Aikyam-Lab/Synoptic-Bench huggingface dataset:
1134 AM EDT FRI SEP 25 2015 MORNING SURFACE ANALYSIS DEPICTS WEAK LOW PRESSURE (1014 MILLIBARS) OVER THE SAVANNAH RIVER IN COASTAL GEORGIA. WITH A TRAILING COASTAL TROUGH OVER OUR WATERS. A LARGE UPPER LEVEL LOW IS SPINNING OVER NORTHWESTERN GEORGIA. WHILE RIDGING CENTERED OVER THE GREATER ANTILLES IS BEGINNING TO BUILD WESTWARD. HIGHS TODAY WILL RANGE FROM THE UPPER 80S OVER NORTH CENTRAL FL TO THE LOWER 80S OVER MOST OF SOUTHEAST GA AND COASTAL NORTHEAST FL. LOW PRESSURE ALONG THE SOUTH CAROLINA COAST WILL MOVE SLOWLY NORTHWARD THROUGH THE WEEKEND. WITH A LINGERING COASTAL TROUGH REMAINING IN PLACE OVER OUR COASTAL WATERS. LOW PRESSURE CURRENTLY OVER THE NORTHWESTERN CARIBBEAN SEA WILL MOVE SLOWLY NORTHWARD OVER THE YUCATAN PENINSULA THIS WEEKEND.
1105 AM EDT FRI SEP 25 2015 APPROACHING LOW PRESSURE WILL INCREASE CLOUDS AND RAIN CHANCES FOR THE WEEKEND. UPPER-LEVEL LOW PRESSURE OVER THE SERN CONUS WILL CONT TO SHUNT MOISTURE OVER THE UPPER OHIO REGION TODAY. TODAYS IMPACTS WILL ONLY BE OF A CIRROSTRATUS INCREASE OUTSIDE OF THE RIDGES. THE MOISTURE FLOW IS PROJECTED TO CONTINUE THROUGH SATURDAY AS THE LOW DIGS WEAK TOWARD THE MID OHIO VALLEY. BUT STABILITY AND DOWNSLOPE FLOW TO THE WEST OF THE RIDGES ARE PROGGED TO SUPPORT A GENERAL LIGHT RAIN.
CHATTANOOGA AIRPORT, TN 70 64 76 64 / 50 50 60 40 KNOXVILLE MCGHEE TYSON AIRPORT, TN 73 62 75 62 / 50 50 50 40 OAK RIDGE, TN 71 62 75 62 / 60 50 50 40 TRI CITIES AIRPORT, TN 70 60 74 60 / 70 50 50 40.
/ISSUED 302 AM CDT FRI SEP 25 2015/ THE LONG WAVE PATTERN ACROSS THE CONUS CONSISTS OF A LARGE MID AND UPPER RIDGE WHICH CURRENTLY ARCS ANTICYCLONICALLY FROM COAST TO COAST. A FEW WEAKNESSES IN THE RIDGE ARE CURRENTLY NOTED. AND ANOTHER IN THE FORM OF A BROAD LOW PRESSURE AREA ENTRENCHED ACROSS THE SOUTHEASTERN STATES.
1105 AM EDT FRI SEP 25 2015 AN UPPER LEVEL LOW WILL TRACK FROM GEORGIA INTO THE TENNESSEE VALLEY BEFORE WEAKENING OVER THE WEEKEND. UPPER LOW OVER GEORGIA THIS MORNING WILL MOVE NORTH NORTHWEST TODAY.
1058 AM EDT FRI SEP 25 2015 HIGH PRESSURE WILL CONTINUE TO DOMINATE OUR WEATHER THROUGH THE WEEKEND PRODUCING WARM AND DRY EARLY FALL CONDITIONS.
THIS IS COURTESY OF FORCING NEAR AND WEST OF AN UPPER LEVEL LOW PUSHING NE TOWARDS CHATTANOOGA THIS MORNING. WATER VAPOR IMAGERY SHOWS THIS UPPER LOW HAS BEEN MOVING SLIGHTLY NORTH OF NORTHWEST SO FAR THIS MORNING. BELIEVE THIS STRONGER ISENTROPIC LIFT AND DEEPER MOISTURE NEAR THE LOW WILL PUSH INTO MANY LOCATIONS NEAR I-65 AND NORTHWARD INTO SOUTHERN MIDDLE TN. THE BEST FORCING AND DEEPER MOISTURE WILL REMAIN NEAR THE CENTER OF THE UPPER LOW. THERE HIGH TEMPERATURES MAY REACH THE LOWER 80S.
955 AM EDT FRI SEP 25 2015 NEAR TERM FOR THE REST OF TODAY HAS BEEN UPDATED BELOW AN UPPER LOW OVER THE SOUTHEASTERN U. THE UPPER LOW OVER THE SOUTHEASTERN U.
806 AM EDT FRI SEP 25 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION OVERNIGHT THROUGH SATURDAY.
624 PM CDT WED AUG 26 2015 UPPER LEVEL RIDGE ACROSS THE ROCKIES. WITH A TROUGH ACROSS NEW ENGLAND. CAUSING THE RIDGE TO FLATTEN.
/ISSUED 226 PM CDT WED AUG 26 2015/ THE MAIN STORY THIS WEEK IS THE BREAKDOWN OF THE UPPER LEVEL RIDGE.
808 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 MID-LEVEL TROUGH AXIS IS SET TO MOVE GENERALLY EAST OF THE AREA AROUND 06Z TONIGHT. FRIES THE CLOSED UPPER LOW.
617 PM CDT WED AUG 26 2015 HIGH PRESSURE CONTINUES OVER THE AREA. THE UPPER HIGH IS OVER THE PLAINS AND PROVIDING ARKANSAS WITH A NORTHERLY FLOW.
Models remain consistent with previous runs in weakening an upper level ridge axis tonight and Thursday as an upper level trough, located near the four corners region at 12z Wednesday, moves across the central Rockies. On Thursday the upper level trough will begin to move out into the Central High Plains as a surface cold front and surface lee trough moves into western Kansas.
HIGH PRESSURE WILL RETURN THURSDAY AFTERNOON AND INTO THE UPCOMING WEEKEND. LINGERING MOISTURE ESPECIALLY AT THE LOWER LEVELS WILL CONTINUE TO ALLOW FOR SOME MAINLY TERRAIN- BASED SHOWERS THE NEXT FEW DAYS. WARMER TEMPERATURES WILL RETURN AS WELL.
741 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.
UPPER LEVEL TROUGHINESS REMAINING OVER OUR CWA EARLY IN THE MORNING SHOULD THEN BE EAST OF OUR AREA IN THE AFTERNOON WITH DRIER AIR SPREADING IN UNDER A NORTHWEST FLOW ALOFT. 3-4 DEGREES C WARMER THAN TODAY AT H7. THURSDAY NIGHT SHOULD BE A NOTICEABLY COOLER NIGHT THAN TONIGHT DUE TO COOLER AIRMASS.
916 PM CDT WED AUG 26 2015 LOOKS LIKE DRY PATTERN WILL CONTINUE FOR THE NEXT SEVERAL DAYS WITH UPPER RIDGE REMAINING OUT WEST WHILE UPPER TROUGH STAYS OVER EASTERN U.
Thus, Fri and Fri night will be noticeably warmer.
THIS EVENING THROUGH THURSDAY NIGHT UPPER LEVEL RIDGE PERSISTS ACROSS THE CENTRAL AND SOUTHERN ROCKIES WITH NEXT UPPER WAVE LIFTING THROUGH UTAH. MID AND HIGH CLOUDS ARE TOPPING THE RIDGE INTO THE NORTHERN PLAINS. LOW PRESSURE TROF/BOUNDARY STRETCHES FROM SOUTHEAST MONTANA. WEST OF THE TROF. TO THE EAST OF THE TROF. TO THE UPPER 90S IN PINE RIDGE. 700MB LOW CLOSES OFF EARLY THURSDAY MORNING OVER WESTERN SD WITH COOLER AIR WRAPPING AROUND THE LOW. HIGH TEMPERATURES WILL BE COOLER THAN TODAY.
WITH HIGH PRESSURE OVERHEAD. MODELS DIFFER IN STRENGTH AND MOISTURE AVAILABILITY OF SOUTHERN STREAM WAVE CURRENTLY OVER FOUR CORNERS AREA AND EXPECTED TO RIDE OVER RIDGE INTO ILLINOIS THIS WEEKEND. WATER VAPOR IMAGERY SHOWS WAVE OVER NORTHERN ARIZONA THIS MORNING PUSHING NORTHWARD OVER STRONG ROCKIES RIDGE.
UPPER LEVEL RIDGE SETTLING SOUTHWARD TOWARD THE REGION WILL BRING IN MUCH DRIER AIR THROUGH THE PERIOD. EXPECT COOLER MORNING LOWS IN THE UPPER 60S FOR INLAND COASTAL PLAINS.
TOMORROW MAYBE JUST A LITTLE BIT WARMER BUT OVERALL JUST AS NICE.
9 PM TEMPS AVERAGED AROUND 2 DEGREES WARMER THAN 24 HOURS PREVIOUS. /ISSUED 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.
1027 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.
LOW TEMPERATURES WILL BE SIMILAR TO THE PREVIOUS NIGHT MAY BE A COUPLE OF DEGREES WARMER BUT STILL ABOUT 10 DEGREES BELOW NORMAL FOR LATE AUGUST.
VFR CONDITIONS EXPECTED FOR THE NEXT 24 HOURS AS HIGH PRESSURE PROVIDES SUBSIDENCE ACROSS DEEP SOUTH TEXAS. INFLUENCE OF THE 500 MB RIDGE ACROSS THE WESTERN US WILL SHIFT SLIGHTLY EASTWARD THROUGH THE PERIOD WHILE THE 500 MB TROUGH ACROSS THE EASTERN US AT THE BEGINNING OF THE PERIOD WILL SLIDE NE. THE RIDGE WILL PROVIDE SUBSIDENCE THROUGH THE PERIOD AND A DRIER AIRMASS WILL PUSH IN FROM THE NORTH NORTHEAST. WITH THE LOWER DEWPOINTS. OVERNIGHT TEMPERATURES WILL BE A FEW DEGREES COOLER THAN WE HAVE SEEN RECENTLY WITH LOWS THURSDAY NIGHT IN THE UPPER 60S TO LOWER 70S ACROSS THE INLAND AREAS.
1025 PM EDT WED AUG 26 2015 HIGH PRESSURE BUILDS ACROSS THE REGION THROUGH THURSDAY. RESIDUAL TROUGH ALOFT WILL LINGER GENERALLY FM THE OH VLY TO THE GULF CST STATES.
624 PM CDT WED AUG 26 2015 Water vapor imagery depicts a broad mid-level ridge to the west which is providing northwest flow aloft over the CWA.
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.
THE UPPER-LEVEL RIDGE OF HIGH PRESSURE REMAINS SITUATED ACROSS THE SOUTHERN ROCKIES.
WILL BE A WARMER NIGHT TONIGHT WITH INCREASING MOISTURE FLUX.
Subtle warm front extending from SW NE through far NW AR is likely to be a focus for at least scattered late night convection as upglide strengthens ahead of wave rotating toward the western Plains. t/td trends are noticeably warmer/moister than this time last night which supports the warmer overnight temps.
THIS SYSTEM WILL SLOWLY MOVE NEWD INTO TONIGHT AND THEN GRADUALLY EXIT THURSDAY MORNING AS IT ROUNDS THE RIDGE AND MOVES EAST. THURSDAY AFTERNOON SHOULD SEE NEW STORMS FIRING IN THE WEST WITH COOLER MID LEVEL TEMPERATURES. DEW POINTS STILL IN THE 40S AND WARMER AFTN TEMPS. MODIFIED SOUNDINGS AT KJAC WITH TEMPS IN THE MID 70S AND SFC DEW POINTS IN THE LOWER 40S GENERATE CAPES OVER 700 J/KG.
/ISSUED 624 PM CDT WED AUG 26 2015/ HIGH PRESSURE WILL CONTINUE TO BUILD ACROSS THE AREA ALLOWING VFR TO PREVAIL THROUGH THE FCST PERIOD. 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.
THEN CURVING DOWN TO THE LOWER MISSISSIPPI RIVER VALLEY. ENERGY WAS ROTATING UP AROUND THAT RIDGE INTO THE CENTRAL ROCKIES. THE SEVERE POTENTIAL IS NOT ZERO BUT IS ON THE LOWER END OF THE SPECTRUM.
40 WITH HIGH PRESSURE BUILDING OVERHEAD FROM THE MISSISSIPPI VALLEY. 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.
822 PM EDT WED AUG 26 2015 A WEAK COLD FRONT WILL SLOWLY MOVE OFF OF THE COAST TONIGHT.
Cooler temperatures beginning over the weekend with a chance of showers over the northern portion of the state.
/ISSUED 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.
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.
1046 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.
A LATE AUGUST COLD FRONT HAS DRIVEN INTO THE FL PANHANDLE WITH DEWPOINT READINGS IN THE HIGHER 50S IN SOME SPOTS OF THE NRN FL PANHANDLE ATTM.
BUT WITH THE RELAXING OF THE MID LEVEL TROUGH LATER TONIGHT DO THINK THE CLOUDS WILL EVENTUALLY SCATTER OUT. WILL ALLOW FOR SMALL RIDGE VALLEY TEMPERATURE DIFFERENCE TONIGHT BUT NOT AS LARGE AS IF SKIES WERE CLEAR THROUGH THE NIGHT.
THIS DEVELOPMENT IS ASSOCIATED WITH MONSOONAL MOISTURE AND AN UPPER LEVEL DISTURBANCE ROUNDING THE RIDGE AXIS CURRENTLY OVER US. THIS ACTIVITY SHOULD MOVE EAST OVER NIGHT AS THE ENERGY ALOFT ROTATES AROUND THE RIDGE AXIS. FOR TOMORROW AFTERNOON THE BROAD LONGWAVE TROUGH OVER THE NORTHEASTERN PACIFIC OCEAN WILL SLOWLY SHIFT EAST AND HELP LOWER HEIGHTS OVER THE AREA TOMORROW. THIS WILL ALLOW SOME BETTER LAPSE RATES AND COOLER 700MB TEMPERATURES TO MOVE IN GIVING MOST OF THE AREA A BETTER CHANCE FOR SHOWERS AND THUNDERSTORMS.
754 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.
WILL SEE TRANQUIL WEATHER IN MOST OTHER LOCATIONS OVERNIGHT WITH WARMER TEMPERATURES WITH THE INCREASING WARM ADVECTION AND HIGHER DEWPOINTS.
1130 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.
RADIATIONAL COOLING SHOULD ALLOW TEMPS TO DIP INTO THE LOW-MID 50S IN MOST AREAS. WITH HIGH PRESSURE OVERHEAD. MODELS DIFFER IN STRENGTH AND MOISTURE AVAILABILITY OF SOUTHERN STREAM WAVE CURRENTLY OVER FOUR CORNERS AREA AND EXPECTED TO RIDE OVER RIDGE INTO ILLINOIS THIS WEEKEND. WATER VAPOR IMAGERY SHOWS WAVE OVER NORTHERN ARIZONA THIS MORNING PUSHING NORTHWARD OVER STRONG ROCKIES RIDGE.
AN UPPER TROUGH CONTINUES TO MOVE EAST AS DRY AND COOL AIR REMAINS OVER THE LOCAL AREA. 07 /ISSUED 353 PM CDT WED AUG 26 2015/ COURTESY OF HIGH PRESSURE CENTERED ACROSS THE CENTRAL PLAINS. A NORTHERLY FLOW AROUND THE HIGH CONTINUED A TREND OF DRY AND COOLER THAN NORMAL CONDITIONS FOR MUCH OF THE CENTRAL AND EASTERN CONUS. AS THE NORTHERN STREAM FLOWED NORTH OF THE UPPER RIDGE ACROSS THE SOUTHERN ROCKIES. THIS FLOW GOING INTO TROUGHING ALONG THE EAST COAST WAS KEEPING CLOUDS. TOMORROW SHOULD BE A REPEAT PERFORMANCE WITH HIGHS AGAIN IN THE LOW/MID 80S.
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.
WILDFIRES TOPPING THE RIDGE TO OUR WEST AND DRIFTING ACROSS THE REGION OVERNIGHT. THE LIGHT WINDS AND CLEARING SKIES WITH HIGH PRESSURE SLIDING OVER THE STATE BRING THE PROSPECT OF FOG OVERNIGHT. MIN TEMPS ARE EXPECTED TO BE IN THE LOWER 50S DUE TO THE CLEARING SKIES EXCEPT A LITTLE WARMER IN THE MILWAUKEE AREA.
731 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.
As winds become calm overnight, temps will drop into the lower to mid 60s except the SE Big Bend and the immediate coastal areas which will see upper 60s to lower 70s. Unfortunately, this will be short lived as the low level moisture and warmer overnight temperatures begin to return Thursday and Thursday night.
1137 PM CDT WED AUG 26 2015 Water vapor imagery depicts a broad mid-level ridge to the west which is providing northwest flow aloft over the CWA.
TEMPS HAVE BEEN FALLING INTO THE LOW 50S ALREADY THERE AND SHOULD GET DOWN INTO THE UPPER 40S BY MORNING. 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.
823 PM EDT WED AUG 26 2015 AN UNSEASONABLY STRONG UPPER TROUGH WILL DOMINATE THE WEATHER PATTERN TODAY THROUGH THURSDAY.
744 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.
SFC-850MB RIDGE AXIS SLIDES THROUGH THE UPPER MISSISSIPPI VALLEY. COOL LOWS ARE FORECAST WITH VALUES DROPPING INTO THE LOWER 50S ON AVG. HIGH TEMPS WILL BE A FEW DEGREES WARMER.
A WEAK SHORT WAVE TROUGH HAS ALREADY PRODUCED MID AND HIGH CLOUDS IN SERN OREGON. CLOUD COVER SHOULD KEEP NIGHTTIME TEMPS A FEW DEGS WARMER THAN LAST NIGHT. WE SEE SLIGHT COOLING THURSDAY BEHIND TODAY/S WEAK SHORT WAVE TROUGH.
SOME LOCATIONS IN NORTHERN MINNESOTA FELL INTO THE MIDDLE 30S UNDER THE HIGH THIS MORNING. BUT DEW POINTS ACROSS THE AREA WERE MOSTLY IN THE LOWER AND MIDDLE 50S. WHICH SHOULD KEEP MOST LOCATIONS FROM GETTING COLD ENOUGH FOR FROST OR FREEZING TEMPERATURES. UPPER RIDGING BUILDS INTO CENTRAL US AS TROUGH APPROACHES WEST COAST.
AREA OF HIGH PRESSURE WILL BE SLIDING OFF TO THE EAST WHILE A LOW PRESSURE DEEPENS OVER THE CENTRAL PLAINS. THUS SHIELDING US FROM THE SLIGHTLY WARMER AIR WHICH WILL BEGIN TO BE ADVECTED IN ALOFT. WARMER WITH INCREASING CLOUDS MAINLY SOUTH OF HIGHWAY 2. DESPITE THE CLOUDS TEMPERATURES WILL WARM UP TO THE LOW TO MID 70S. THE NORTHLAND WILL BEGIN THE PERIOD WITH SEASONALLY NORMAL OR SLIGHTLY WARMER THAN NORMAL WEATHER.
SOME OF THE HIGHER RETURNS COULD BE PRODUCING A SPRINKLE OF RAIN AT MOST. 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.
1126 PM CDT WED AUG 26 2015 UPPER LEVEL RIDGE ACROSS THE ROCKIES. WITH A TROUGH ACROSS NEW ENGLAND. CAUSING THE RIDGE TO FLATTEN.
1201 AM EDT THU AUG 27 2015 AN UNSEASONABLY STRONG UPPER TROUGH WILL DOMINATE THE WEATHER PATTERN TODAY THROUGH THURSDAY.
EVEN WITH TEMPS DIPPING TO NEAR DEWPOINTS IN THE LOWER TO MID 60S FOR THE MOST PART ACROSS THE REGION.
LARGE AREA OF HIGH PRESSURE OVER THE SOUTHERN GREAT LAKES AND NORTHERN OHIO VALLEY WILL CONTINUE TO HOLD SWAY DURING THE PERIOD. EVENING TEMPERATURES WILL FALL INTO THE UPPER 60S TO THE LOWER 70S BEFORE BOTTOMING OUT OVERNIGHT IN THE LOWER-MID 50S.
606 PM CDT WED AUG 26 2015 FOR 00Z TAFS /ISSUED 353 PM CDT WED AUG 26 2015/ COURTESY OF HIGH PRESSURE CENTERED ACROSS THE CENTRAL PLAINS. A NORTHERLY FLOW AROUND THE HIGH CONTINUED A TREND OF DRY AND COOLER THAN NORMAL CONDITIONS FOR MUCH OF THE CENTRAL AND EASTERN CONUS. AS THE NORTHERN STREAM FLOWED NORTH OF THE UPPER RIDGE ACROSS THE SOUTHERN ROCKIES. THIS FLOW GOING INTO TROUGHING ALONG THE EAST COAST WAS KEEPING CLOUDS. TOMORROW SHOULD BE A REPEAT PERFORMANCE WITH HIGHS AGAIN IN THE LOW/MID 80S.
829 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.
OVERALL A VERY NICE FORECAST IN STORE FOR THE REGION WITH AN UPPER TROUGH/LOWER HEIGHTS OVER THE REGION. A SLOW WARMING WILL CONTINUE INTO THURSDAY AS TEMPS SLOWLY WARM ALOFT AND THE TROUGH BEGINS TO SLOWLY CUT-OFF. MAINLY EXPECT TEMPS IN THE MID/UPPER 80S AND ONLY SLIGHTLY WARMER TOMORROW.
WILL CONTINUE WITH THE HIGH POPS OVER THESE AREAS. 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.
/ISSUED 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.
719 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.
1058 PM EDT WED AUG 26 2015 AN UNSEASONABLY STRONG UPPER TROUGH WILL DOMINATE THE WEATHER PATTERN TODAY THROUGH THURSDAY.
/ISSUED 332 PM EDT WED AUG 26 2015/ LONG WAVE TROUGH OVER THE EASTERN STATES DOMINATING THROUGH THURSDAY WITH DRY NORTHWEST FLOW ALOFT. FLOW MODIFYING BY THURSDAY NIGHT AS THE UPPER TROUGH WEAKENS BUT LEAVES WEAK LOW PRESSURE TO THE WEST. WHILE A LONGWAVE TROUGH OVER THE E US RELAXES AND A WEAK CLOSED LOW DEVELOPS ACROSS THE GULF COAST STATES/GOM. THE COMBINATION OF SW FLOW ALOFT FROM CLOSED LOW AND ESE FLOW AT THE SFC BECKONS FOR THE RETURN OF ATLANTIC MOISTURE TO THE CWA.
718 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.
624 PM CDT WED AUG 26 2015 HIGH PRESSURE WILL CONTINUE TO BUILD ACROSS THE AREA ALLOWING VFR TO PREVAIL THROUGH THE FCST PERIOD. 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.
904 PM EDT WED AUG 26 2015 WITH HIGH PRESSURE AT THE SURFACE IN CONTROL. AND THE COOLER SURFACE TEMPERATURES. CHATTANOOGA AIRPORT, TN 63 86 66 86 / 0 0 0 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 61 84 63 85 / 0 0 10 10 OAK RIDGE, TN 61 85 64 86 / 0 0 0 10 TRI CITIES AIRPORT, TN 56 83 60 84 / 0 10 10 10.
WARM AND DRY CONDITIONS WILL CONTINUE THROUGH THURSDAY AS STRONG HIGH PRESSURE REMAINS OVER THE SOUTHWESTERN UNITED STATES.
951 PM EDT WED AUG 26 2015 HIGH PRESSURE OVER THE MIDWEST WILL MOVE EAST ACROSS THE OHIO VALLEY AND LOWER GREAT LAKES REGION TONIGHT AND THURSDAY.
615 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.
TROUGHING REMAINS OVER THE EAST COAST. AND THE LOW TO MID 70S EAST OF I95 IN CLOSER PROXIMITY TO THE BOUNDARY. AND WE WILL REMAIN IN A NORTHEASTERLY FLOW REGIME AT THE SURFACE ON THE SOUTHERN PERIPHERY OF THE HIGH. RIDGING OVER THE SOUTHWEST ATLANTIC BEGINS TO RETROGRESS. AND IT WILL CONSEQUENTLY WRAP AROUND THE HIGH PRESSURE TO PRESENT A SURFACE PATTERN WITH AN APPEARANCE MUCH LIKE A DAMMING SCENARIO SANS COOLER AIR. THE HIGH PRESSURE HOLDS TIGHT THROUGH THE WEEKEND.
HIGHEST CONCENTRATION ACROSS THE NORTHERN TAF SITES WHERE SOME SEMBLANCE OF WARM FRONT WILL EXIST. THIS IS TAPPING MOISTURE FOLDING THROUGH THE MID TO UPPER LEVEL RIDGE AXIS POSITIONED OVER THE MIDWEST AND THEN SPREADING INTO LOWER MICHIGAN VIA NW FLOW ALOFT. EMERGING SW GRADIENT WILL SIGNAL THE ONSET OF RETURN FLOW AS THE UPPER RIDGE FLATTENS AND SHIFTS EAST.
637 PM EDT THU JUL 23 2015 DRY HIGH PRESSURE FRIDAY INTO THE WEEKEND. UPPER RIDGE BUILDS OVER THE AREA TONIGHT AND FRIDAY. INITIALLY HIGH PRESSURE DOMINATES THE SURFACE.
1123 AM MDT THU JUL 23 2015 A WEAK TROUGH ALOFT AND PASSING JET SPEED MAXIMA WILL CONTINUE AIDING THE LOWGRADE SHOWERS AND ISOLATED THUNDERSTORMS OVER NW CO AND NE UT EARLY THIS MORNING.
AN UPPER LEVEL TROUGH IS OVER THE REGION WITH DRY SOUTHWEST FLOW.
AN UPPER LEVEL DISTURBANCE WILL CROSS NORTHERN KANSAS EARLY THIS EVENING AS A SURFACE WARM FRONT LIFTS NORTH ACROSS WESTERN KANSAS.
SOME AFTERNOON CONVECTION COULD DEVELOP ON THE HIGHER TERRAIN OF SOUTHEAST OKLAHOMA INTO WEST CENTRAL ARKANSAS. A HOT CLOSE OUT TO THE WEEK INTO THE WEEKEND IS FORECAST WITH MID LEVEL RIDGE OVERHEAD.
451 PM EDT THU JUL 23 2015 HIGH PRESSURE WILL CONTINUE TO PROVIDE SEASONABLY WARM AND DRY WEATHER INTO THE WEEKEND.
ISSUED BY NATIONAL WEATHER SERVICE TAUNTON MA 118 PM EDT THU JUL 23 2015 HIGH PRESSURE WILL BUILD IN THROUGH THE END OF THE WEEK.
WITH A VERY MOIST BOUNDARY LAYER (DEWPOINTS LIKELY AROUND 70) AND STRONG FORCING VIA A COLD FRONT. WHILE THE HIGHER RESOLUTION MODELS (WRF/RAP/NAM) DEVELOP A CLUSTER OF STORMS FURTHER SOUTH AROUND THE BISMARCK AREA. STORMS WILL PROGRESS FROM WEST TO EAST ACROSS THE STATE ALONG AND AHEAD OF A COLD FRONT THIS AFTERNOON THROUGH THE EVENING.