Aikyam-Lab/Synoptic-Bench huggingface dataset:
330 PM CDT TUE AUG 4 2015 LATEST SFC ANALYSIS WAS INDICATING RIDGE HANGING ON ACRS THE UPPER MS RVR VALLEY INTO THE GRT LKS. A WAVE COMPLEX PUSHING INTO THE WEST CENTRAL TO NORTHWESTERN HIGH PLAINS WAS TRYING TO UNDERCUT MID CONUS OMEGA RIDGE. BULK OF 12Z RUN MODELS SEEM TO TAKE INTO ACCOUNT THE STRENGTH OF UPPER RIDGE AND IT/S LEE SIDE CYCLONIC FLOW TO THE EAST OF THE WEST PLAINS UPPER WAVE COMPLEX. BOTH UPPER AND LOWER RIDGING MAY HAVE MORE OF AN INFLUENCE ON THE LOCAL CWA THAN THE MO VORT MAX WITH MUCH OF THE AREA ESPECIALLY THE NORTHERN HALF TO TWO THIRDS STAYING MAINLY DRY ON WED WITH CONTINUED HIGHER BASED DEBRIS CLOUDS FILTERING THE SUNSHINE.
354 PM EDT TUE AUG 4 2015 WEAK LOW PRESSURE WILL CONTINUE TO SPIN ALONG THE CAROLINA COASTLINES TONIGHT. THIS LOW WILL TRACK NORTHEAST AND AWAY FROM THE REGION WEDNESDAY.
245 PM MDT TUE AUG 4 2015 CURRENT WATER VAPOR SATELLITE LOOP SHOWS THE UPPER LEVEL LOW PUSHING INTO WESTERN NEBRASKA AT THIS HOUR. THUNDERSTORMS HAVE REDEVELOPED OVER EAST CENTRAL WYOMING AND WESTERN NEBRASKA THIS AFTERNOON DUE TO SOME COOLER AIR ALOFT PUSHING OVER THE AREA. MODELS SHOW THE UPPER LEVEL RIDGE AXIS REBUILDING OVER THE ROCKY MOUNTAIN REGION. THE RIDGE AXIS IS RELATIVELY WEAK. EXPECT TSTORM ACTIVITY TO BE RELATIVELY WEAK DUE TO WARMER AIR ALOFT.
133 PM EDT TUE AUG 4 2015 WEAK LOW PRESSURE WILL CONTINUE TO SPIN ALONG THE CAROLINA COASTLINES TONIGHT. THIS LOW WILL TRACK NORTHEAST AND AWAY FROM THE REGION WEDNESDAY.
ALL THIS IN PART TO NW FLOW ALOFT BRINGING A CANADIAN AIR MASS INTO THE LOWER 48 WITH THE BRUNT OF CAA DROPPING DOWN THRU THE GREAT LAKES REGION.
359 PM EDT TUE AUG 4 2015 AN UPPER LEVEL LOW WILL CONTINUE TO BRING UNSETTLED WEATHER TO THE NORTH COUNTRY THROUGH WEDNESDAY WITH SCATTERED SHOWERS AND THUNDERSTORMS.
WITH THE RIDGE BUILDING IN FROM THE WEST TODAY INSTABILITY WILL BE LIMITED. HIGH PRESSURE BUILDS OVER THE REGION TODAY RESULTING IN A DRAMATIC CHANGE FROM THE RECENT COOL AND STORMY WEATHER. A FEW ISOLATED THUNDERSTORMS REMAIN POSSIBLE OVER THE HIGH TERRAIN THIS AFTERNOON. A 500 MB TROUGH FEATURE BRUSHING NORTHERN UTAH AND SOUTHWEST WYOMING WILL CAUSE THE PRESSURE GRADIENT TO TIGHTEN YIELDING INCREASED WINDS DURING THE AFTERNOON.
135 PM EDT TUE AUG 4 2015 COOLER AND LESS HUMID CONDITIONS WILL BE FELT TODAY AS HIGH PRESSURE DRIFTS OVER THE REGION.
444 PM EDT TUE AUG 4 2015 HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE AREA TONIGHT.
AS HIGH PRESSURE SHIFTS BACK EAST OF THE AREA. AN UNFAVORABLE RIDGE POSITION AND ORIENTATION OVERHEAD HAS TEMPORARILY SHUT DOWN THE MONSOON. THE HIGH PRESSURE COMBINED WITH LESS MOISTURE HAS HELPED PUSH OUR TEMPERATURES TO WELL ABOVE CLIMO TODAY AND SHOULD AGAIN TOMORROW. OVERALL ANOTHER DRY AND HOT DAY FOR SOUTHEAST ARIZONA AS THE RIDGE STARTS TO WEAKEN.
318 PM MDT TUE AUG 4 2015 ENOUGH DRYING BEHIND THE TROUGH MOVING INTO KANSAS AND NEBRASKA TO KEEP CONVECTION WEAK AND SHALLOW. EXCEPT ABOUT 5 DEGREES WARMER.
1231 PM CDT TUE AUG 4 2015 220 AM CDT HIGH PRESSURE WILL CONTINUE TO INFLUENCE THE WEATHER TODAY AND LIKELY THROUGH WEDNESDAY. THE RIDGE CENTER IS POSITIONED WEST OF THE FORECAST AREA THROUGH THIS AFTERNOON. HIGHS WILL WARM TO NEAR SEASONAL CONDS IN THE LOWER 80S. CLOSER TO LAKE MICHIGAN TEMPS MAY BE JUST A FEW DEGREES COOLER. ELSEWHERE WITH THE RIDGE CENTER DISPLACED NORTHEAST OF THE CWFA. HIGHS WEDNESDAY WILL AGAIN APPROACH THE LOW 80S.
328 PM EDT TUE AUG 4 2015 AN AREA OF LOW PRESSURE WILL MOVE NORTHEAST ALONG THE COAST TONIGHT.
A LOW PRESSURE SYSTEM ALOFT WILL PREVAIL OVER THE REGION THROUGH WEDNESDAY.
Seasonal temperatures are expected again tonight as a prevailing southerly flow reinforces the mild air mass in place across the high plains. Considering increased cloud cover across central Kansas tonight and likely precip about, look for lows down into the 60s(F) across Central Kansas to possibly the lower 70s(F) in South Central Kansas. A weak cold front is projected to push across western Kansas Wednesday dropping temperatures across all of central and much of southwest Kansas. For Wednesday, upper level warmer ridging builds into the western High Plains with highs warming into the mid to upper 90s far west near the Colorado border, to the low to mid 90s elsewhere.
THE MID AND UPPER LEVEL RIDGE IS FORECAST BY THE MODELS TO CONTINUE BUILDING OVERHEAD.
HIGH PRESSURE SURFACE AND ALOFT WILL BUILD OVER WEST CENTRAL AND SOUTHWEST FLORIDA TONIGHT AND WEDNESDAY. AN UPPER-LEVEL RIDGE WILL REMAIN ANCHORED OVER THE SOUTH-CENTRAL U. THROUGH THE END OF THE WEEK AS A TROUGH BECOMES BETTER ESTABLISHED OVER THE EAST COAST. AN AREA OF LOW PRESSURE WILL FORM AND MOVE NEAR THE EASTERN SEABOARD WITH A TROUGH EXTENDING INTO THE SOUTHEAST.
BUT FOR NOW THE IDEA OF RIDGE FLATTENING WAVES BRINGING PERIODIC EPISODES OF SHOWERS AND STORMS STILL APPLIES TO THE WEDNESDAY NIGHT THROUGH WEEKEND PERIOD.
301 PM PDT TUE AUG 4 2015 DRY AND COOLER THAN NORMAL CONDITIONS CONTINUE TODAY ACROSS CENTRAL CALIFORNIA.
101 PM EDT TUE AUG 4 2015 LOW PRESSURE WILL CONTINUE TO MOVE NORTHEAST AWAY FROM THE REGION THIS AFTERNOON AND TONIGHT.
659 PM EDT TUE AUG 4 2015 LOW PRESSURE WILL CONTINUE TO MOVE NORTHEAST AWAY FROM THE REGION TONIGHT.
Seasonal temperatures are expected again tonight as a prevailing southerly flow reinforces the mild air mass in place across the high plains. Considering increased cloud cover across central Kansas tonight and likely precip about, look for lows down into the 60s(F) across Central Kansas to possibly the lower 70s(F) in South Central Kansas. A weak cold front is projected to push across western Kansas Wednesday dropping temperatures across all of central and much of southwest Kansas.
WITH HIGH PRESSURE TO OUR WEST. NW FLOW PERSISTS ON THE BACK SIDE OF THE UPPER LOW JUST SOUTH OF HUDSON BAY. RIDGING ACROSS THE CENTRAL PLAINS INTO THE UPPER MIDWEST. WITH A DISTURBANCE UNDER CUTTING THE RIDGE CLOSER TO THE SURFACE FRONT. BUT WITH HIGH PRESSURE JUST TO OUR WEST. ALONG WITH SOME DAYTIME HEATING INDUCED CUMULUS ASSOCIATED WITH THE UPPER LOW. THE UPPER LOW WILL PULL EAST TONIGHT INTO WEDNESDAY. ALLOWING THE UPPER RIDGE TO SLIDE OVERHEAD TOMORROW. WITH THE HIGH EAST OF THE LAKE. ONSHORE FLOW WILL KEEP LAKE ADJACENT AREAS COOLER IN THE 70S. WHILE AREAS INLAND STAY CLOSE TO WHERE THEY ARE PEAKING TODAY IN THE LOW 80S.
BUT ABUNDANT SUNSHINE AND INCREASING WARM S/SW FLOW WILL RESULT IN AFTN HIGHS CLIMBING INTO THE UPPER 90S ACROSS W/NW OK AND THE LOWER 100S ACROSS SW OK/WRN N TX. DPTS WILL HOLD IN THE LOWER 70S THROUGH THE AFTN.
1108 AM MDT TUE AUG 4 2015 UPPER LOW OVER CENTRAL WY CONTINUES TO APPROACH THE CWA. TODAY THROUGH WEDNESDAY NIGHT UPPER LOW ACROSS WY CONTINUES ITS TRACK TOWARD THE CWA THIS MORNING. CONVECTION WILL RAMP UP THIS AFTN INTO THE EVNG AS THE UPPER LOW CROSSES THE AREA.
/ISSUED 315 AM CDT TUE AUG 4 2015/ EARLY THIS MORNING RADAR SHOWED SHOWER AND THUNDERSTORM ACTIVITY 15 TO 50 NM OFFSHORE BETWEEN GRAND CHENIER AND THE LOWER ATCHAFALAYA RIVER.
THE TREND FOR MUGGIER NIGHTTIME CONDITIONS WILL CONTINUE WITH LOWS EXPECTED TO BE A LITTLE WARMER TONIGHT.
1245 PM CDT TUE AUG 4 2015 CONVECTION WAS ONGOING THIS MORNING ALONG A WARM FRONT AND 2000 J/KG INSTABILITY AXIS DRAPED FROM SOUTHERN SOUTH DAKOTA. BEFORE A SECOND AREA OF SHOWERS AND STORMS DEVELOPS OVER KANSAS WITH THE STRENGTHENING WARM FRONT.
QUITE THE DISCREPANCY WITH THE HIGH TEMP GUIDANCE FOR WEDNESDAY. VALUES WILL RETURN INTO THE LOWER 90S FOR HIGHS. LOW TEMPS GENERALLY IN THE LOWER 70S.
12-13 UTC HRRR RUNS AND 12 UTC NAM ARE ALL IN AGREEMENT ON CONVECTION REMAINING IN EASTERN MONTANA THROUGH 00 UTC IN ASSOCIATION WITH A NARROW AXIS OF MID TO UPPER 60S DEWPOINTS CURRENTLY ACROSS SOUTHERN SOUTH DAKOTA AND NEBRASKA THIS MORNING THAT WILL ADVECT NORTHWEST AHEAD OF THE WARM FRONTAL BOUNDARY THROUGH THE AFTERNOON. LOW PRESSURE CONTINUED TO DEVELOP IN THE LEE OF THE ROCKIES. A RIDGE WAS MAINTAINED OVER THE CANADIAN ROCKIES AND FRONT RANGE. A LOW LEVEL JET WAS ESTABLISHED ACROSS THE HIGH PLAINS OF EASTERN CO/WY AND WESTERN NE/SD NUDGING INTO EASTERN MONTANA. THE MODELS MOVE THE UPPER LEVEL RIDGE EASTWARD TODAY. WITH THE RIDGE FLATTENING AS A STRONG UPPER LEVEL IMPULSE. LOOK FOR HIGHS TODAY IN THE LOWER 80S NORTH CENTRAL THROUGH THE JAMES VALLEY TO THE UPPER 80S IN THE SOUTHWEST.
308 PM CDT TUE AUG 4 2015 LATEST WATER VAPOR SATELLITE IMAGERY INDICATING UPPER LEVEL TROUGH OVER THE HUDSON BAY/GREAT LAKES REGION AND UPPER LEVEL RIDGE OVER THE NORTHERN PLAINS. LATEST 20Z SURFACE ANALYSIS SHOWING HIGH PRESSURE OVER EASTERN IOWA AND SOUTHERN MINNESOTA PROVIDING MOSTLY/PARTLY SUNNY SKIES ACROSS THE FORECAST AREA. HIGH PRESSURE REMAINS IN CONTROL OF THE FORECAST AREA WEDNESDAY AND PROVIDE DRY WEATHER AND SEASONAL TEMPERATURES.
1231 PM CDT TUE AUG 4 2015 SCATTERED TO BROKEN MID LEVEL CLOUDS ASSOCIATED WITH A PASSING SHORT WAVE TROUGH WILL LINGER ACROSS NORTH TEXAS THROUGH THE EVENING. S UPPER HIGH. THE HIGH-BASED AND LIGHT NATURE OF RAINFALL WILL ONLY YIELD SPOTTY AMOUNTS OF A TRACE TO A FEW HUNDREDTHS LIKE THE PAST FEW MORNINGS. S UPPER RIDGE GRADUALLY EXPANDS EAST ACROSS THE AREA IN RESPONSE TO UPPER LEVEL ENERGY DEEPENING ACROSS THE PACIFIC NORTHWEST AND A CUT OFF UPPER LOW APPROACHES THE CA COASTLINE ON WEDNESDAY.
LATEST AVAILABLE IR IMAGERY OVERLAID WITH MODEL STREAMLINE ANALYSIS AS OF 200 PM DEPICT THE CENTER OF AN EXPANSIVE MIDDLE AND UPPER ANTICYCLONE POSITIONED OVER CENTRAL TEXAS. THE AXIS OF A TROPICAL UPPER TROPOSPHERIC TROUGH(TUTT) IS ORIENTED FROM THE NORTHERN BAHAMAS SOUTH SOUTHWESTWARD TO HONDURAS. THERE IS EVIDENCE OF A FAINT MID- LEVEL TROUGH FEATURE EVIDENT IN THE 12Z SOUNDING. AT THE SURFACE AND IN THE LOWER TO MID LEVELS. THERE IS A WEAK INVERTED TROUGH ANALYZED OVER THE NORTHWESTERN BAHAMAS. THERE IS A CLOUD LINE WITHIN 5 NM NORTH OF THE LOWER KEYS.
1153 AM MDT TUE AUG 4 2015 WATER VAPOR IMAGERY SHOWING MONSOON PLUME BEING ADVECTED EAST INTO THE EASTERN CWFA THIS MORNING AHEAD OF AN UPPER LOW CURRENTLY TRACKING INTO SOUTHERN WYOMING NEAR RAWLINS. UPPER LOW MOVES EAST INTO CENTRAL NEBRASKA AFTER 06Z THIS EVENING WITH MOST SHOWERS AND THUNDERSTORMS COMING TO AN END AFTER THAT TIME. UPPER RIDGE BUILDS BACK OVER THE AREA FOR WEDNESDAY WITH MAINLY DRY CONDITIONS ACROSS THE CWFA.
638 PM EDT TUE AUG 4 2015 LOW PRESSURE ALOFT AND ITS ASSOCIATED CYCLCONIC FLOW WILL BRING THE THREAT OF SHOWERS AND THUNDERSTORMS INTO THIS EVENING AND AGAIN MAINLY WEDNESDAY AFTERNOON.
200 PM PDT TUE AUG 4 2015 SEASONAL WEATHER WILL CONTINUE THIS COMING WEEK UNDER HIGH PRESSURE ALOFT.
1015 AM PDT TUE AUG 4 2015 COOLER WEATHER EARLY THIS WEEK WITH TEMPERATURES BELOW AVERAGE FOR EARLY AUGUST THROUGH WEDNESDAY.
CONVECTIVE TEMPERATURES APPEAR TO BE IN THE LOW TO MIDDLE 90S ON SURROUNDING AREA SOUNDINGS. ONLY A COUPLE DEGREES WARMER THAN WE ARE CURRENTLY AT MOST LOCATIONS. WATER VAPOR SATELLITE TRENDS THIS MORNING INDICATES AN UPPER LEVEL RIDGE AXIS CENTERED OVER THE SOUTHWEST UNITED STATES AND SOUTHERN PLAINS. THE MID SOUTH STILL REMAINS UNDER THE INFLUENCE OF THE UPPER LEVEL RIDGE AXIS THIS MORNING BUT ON THE EASTERN PERIPHERY OF THE RIDGE.
BUT OVERALL RAIN CHANCES ARE ON THE DECREASE AS THE STRONG UPPER HIGH REASSERTS ITSELF. TEMPS AND DEWPTS LOOK TO BE JUST A BIT WARMER ON WEDNESDAY ALTHOUGH WE SHOULD STAY JUST BELOW ADVISORY CRITERIA.
336 PM PDT TUE AUG 4 2015 COOLER WEATHER WITH TEMPERATURES BELOW AVERAGE THROUGH WEDNESDAY.
Upper level ridge will be building back over West Central Texas over the next 24 hours, bringing the slim chances of rain a few areas have had to an end. As the ridge builds in even more on Wednesday, temperatures will inch a degree or two higher and be well in excess of 100 in a few local areas. A strong upper level high pressure ridge will dominate the weather pattern and bring hot and dry conditions.
By Wednesday night, a trough will approach northwest Montana, spreading a few overnight showers and breezy winds over higher elevations.
THIS EVENING THROUGH WEDNESDAY NIGHT UPPER LOW IS SPINNING OVER EASTERN WY AS IT GRADUALLY TRANSITIONS EASTWARD.
1202 PM CDT TUE AUG 4 2015 IN THE WAKE OF THE MORNING SHOWER ACTIVITY AND WITH DRIER AND WARMER AIR MOVING IN. TEMPS WILL BE WARMER THAN YESTERDAY AS THICKNESSES INCREASE OVERHEAD BUT SHOULD STAY IN THE LOW 90S ON THE CAPROCK AND IN THE MID/UPPER 90S ACROSS THE ROLLING PLAINS. THE OVERNIGHT FORECAST REMAINS DRY AS WELL AS THE UPPER LEVEL RIDGE TO THE WEST SLOWLY BEGINS ITS MIGRATION EASTWARD. ALDRICH RIDGING ALOFT WILL CONTINUE TO BUILD EAST INTO MID-LATE WEEK ACROSS THE SOUTHERN ROCKIES INTO THE SOUTHERN PLAINS.
341 PM CDT TUE AUG 4 2015 ABOVE NORMAL TEMPERATURES EXPECTED TO PERSIST THROUGH THE PERIOD WITH SIGNIFICANTLY WARMER THAN NORMAL TEMPERATURES POSSIBLE OVER THE WEEKEND.
143 PM EDT TUE AUG 4 2015 A COLD FRONT PUSHES SOUTHEAST OF THE AREA BY LATE TONIGHT. HIGH PRESSURE CROSSES LATE TONIGHT AND WEDNESDAY.
1253 PM CDT TUE AUG 4 2015 FOR 18Z TAFS /ISSUED 1046 AM CDT TUE AUG 4 2015/ HIGH PRESSURE REMAINS SITUATED OVER EASTERN TN AND MUCH OF NORTHERN AL THIS MORNING. AN AREA OF LOW PRESSURE HAS FORMED IN SOUTHERN MISSOURI ALONG THE FRONT. A WEAK AREA OF CONVERGENCE EXISTS SOUTH FROM THIS FEATURE JUST WEST OF THE RIDGE INTO MISSOURI.
236 PM EDT TUE AUG 4 2015 LOW PRESSURE ALOFT AND ITS ASSOCIATED CYCLCONIC FLOW WILL BRING THE THREAT OF SHOWERS AND THUNDERSTORMS INTO THIS EVENING AND AGAIN MAINLY WEDNESDAY AFTERNOON.
349 PM EDT TUE AUG 4 2015 HIGH PRESSURE WILL DOMINATE THE REGION THROUGH WEDNESDAY NIGHT WITH PLEASANT CONDITIONS AND LOW HUMIDITY.
COMBINATION OF ASCENT FROM THE TROUGH. RAIN CHANCES FOR WEDNESDAY WILL SPREAD ACROSS MORE OF THE AREA AS SOME OF THE SHWRS/TSTMS MAY CLIP PORTIONS OF SE OK/SW AR AND ADDITIONAL DEVELOPMENT OF ISOLATED CONVECTION WILL BE POSSIBLE DUE TO THE PASSING TROUGH AXIS. THE GREATER LARGE SCALE ASCENT AS WELL AS A BACK DOOR COLD FRONT WILL REMAIN NORTH OF OUR CWA ACROSS KS/OK/MO/AR. THE UPPER TROUGH WILL MOVE OFF TO THE EAST AND PIECES OF IT ARE EXPECTED TO MOVE ACROSS THE SERN CONUS AND ROTATE AROUND THE ERN PERIPHERY OF AN EXPANDING UPPER RIDGE THAT WILL BE WORKING ITS WAY BACK TOWARDS THE SRN PLAINS.
334 PM CDT TUE AUG 4 2015 QUIET WEATHER FOR THE SHORT TERM PERIOD WITH HIGH PRESSURE RIDGE MOVING SLOWLY EAST OVER THE GREAT LAKES REGION. RETURN FLOW ON THE BACKSIDE OF THE HIGH WILL SWING WINDS TO A MORE SOUTHEAST/SOUTH DIRECTION OVER THE REGION.
1235 PM CDT TUE AUG 4 2015 LARGE UPPER LOWS OVER BRITISH COLUMBIA AND HUDSON BAY WITH RIDGE THROUGH NORTHERN ROCKIES INTO CANADA. MOVING UNDER THE RIDGE. BROAD TROUGH OVER THE EASTERN CONUS FROM HUDSON BAY LOW INTO THE SOUTHEAST CONUS. AS THE UPPER LOW CONTINUES TO MOVE SLOWLY EAST NORTHEAST TODAY CONVECTION WILL BEGIN OVER SOUTHWEST NEBRASKA AND THE SOUTHEAST NEBRASKA PANHANDLE ALONG STATIONARY BOUNDARY.
208 PM CDT TUE AUG 4 2015 220 AM CDT HIGH PRESSURE WILL CONTINUE TO INFLUENCE THE WEATHER TODAY AND LIKELY THROUGH WEDNESDAY. THE RIDGE CENTER IS POSITIONED WEST OF THE FORECAST AREA THROUGH THIS AFTERNOON. HIGHS WILL WARM TO NEAR SEASONAL CONDS IN THE LOWER 80S. CLOSER TO LAKE MICHIGAN TEMPS MAY BE JUST A FEW DEGREES COOLER. ELSEWHERE WITH THE RIDGE CENTER DISPLACED NORTHEAST OF THE CWFA. HIGHS WEDNESDAY WILL AGAIN APPROACH THE LOW 80S.
THE DEEPER MOISTURE LINGERS INTO WEDNESDAY WITH THE SUBTROPICAL RIDGE REMAINING OVER THE SOUTHWESTERN STATES.
ISOLATED -TSRA POSSIBLE AFT ABOUT 20Z OVER THE HIGH TERRAIN AS WELL AS PORTIONS OF EASTERN NM.
232 PM EDT TUE AUG 4 2015 LOW PRESSURE ALOFT AND ITS ASSOCIATED CYCLCONIC FLOW WILL BRING THE THREAT OF SHOWERS AND THUNDERSTORMS INTO THIS EVENING AND AGAIN MAINLY WEDNESDAY AFTERNOON.
THE RIDGE BUILDS IN FROM THE WEST OVERNIGHT. TEMPERATURES WILL BE WARMER WITH VALUES ABOVE NORMAL FOR WEDNESDAY AFTERNOON AS THE BREEZY CONDITIONS AND TIGHT GRADIENT HELP TO KEEP THE ATMOSPHERE WELL MIXED. EXPECTING MINIMUM TEMPERATURES WEDNESDAY NIGHT TO BE BELOW NORMAL AND COOLER THAN GUIDANCE WITH GOOD RADIATIONAL COOLING DUE TO CLEAR SKIES AND NO ENHANCED DRAINAGE WINDS EXPECTED GIVEN THE RELAXED GRADIENT.
318 PM EDT TUE AUG 4 2015 UPPER RIDGE ALREADY ESSENTIALLY GONE.
642 PM EDT TUE AUG 4 2015 A WEAKENING COLD FRONT WILL DROP ACROSS THE AREA OVERNIGHT. THE FRONT WILL DISSIPATE WEDNESDAY AS HIGH PRESSURE BUILDS INTO THE GREAT LAKES AND OHIO VALLEY.
THIS IS CONFIRMED BY THE HIGH RES MODELS INCLUDING THE HRRR. CURRENT CONDITIONS ACROSS EASTERN KENTUCKY FEATURES SOME WANING CONVECTION AHEAD OF A COLD FRONT. THE UPPER LEVEL FLOW SETS UP IN A RIDGE OVER THE WEST AND TROUGH OVER THE EAST WITH NUMEROUS WAVES TRAVELING OVER THE RIDGE AND INTO THE CENTRAL PLAINS. FEATURING AN UPPER LEVEL RIDGE NEAR THE DESERT SOUTHWEST. WITH TROUGHING IN THE MISSISSIPPI VALLEY AND NEAR THE CONTINENTAL DIVIDE. TROUGHING WILL BE MORE CONFINED TO THE EASTERN SEABOARD. WITH THE RIDGE SHIFTING EAST TOWARDS THE ARKLATEX REGION. WITH TROUGHING IN THE FAR WEST. WHILE THE RIDGE HOLDS FAST ACROSS THE MIDDLE OF THE CONUS.
AN AREA OF LOW PRESSURE WILL DEEPEN AS IT TRACKS QUICKLY NORTHEAST OFF THE MID-ATLANTIC COAST THROUGH THIS AFTERNOON.
823 AM EST FRI MAR 4 2016 A COLD FRONT CONTINUES TO MOVE SOUTH ACROSS CENTRAL FL. HIGH TEMPERATURES TODAY WILL RANGE FROM THE LOWER/MID 60S NORTH OF I-10.
THE COLD FRONT LOOKS TO BE DRAPED ACROSS NORTHERN WYOMING AT THIS HOUR AND SHOULD CONTINUE TO ADVANCE SOUTHEASTWARD THROUGH TODAY AND ACROSS OUR EASTERN PLAINS BEGINNING AROUND SUNRISE. TEMPS WILL BE COOLER BEHIND THE FRONT AND WITH LESS WIND IN THE LATE AFTERNOON. THE LEESIDE SFC PRESSURE TROUGH WILL DEEPEN IN THIS PATTERN. BREEZY CONDITIONS WILL CONTINUE FOR SATURDAY NIGHT AS THE LEESIDE TROUGH PERSISTS.
408 AM CST FRI MAR 4 2016 NORTHWEST FLOW ALOFT WILL PREVAIL OVER THE LOWER MS RIVER VALLEY THROUGH SATURDAY. PERSISTING LONG ENOUGH FOR A WEAK COLD FRONTAL PASSAGE SATURDAY AFTERNOON.
COLD FRONT IS NOW SOUTH OF THE REGION AS DEWPOINTS HAVE DROPPED INTO THE LOW-40S IN A LOT OF PLACES. COOLER AIR AND DRIER AIR WILL CONTINUE TO FILTER IN FROM THE NORTH-NORTHEAST THROUGH THE MORNING HOURS. MUCH LIKE THE PREVIOUS FRONT OUR NORTHEAST FLOW WILL LAST NO MORE THAN 12 TO 18 HOURS BEFORE WE START TO ADVECT IN WARMER AND MOISTER AIR OFF THE GULF. NOT MUCH DIFFERENT ON SATURDAY AS ON FRIDAY JUST A TOUCH WARMER AS THE LOW-LEVELS WARM WITH RIDGE AXIS SHIFTING FARTHER TO OUR WEST.
941 AM EST FRI MAR 4 2016 WEAK FRONTAL BOUNDARY SAGGING SOUTHWARD ACROSS THE REGION THIS MORNING WITH HIGH PRESSURE BUILDING ACROSS OHIO IN ITS WAKE.
COLD FRONTAL EFFECTS CAN BE SEEN IN THE WIND PROFILE AS WINDS ARE BACKING FROM THE NNE AT THE SURFACE TO THE WNW 400 MB (25 KFT). THE DRY PROFILE AND COOLER AIR WILL HELP KEEP RAIN CHANCES NEAR MINIMUM FOR TODAY. A COLD FRONT HAS MVED THROUGH THE COASTAL WATERS. HIGH PRESSURE WILL SETTLE AND PREVAIL THROUGH THE WEEKEND.
245 AM PST FRI MAR 4 2016 RIDGE AXIS OVER THE GREAT BASIN TODAY WILL BE MOVING EAST.
CHATTANOOGA AIRPORT, TN 52 34 64 38 / 10 0 10 10 KNOXVILLE MCGHEE TYSON AIRPORT, TN 48 32 60 36 / 10 0 10 10 OAK RIDGE, TN 49 32 60 36 / 10 0 10 10 TRI CITIES AIRPORT, TN 47 29 53 33 / 10 0 20 20.
639 AM EST FRI MAR 4 2016 WEAK FRONTAL BOUNDARY SAGGING SOUTHWARD ACROSS THE REGION THIS MORNING WITH HIGH PRESSURE BUILDING ACROSS OHIO IN ITS WAKE.
HIGH PRESSURE ALOFT ACROSS THE GREAT BASIN TODAY WILL GIVE WAY TO AN INCREASINGLY MOIST SOUTHWEST FLOW THIS WEEKEND.
WITH HIGH PRESSURE BRINGING BACK DRY WEATHER BY AFTERNOON. ANOTHER AREA OF LOW PRESSURE CROSSES SATURDAY. CLOUDS WILL SLOWLY BREAK THIS AFTERNOON AND EVENING AS WEAK RIDGING AT THE SURFACE AND ALOFT ARRIVES. BUT WITH THE OVERALL TREND COOLER. THE EXCEPTION TO THIS WILL BE IN THE HIGH TERRAIN EAST. 1-3" IS POSSIBLE IN THE RIDGES OVER A 24HR PERIOD.
A cool and quiet night is underway early this morning, with high pressure moving through the mid Mississippi Valley.
UPPER LEVEL HIGH PRESSURE OVER THE ROCKIES ATTEMPTS TO MOVE EAST. BUT ALLOWING FOR COOLER. A BIT COOLER NORTH.
602 AM EST FRI MAR 4 2016 WEAK FRONTAL BOUNDARY SAGGING SOUTHWARD ACROSS THE REGION THIS MORNING WITH HIGH PRESSURE BUILDING ACROSS OHIO IN ITS WAKE.
BY SATURDAY AFTERNOON RAIN WILL BECOME STEADY AND THEN HEAVY FOR A TIME THROUGH SATURDAY EVENING AS A STRONG COLD FRONT PASSES THROUGH THE REGION WITH GUSTY SOUTHERLY WINDS.
The cold front is now south of the area and moving slowly down the FL Peninsula. This cloud deck is expected to break up this afternoon allowing temps to reach the lower 60s north to around 70 across the eastern FL Big Bend.
605 AM CST FRI MAR 4 2016 AT H5 CLOSED LOW OVER GULF OF ALASKA WITH HEIGHT RISES INTO WESTERN CANADA. CLOSED LOW OVER THE NORTHEAST CONUS WITH STRONG WAVE MOVING ACROSS THE EASTERN CONUS FROM THE GREAT LAKES TO FLORIDA. AS A LONG WAVE TROUGH DEVELOPS ALONG THE WEST COAST.
A COLD FRONT WILL PROGRESS SOUTHWARD THROUGH NORTHERN AND CENTRAL FLORIDA THIS AFTERNOON.
THIS WILL BE A SHORT PERIOD OF FREEZING RAIN/DRIZZLE. ISSUED A SPECIAL WEATHER STATEMENT FOR AREAS ALONG AND SOUTH OF INTERSTATE 94 TO HIGHLIGHT THIS LIGHT FREEZING RAIN THREAT.
HIGH TEMPS WILL BE WARMER IN THE EAST DUE TO A LONGER PERIOD OF SUNSHINE. DRY MID LEVEL AIR WILL THEN SPREAD EWD ACROSS SRN WI WITH DRIZZLE OR FREEZING DRIZZLE THEN EXPECTED THE REMAINDER OF THE NIGHT. THE IMPACT OF THE FREEZING DRIZZLE WILL PROBABLY BE SMALL SINCE TEMPS WILL BE NEAR THE FREEZING MARK AND ROADS WILL EITHER BE TREATED OR ALREADY HAVE SOME SNOW ON THEM. 2-3 INCHES FORECAST OVER THE NRN CWA TO LESS THAN AN INCH WEST AND SOUTH OF KMSN WHERE TEMPS WILL BE WARMER AND LESS LIFT AND QPF IS EXPECTED. WITH DECREASING CLOUDS BY AFTERNOON AS HIGH PRESSURE APPROACHES.
418 AM MST FRI MAR 4 2016 A FLAT UPPER LEVEL RIDGE WILL REMAIN OVER THE AREA AS A COOL FNT MOVES ACROSS NERN CO TODAY. THERE WILL BE QUITE A BIT OF MID LVL MOISTURE MOVING ACROSS AND WITH LAPSE RATES AROUND 7 C/KM BY AFTN WDLY SCT SHOWERS MAY DVLP OVER THE HIGHER TERRAIN. AS FOR HIGHS THIS AFTN READINGS SHOULD BE FM 3 TO 5 DEGREES COOLER OVER THE PLAINS BEHIND THE COOL FNT.
545 AM CST FRI MAR 4 2016 HIGH PRESSURE IS SETTLING INTO THE REGION THIS AM.
/ISSUED 545 AM CST FRI MAR 4 2016/ HIGH PRESSURE IS SETTLING INTO THE REGION THIS AM.
816 AM EST FRI MAR 4 2016 ARCTIC HIGH PRESSURE WILL CREST OVER THE AREA LATE TONIGHT INTO FRIDAY. LOW PRESSURE MOVING OFF THE MID ATLANTIC STATES WILL PASS WELL SOUTH OF THE AREA FRIDAY INTO FRIDAY NIGHT. TEMPS SHOULD RECOVER TO AFTN HIGHS ABOUT 10 DEG WARMER THAN YSTDY WITH NRN PTNS OF THE FA REMAINING MCLR. CLDS WILL BEGIN TO DECREASE ACROSS E CNTRL AND DOWNEAST PTNS OF THE FA LATE TNGT AS THE LOW TRACKS TO S OF ERN NOVA SCOTIA. WHATS LEFT OF THE SFC HI WILL CONT RIDGING ACROSS THE N TNGT ALLOWING ONE MORE NGT OF RADIATIONAL COOLING AND LOW TEMPS WELL BELOW ZERO OVR BROAD VLY AREAS. HIGH PRESSURE DOMINATES WITH SLOWLY MODERATING TEMPERATURES.
THIS LOW LEVEL MOISTURE IS BEING POOLED AHEAD OF A WEAKENING LONGWAVE TROUGH OVER KENTUCKY. THIS TROUGH AXIS WILL BE SLOW TO MOVE EASTWARD TODAY. HIGHS IN THE LOWER TO MID 40S LOOK REASONABLE. MVFR CEILINGS ASSOCIATED WITH AN UPPER TROF OVER THE NERN US. AFTER 00Z AN UPPER RIDGE WILL BEGIN TO BUILD ACROSS THE AREA WHICH WILL HELP TO DISSIPATE THE LOW CLOUDS.
/ISSUED 408 AM CST FRI MAR 4 2016/ NORTHWEST FLOW ALOFT WILL PREVAIL OVER THE LOWER MS RIVER VALLEY THROUGH SATURDAY. PERSISTING LONG ENOUGH FOR A WEAK COLD FRONTAL PASSAGE SATURDAY AFTERNOON.
535 AM CST FRI MAR 4 2016 SPOTTY LIGHT FREEZING RAIN HAS BEEN OCCURRING OVER SOUTHWEST ND AND NORTHWEST SD OVER THE PAST FEW HOURS AND IS JUST NOW MOVING INTO NORTH CENTRAL SD. WILL CONTINUE MENTION OF LIGHT FREEZING RAIN OVER THE NORTHERN CWA OVER THE NEXT SEVERAL HOURS AS ACTIVITY CONTINUES TO PUSH EAST. LOOKING FOR HIGHS IN THE 40S AND 50S AND TRIED TO KEEP THE SNOW PACK AREAS A BIT COOLER THAN SURROUNDINGS. HIGHS ARE ACTUALLY A BIT TRICKY TODAY AS MODELS ARE TRYING TO GENERATE SOME CLOUD COVER ON THE BACK SIDE OF THE LOW PRESSURE OVER THE EASTERN CWA. THE WEEKEND IS LOOKING DRY AND VERY PLEASANT AS EVEN WARMER TEMPS MOVE IN.