Aikyam-Lab/Synoptic-Bench huggingface dataset:
845 PM MST WED FEB 24 2016 HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER FEATURE THROUGH THE WEEKEND. STRONG HIGH PRESSURE RIDGING THAT IS GRADUALLY BUILDING EASTWARD INTO THE DESERT SOUTHWEST. THE SWRN CONUS REMAINS SITUATED IN A NWLY FLOW REGIME LOCATED DOWNSTREAM OF ELONGATED RIDGING EXTENDED ALONG THE NORTH AMERICAN WEST COAST. THOUGH SOME MEASURE OF COOLER AIR ADVECTING SOUTH WAS STILL EVIDENT IN OBJECTIVE ANALYSIS. DESPITE THE RECENT COOLER CONDITIONS. HOWEVER A STOUT INVERSION AND ELEVATED MIXED LAYER AROUND THE H7 LAYER HAS TRAPPED MUCH COOLER AIR IN THE SFC-H8 LAYER. THIS BOUNDARY LAYER INVERSION WILL EVENTUALLY BE FULLY MIXED AWAY IN THE NEXT COUPLE DAYS AS THE RIDGE AXIS TRANSLATES INLAND RESULTING IN A RESUMPTION OF MUCH WARMER THAN AVERAGE CONDITIONS.
1036 PM EST WED FEB 24 2016 A COLD FRONT IS EXPECTED TO CROSS THE MID-ATLANTIC TONIGHT. HIGH PRESSURE BUILDS IN FOR THE END OF THE WEEK. TIGHT PRES GRADIENT WILL PERSIST THROUGH FRI WITH BREEZY AND COOLER CONDITIONS. WIND ADVISORY LEVEL WINDS ARE ALSO MARGINAL FOR THE HIGHER ELEVS AND WILL NOT ISSUE ANY ADVZY ATTM. SUB-TROPICAL RIDGING PERSISTING OVER THE SOUTHEASTERN U. WILL BE FIGHTING LOWERING HEIGHTS APPROACHING FROM THE NORTH AS RIDGING PERSISTS OVER WESTERN NOAM. HIGH PRESSURE NOSING OVER THE AREA SHOULD KEEP WINDS BELOW SCA LEVELS OVER THE WEEKEND.
TEMP TIME HEIGHT PROFILES ACROSS THE PLATEAU SHOWS A STEADY TO SLIGHTLY DECREASING FREEZING LEVEL OVERNIGHT. THE WARM GROUND AND ABOVE FREEZING TEMPS MAY DELAY ANY ACCUM UNTIL AFTER THE ADVISORY STARTS. AS AN UPPER LEVEL LOW CONTINUES TO MOVE NEWD ACROSS THE ERN OHIO RIVER VALLEY REGION.
THE BACK EDGE OF THE LOW CLOUDS STILL WEST OF JACKSON MISSISSIPPI. MORE SUNSHINE ON THURSDAY AS DRIER AND SLIGHTLY WARMER AIR ADVECTS IN FROM TEXAS. ANOTHER PUSH OF COLDER AIR WILL ARRIVE THURSDAY NIGHT AS A SHORT WAVE TROF TRACKS ACROSS THE SOUTHEAST STATES.
710 PM EST WED FEB 24 2016 A STRONG LOW PRESSURE SYSTEM OVER THE AREA WILL TRACK NORTHEAST THIS EVENING. COLDER AIR AND GUSTY WINDS BEHIND THE LOW WILL RESULT IN SNOW SHOWERS INTO THURSDAY NIGHT.
Lows tonight will be in the lower 40s inland and upper 40s near the coast.
Tomorrow, we will see 850mb temperatures some 4 to 7C degrees cooler than today, resulting in about a 10 to 12F reduction in temperatures at the surface.
NW WINDS OF 10 TO 20 KTS ATTM WILL RELAX A GREAT DEAL VERY SOON AND GENERALLY WITH HIGH PRESSURE AFTER SUNSET. ANOTHER COLD FRONT WILL MOVE INTO THE FOUR STATE REGION EARLY ON THURSDAY AND QUICKLY MOVE ACROSS THE AREA.
426 PM MST WED FEB 24 2016 BREEZY CONDITIONS PREVAIL TODAY IN THE WAKE OF THE COLD FRONT AND AS THE UPPER JET SLIDES JUST EAST OF OUR AREA. CHEYENNE RIDGE AND SOUTH LARAMIE RANGE. HUMIDITIES ARE IN THE LOW TO MID 20S ACROSS MUCH OF THE PLAINS WITH THE LOWEST READINGS IN THE SOUTHERN PANHANDLE WHERE WINDS ARE GUSTY AS WELL. THE UPPER LEVEL RIDGE WILL MAINTAIN HOLD OF THE REGION THROUGH THE END OF THE WEEK WITH HEIGHTS RISING OVERHEAD.
944 PM EST WED FEB 24 2016 SURFACE COLD FRONT HAS MOVED OUT OF THE FORECAST AREA THIS EVENING BRINGING AN END TO THE PRECIPITATION. COOLER DRIER AIR HAS BEGUN TO FILTER INTO THE REGION. ROBUST WEST TO NORTHWEST WINDS WILL CONTINUE ACROSS THE COASTAL WATERS OVERNIGHT INTO THURSDAY BETWEEN DEEP LOW PRESSURE MOVING ACROSS THE NORTHEAST U. AND HIGH PRESSURE OVER THE WESTERN GULF OF MEXICO.
THE HIGHER ELEVATIONS WILL SEE AREAS OF LIGHT SNOW WITH UP TO 1 INCH OF ACCU IN THE NORTHEAST MOUNTAINS. AND UP TO 1/2 INCH ON LOOKOUT MOUNTAIN RIDGE. STRONG UPPER LOW WILL MOVE OVERHEAD TONIGHT. AT THE HIGHEST ELEVATIONS ACROSS NORTHEAST GA.
DRY WEATHER WILL CONTINUE FOR THE NEXT SEVERAL DAYS AS A RIDGE OF HIGH PRESSURE DOMINATES THE PATTERN. A DRY UPPER RIDGE IS SLOWLY BUILDING INTO CA TODAY. THE STRENGTHENING RIDGE RESULTING IN INCREASED OFFSHORE PRESSURE GRADIENTS WHICH PRODUCED LOCALLY STRONG WIND GUSTS IN THE GRAPEVINE AREA ALONG I-5 EARLY THIS MORNING. THE STRENGTHENING RIDGE HAS RESULTING IN A WARMING TREND ACROSS OUR AREA TODAY. THE 12Z WRF IS INDICATING THE UPPER RIDGE WILL AMPLIFY TONIGHT AND THURSDAY OVER CA.
HIGH PRESSURE WILL BE BUILDING INTO THE REGION TONIGHT AND THURSDAY. AS THE MID/UPPER LEVEL TROF AXIS SLIPS EAST OF THE REGION. COOLER TONIGHT WITH LOWS IN THE MID TO UPPER 30S EXCEPT AROUND 40 AT THE COAST. HIGHS ON THURSDAY IN THE UPPER 50S INLAND AND THE LOWER 60S FARTHER SOUTH INTERIOR ZONES AND ALONG THE COAST.
AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL DOMINATE THE PACIFIC NORTHWEST THROUGH THURSDAY NIGHT. DRY WEATHER WILL PREVAIL WITH WARMER HIGH TEMPERATURES ON THURSDAY.
535 PM CST WED FEB 24 2016 FORECAST AREA WAS BETWEEN STRONG LOW PRESSURE MOVING NORTHWARD THROUGH THE OHIO RIVER VALLEY REGION AND A WEAKER TROUGH OF LOW PRESSURE MOVING SOUTHEAST THROUGH THE DAKOTAS. RADAR MOSAIC SHOWING NORTHWEST PERIPHERY OF THE SNOW ASSOCIATED WITH THE LOW ACROSS FAR SOUTHEAST WI/EASTERN IL. CLOUDS LOOK TO LINGER ACROSS THE AREA OVERNIGHT AS LOWER LEVEL MOISTURE IS TRAPPED UNDER NARROW W-E MID-LEVEL RIDGE MOVING IN FROM THE NORTH. PLAN ON OVERNIGHT LOWS IN THE LOWER TO MIDDLE 20S. RATHER BRISK NORTHERLY WIND FOR THURSDAY IN TIGHT PRESSURE GRADIENT BETWEEN DEEP LOW PRESSURE OVER THE EASTERN GREAT LAKES AND HIGH PRESSURE BUILDING IN FROM THE PLAINS. INCREASING MID/HIGH LEVEL CLOUDS EXPECTED FOR THURSDAY NIGHT AHEAD OF A WAVE OF LOW PRESSURE AND WARM FRONT MOVING THROUGH SOUTHERN CANADA/NORTHERN MN.
306 PM CDT WED AUG 26 2015 UPPER LEVEL HIGH IS CENTERED JUST WEST OF THE CWFA THIS AFTERNOON WITH A BIT OF WOBBLING PROGGED OVER THE NEXT 24 HOURS. ESPECIALLY GIVEN THE HIGH CLOUDINESS OVERSPREADING THE REGION.
311 PM CDT WED AUG 26 2015 On Wednesday afternoon, an upper ridge remainder centered over eastern New Mexico with weak waves of energy and mid level moisture running around the ridge. Of particular interest in the coming days is a stronger short wave trough currently over Utah that is forecast to move east and eventually across Nebraska with some forcing into Kansas. Condensation pressure gradients are large, but the focused area for ascent as the low level jet veers into the theta-e axis during the early morning hours. Do expect some destabilization especially in central KS by mid afternoon in advance of the primary incoming short wave trough and cold front.
Today will be another warm, smoky day across most of western Montana and north central Idaho with a ridge of high pressure firmly in place. Temperatures will be around 5 degrees above normal, but valleys with thick smoke, such as the Selway, Lochsa, and Salmon river drainages, will be cooler due to decreased sunlight through the smoke.
227 PM EDT WED AUG 26 2015 HYDRO ONE MORE COOL AND OVERCAST DAY WITH SCATTERED LIGHT SHOWERS CAN BE EXPECTED AS A LARGE SLOW MOVING AREA OF LOW PRESSURE CONTINUES TO IMPACT THE GREAT LAKES REGION. THE LOW WILL FINALLY DEPART TONIGHT AND HIGH PRESSURE WILL MOVE IN FOR THURSDAY. THE BEST CHANCE OF ANY MEASURABLE PRECIP WILL BE THIS MORNING AS FINAL VORTICITY MAXIMA DROP THROUGH THE BACK SIDE OF THE DEPARTING UPPER TROUGH. SUBSIDENCE UNDER THE RIDGE MAY OFFSET THIS SO WILL REMAIN OPTIMISTIC FOR NOW.
226 PM MDT WED AUG 26 2015 WV IMAGERY AND RAP UPPER LEVEL ANALYSIS SHOWS RIDGE IN PLACE ACROSS THE PLAINS WITH 596 DM CENTER AXIS EXTENDING NORTH OVER OUR CWA. UPPER LEVEL TROUGH WILL ROTATE AROUND THE NORTH SIDE OF THE RIDGE AND DEEPEN AS IT TRACKS ACROSS THE NORTHERN PLAINS. GFS/NAM BOTH SHOW THE BEST PRECIP SIGNAL IN OUR EAST/SOUTHEAST ALONG PRE FRONTAL TROUGH.
WILL BRING COOLER TEMPERATURES OVER THE NEXT FEW DAYS. OTHERWISE LOOKING AT A FAIR WEATHER PATTERN THROUGH THE WEEK AS AREA REMAINS IN A DRY NORTHERLY FLOW THROUGH THE COLUMN BETWEEN AN AMPLIFIED RIDGE OVER THE MID/WEST CONUS. AND DEEP TROFFING TO THE EAST. MODERATE NORTH WINDS BEHIND A COLD FRONT WILL LINGER THROUGH TODAY AS DRIER AIR MOVES OVER VERY WARM GULF WATERS.
MIN TEMPS ARE EXPECTED TO BE IN THE LOWER 50S DUE TO THE CLEARING SKIES EXCEPT A LITTLE WARMER IN THE MILWAUKEE AREA.
RIDGING CENTERED ALONG THE NM/TX BORDER REACHED TO THE CANADAIN PRAIRIES. AND A LOW ON THE EAST SIDE OF JAMES BAY CANADA TROUGHED DOWN TO THE NORTHEAST GULF OF MEXICO. SURFACE - HIGH PRESSURE SPRAWLED FROM THE UPPER GREAT LAKES TO THE TX/LA COASTAL PLAINS. THE SURFACE REFLECTION OF THE JAMES BAY UPPER LOW TRAILED A FRONTAL BOUNDARY THAT ARCED ACROSS NEW ENGLAND THEN ALONG THE EASTERN SEABOARD AND CONTINUED ACROSS NORTH FL INTO THE GULF OF MEXICO. ATLANTIC HIGH PRESSURE RIDGED WEST. THE JAMES BAY UPPER LOW MEANDERS EAST ACROSS QUEBEC. WITH THE LONG WAVE TROUGH CONTINUING DOWN INTO THE GULF OF MEXICO. WITH THE LOWER VALUES ACROSS THE FAR NORTH. THE LOW LEVEL FLOW OF SOUTHWESTERLY TO WEST AND ENHANCED BY AFTERNOON SEA BREEZES OF TODAY WILL GRADUALLY BECOME MORE SOUTHERLY.
148 PM EDT WED AUG 26 2015 THE LAST IN A SERIES OF UPPER LEVEL TROUGHS WILL MOVE ACROSS THE REGION TODAY.
236 PM CDT WED AUG 26 2015 HIGH PRESSURE WILL REMAIN IN PLACE OVER THE MID SOUTH TONIGHT AND SLOWLY MOVE EAST THROUGH THE END OF THE WEEK.
PER RIDGING INFLUENCES SFC/ALOFT. HIGH PRESSURE CONTINUES TO BUILD IN FROM THE NW, KEEPING MIDDLE TENNESSEE DRY AND MILD. TODAY WILL PRETTY MUCH BE A CARBON COPY OF YESTERDAY, WITH WIDESPREAD SUNSHINE AND AFTERNOON HIGHS RANGING FROM THE MID 70S ALONG THE CUMBERLAND PLATEAU TO THE LOWER 80S MOST OTHER AREAS. OUR FRIENDLY EASTERN UPPER TROUGH WILL CONTINUE TO GIVE US SOME NICE COOLER-THAN-NORMAL TEMPS FOR ONE MORE NIGHT, WITH LOWS BY SUNRISE THURSDAY IN THE 50S ONCE AGAIN MOST AREAS. A GRADUAL WARM-UP BEGINS THURSDAY AFTERNOON, AS UPPER TROUGH PULLS EAST AND DAMPENS OUT, AND HIGH PRESSURE RIDGE STARTS TO BUILD IN FROM THE SOUTHERN PLAINS AND LOWER MISSISSIPPI VALLEY.
338 PM CDT WED AUG 26 2015 500 MB UPPER RIDGE BUILDING FROM NEW MEXICO INTO ERN WYOMING. SEVERAL SHORT WAVES SEEN MOVING ON TOP OF UPPER RIDGE INTO WRN/CNTRL ND AND SOUTH DAKOTA TODAY. WARMER THAN THE LAST FEW NIGHTS AS SOUTHERLY WINDS HOLD UP ENOUGH FOR MORE MIXING. MAIN SHORT WAVE WILL MOVE EAST AND TEMPORARILY SQUASH THE RIDGE AND MOVE THRU SRN SD INTO SRN MN/NRN IA LATER THURSDAY AFTERNOON AND NIGHT. A FEW DEGREES WARMER ON THURSDAY AS WELL. OTHERWISE GETTING WARMER STILL AS UPPER AIR RIDGE BEINGS TO BUILD NORTHWARD.
442 PM EDT WED AUG 26 2015 AN UNSEASONABLY STRONG UPPER TROUGH WILL DOMINATE THE WEATHER PATTERN TODAY THROUGH THURSDAY.
321 PM EDT WED AUG 26 2015 A LARGE AREA OF HIGH PRESSURE OVER THE MIDDLE OF THE COUNTRY WILL BUILD INTO THE REGION THROUGH THE UPCOMING WEEKEND.
1242 PM CDT WED AUG 26 2015 A LARGE MID/UPPER LEVEL RIDGE EXTENDS ACROSS THE GREAT PLAINS WITH THE RIDGE AXIS EXTENDING FROM NORTHERN MEXICO INTO WESTERN MONTANA. HIGH PRESSURE RIDGE AXIS EXTENDS FROM WESTERN ONTARIO THROUGH CENTRAL MINNESOTA.
CONVECTION HAS ALREADY BEEN QUITE PLENTIFUL OVER BOTH THE GULF AND ATLANTIC WATERS THIS MORNING WITH WEAK CONVERGENCE BAND TRACING OUT LOW LEVEL RIDGE AXIS ACROSS FL STRAITS AND FAR S FLORIDA. A LARGE AMPLITUDE UPPER LEVEL TROUGH ACROSS THE EASTERN CONUS AND INTO THE CENTRAL GULF WITH DEEP TROPICAL MOISTURE ACROSS THE FLORIDA STRAITS AND INTO THE NORTHWEST BAHAMAS. THE SURFACE TO LOW LEVEL SOUTHERLY WINDS WILL ADVECT IN DEEPER TROPICAL MOISTURE INTO THE REGION TODAY WHILE THE UPPER LEVEL TROUGH CONTINUES TO DEEPEN INTO THE GULF WITH SOUTH FLORIDA EAST OF THE TROUGH AXIS. WITH THE AXIS OF THE UPPER LEVEL LOW STILL REMAINING IN THE NORTHERN TO CENTRAL GULF AND SOUTHERLY FLOW CONTINUING TO BRING TROPICAL MOISTURE INTO THE REGION. THURSDAY'S MID-LEVEL TEMPERATURES ARE FORECAST TO REMAIN COOLER THAN SEASONAL NORMS.
TEMPERATURES WILL REMAIN NEAR TO SLIGHTLY ABOVE NORMAL AS THE UPPER-LEVEL RIDGE LINGERS OVER THE REGION THROUGH MUCH OF THE WEEK. COOLER WEATHER RETURNS FOR THE WEEKEND WITH THE ARRIVAL OF A LOW PRESSURE SYSTEM. A TROUGH ALONG THE COAST AND A RIDGE OVER THE SW WILL PROVIDE A SW FLOW ALOFT KEEPING ANY STORM DEVELOPMENT ALONG AND EAST OF THE SIERRA.
151 PM EDT WED AUG 26 2015 AVIATION ONE MORE COOL AND OVERCAST DAY WITH SCATTERED LIGHT SHOWERS CAN BE EXPECTED AS A LARGE SLOW MOVING AREA OF LOW PRESSURE CONTINUES TO IMPACT THE GREAT LAKES REGION. THE LOW WILL FINALLY DEPART TONIGHT AND HIGH PRESSURE WILL MOVE IN FOR THURSDAY. THE BEST CHANCE OF ANY MEASURABLE PRECIP WILL BE THIS MORNING AS FINAL VORTICITY MAXIMA DROP THROUGH THE BACK SIDE OF THE DEPARTING UPPER TROUGH. SUBSIDENCE UNDER THE RIDGE MAY OFFSET THIS SO WILL REMAIN OPTIMISTIC FOR NOW.
UPPER AIR ANALYSIS PLACED A LARGE H5 RIDGE ACROSS THE CENTRAL AND SOUTHWEST UNITED STATES WITH A TROUGH OFF THE NORTHWEST COAST AND ANOTHER IN THE EASTERN CONUS. THE SHORT TERM MODELS ARE IN GENERAL AGREEMENT THAT A H5 WAVE WILL PIVOT AROUND THE RIDGE AND MOVE ACROSS WYOMING INTO SOUTH DAKOTA. A FLATTENING UPPER LEVEL RIDGE.
111 PM MDT WED AUG 26 2015 WV IMAGERY AND RAP UPPER LEVEL ANALYSIS SHOWS RIDGE IN PLACE ACROSS THE PLAINS WITH 596 DM CENTER AXIS EXTENDING NORTH OVER OUR CWA. UPPER LEVEL TROUGH WILL ROTATE AROUND THE NORTH SIDE OF THE RIDGE AND DEEPEN AS IT TRACKS ACROSS THE NORTHERN PLAINS. GFS/NAM BOTH SHOW THE BEST PRECIP SIGNAL IN OUR EAST/SOUTHEAST ALONG PRE FRONTAL TROUGH.
THE WEATHER THE NEXT 3 DAYS LOOKS QUIET AS HIGH PRESSURE DOMINATES AND KEEPS SKIES CLEAR TO PARTLY CLOUDY WITH LIGHT WINDS - WARM AFTERNOON AND MILD NIGHTS.
UPPER LEVEL LOW CONTINUES TO SEND CLOUDS INTO THE OHIO RIVER VALLEY AND CENTRAL APPALACHIANS. THIS LOW WILL GRADUALLY DRIFT AWAY TONIGHT. UPPER RIDGING WILL BUILD OVER THE OHIO VALLEY THIS PERIOD. MOST CONVECTION SHOULD BE SUPPRESSED BY DOMINANT RIDGING.
AS STRONG HIGH PRESSURE OVER THE MIDWEST STATES GRADUALLY MOVES EWD. AFTERNOON HIGHS ARE ONLY XPCTED TO CLIMB INTO THE LOWER 80S FOR MOST AREAS UNDER PREDOM SUNNY SKIES.
350 PM EDT WED AUG 26 2015 AN UNSEASONABLY STRONG UPPER TROUGH WILL DOMINATE THE WEATHER PATTERN TODAY THROUGH THURSDAY.
/ISSUED 1030 AM CDT WED AUG 26 2015/ S-SE SFC WINDS ACROSS THE AREA HAS RESULTED IN WARMER.
458 PM EDT WED AUG 26 2015 HIGH PRESSURE WILL BUILD AND END THE SPARSE SHOWER CHANCES AND COOL WEATHER FOR THE CLOSE OF THE WEEK. THE TROUGH AXIS CONTINUES TO DIG OVER THE AREA KEEPING IN CLOUDS AND THE RISK FOR SHOWERS. THE CLOSED UPPER LOW.
340 PM EDT WED AUG 26 2015 HIGH PRESSURE NUDGES INTO THE REGION TONIGHT. PUSHING A COLD FRONT OFF THE CAROLINA COAST TONIGHT INTO THURSDAY. WEAK HIGH PRESSURE WILL BUILD NORTH OF THE AREA THROUGH THE END OF THE WEEK. AN UPR-LEVEL TROF IS SITUATED OVER SE CANADA. RESIDUAL TROUGH ALOFT WILL LINGER GENERALLY FM THE OH VLY TO THE GULF CST STATES.
A LOW PRESSURE SYSTEM WILL SLOWLY TRANSLATE NORTHEAST OF THE AREA TONIGHT. HIGH PRESSURE WILL RETURN FOR THE LATTER HALF OF THE WEEK INTO THE UPCOMING WEEKEND. THE ASSOCIATED TROUGH AXIS EXTENDS SOUTH ROUGHLY FROM KSLC TO KPUC TO KPGA AND IS SLOWLY TRANSLATING EAST-NORTHEAST AS WELL. CONTINUED NORTHEAST PROGRESSION OF THE LOW AND ITS AXIS WILL ALLOW FOR A NET DECREASING TREND IN COVERAGE THIS EVENING AND OVERNIGHT FOR ALL AREAS OUTSIDE OF THE EAST. OVER THE NEXT 24 HOURS THE MID LEVELS WILL BEGIN TO DRY AS HIGH PRESSURE REBOUNDS AND EXPANDS NORTHEAST WITH ITS AXIS STRETCHING FROM THE DESERT SOUTHWEST INTO CENTRAL NEVADA. LACK OF SUBSTANTIAL BOUNDARY LAYER FLOW WILL LIMIT MUCH DRYING OF THE LOW LEVELS HOWEVER. UPDRAFTS WILL HAVE TO OVERCOME INCREASED LARGE SCALE SUBSIDENCE DUE TO THE BUILDING RIDGE.
UPPER LEVEL LOW CONTINUES TO SEND CLOUDS INTO THE OHIO RIVER VALLEY AND CENTRAL APPALACHIANS. THIS LOW WILL GRADUALLY DRIFT AWAY TONIGHT.
135 PM EDT WED AUG 26 2015 HIGH PRESSURE WILL MOVE PROVIDE DRY WEATHER INTO THURSDAY. AS THE HIGH SHIFTS TO THE MID ATLANTIC. HIGH PRESSURE WILL BUILD EAST ACROSS THE REGION TODAY AND TONIGHT. SEEMS OVERDONE AND FORECAST WILL KEEP IT DRY WITH STRONG HIGH PRESSURE BUILDING IN FROM THE GREAT LAKES. TEMPS RANGING FROM THE LOWER TO MID 70S ACROSS THE MOUNTAINS.
213 PM EDT WED AUG 26 2015 HIGH PRESSURE NUDGES INTO THE REGION TODAY. PUSHING THE COLD FRONT OFFSHORE TONIGHT INTO THURSDAY. WEAK HIGH PRESSURE WILL BUILD NORTH OF THE AREA FOR THE LATTER HALF OF THE WEEK. HAVE CONTINUED ISO TO SCT SHRA WORDING ACROSS THE FAR SE CWA FOR THIS MORNING, AS WEAK WAVE OF LOW PRESSURE PUSHES ALONG THE FRONT EARLY TODAY. COOL HIGH PRESSURE OVER THE NORTHERN AND CENTRAL PLAINS BUILDS EAST, ALLOWING FOR HIGHS IN THE LOW TO MID 80S UNDER A PARTLY SUNNY SKY.
HIGH PRESSURE CONTINUES TO SPRAWL DOWN THE MISSISSIPPI VALLEY INTO HANGING ONTO 1022 MB IN N MO. THE UPPER RIDGE AXIS IS OVER THE ROCKIES LIFTING INTO CANADA AND THE DEEPENING TROUGH IS EASING UNDER THE UPPER RIDGE OVER THE TEXAS COASTAL BEND.
THE UPPER TROUGH EXTENDING FROM THE EASTERN GREAT LAKES REGION TO THE FLORIDA GULF COAST WILL TRANSLATE EAST. WEAK EASTERLY LOW LEVEL FLOW ALONG THE SMOKYS COULD PRODUCE AN AFTERNOON CHANCE TO SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE HIGHEST ELEVATIONS OF E TN AND PERHAPS SW NC.
256 PM EDT WED AUG 26 2015 NORTHWEST FLOW WILL KEEP TEMPERATURES COOLER THAN NORMAL OVER THE REGION FOR THE NEXT COUPLE OF DAYS. THIS COOLER AIR WILL ALSO ESPECIALLY IN THE LEE OF LAKE ONTARIO.
430 PM EDT WED AUG 26 2015 A WEAK COLD FRONT WILL SLOWLY MOVE OFF OF THE COAST TONIGHT.
HIGH PRESSURE SHIFTING TO THE SOUTHEAST OF THE REGION IS BEGINNING TO BRING IN SOME DRIER CONDITIONS FROM THE WEST.
310 PM MDT WED AUG 26 2015 AN UPPER TROF WILL CONTINUE MOVING NORTHEASTWARD OVR UT AND WRN CO INTO THIS EVENING. BUT BY MID TO LATE MORNING AS THE TROF MOVES EASTWARD. IN THE AFTERNOON AS THE TROF MOVES EASTWARD. THE MAIN PLAYERS WILL BE THE WEAKENING RIDGE OVER THE SW AND SC U. AND AN ADVANCING TROUGH OVER THE PACNW. AFTER OUR CURRENT TROUGH MOVES INTO THE MISSISSIPPI VALLEY LATE THU INTO FRI MORNING.
A few scattered thunderstorms possible for the higher terrain areas, but expected to stay away from all terminals. /issued 315 AM CDT WED AUG 26 2015/ Looks like a couple of quiet weather days through Thursday as an upper level ridge of high pressure dominates.
138 PM EDT WED AUG 26 2015 SPRINKLES TO LIGHT SHOWERS ARE POSSIBLE TODAY IN NORTHERN INDIANA SOUTHERN MICHIGAN AND NORTHWESTERN OHIO AS A LOW STILL ROTATES IN CANADA AND HIGH PRESSURE IS TO THE NORTHWEST. THIS HIGH WILL MOVE INTO THE REGION TONIGHT CLEARING UP THE SKIES. LOWS TONIGHT WILL BE ON THE COOL SIDE IN THE LOWER 50S. HIGHLY AMPLIFIED MID/UPR FLOW ACROSS CONUS AT PRESENT CHARACTERIZED BY TX PANHANDLE TO ERN MT RIDGE BETWIXT SHARP/SLOWLY EXITING TROF ACROSS SERN CANADA INTO LOWER GREAT LAKES AND 140W CENTERED TROF. 925-8H RIDGE WELL UPSTREAM OVER MISSOURI RIVER VALLEY TO MAKE ONLY SLIGHT EWD PROGRESS TODAY. LOW LEVEL THERMAL TROUGHING WILL HOLD FOR ONE MORE DAY ON THURSDAY. AS UPPER LEVEL TROUGHING BEGINS TO DEPART THE OHIO VALLEY.
559 PM EDT WED AUG 26 2015 A LARGE AREA OF HIGH PRESSURE OVER THE MIDDLE OF THE COUNTRY WILL BUILD INTO THE REGION THROUGH THE UPCOMING WEEKEND.
232 PM EDT WED AUG 26 2015 HIGH PRESSURE WILL BUILD AND END THE SPARSE SHOWER CHANCES AND COOL WEATHER FOR THE CLOSE OF THE WEEK. THE TROUGH AXIS CONTINUES TO DIG OVER THE AREA KEEPING IN CLOUDS AND THE RISK FOR SHOWERS. THE CLOSED UPPER LOW.
456 PM EDT WED AUG 26 2015 A LARGE AREA OF HIGH PRESSURE OVER THE MIDDLE OF THE COUNTRY WILL BUILD INTO THE REGION THROUGH THE UPCOMING WEEKEND.
128 PM EDT WED AUG 26 2015 AN UPPER TROUGH WILL LINGER ACROSS THE AREA TODAY BEFORE MOVING TO THE EAST TONIGHT.
THIS WILL LIKELY RESULT IN SLIGHTLY COOLER AFTERNOON MAX TEMPS. HIGHS IN THE LOW-MID 70S IN THE NORTH AND MID-UPPER 70S IN THE SOUTH LOOKS GOOD BASED ON CURRENT TRENDS. HIGH PRESSURE MOVING FROM THE UPPER MISSISSIPPI VALLEY TO THE EASTERN GREAT LAKES WILL CONTINUE TO PROVIDE US WITH PEACEFUL WEATHER. AS WE BEGIN TO GET ON THE WEST SIDE OF THE HIGH, TEMPERATURES WILL GET A BIT WARMER ON THURSDAY WITH HIGHS AROUND 80.
226 PM CDT WED AUG 26 2015 THE MAIN STORY THIS WEEK IS THE BREAKDOWN OF THE UPPER LEVEL RIDGE.
THE LARGE TROUGH WILL REMAIN IN PLACE ACROSS THE EASTERN PORTIONS OF THE AREA THROUGH THURSDAY. THE RESULTING DEEP LAYER NORTHERLY FLOW PATTERN WILL CONTINUE TO BRING A COOLER AND MUCH DRIER AIRMASS INTO THE REGION. HIGHS WILL BE SLIGHTLY WARMER.
TEMPERATURES SHOULD BE MUCH COOLER. NORTHERLY WINDS SHOULD ALSO HELP KEEP THINGS A LITTLE COOLER. HIGH TEMPERATURES IN THE LOWER TO MID 80S WILL STILL BE POSSIBLE THOUGH. MODELS HAVE THE UPPER RIDGE AXIS WEST OF COLORADO THURSDAY NIGHT.
330 PM EDT WED AUG 26 2015 A VERY SLOW MOVING UPPER LEVEL TROUGH OF LOW PRESSURE WILL CONTINUE TO HEAD TOWARD THE NORTH COUNTRY TONIGHT AND THEN MOVE ACROSS THE AREA ON THURSDAY.
249 PM EDT WED AUG 26 2015 AN UPPER LEVEL TROUGH OF LOW PRESSURE WILL APPROACH TONIGHT AND MOVE OVER THE REGION ON THURSDAY. THE TROUGH WILL LIFT NORTHEAST OF THE AREA THURSDAY NIGHT.
216 PM EDT WED AUG 26 2015 HIGH PRESSURE NUDGES INTO THE REGION TODAY. PUSHING THE COLD FRONT OFFSHORE TONIGHT INTO THURSDAY. WEAK HIGH PRESSURE WILL BUILD NORTH OF THE AREA FOR THE LATTER HALF OF THE WEEK. HAVE CONTINUED ISO TO SCT SHRA WORDING ACROSS THE FAR SE CWA FOR THIS MORNING, AS WEAK WAVE OF LOW PRESSURE PUSHES ALONG THE FRONT EARLY TODAY. COOL HIGH PRESSURE OVER THE NORTHERN AND CENTRAL PLAINS BUILDS EAST, ALLOWING FOR HIGHS IN THE LOW TO MID 80S UNDER A PARTLY SUNNY SKY.
/ISSUED 1038 AM CDT WED AUG 26 2015/ REMOVED THE LOW POPS THAT WERE IN FOR THIS MORNING.
1252 PM CDT WED AUG 26 2015 THE MAJORITY OF THE NEXT 24 HOURS WILL REMAIN FAIRLY QUIET WITH THE CONTINUED PRESENCE OF THE UPPER LEVEL RIDGE BUILDING ALONG THE FRONT RANGE. LOW PRESSURE ALONG THE FRONT RANGE WILL AIDE IN A TIGHTENED PRESSURE GRADIENT AND INCREASED WARM AIR ADVECTION ACROSS THE AREA. HIGH TEMPERATURES SHOULD BE SLIGHTLY WARMER THAN YESTERDAY WITH 80S TO MID 90S FOR FORECAST HIGHS. AS AN UPPER LEVEL DISTURBANCE ROUNDING THE TOP OF THE RIDGE APPROACHES THE CENTRAL PLAINS. WHILE THE NOSE OF THE LOW LEVEL JET REMAINS NORTH OF THE FORECAST AREA. AN UPPER LOW MOVES OVER AND BREAKS DOWN THE RIDGE ACROSS THE AREA ON THURSDAY.
132 PM EDT WED AUG 26 2015 A LARGE AREA OF HIGH PRESSURE OVER THE MID SECTION OF THE COUNTRY WILL BUILD EAST THROUGH THE UPCOMING WEEKEND.
336 PM CDT WED AUG 26 2015 HIGH PRESSURE IS IN CONTROL ACROSS THE FORECAST AREA THIS AFTERNOON PROVIDING MOSTLY SUNNY SKIES BUT TEMPERATURES REMAIN ON THE COOL SIDE FOR THIS TIME OF YEAR. THE HIGH WILL REMAIN IN CONTROL TONIGHT PROVIDING CLEAR SKIES AND LIGHT WINDS. ESPECIALLY ACROSS NORTHERN WISCONSIN WHERE TEMPERATURES WILL FALL INTO THE LOWER 40S. PLAN ON LOWS RANGING FROM THE UPPER 40S ACROSS CENTRAL WISCONSIN TO THE LOWER 50S OVER NORTHEAST IOWA.
On the west side of this 500mb high an upper level trough was positioned near the four corners area. A surface to 850mb trough of low pressure was located over eastern Colorado, and a weak warm front extended from northeast Colorado to north central Oklahoma. This evenings analysis as well as water vapor loops show an upper level ridge centered over the eastern slopes of the Rockies. This disturbance will top the upper ridge and drop southeast through the central plains on Thursday. Subsidence associated with the upper ridge will keep the weather pattern dry across southwest and central kansas through tonight.
142 PM EDT WED AUG 26 2015 NORTHWEST FLOW WILL KEEP TEMPERATURES COOLER THAN NORMAL OVER THE REGION FOR THE NEXT COUPLE OF DAYS. THIS COOLER AIR WILL ALSO ESPECIALLY IN THE LEE OF LAKE ONTARIO.
TROUGH OF LOW PRESSURE EXTENDS ACROSS REGION THIS AFTERNOON FROM NEAR BRUNSWICK SOUTHWEST TO NEAR LAKE CITY. NORTHWEST OF THE TROUGH DRIER AIR HAS ADVECTED IN. THIS TROUGH MAY SINK A LITTLE FURTHER SOUTHEAST TONIGHT. THE TROUGH IS EXPECTED TO MOVE WESTWARD THURSDAY. AS HIGH PRESSURE BUILDS TOWARD THE NORTHEAST. ALONG AND EAST OF THE TROUGH WILL BE IN THE LOWER TO MID 70S. AND TREND TOWARD THE LOWER 90S INLAND.
Lows will reach the lower to mid 60s across most of the region, with lower 70s around Cross City, at the beaches, and in the larger cities.
1220 PM CDT WED AUG 26 2015 MAIN CONCERN IS WITH THE LOWER CLOUD DECK NUDGING SOUTHWARD. DEEP UPPER LOW NORTH OF LAKE ERIE EARLY THIS MORNING CONTINUES TO SLOWLY EDGE AWAY FROM THE MIDWEST. SLIGHTLY COOLER THAN CLIMATOLOGICAL NORMS THROUGH THE END OF THE WEEK, ALBEIT IN A SLIGHT WARMING TREND.
203 PM EDT WED AUG 26 2015 AN UNSEASONABLY STRONG UPPER TROUGH WILL DOMINATE THE WEATHER PATTERN TODAY THROUGH THURSDAY.