERMINALS THIS EVENING. MADE LITTLE CHANGE TO ONGOING TAF PACKAGE WITH THE COLD FRONT EXPECTED TO SAG SOUTHWARD OVERNIGHT. LL FLOW HAS BACKED THANKS TO THE THERMAL LOW IN THE LOWER RIO GRAND VALLEY AND INCOMING COLD FRONT. LOWERED THEM A LITTLE TO THE NORTH OF THE LINE AND RAISED THEM IN CLOSER PROXIMITY TO THE COLD FRONTS IMPACTS IN THE FAR NORTHERN CWA.
FRIDAY A DEEPER TROUGH WILL DIG INTO THE IDAHO PANHANDLE.
SURFACE COLD FRONT ALONG A LAKE AMISTAD TO KERRVILLE TO AUSTIN TO CAMERON LINE WILL DRIFT TO THE SOUTH AND STALL ALONG A DEL RIO TO SAN ANTONIO TO SCHULENBURG LINE BY MIDDAY. AND UPPER LEVEL TROUGH OVER SOUTHERN TEXAS PROVIDE THE STRONGEST LIFT COINCIDING WITH THE DEEPEST MOISTURE. WILL MAINTAIN SLIGHT TO LOW CHANCE POPS ACROSS THE SOUTHEASTERN HALF OF SOUTH CENTRAL TEXAS TONIGHT INTO FRIDAY AS DEEPER MOISTURE LINGERS ON THE EAST SIDE OF THE WEAK UPPER LEVEL TROUGH ALONG WITH A POSSIBLY ENHANCED SEABREEZE.
WHILE HIGH PRESSURE OVER THE SOUTHERN PLAINS WILL DRIFT NORTHEASTWARD TOWARD THE OHIO VALLEY AREA. MOSTLY CLEAR SKIES SHOULD REMAIN THROUGH AFTERNOON TODAY WITH THE APPROACHING HIGH PRESSURE AND DRY WESTERLY FLOW.
Fortunately breezy conditions this afternoon and the passage of a cold front on Friday will help clean out the air. Another point of good news lies in the likelihood for some moisture with Friday's cold front.
CENTER OF UPPER HIGH REMAINS ACROSS THE GULF OF MEXICO. USED THE GUIDANCE CONSENSUS FOR THE HIGH TEMPERATURE FORECAST. USED THE WARMER LOW TEMPERATURE GUIDANCE BECAUSE OF THE HIGH MOISTURE.
640 AM EDT THU AUG 20 2015 COLD FRONT PUSHES THROUGH TODAY.
THE COLD FRONT NEAR KTYR/KSHV AND KELD WITH MVFR CIGS. /ISSUED 1003 PM CDT WED AUG 19 2015/ OUR COLD FRONT HAS PUSHED TO NEAR A ACT. THE EVENING WATER VAPOR IMAGERY CONTINUES TO INDICATE AN UNUSUALLY DEEP UPPER TROUGH TRAVERSING E ACROSS THE MIDWEST AND MID MS VALLEY. WITH THE TRAILING END OF THE TROUGH EXPECTED TO LINGER OVER CNTRL AND ECNTRL TX THROUGH THE OVERNIGHT HOURS. AND SHIFT E ALONG AND BEHIND THE FRONT /AND CLOSER TO THE 925-850MB TROUGH THAT WILL REMAIN NEARLY STATIONARY ALONG THE RED RIVER VALLEY OF SRN OK/N TX INTO SW AND SCNTRL AR/.
355 AM EDT THU AUG 20 2015 A COLD FRONT OVER INDIANA WILL SLOWLY APPROACH THE AREA TODAY. OCCLUDED/COLD FRONT HAS CROSSED LAKE MICHIGAN AND EXTENDS SOUTH FROM THERE TO THE MID- SOUTH STATES. SCATTERED ADVANCE ACTIVITY HAS DEVELOPED EAST OF THE BLUE RIDGE. COLD FRONT PUSHES EAST ACROSS THE AREA LATE THIS AFTERNOON INTO THE OVERNIGHT. FRONT PUSHES EAST FROM THE BLUE RIDGE LATE THIS EVENING. AND ANOTHER UPR LVL TROF/LOW PRES/CD FNT WL BE MOVG INTO THE UPR GRT LKS AND THEN INTO QUEBEC TUE/WED. WIDESPREAD SHRA/TSRA SPREADS EAST ACROSS THE DC METROS LATE THIS AFTERNOON THROUGH THE EVENING AS A COLD FRONT CROSSES THE AREA. THEN LULL BEFORE WIDESPREAD HEAVY AND GUSTY SHOWERS/THUNDERSTORMS LATE THIS AFTERNOON INTO THE OVERNIGHT AS A COLD FRONT CROSSES THE BAY BEFORE STALLING ALONG THE MID-ATLANTIC COAST.
THE HIGH VALLEYS MID 30S TO MID 40S. IN THE 70S AND 80S ACROSS THE HIGH VALLEYS. AHEAD OF STRONGER TROUGH MOVING MOVING ACROSS THE NORTHERN TIER OF STATES. EMBEDDED WAVES COULD HELP SPARK ISOLATED STORMS OVER AND NEAR THE SOUTHERN MTS EARLY THURSDAY EVENING AND ACROSS ALL OF THE HIGHER TERRAIN ON FRIDAY. AS MODEL SOUNDINGS ARE INDICATING DEW PTS MIXING OUT INTO THE LOWER 30S AND 40S ACROSS THE AREA.
EXPECT A LIGHT WIND AND BELOW NORMAL TEMPERATURES IN THE LOW TO UPPER 50S.
THIS WOULD BRING THE LOWER PWATS/DRIER AIR ACROSS THE PLAINS STATES INTO THE AREA. AN UPPER LEVEL HIGH WILL BE LOCATED OVER THE GULF OF MEXICO AND WITH MOISTURE STILL LINGERING OVER THE AREA AND DAYTIME HEATING.
COULD SEE SOME LOW LYING AREAS OF PATCHY OR SHALLOW FOG AS DEWPOINT DEPRESSSIONS HOVER NEAR ZERO WITH LOWS THIS MORNING IN THE LOWER 50S. THIS INFLUX OF WARMER AIR INTO THE AREA WILL RAISE HIGHS BACK INTO THE LOWER 80S. FRIDAY WILL BE WARMER AND BREEZY FROM THE SOUTH. THE LOW LEVEL JET WILL INCREASE AND EXPECT SOME ISENTROPIC LIFT ACROSS THE AREA, PARTICULARLY EAST CENTRAL KANSAS.
HIGH PRESSURE IN THE MID TO UPPER LEVELS WAS CENTERED JUST OFF THE COAST OF BAJA CALIFORNIA. A BIT COOLER TODAY.
145 AM EDT THU AUG 20 2015 A COLD FRONT WILL MOVE ACROSS NORTHERN OHIO AND NORTHWEST PA TONIGHT INTO THURSDAY MORNING. HIGH PRESSURE WILL THEN CONTROL THE WEATHER INTO THE WEEKEND. HOWEVER LOCATIONS ACROSS NW OHIO WILL SEE THE FRONT PASS BEFORE SUNRISE WHICH WILL ALLOW LOWS TO DIP TO THE LOWER 60S. COLD FRONT WILL BE MOVING ACROSS THE AREA THURSDAY EARLY AFTERNOON. HIGH PRESSURE WILL THEN INCREASE ITS INFLUENCE INTO FRIDAY. IT WILL BE A COOLER DAY ON THURSDAY WITH HIGHS IN THE LOWER TO MID 70S.
Thursday will be slightly cooler but continued dry with increasing winds. The winds are expected to peak Thursday evening into Friday with the passage of a strong cold front, especially across the Okanogan valley and other north/south valleys.
624 AM EDT THU AUG 20 2015 A COLD FRONT ACROSS OHIO WILL MOVE EAST BY EARLY AFTERNOON. HIGH PRESSURE WILL THEN DRIFT NORTH INTO THE AREA AND DOMINATE THE WEATHER FOR THE WEEKEND. A COLD FRONT.
Next chance for rain looks to arrive, perhaps as early as, Friday night ahead of another large trough expected to swing across the CONUS this weekend. Initial threat of activity looks focused on the the late night hours of Friday as the nocturnal jet kicks up with the passage of the leading trough.
SCATTERED SHOWERS CONTINUE TO MOVE NORTHEAST AT THIS TIME ACROSS THE EASTERN HALF OF CENTRAL KENTUCKY ALONG AND AHEAD OF A COLD FRONT. THE REST OF THE SHORT TERM THROUGH FRIDAY WILL BE DOMINATED BY HIGH PRESSURE RESULTING IN A MOSTLY CLEAR SKY WITH COOL LOWS TONIGHT MAINLY IN THE 50S AND HIGHS FRIDAY AROUND 80/LOWER 80S.
COASTAL TEMPS WOULD BE AROUND 5 DEGREES COOLER IF SEA SURFACE TEMPS WERE CLOSER TO NORMAL. MODELS REMAIN IN GOOD AGREEMENT THAT A LONGWAVE TROF WILL SET UP FROM OFF THE NORCAL COAST INTO CANADA. LONGER RANGE GUIDANCE GOING INTO SEPTEMBER BRINGS COOLER THAN NORMAL WEATHER TO OUR ENTIRE REGION AS A LONGWAVE TROF IS POSITIONED OVER MUCH OF THE WEST.
227 AM EDT THU AUG 20 2015 COLD FRONT PUSHES THROUGH TODAY.
343 AM EDT THU AUG 20 2015 ALOFT - A RIDGE CENTERED OVER NORTHWEST BAJA CALIFORNIA REACHED UP ACROSS CA/NV/AZ. A LOW ON THE MN/ONTARIO BORDER TROUGHED DOWN TO THE LOWER MISSISSIPPI VALLEY. A RIDGE OVER FL SPRAWLED ACROSS THE ADJACENT WATERS. SURFACE - LOW PRESSURE OVER LAKE SUPERIOR HAD A FRONT THAT ARCED UP INTO ONTARIO THEN REACHED ACROSS THE GREAT LAKES AND THROUGH THE OHIO VALLEY TO THE SOUTHERN PLAINS. ATLANTIC HIGH PRESSURE RIDGED WEST ACROSS NORTHERN FL TO MUCH OF THE GULF OF MEXICO. THE UPPER RIDGE DOMINATES AS IT MEANDERS FROM OVER FL TO ABOVE THE CENTRAL GULF OF MEXICO. THE RIDGE AXIS WEAKENING AS IT SAGS SOUTH THEN RE- LOCATING OUT OVER THE GULF WILL KEEP LOW LEVEL FLOW RATHER LIGHT AND ALLOW A MORE ROBUST SEA BREEZE. THANKS TO THE UPPER RIDGE.
Mostly clear skies and dry conditions are expected today through a majority of tonight as high pressure dominates the region. This area of high pressure will be east of the area today through tonight leading to south to south southwest winds across western Kansas. Highs today look to reach into the lower 80s with lows tonight in the lower 60s.
TEMPERATURES TODAY WILL WARM UP TO AROUND SEASONABLE VALUES ACROSS THE FORECAST AREA AS WARMER AIR MOVES IN FROM THE WEST. EXPECT HIGHS AT OR ABOVE 90F ACROSS THE LOWER ARK RIVER VALLEY AND 80S ON THE DIVIDES. CANT RULE OUT AN ISOLD LTG STRIKE ACROSS THE MTNS AND POSSIBLY THE ADJACENT RIDGES ON THE PLAINS. NORTHERN STREAM TROUGH MOVES INTO THE NORTHERN ROCKIES.
A COLD FRONT WILL PUSH THROUGH THE REGION TONIGHT AND EARLY FRIDAY. HIGH PRESSURE WILL DOMINATE OVER THE WEEKEND. THEN MAX TEMPS MAY END UP BEING 3-5 DEGREES COOLER.
337 AM EDT THU AUG 20 2015 SHOWERS WILL PERSIST THROUGH MID MORNING IN ASSOCIATION WITH A COLD FRONT MOVING THROUGH THE AREA. OFFERING MUCH DRIER CONDITIONS WITH SLIGHTLY COOLER TEMPERATURES AND LESS HUMIDITY. COLD FRONT IS CURRENTLY RIGHT ON THE WESTERN CWA BORDER WITH A PRE FRONTAL TROUGH THROUGH DAYTON. A LINE OF WEAK SHOWERS CURRENTLY EXISTS ALONG THE PRE FRONTAL TROUGH STRETCHING BACK TOWARDS THE MAIN FRONT. DEWPOINTS WILL ALSO BE FALLING THROUGH THE DAY INTO THE LOWER 50S. HIGH PRESSURE WILL BEGIN TO SETTLE OVERHEAD TONIGHT ALLOWING WINDS TO GO LIGHT TO CALM AND TEMPERATURES TO FALL. FRIDAY AFTERNOON THE UPPER LEVEL LOW THAT BROUGHT A COLD FRONT THROUGH THE AREA THURSDAY MORNING WILL BE RAPIDLY PULLING NORTH LEAVING BEAUTIFUL CONDITIONS IN ITS WAKE.
147 AM EDT THU AUG 20 2015 WARM AND MUGGY CONDITIONS TONIGHT INTO THURSDAY MORNING WILL GIVE WAY TO A SLOW MOVING COLD FRONT LATER THURSDAY INTO FRIDAY. THIS FRONT WILL BRING WELCOMED RAINFALL TO THE REGION ALONG WITH COOLER MORE SEASONAL TEMPERATURES.
THE HIGHEST FOCUS SHOULD REMAIN OVER THE NW GULF WATERS THIS MORNING WHERE THE MOISTURE LOAD AND ADVECTING WINDS ARE PERPENDICULAR TO THE BOUNDARY.
316 AM CDT THU AUG 20 2015 MAIN FORECAST CONCERNS ARE ON LINGERING LIGHT RAIN SHOWERS THIS MORNING AND CLOUD TRENDS THROUGH THE DAY AS LOW PRESSURE EXITS. LATEST WATER VAPOR IMAGERY EARLY THIS MORNING SHOWED UPPER LEVEL LOW PRESSURE OVER SOUTHWEST ONTARIO LIFTING NORTHEAST. A TRAILING TROUGH ACROSS THE UPPER MISSISSIPPI RIVER VALLEY WILL GRADUALLY PROGRESS NORTHEAST TODAY. TAKING A LOOK UPSTREAM TO THE NORTHWEST A FAIRLY EXPANSIVE CLOUD DECK REMAINED AND IS EXPECTED TO MOVE SOUTHEAST AS MOISTURE CONTINUES TO WRAP AROUND THE TROUGH. A WEAK RIDGE THEN BUILDS IN TONIGHT WITH QUIET WEATHER EXPECTED.
351 AM CDT THU AUG 20 2015 CHALLENGE AND ATTENTION TURNS TO THE LOW PRESSURE SYSTEM FORECAST TO TRACK ACROSS THE AREA THIS WEEKEND.
HIGH PRESSURE IS IN PLACE ACROSS THE GREAT PLAINS WITH LOW PRESSURE DEVELOPING ACROSS MONTANA AND CENTRAL WYOMING. SHORT RANGE MODELS ARE IN GOOD AGREEMENT ON DRY AND MUCH WARMER CONDITIONS FOR THE NEXT COUPLE OF DAYS AS HIGH PRESSURE SLIDES SOUTHEAST OF THE REGION AND ALLOWS WARMER AIR TO BUILD IN FROM THE WEST. WITH HIGH TEMPERATURES RISING INTO THE LOWER TO MID 80S ACROSS THE PLAINS. BRINGING WARMER AND DRIER AIR INTO THE FORECAST AREA.
608 AM EDT THU AUG 20 2015 SHOWERS WILL PERSIST THROUGH MID MORNING IN ASSOCIATION WITH A COLD FRONT MOVING THROUGH THE AREA. OFFERING MUCH DRIER CONDITIONS WITH SLIGHTLY COOLER TEMPERATURES AND LESS HUMIDITY. COLD FRONT IS CURRENTLY RIGHT ON THE WESTERN CWA BORDER WITH A PRE FRONTAL TROUGH THROUGH DAYTON. A LINE OF WEAK SHOWERS CURRENTLY EXISTS ALONG THE PRE FRONTAL TROUGH STRETCHING BACK TOWARDS THE MAIN FRONT. DEWPOINTS WILL ALSO BE FALLING THROUGH THE DAY INTO THE LOWER 50S. HIGH PRESSURE WILL BEGIN TO SETTLE OVERHEAD TONIGHT ALLOWING WINDS TO GO LIGHT TO CALM AND TEMPERATURES TO FALL. FRIDAY AFTERNOON THE UPPER LEVEL LOW THAT BROUGHT A COLD FRONT THROUGH THE AREA THURSDAY MORNING WILL BE RAPIDLY PULLING NORTH LEAVING BEAUTIFUL CONDITIONS IN ITS WAKE.
348 AM EDT THU AUG 20 2015 HIGH PRESSURE OFF THE COAST WILL KEEP SOUTHERLY FLOW AND A WARM AND HUMID AIR MASS OVER NEW ENGLAND FOR THE NEXT SEVERAL DAYS. AN UPPER LEVEL TROUGH OF LOW PRESSURE MOVING THROUGH CANADA WILL SEND A FRONT TOWARD NEW ENGLAND ON FRIDAY.
A VERY MOIST TROPICAL FLOW WILL CONTINUE AHEAD OF THE TROUGH BRINGING HIGH POPS AGAIN. MODELS DIFFER AFTER TODAY WITH THE GFS DRYING OUT THE NORTHERN PART OF THE CWA WHILE THE ETA/ECWMF STALL THE TROUGH AND KEEP MOISTURE OVERRUNNING THE FRONT AS FAR NORTH AS THE GA/TN BORDER.
THE TROPICAL MOISTURE REGIME LOOKS TO REMAIN LOCKED IN PLACE AS ROTATION AROUND MID/UPPER LEVEL HIGH CENTER OVER THE NORTHEASTERN GULF CONTINUES TO DRAW THIS AIR FROM ITS SOURCE REGION OVER THE WESTERN GULF.
230 AM EDT THU AUG 20 2015 A COLD FRONT WILL MOVE SLOWLY THROUGH THE REGION THURSDAY INTO THURSDAY NIGHT. THE SFC COLD FRONT IS FORECASTED TO MOVE THROUGH THE CENTRAL MOUNTAINS BY LATE AFTERNOON AND THE SUSQUEHANNA VALLEY THURSDAY EVENING. HIGH TEMPERATURES ON THURSDAY WILL REMAIN MILD RANGING FORM THE MID 70S IN THE NORTHWEST MOUNTAINS TO THE LOW 80S ACROSS THE LOWER SUSQUEHANNA. HIGH PRESSURE WILL BE IN CONTROL ACROSS MOST OF THE AREA THIS WEEKEND.
558 AM EDT THU AUG 20 2015 WINDS WILL INCREASE LATE THIS MORNING WITH BREEZY CONDITIONS EXPECTED THIS AFTERNOON AS A DEEP LOW PRESSURE AREA MOVES FROM LAKE SUPERIOR TO JAMES BAY. HIGHS TODAY WILL BE IN THE LOW TO MID 70S. LOW TONIGHT WILL BE IN THE LOW TO MID 50S. CAUSING THE SHOWERS BEHIND A COLD FRONT TO END THIS MORNING AS CLEARING GRADUALLY MOVES EAST. WINDS WILL INCREASE LATE THIS MORNING WITH BREEZY CONDITIONS EXPECTED THIS AFTERNOON AS A DEEP LOW PRESSURE AREA MOVES FROM LAKE SUPERIOR TO JAMES BAY.
BUT THE COLD FRONT THAT BROUGHT THE COOLER/DRIER WEATHER WILL RETURN NORTH AS A WARM FRONT TONIGHT AND FRIDAY.
FRIDAY AND FRIDAY NIGHT WILL FEATURE WARMING TEMPS ALOFT AS SOUTHERLY WINDS INCREASE AHEAD OF AN APPROACHING COLD FRONT. FOR NOW WILL KEEP SLIGHT CHANCE POPS IN OVER THE EASTERN CWA FRIDAY NIGHT WITHIN THE LOW LEVEL JET.
358 AM CDT THU AUG 20 2015 TODAY HEIGHTS BEGIN TO FALL ACROSS THE INTERMOUNTAIN WEST WHERE THE PREVAILING NORTHWEST FLOW ALOFT WILL FOCUS THE LEE TROUGH ON THE HIGH PLAINS. FRIDAY A TROUGH/DRY LINE WILL PUSH INTO THE FAR WESTERN PORTION OF NEB. MEANWHILE A COLD FRONT WILL BE PUSHING SOUTHEAST ACROSS THE NORTHERN ROCKIES. OTHER FOCUS FOR THE AFTERNOON WILL BE WEST OF THE TROUGH. THEN EYES FOCUS ON THE COLD FRONT.
UPPER LEVEL TROUGH SWINGING THROUGH THE GREAT LAKES AND OH/TN VALLEYS WILL HELP SPREAD SOME SHOWERS AND STORMS INTO ALABAMA THROUGHOUT THE DAY. LONG RANGE MODELS SUGGEST THAT THE UPPER AIR PATTERN WILL GENERALLY KEEP A TROUGH IN THE EAST HALF OF THE COUNTRY. 00Z GFS SUGGESTS ANOTHER UPPER LEVEL LOW CUTTING OFF IN THE SOUTHEAST STATES. BUT IT DOES HAVE THE TROUGH.
THE AIRMASS WILL WARM AGAIN FOR TODAY AND TOMORROW BEFORE ANOTHER DRY COLD FRONT CROSSES THE AREA FOR THE END OF THE WEEK.
THEY WERE OCCURRING NEAR AND AHEAD OF A COLD FRONT. DRIER AIR WILL ARRIVE AS HIGH PRESSURE BUILDS IN BEHIND THE FRONT. AS A SERIES OF RIDGES OF HIGH PRESSURE MOVE ACROSS THE REGION. THE MODELS ALL AGREE THAT A RIDGE OF HIGH PRESSURE WILL BE IN PLACE ACROSS THE CENTRAL AND NORTHERN PLAINS.
HIGH PRESSURE REMAINS PARKED TO OUR WEST WITH NORTHWESTERLY UPPER FLOW IN PLACE OVER THE DESERT SOUTHWEST. THE HIGH CENTER WILL CONTINUE TO SHIFT EASTWARD OVER THE NEXT COUPLE DAYS SHIFTING OUR WINDS OUT OF THE WEST SOUTHWEST.
A LEESIDE SFC TROF OF LOW PRESSURE IS FCST TO ESTABLISH ITSELF AROUND EXTRM ERN NM OR OUR FAR WRN ZONES. ALONG WITH THE SFC TROF OF LOW PRESSURE AND THE HIGHER TERRAIN OF ERN NM AND SERN CO ACTING AS FOCUSING FEATURES.
DRY CONDITIONS ON THE WAY FOR FRIDAY INTO THE WEEKEND AS A SUBTROPICAL RIDGE OVER THE NORTHERN GULF OF MEXICO LOOKS TO NOSE IT'S WAY INTO THE REGION.
410 AM EDT THU AUG 20 2015 SHOWERS BEHIND A COLD FRONT WILL END THIS MORNING. WINDS WILL INCREASE LATE THIS MORNING WITH BREEZY CONDITIONS EXPECTED THIS AFTERNOON AS A DEEP LOW PRESSURE AREA MOVES FROM LAKE SUPERIOR TO JAMES BAY. HIGHS TODAY WILL BE IN THE LOW TO MID 70S. LOW TONIGHT WILL BE IN THE LOW TO MID 50S. CAUSING THE SHOWERS BEHIND A COLD FRONT TO END THIS MORNING AS CLEARING GRADUALLY MOVES EAST. WINDS WILL INCREASE LATE THIS MORNING WITH BREEZY CONDITIONS EXPECTED THIS AFTERNOON AS A DEEP LOW PRESSURE AREA MOVES FROM LAKE SUPERIOR TO JAMES BAY.
TEMPERATURES WILL COOL FURTHER TODAY AS A WEAK UPPER LEVEL TROUGH MAKES ITS WAY INTO OUR AREA. THE TROUGH WILL PASS OVER THE REGION FRIDAY, CULMINATING IN THE COOLEST DAY OF THE FORECAST, WITH DAYTIME HIGHS AT OR JUST BELOW SEASONAL NORMALS. SOME INCREASED CLOUDINESS WILL ACCOMPANY THIS TROUGH AS IT APPROACHES AND CROSSES OVER THE AREA, BUT THE ONLY CHANCE FOR PRECIPITATION WILL BE LIGHT DRIZZLE ALONG THE COATS NORTH OF CAPE BLANCO THIS MORNING AS ONSHORE FLOW INCREASES AHEAD OF THE FEATURE. THE COOLNESS WILL BE SHORT LIVED, HOWEVER, AS THE TROUGH EXITS AND THE THERMAL TROUGH REESTABLISHES ITSELF THIS WEEKEND.
THE COOLER AND DRIER CONDITIONS IN THE WAKE OF YESTERDAY'S COLD FRONT WILL PERSIST TODAY AND TOMORROW.
NW FLOW ALOFT CONTINUES AS THE AREA WAITS ONE MORE DAY FOR A STRONG SHORT WAVE TROUGH TO MOVE BY TO THE NORTH AND INCREASE WINDS OVER SE OREGON AND ESPECIALLY SW IDAHO. THIS WILL PUSH A COLD FRONT THROUGH IN THE AFTERNOON. UPPER LEVEL TROUGH WILL SLIDE SOUTHEAST INTO MONTANA FRIDAY AFTERNOON.
MINIMAL CLOUD COVER AND DOWNSLOPE WINDS WILL YIELD WARMER TEMPERATURES TODAY WITH HIGHS CLOSER TO THE SEASONAL NORMS. COULD SEE SOME CONVECTION FORM OFF THE HIGHER TERRAIN THIS AFTERNOON BUT THE POTENTIAL FOR MEASURABLE PRECIPITATION AT ANY ONE LOCATION IS VERY LOW.
311 AM EDT THU AUG 20 2015 WARM AND MUGGY CONDITIONS TONIGHT INTO THURSDAY MORNING WILL GIVE WAY TO A SLOW MOVING COLD FRONT LATER THURSDAY INTO FRIDAY. THIS FRONT WILL BRING WELCOMED RAINFALL TO THE REGION ALONG WITH COOLER MORE SEASONAL TEMPERATURES.
204 AM EDT THU AUG 20 2015 COLD FRONT PUSHES THROUGH TODAY.
357 AM EDT THU AUG 20 2015 LOW PRESSURE AND AN ASSOCIATED COLD FRONT WILL BE SLOW TO APPROACH FROM THE WEST THROUGH TODAY. N/S ORIENTED CDFNT RMNS OVR THE MDATLC CSTL WTRS TO BEGIN THE PERIOD AS AN ANOMALOUS RIDGE ANCHORS OVER ERN CANADA AND THE WRN ATLANTIC. TROUGH TRAVERSES THE UPPER MIDWEST/SOUTH CENTRAL CANADA SUN. REACHING THE GREAT LAKES REGION BEFORE ENCOUNTERING THE ANOMALOUS RIDGE OVER ERN CANADA. ASSOCIATED COLD FRONT LOCATES OVER THE OH VALLEY SUN. A WEAKNESS UNDER THE RIDGE LOCATES OVER THE MID-ATLANTIC REGION SUN WITH A WARM FRONT LIFTING NORTH OF THE REGION. MODEL CONSENSUS PUSHES THE COLD FRONT THRU THE REGION MON AS THE POTENT UPPER WAVE DAMPENS/LIFTS NEWD INTO SE CANADA.
WILL LEAVE THE LOW POPS IN PLACE. AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL BE CENTERED OVER NORTHERN MEXICO. WITH AN UPPER LEVEL TROUGH OF LOW PRESSURE OVER THE NORTHERN ROCKY MOUNTAIN STATES. WITH TEMPERATURES REACHING INTO THE LOW 90S. THERE MAY BE JUST ENOUGH SUBTROPICAL MOISTURE OVER THE MOUNTAINS TO PRODUCE A FEW AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS ACROSS THE HIGH COUNTRY.
324 AM EDT THU AUG 20 2015 A COLD FRONT WILL BRING SHOWERS AND A FEW THUNDERSTORMS TODAY. AS THE PARENT LOW/S ASSOCIATED COLD FRONT CROSSES THE UPPER OHIO VALLEY REGION. THE COLD FRONT IS PROGGED TO QUICKLY EXIT THE REGION LATER THIS AFTERNOON/EARLY EVENING. BROAD UPPER TROUGHING THROUGH THE WEEKEND BRINGING DRY AND LESS HUMID CONDITIONS.
324 AM EDT THU AUG 20 2015 A COLD FRONT WILL BRING SHOWERS AND A FEW THUNDERSTORMS TODAY. AS THE PARENT LOW/S ASSOCIATED COLD FRONT CROSS THE UPPER OHIO VALLEY REGION. THE COLD FRONT IS PROGGED TO QUICKLY EXIT THE REGION LATER THIS AFTERNOON/EARLY EVENING. BROAD UPPER TROUGHING THROUGH THE WEEKEND BRINGING DRY AND LESS HUMID CONDITIONS.
THIS WILL RESULT IN THE LOW LEVEL FLOW BECOMING SOUTHERLY ACROSS OUR AREA. AND BRING A RETURN TO WARMER TEMPERATURES BY THIS AFTERNOON. WEAK INSTABILITY ALSO BEGINS TO DEVELOP THROUGH THE LOWER MO RIVER VALLEY INTO NORTHWESTERN IOWA OVERNIGHT.
335 AM EDT THU AUG 20 2015 A COLD FRONT ACROSS OHIO WILL MOVE EAST BY EARLY AFTERNOON. HIGH PRESSURE WILL THEN DRIFT NORTH INTO THE AREA AND DOMINATE THE WEATHER FOR THE WEEKEND. A COLD FRONT.
TEMPERATURES WILL BE SEVERAL DEGREES WARMER THAN YESTERDAYS NEAR RECORD COOL LEVELS BUT STILL WELL BELOW SEASONAL NORMALS.
MID-LEVEL SHORT WAVE ROTATING AROUND UPPER LOW PRODUCING SCATTERED -SHRA AND SPRINKLES. -SHRA WL CONTINUE TO DIMINISH THROUGH 12Z BUT SOME LINGERING SPRINKLES ARE POSSIBLE AS LOW PRESSURE TROF LINGERS OVER AREA THRU MID-MRNG. THERMAL TROF AND WEAK COLD AIR ADVECTION WL CONTINUE TO BRING STRATUS TO MOST OF THE AREA THRU THE MORNING. HOWEVER UPPER LOW WL BE WEAKENING AND SHIFTING NORTHEAST THRU THE DAY IN RESPONSE TO UPSTREAM WEAK KICKER SYSTEM CROSSING SRN CANADA. WITH THERMAL TROF SHIFTING EAST AND THINNING COLUMN MOISTURE.
WITH A TROF EXTENDING SOUTH TOWARD THE NW GULF COAST. ONE MORE DAY OF UNSETTLED WEATHER AS THE CNTL CONUS TROF LINGERS OVER THE AREA AND A WEAK COLD FRONT SAGS SOUTH ACRS LA AND ERN TX. THE UPR TROF WILL SLOWLY LIFT OUT TO THE NE BY FRIDAY WITH FLAT RIDGING BUILDING IN FM THE EAST OVER THE WEEKEND. PUSHING THE UPR RIDGE WEST.
A COLD FRONT WILL PUSH THROUGH THE REGION TONIGHT AND EARLY FRIDAY. HIGH PRESSURE WILL DOMINATE OVER THE WEEKEND.
641 AM EDT THU AUG 20 2015 HIGH PRESSURE OFF THE COAST WILL KEEP SOUTHERLY FLOW AND A WARM AND HUMID AIR MASS OVER NEW ENGLAND FOR THE NEXT SEVERAL DAYS. AN UPPER LEVEL TROUGH OF LOW PRESSURE MOVING THROUGH CANADA WILL SEND A FRONT TOWARD NEW ENGLAND ON FRIDAY.
358 AM CDT THU AUG 20 2015 (Today and Tonight) The cold front has moved south of our area this morning. For today, looks like cooler temperatures will be the main weather story.
649 PM CDT TUE MAY 19 2015 VERY QUIET WEATHER CONDITIONS IN THE SHORT TERM WITH HIGH PRESSURE IN PLACE ACROSS THE UPPER MIDWEST. SLIGHTLY WARMER NEAR LAKE SUPERIOR. HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WESTERN GREAT LAKES AREA ON WEDNESDAY WITH MOSTLY SUNNY SKIES IN THE MORNING. THE MOSTLY SUNNY SKIES WILL COMBINE WITH A WARMING AIR MASS TO PRODUCE HIGHS INTO THE LOWER TO MID 60S ON WED.
SPRAWLING HIGH PRESSURE WILL BE OVER THE REGION TONIGHT RESULTING IN LIGHT WINDS AND CLEAR SKY. THE AIRMASS OVER THE AREA IS WARMER THAN LAST NIGHT. THAT SAID THE DRIEST AIRMASS CURRENTLY IS OVER NORTH CENTRAL MN AND THIS AREA TENDS TO BE COLDEST ON THE SECOND NIGHT OF THE HIGH. REST OF THE FORECAST AREA TO BE A BIT WARMER WITH LOWS MOSTLY IN THE 33 TO 36 RANGE. HIGH PRESSURE AND LIGHT WINDS TO BE OVER THE AREA WEDNESDAY.
WITH THE HIGH VALUES OF PRECIPITABLE WATER EXPECTED.