Aikyam-Lab/Synoptic-Bench huggingface dataset:
422 AM EDT THU JUN 4 2015 HIGH PRESSURE WILL KEEP MAINLY DRY WEATHER OVER THE OHIO VALLEY TODAY AS AN UPPER LOW MOVES THROUGH THE CAROLINAS. A WEAK COLD FRONT DROPPING SOUTH FROM THE GREAT LAKES WILL PROVIDE A CHANCE OF THUNDERSTORMS ON FRIDAY.
CUT-OFF UPPER LOW WILL GRADUALLY FILL (WEAKEN) AS IT TRANSLATES SLOWLY EAST ACROSS THE CAROLINAS. TEMPERATURES WILL BE SEASONABLE REACHING THE LOWER 90S INTERIOR AND MID 80S AT THE BEACHES. EAST COAST UPPER TROUGH AND ASSOCIATED MID-ATLANTIC CLOSED LOW BROADEN/OPEN FRI TRANSITIONING SEAWARD SAT INTO SUN AS MODEST UPPER RIDGING REPLACES OVER THE SOUTHEAST. SFC PATTERN YIELDS INITIAL ONSHORE FLOW VEERING FROM SE TO S TO SSW MON-WED AS RIDGE AXIS SETTLES SOUTHWARD.
PATCHY DENSE FOG HAS DEVELOPED ACROSS INLAND SE GA NEAR THE ALTAMAHA ALONG A WEAK COLD FRONT WHICH IS ALSO IN AN AREA WHERE MID/HIGH CLOUDS HAVE THINNED OUT SOMEWHAT. A MID/UPPER LOW ACROSS SC WILL CONTINUE TO SLOWLY WEAKEN AS IT TRACKS TO ACROSS THE MID ATLANTIC COAST BY LATE FRIDAY. A WEAK TROUGH AXIS WILL STILL BE DRAPED OVER THE AREA. MODEL SOUNDINGS CONTINUE TO INDICATE SLIGHTLY WARMER AIR ALOFT ALONG WITH SIGNIFICANT DRIER AIR AT THE MID LEVELS. MODELS VARY SOMEWHAT ON HANDLING MID LEVEL TROUGH.
/ISSUED 331 AM CDT THU JUN 4 2015/ UPPER LOW WILL BE POSITIONED OVER THE CAROLINAS TODAY. UPPER HIGH OVER TX WILL BUILD EAST AND BECOME A BIT SUPPRESSED WITH TIME.
UPPER TROUGH THAT HAS PRODUCED STRONG TO ISOLATED SEVERE THUNDERSTORMS THE LAST TWO DAYS WILL BE OVER THE CAROLINAS TODAY WITH WARMER MID-LEVEL TEMPERATURES OVER THE AREA. DUE TO CLOSER PROXMITY TO UPPER LOW AXIS AND COLDER TEMPERATURES ALOFT. WILL HAVE THE HIGHEST POPS THERE FOR TODAY.
644 AM EDT THU JUN 4 2015 A PRESSURE TROUGH WILL BE NEAR THE COAST THROUGH FRIDAY. CLOSED UPPER LEVEL LOW OVER UPSTATE SOUTH CAROLINA AT 07Z. 850MB WARM ADVECTION/MOISTURE FLUX IN THE LOWER CSRA RESULTING IN SHOWER DEVELOPMENT IN THAT AREA. UPPER LEVEL LOW MOVING OVER THE AREA THROUGH THE DAY. TEMPERATURES NEAR YESTERDAY'S HIGHS OR SLIGHTLY WARMER ON TRACK WITH SOME BREAKS IN THE AFTERNOON. CONVECTION SHOULD DIMINISH DURING THE EVENING AS UPPER LOW MOVES OFF COAST. THE MODELS DISPLAY AN INVERTED TROUGH NEAR THE COAST THROUGH FRIDAY. WE LEANED TOWARD THE HIGHER GUIDANCE POPS BECAUSE OF THE PATTERN. FOLLOWED THE COOLER HIGH TEMPERATURE GUIDANCE BECAUSE OF CLOUDINESS. USED THE GUIDANCE CONSENSUS FOR THE LOW TEMPERATURE FORECAST. THE MODELS INDICATE WEAK UPPER TROUGHING LINGERING EARLY IN THE MEDIUM-RANGE PERIOD BUT THE PATTERN BECOMES FLATTER WITH TIME.
AN UPPER LEVEL LOW PRESSURE SYSTEM CURRENTLY IN CALIFORNIA WILL BRING SCATTERED TO NUMEROUS THUNDERSTORMS OVER THE NORTHERN HALF OF THE FORECAST AREA TODAY. MODELS ARE IN GOOD AGREEMENT WITH THE UPPER LOW MOVING SLIGHTLY SOUTH TOWARDS THE SOUTHERN PART OF CALIFORNIA.
219 AM EDT THU JUN 4 2015 HIGH PRESSURE WILL MOVE OFF THE EAST COAST TONIGHT. CLEAR SKIES THIS EVENING WILL GIVE WAY TO PATCHY CLOUDINESS OVERNIGHT AS MOISTURE RETURNS WITH LIGHT SOUTHERLY FLOW AROUND THE HIGH. FRIDAY WILL FEATURE CLOUDS ALONG WITH A CHANCE FOR A SHOWER OR THUNDERSTORM AS A COLD FRONT MOVES ACROSS THE AREA. HIGH PRESSURE MOVING EAST ACROSS NORTHERN NEW ENGLAND HAS BROUGHT CLEARING TO THE ENTIRE AREA THROUGH THE MIDDLE OF THIS AFTERNOON. CLOUDS WILL TRY TO RETURN BACK TO THE NORTH LATER TONIGHT IN RETURN SOUTHERLY FLOW AROUND THE HIGH AS IT MOVES OFF THE EAST COAST. DECIDED TO GO BETWEEN THESE TWO EXTREMES IN THE FORECAST SHADING SLIGHTLY TOWARD THE COOLER CLOUDIER MET. GENERALLY QUIET WEATHER IS EXPECTED THURSDAY NIGHT WITH WARMER TEMPERATURES IN SSW FLOW AHEAD OF AN APPROACHING COLD FRONT.
121 AM EDT THU JUN 4 2015 RESIDUAL MOISTURE FROM THE MID LEVEL TROUGH CURRENTLY LIFTING SLOWLY TO THE NORTHEAST WILL RESULT IN SCATTERED CONVECTION WITH POSSIBLE THUNDER AFT 18-19Z. MID/UPPER TROUGH AXIS IS SWINGING BY SOUTH FLORIDA THIS EVENING, WITH DRIER MID LEVEL AIR IN ITS WAKE WHICH WILL FILTER OVER THE REGION OVERNIGHT. /ISSUED 724 PM EDT WED JUN 3 2015/ MOST ACTIVE WEATHER ASSOCIATED WITH LOW PRESSURE IN THE GULF OF MEXICO AND NW CARIBBEAN HAS REMAINED TO THE EAST OF SOUTH FLORIDA, WITH GENERALLY VFR CONDITIONS ACROSS THE AREA AND SCATTERED SHOWERS/ISOLATED TSTMS MAINLY OVER THE INTERIOR AND SOUTHERN GULF COAST.
925 MB THERMAL RIDGE NOSING INTO SRN WI ON WEST-SOUTHWEST WINDS WARMING TEMPS TO AROUND 80 WITH LAKE COOLING LIMITED TO RIGHT ALONG THE SHORE.
421 AM EDT THU JUN 4 2015 UPPER LEVEL LOW WILL DRIFT OVER THE CAROLINAS THIS AFTERNOON. WHICH WILL ROTATE AROUND THE NORTHERN PERIPHERY OF THE UPPER LEVEL TROUGH. STILL TIMING THE COLD FRONT FOR FRIDAY EVENING. SIGNIFICANTLY DRIER AIR WILL MOVE IN FROM THE NORTH BEHIND THE COLD FRONT LATE FRIDAY NIGHT.
SPLIT UPPER TROUGH WILL KEEP CHANCE OF SHOWERS AND AFTERNOON THUNDERSTORMS OVER THE AREA TODAY. SHOWER AND THUNDERSTORM COVERAGE INCREASES THIS AFTERNOON ACROSS SW IDAHO AS THE TROUGH AXIS SHIFTS FROM SE OREGON INTO SW IDAHO. THE UPPER TROUGH AXIS IS STATIONARY OVER THE AREA THURSDAY NIGHT AND FRIDAY.
422 AM CDT THU JUN 4 2015 THE UPPER LEVEL RIDGE WAS CONTINUING TO BUILD OVER THE WESTERN AND CENTRAL PORTIONS OF THE STATE THIS MORNING. A CONSENSUS OF THE THE HIGH RESOLUTION MODELS FORECASTS ISOLATED SHOWERS IN THE VICINITY OF THE FRONT THROUGH MID MORNING. THE MODELS THEN BUILD THE UPPER LEVEL RIDGE OVER SE TEXAS BEGINNING ON FRIDAY THROUGH THE WEEKEND. THIS WILL LIKELY END EVEN THE VERY LOW RAIN CHANCES AND LEAD TO DAYTIME HIGH TEMPERATURES TO BE SLIGHTLY WARMER INTO THE LOWER 90S OVER THE INLAND AREAS.
303 AM CDT THU JUN 4 2015 AS UPPER RIDGE BUILDS OVER SOUTHERN PLAINS. AND BACKDOOR COLD FRONT ENTERING NORTHERN AR.
126 AM EDT THU JUN 4 2015 UPPER LEVEL LOW WILL DRIFT OVER THE CAROLINAS THIS AFTERNOON. ANY SHOWERS ACTIVITY WILL BE CONFINED TO THE LOWER WV/MD RIDGES. CLOUDS WILL BEGIN TO ADVECT IN FROM THE SOUTHEAST AROUND THE EASTWARD DRIFTING UPPER LEVEL LOW. WHICH WILL ROTATE AROUND THE NORTHERN PERIPHERY OF THE UPPER LEVEL TROUGH. STILL TIMING THE COLD FRONT FOR FRIDAY EVENING. SIGNIFICANTLY DRIER AIR WILL MOVE IN FROM THE NORTH BEHIND THE COLD FRONT LATE FRIDAY NIGHT.
618 AM EDT THU JUN 4 2015 HIGH PRESSURE OVERHEAD WILL SHIFT OFFSHORE TODAY. A COLD FRONT WILL APPROACH FROM THE NORTH THURSDAY NIGHT AND WILL DROP SOUTH INTO THE MOUNTAINS ON FRIDAY AND THEN THE REST OF THE REGION FRIDAY NIGHT.
LIMITING FACTOR OF DEVELOPEMENT INTO CWA HAS BEEN STRONG MID-LEVEL CAPPING INVERSION ASSOCIATED WITH H5 RIDGE AXIS THAT REMAIN IN PLACE OVER THE REGION. THOUGH MAY SEE MORE VEERING IN THE LOW LEVEL WIND FIELD LATER IN THE DAY PROVIDING SOME DOWNSLOPE WARMING.
HIGH PRESSURE IS NOW NOT MOVING IN ON MON AS BELIEVED YESTERDAY. THE UPPER LEVEL LOW IN SOUTHERN CALIFORNIA DOES SOME RETROGRADE MOVEMENT AND THE NORTHERN BRANCH OF THE JET SAGS SOUTHWARD AND INTO AT LEAST THE IDAHO PANHANDLE. THEN A COLD FRONT PASSAGE SOMETIME WED WILL BRING NOT ONLY THE WIND BUT ALSO COLDER TEMPEATURES.
627 AM EDT THU JUN 4 2015 HIGH PRESSURE WILL MOVE EAST OF THE AREA TODAY AND TONIGHT. A COLD FRONT WILL APPROACH ON FRIDAY AND CROSS THE STATE FRIDAY NIGHT. HIGH PRESSURE WILL RETURN FOR THE WEEKEND. CURRENT SFC ANALYSIS PLACES 1026MB HIGH PRESSURE IN SRN MAINE AS OF 06Z. RIDGE AXIS EXTNDS NORTH INTO NEW BRUNSWICK. EXPECT THAT THIS LOW-LVL MOISTURE WL ERODE THIS MRNG LVG PARTLY SUNNY SKIES THRU THE DAY. DRY WX WL DOMINATE THRU TONIGHT AS H5 RIDGE SLIDES EAST AFT 06Z TONIGHT IN RESPONSE TO APPCHG UL TROF. CLOUDS WILL INCREASE ON FRIDAY AS MOISTURE AHEAD OF AN APPROACHING COLD FRONT SPREADS ACROSS THE REGION. NORTHERN AREAS MAY BE A BIT WARMER WITH HIGHS CLOSE TO 70. SHOWERS WILL SPREAD ACROSS THE REGION FROM NORTHWEST TO SOUTHEAST FRIDAY EVENING AS THE COLD FRONT PUSHES ACROSS THE AREA.
351 AM EDT THU JUN 4 2015 A PRESSURE TROUGH WILL BE NEAR THE COAST THROUGH FRIDAY. CLOSED UPPER LEVEL LOW OVER UPSTATE SOUTH CAROLINA AT 07Z. 850MB WARM ADVECTION/MOISTURE FLUX IN THE LOWER CSRA RESULTING IN SHOWER DEVELOPMENT IN THAT AREA. UPPER LEVEL LOW MOVING OVER THE AREA THROUGH THE DAY. TEMPERATURES NEAR YESTERDAY'S HIGHS OR SLIGHTLY WARMER ON TRACK WITH SOME BREAKS IN THE AFTERNOON. CONVECTION SHOULD DIMINISH DURING THE EVENING AS UPPER LOW MOVES OFF COAST. THE MODELS DISPLAY AN INVERTED TROUGH NEAR THE COAST THROUGH FRIDAY. WE LEANED TOWARD THE HIGHER GUIDANCE POPS BECAUSE OF THE PATTERN. FOLLOWED THE COOLER HIGH TEMPERATURE GUIDANCE BECAUSE OF CLOUDINESS. USED THE GUIDANCE CONSENSUS FOR THE LOW TEMPERATURE FORECAST. THE MODELS INDICATE WEAK UPPER TROUGHING LINGERING EARLY IN THE MEDIUM-RANGE PERIOD BUT THE PATTERN BECOMES FLATTER WITH TIME.
PATCHY COASTAL DRIZZLE WILL BE POSSIBLE OVERNIGHT FROM THE SAN MATEO COAST SOUTHWARD AS AN UPPER LEVEL LOW SETTLES OVER THE REGION.
1256 AM CDT THU JUN 4 2015 HIGH PRESSURE OVER THE SOUTH CENTRAL PLAINS WILL CONTINUE TO DOMINATE.
322 AM EDT THU JUN 4 2015 HIGH PRESSURE WILL MOVE EAST OF THE AREA TODAY AND TONIGHT. A COLD FRONT WILL APPROACH ON FRIDAY AND CROSS THE STATE FRIDAY NIGHT. HIGH PRESSURE WILL RETURN FOR THE WEEKEND. CURRENT SFC ANALYSIS PLACES 1026MB HIGH PRESSURE IN SRN MAINE AS OF 06Z. RIDGE AXIS EXTNDS NORTH INTO NEW BRUNSWICK. EXPECT THAT THIS LOW-LVL MOISTURE WL ERODE THIS MRNG LVG PARTLY SUNNY SKIES THRU THE DAY. DRY WX WL DOMINATE THRU TONIGHT AS H5 RIDGE SLIDES EAST AFT 06Z TONIGHT IN RESPONSE TO APPCHG UL TROF. CLOUDS WILL INCREASE ON FRIDAY AS MOISTURE AHEAD OF AN APPROACHING COLD FRONT SPREADS ACROSS THE REGION. NORTHERN AREAS MAY BE A BIT WARMER WITH HIGHS CLOSE TO 70. SHOWERS WILL SPREAD ACROSS THE REGION FROM NORTHWEST TO SOUTHEAST FRIDAY EVENING AS THE COLD FRONT PUSHES ACROSS THE AREA.
645 AM EDT THU JUN 4 2015 HIGH PRESSURE WILL KEEP MAINLY DRY WEATHER OVER THE OHIO VALLEY TODAY AS AN UPPER LOW MOVES THROUGH THE CAROLINAS. A WEAK COLD FRONT DROPPING SOUTH FROM THE GREAT LAKES WILL PROVIDE A CHANCE OF THUNDERSTORMS ON FRIDAY.
THIS WAVE WILL NUDGE THE UPPER RIDGE AXIS EAST TODAY WITH MODEST HEIGHT FALLS SPREADING INTO WEST TEXAS. THE SURFACE DRYLINE IS EXPECTED TO REMAIN IN EASTERN NEW MEXICO WHILE A PRONOUNCED THETA-E RIDGE DEVELOPS IN THE VICINITY OF THE STATE LINE. SUPPORTED BY THE LOW-LEVEL JET. AFTER TODAY THE UPPER RIDGE WILL REESTABLISH ITSELF AND BECOME FIRMLY IN CONTROL OF THE REGION THROUGH THE WEEKEND. THE RIDGE WILL SUPPRESS ANY CONVECTION THROUGH THE REST OF THE WEEK LIMITING ANY CONVECTIVE ACTIVITY TO NEW MEXICO.
A MID/UPPER LEVEL LOW DRIFTS OFF THE NORTH CAROLINA COAST FRIDAY.
1223 AM CDT THU JUN 4 2015 FOR 06Z TAFS /ISSUED 940 PM CDT WED JUN 3 2015/ AN UPPER LOW THAT WAS ACROSS EASTERN KY/TN YESTERDAY HAS SHIFTED SOUTHWARD OVER THE PAST DAY. COLDER AIR UNDER/NEAR THIS LOW HAD HAS RESULTED IN MORE INSTABILITY TO OUR EAST. ANOTHER COOLER THAN NORMAL NIGHT IS IN THE FORECAST.
447 AM EDT THU JUN 4 2015 LOW PRESSURE WILL DEVELOP ALONG A COASTAL FRONT OFF THE CAROLINA COAST TODAY AND TONIGHT. WHILE HIGH PRESSURE REMAINS OVER THE CENTRAL APPALACHIANS. THE LOW WILL MOVE EAST AND THE WEDGE OF HIGH PRESSURE WILL ERODE ON FRIDAY. A COLD FRONT WILL MOVE THROUGH THE AREA OVER THE WEEKEND. A STATIONARY COASTAL FRONT AND WEDGE OF HIGH PRESSURE OVER THE APPALACHIANS WILL REMAIN IN PLACE TODAY AND TONIGHT. AND THEREFORE THE WARMER TEMPERATURES AND MORE UNSTABLE AIR.
543 AM CDT THU JUN 4 2015 LATEST WATER VAPOR SATELLITE ANIMATION SUGGESTS THAT UPPER LOW OVER THE SOUTHERN APPALACHIANS IS CONTINUING TO DRIFT SOUTHEASTWARD ACROSS THE SAVANNAH RIVER VALLEY THIS MORNING. ISOLATED AFTERNOON CONVECTION WILL REMAIN A POSSIBILITY -- ESPECIALLY FOR THE EASTERN HALF OF THE FORECAST AREA WHERE WEAK UPSLOPE FLOW MAY DEVELOP IN THE HIGHER TERRAIN AND ML CAPE VALUES WILL RANGE FROM 500-1000 J/KG. A MID-LEVEL VORTICITY MAXIMA -- CURRENTLY CROSSING THE CENTRAL ROCKIES -- IS FORECAST TO ROUND THE TOP OF THE STRENGTHENING SOUTHERN PLAINS RIDGE AND BEGIN DIGGING SOUTHEASTWARD OVER THE MID- MISSISSIPPI VALLEY BY FRIDAY AFTERNOON.
WITH HIGHS REACHING THE LOW TO MID 70S. EMBEDDED SHRTWV IN THE LONG WAVE TROUGH/UPPER LOW IN THE SW CONUS WILL BE THE MAIN PLAYER IN TERMS OF HIGHER CHC/S OF RAINFALL THURSDAY NIGHT/FRIDAY MORNING. OR BEFORE HIGH PRESSURE BUILDS INTO THE REGION. BUT HIGH ENOUGH TO KEEP THE BULK OF THE HIGH CHC/S SOUTH OF THE IOWA BORDER. THE UPPER PATTERN WILL CHANGE OVER THE WEEKEND AS A STRONG SHRTWV AND COLD FRONT MOVE SOUTHEAST ACROSS THE UPPER MIDWEST/GREAT LAKES REGION.
HIGH PRESSURE WILL BE POSITIONED NEAR MAINE WITH LOW PRESSURE NEAR THE CAROLINAS THROUGH TODAY. THE LOW WILL MOVE OUT TO SEA ON FRIDAY.
246 AM PDT THU JUN 4 2015 SHOWERS AND THUNDERSTORMS ARE EXPECTED THURSDAY AS LOW PRESSURE MOVES INTO CALIFORNIA. THE LOW WILL LINGER INTO THE WEEKEND WITH A CHANCE FOR SHOWERS AND THUNDERSTORMS EACH DAY. SHOWERS HAVE PERSISTED OVERNIGHT AS THE LEADING JET STREAK FOR AN APPROACHING LOW PRESSURE MOVES THROUGH WESTERN NEVADA. THESE SHOWERS HAVE BEEN MAINLY LOCATED IN THE BASIN AND RANGE ALONG AND EAST OF A GERLACH TO BRIDGEPORT LINE. STILL EXPECTED WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS TODAY AS LOW PRESSURE MOVES OVERHEAD.
HIGH PRESSURE WILL PROVIDE DRY AND SEASONABLE CONDITIONS. A LOW PRESSURE SYSTEM IS CURRENTLY ROTATING OVER THE DEEP SOUTH WHILE A FRONTAL BOUNDARY WORKS ITS WAY INTO THE MIDWEST. ON FRIDAY AND FRIDAY NIGHT AN UPPER WAVE WILL MOVE INTO THE AREA AS IT RIDES OVER AN UPPER RIDGE.
112 AM EDT THU JUN 4 2015 HIGH PRESSURE OVER THE REGION WILL CONTINUE TO PROVIDE DRY WEATHER AND MOSTLY CLEAR SKIES WITH MODERATING TEMPERATURES THROUGH THURSDAY NIGHT. HIGH PRESSURE AND DRY WEATHER WILL RETURN FOR THE UPCOMING WEEKEND, FOLLOWED BY MORE SHOWERS DURING THE WEEK.
404 AM EDT THU JUN 4 2015 MODELS CONSISTENT WITH DRIFTING AN UPPER LOW PRESSURE SYSTEM EAST ACROSS THE CAROLINAS TODAY AND TO THE EAST COAST THROUGH FRIDAY.
128 AM EDT THU JUN 4 2015 A MID/UPPER LEVEL LOW TO THE SOUTH. A COLD FRONT MOVES THROUGH THIS WEEKEND. UPPER LOW ALONG THE CAROLINA COAST FRIDAY WILL OPEN INTO A WAVE. AS A COLD FRONT APPROACHES FROM THE NORTH.
400 AM PDT THU JUN 4 2015 UPPER LOW CLOSING OFF TO THE NORTH OF THE BAY AREA EARLY THIS MORNING RESULTING IN A FEW SHOWERS AND THUNDERSTORMS ACROSS THE NORTH END OF THE SACRAMENTO VALLEY AND ALONG THE SACRAMENTO VALLEY EDGE OF THE COAST RANGE. THE LOW IS FORECAST TO DRIFT SOUTH ALONG THE CENTRAL CALIFORNIA COAST TODAY, INTO SOCAL ON FRIDAY, AND OVER SOUTHERN NEVADA DURING THE WEEKEND. DEPENDING ON THE TRACK OF EMBEDDED VORTICES IN THE EASTERLY FLOW THAT DEVELOPS OVER NORCAL AS THE LOW MOVES TO OUR SOUTH, THE VALLEY MAY EVEN SEE A FEW SHOWERS OR THUNDERSTORMS. DAYTIME TEMPERATURES EXPECTED TO RISE ACROSS THE AREA OVER THE WEEKEND AS THE LOW DRIFTS FURTHER AWAY AND HIGH PRESSURE BEGINS TO BUILD TO OUR NORTH, BUT CLOUD COVER SHOULD TEMPER READINGS SOMEWHAT.
423 AM CDT THU JUN 4 2015 A PRONOUNCED SUBTROPICAL RIDGE AXIS WILL PERSIST OVER THE SOUTHERN PLAINS/OZARKS WHILE A MID/UPPER LEVEL LOW OVER THE SOUTH ATLANTIC STATES CONTINUES TO HELP DRAW DRIER AIR SOUTHWARD INTO THE ARKLAMISS REGION. OUR REGION WILL REMAIN ON THE EASTERN SIDE OF AN UPPER RIDGE THAT WILL BE LOCATED OVER TEXAS.
AN AREA OF HIGH PRESSURE BUILDING INTO THE REGION WILL BRING CLEARING SKIES. ALONG WITH COOLER TEMPERATURES TONIGHT. THE HIGH PRESSURE SHOULD KEEP A MAJORITY OF THE CWA DRY UNTIL THE AFTERNOON HOURS ON THURSDAY. PERSISTENT SOUTHWEST CONUS TROFFING/LOW LOOKS TO LOSE ITS PUNCH AS MID LEVEL RIDGING BUILDS NORTH OVERTOP THE TROF. THE WESTERN CONUS RIDGE ALLOWS FOR DOWNSTREAM TROFFING OVER THE NORTHERN PLAINS.
150 AM EDT THU JUN 4 2015 HIGH PRESSURE OVER NEW ENGLAND WILL WEAKEN BY FRIDAY TO ALLOW A COLD FRONT TO DROP SOUTH ACROSS THE AREA.
A RIDGE OF HIGH PRESSURE ALOFT WILL BUILD OVER THE OFFSHORE WATERS THROUGH FRIDAY. A STRENGTHENING UPPER LEVEL RIDGE ALONG 130W WILL BE RESPONSIBLE FOR A DRYING AND WARMING TREND TODAY INTO FRIDAY.
331 AM CDT THU JUN 4 2015 UPPER LOW WILL BE POSITIONED OVER THE CAROLINAS TODAY. UPPER HIGH OVER TX WILL BUILD EAST AND BECOME A BIT SUPPRESSED WITH TIME.
146 AM EDT THU JUN 4 2015 HIGH PRESSURE OVER THE REGION WILL CONTINUE TO PROVIDE DRY WEATHER AND MOSTLY CLEAR SKIES WITH MODERATING TEMPERATURES THROUGH THURSDAY NIGHT. HIGH PRESSURE AND DRY WEATHER WILL RETURN FOR THE UPCOMING WEEKEND, FOLLOWED BY MORE SHOWERS DURING THE WEEK.
A LOW PRESSURE SYSTEM WILL BRING COOL WEATHER WITH SOME DRIZZLE AND OCCASIONAL LIGHT SHOWERS FOR MUCH OF THE REMAINDER OF THE WEEK. LOW PRESSURE WILL WEAKEN OVER THE WEEKEND AS A HIGH PRESSURE CENTER OVER NORTHERN MEXICO BUILDS NORTHWEST INTO SOUTHERN CALIFORNIA AND BRINGS WARMER WEATHER WITH DECREASING CLOUDINESS.
LOWS IN THE LOW AND MIDDLE 70S ARE FORECAST AS A HUMID AIRMASS REMAINS IN PLACE. WATER VAPOR SATELLITE TRENDS THIS AFTERNOON STILL INDICATE AN UPPER LEVEL RIDGE OVER THE SOUTHEAST UNITED STATES. REGIONAL WSR-88D RADAR TRENDS INDICATE SCATTERED SHOWERS AND THUNDERSTORMS OVER A GOOD PORTION OF THE LOWER MISSISSIPPI VALLEY WITH THE BEST COVERAGE SOUTH OF I-20 AND ACROSS AREAS WEST OF THE MISSISSIPPI RIVER. TEMPERATURES ACROSS THE MID SOUTH ARE IN THE UPPER 80S TO AROUND 90 DEGREES WITH A FEW LOCATIONS IN THE LOWER 80S DUE TO RAIN COOLED AIR. LATEST SHORT TERM MODELS INCLUDING THE HRRR INDICATE SHOWERS AND THUNDERSTORMS ENCOMPASSING MUCH OF THE LOWER MISSISSIPPI VALLEY THIS AFTERNOON WILL GRADUALLY DIMINISH THIS EVENING WITH THE LOSS OF DAYTIME HEATING. LOWS TONIGHT ARE EXPECTED TO BE WARM AGAIN WITH MOST READINGS IN THE LOWER TO MIDDLE 70S.
ISOLATED SHRA/TSRA CONTINUES TO DISSIPATE THIS EVENING AS HIGH PRESSURE BUILDS ACROSS THE TN VALLEY. EXPECT SHRA/TSRA TO BEGIN TO TAPER OFF AFTER 02Z WITH LOST OF DAYTIME HEATING AND HIGH PRESSURE BUILDING ACROSS THE AREA. NOT SURE HOW FAR NORTH OR EAST THESE SHRA/TSRA WILL GO AS HIGH PRESSURE BUILDS IN FROM THE SE.
722 PM EDT SAT JUN 13 2015 HIGH PRESSURE WILL BUILD DOWN FROM THE NORTHWEST TONIGHT AND CREST OVER THE REGION ON SUNDAY.
another very mild night is in store with lows generally in the low to mid 70s.
1001 PM EDT SAT JUN 13 2015 A WEAK COLD FRONT WILL STALL ACROSS THE REGION TONIGHT AND SUNDAY.
ROTATING N AROUND THE DIRTY UPPER RIDGE ANCHORED OVER THE SE CONUS. AMENDMENTS FOR TEMPO GROUPS LIKELY SUNDAY AFTN WITH CLUSTERS OF TSTMS AND WE/LL CONTINUE TO INCREASE COVERAGE IN THE COMING DAYS AS A WEAK UPPER TROUGH SITS OVER THE PLAINS AND COPIOUS AMOUNTS OF TROPICAL MOISTURE SURGES INLAND OVER THE TX COASTAL BEND WITH A HIGH CHANCE FOR A CYCLONE IN THE GULF.
1129 PM EDT SAT JUN 13 2015 HIGH PRESSURE OFF THE SOUTHEAST COAST OF THE U.
A few showers are still possible across the higher terrain of Northwest Montana with clearing and dry weather elsewhere. A slight chance of showers and thunderstorms will exist during this time for far northwest Montana, particularly over the high terrain in and surrounding Glacier Park. Locations above 5500 feet and valleys near the Continental Divide will once again cool down to near freezing tonight, with another round of frost possible. Cover sensitive plants! Brief high pressure Sunday night will be quickly supplanted by southwesterly flow aloft over the Northern Rockies.
CENTRAL ALABAMA WILL REMAIN UNDER THE WESTERN EDGE OF A LOW LEVEL RIDGE. AN UPPER HIGH WILL PUSH DEEPER MOISTURE WESTWARD AND RAIN CHANCES TOO LOW ON SUNDAY FOR VCTS.
929 PM EDT SAT JUN 13 2015 HIGH PRESSURE WILL BUILD DOWN FROM THE NORTHWEST LATER TONIGHT AND CREST OVER THE REGION ON SUNDAY.
FOR 06Z AVIATION FORECAST SURFACE AND UPPER RIDGING WILL REMAIN PLACE NEXT 24 HOURS WITH MOST OF THE CONVECTION WORKING AROUND THE PHERIPHERY OF RIDGE WITH ONLY ISOLATED CONVECTION POSSIBLE HERE IN MIDDLE TENNESSEE.
RAIN THREAT SHOULD GRADUALLY END BY MIDNIGHT OVER THE HIGHER TERRAIN AND ALONG THE FOOTHILLS. THERE ARE SOME MODEL DIFFERENCES WITH THE 12Z GFS SHOWING SOME UPSLOPE FLOW BEHIND THE PASSAGE OF A COLD FRONT.
FOR THE REMAINDER OF TONIGHT WE WILL CONTINUE TO SEE SOME HIGH CLOUDS SPREAD NORTH FROM THE LOW PRESSURE OVER THE YUCATAN PENINSULA WITH TEMPERATURES FALLING TO AROUND 70 ACROSS INLAND PORTIONS OF THE NATURE COAST TO THE UPPER 70S ALONG THE COAST AROUND TAMPA BAY.
THE MODELS EXPAND THE UPPER RIDGE A LITTLE FARTHER WEST ON SUNDAY.
937 PM EDT SAT JUN 13 2015 HIGH PRESSURE BUILDS OVER THE REGION TONIGHT AND MOVES OFFSHORE ON SUNDAY.
WILL MAINTAIN SLIGHT CHANCE POPS IN THE NORTH TOWARDS DAWN AS A WEAK SHORT WAVE TROUGH MOVES ACROSS THE OHIO VALLEY. AN UPPER LEVEL RIDGE WAS CENTERED OFF THE SOUTH CAROLINA COAST. WITH A BROAD TROUGH OVER CENTRAL AND SOUTHERN ROCKIES INTO THE CENTRAL AND SOUTHERN PLAINS. WHILE A TROUGH WAS WORKING ALONG THE US/CANADIAN BORDER FROM ALBERTA AND SASKATCHEWAN SOUTH INTO THE NORTHERN ROCKIES. THE UPPER LEVEL RIDGE CENTERED OVER THE SOUTHEASTERN US COAST IS EXPECTED TO REMAIN IN PLACE. THE CENTER OF THE RIDGE SHOULD AT LEAST BRIEFLY GET A BIT CLOSER TO THE AREA ON SUNDAY. WITH THE HIGH DEWPOINTS IN PLACE.
A WARMING TREND WILL DEVELOP THROUGH MIDWEEK AS HIGH PRESSURE BUILDS OVER THE REGION. BROUGHT TO US BY AN UPPER-LEVEL TROUGH OF LOW PRESSURE CENTERED OVER THE GULF OF CALIFORNIA. WILL THIN TONIGHT AS THE TROUGH MOVES EAST AND A RIDGE OF HIGH PRESSURE BUILDS OVER THE STATE. THE MARINE LAYER WILL SHRINK OVER THE COMING DAYS AS THE RIDGE BUILDS IN AND SUBSIDENCE ALOFT CLAMPS DOWN ON THE TOP OF THE MARINE LAYER.
A WEAK UPPER DISTURBANCE EMBEDDED IN THE LONG WAVE TROUGH PATTERN IS EVIDENT ON WATER VAPOR THIS EVENING AS IT MOVES ACROSS NORTHEASTERN WASHINGTON STATE. HIGH TEMPERATURES TOMORROW WILL BE ABOUT 3 TO 5 DEGREES WARMER THAN TODAY.
NOT SURE HOW FAR NORTH OR EAST THESE SHRA/TSRA WILL GO AS HIGH PRESSURE BUILDS IN FROM THE SE. EXPECT SHRA/TSRA TO BEGIN TO TAPER OFF AFTER 02Z WITH LOST OF DAYTIME HEATING AND HIGH PRESSURE BUILDING ACROSS THE AREA.
819 PM EDT SAT JUN 13 2015 HIGH PRESSURE OFF THE SOUTHEAST COAST OF THE U.
RIDGING TO THE SOUTHEAST WILL MOVE LITTLE THROUGH THE PERIOD.
1019 PM EDT SAT JUN 13 2015 WITH UPPER LEVEL RIDGING REMAINING CENTERED OVER THE SOUTHEASTERN STATES. WITH AN UPPER RIDGE REMAINING IN PLACE OVER THE SOUTHEASTERN STATES. WITH A LACK OF FOCUSED UPPER-LEVEL SUPPORT ON THE PERIPHERY OF THE RIDGE.
TEMPERATURES ARE IN THE LOWER 80S. AN ATLANTIC RIDGE OF HIGH PRESSURE WILL EXTEND ACROSS NORTH FLORIDA OVERNIGHT. AN AREA OF LOW PRESSURE WILL BE CENTERED OVER THE YUCANTAN PENINSULA TONIGHT.
FOR 00Z AVIATION FORECAST EXPECTING SOME LATE NIGHT FOG ESPECIALLY AT CROSSVILLE OTHERWISE VFR THROUGH THE NEXT 24 HOURS AS BERMUDA RIDGE AT BOTH SURFACE AND ALOFT REMAINS IN CONTROL.
AMENDMENTS FOR TEMPO GROUPS LIKELY SUNDAY AFTN WITH CLUSTERS OF TSTMS AND WE/LL CONTINUE TO INCREASE COVERAGE IN THE COMING DAYS AS A WEAK UPPER TROUGH SITS OVER THE PLAINS AND COPIOUS AMOUNTS OF TROPICAL MOISTURE SURGES INLAND OVER THE TX COASTAL BEND WITH A HIGH CHANCE FOR A CYCLONE IN THE GULF. /ISSUED 359 AM CDT SAT JUN 13 2015/ LARGE AREA OF CONVECTION NOTED THIS MORNING OVER CENTRAL OK/N TX ASSOCIATED WITH A WEAK UPPER LEVEL TROF IN THE SRN PLAINS. WV IMAGERY SHOWS UPPER RIDGING OVER THE SERN U. OUR REGION REMAINS PINCHED BETWEEN THE UPPER RIDGE TO THE E AND THE TROF TO THE NW. WE ARE LIKELY TO SEE COOLER TEMPS TODAY DUE TO MORE CLOUD COVER AND CONVECTION.
359 PM CDT SUN OCT 18 2015 HIGH PRESSURE CENTERED OVER SOUTHERN ILLINOIS THIS AFTERNOON AND COVERING MUCH OF THE EASTERN TWO THIRDS OF THE COUNTRY. HIGH PRESSURE WILL MOVE TO THE EAST COAST PROVIDING A BIT MORE OF AN EASTERLY COMPONENT TO THE WINDS AND ALLOW MODERATION OF DEW POINTS TO A MORE SEASONABLE LEVEL.
This will cause the low level pressure gradient to increase allowing winds to turn out of of the south at 5 to 10 mph which will allow for more mixing tonight.
TONIGHT WILL ACTUALLY BE ON THE CHILLY SIDE FOR PARTS OF INLAND SE GA AND THE SUWANNEE RIVER VALLEY OF NE FL WITH LOWS FALLING DOWN INTO THE LOW TO MID 40S. NORTHEAST FLOW WILL KEEP THE COASTAL ZONES AND OURSOUTHERN ZONES MORE MODIFIED WITH LOWS ONLY IN THE MID TO UPPER 50S INLAND TO THE LOWER 60S AT THE BEACHES. LARGE HIGH PRESSURE RIDGE THAT IS PUSHING TO THE MID ATLANTIC COAST THIS AFTERNOON WILL STALL OVER THE CAROLINAS TONIGHT AND MONDAY. THE RIDGE WILL CONTINUE TO DOMINATE THE WX PATTERN OVER THE SE CONUS THRU THE UPCOMING WEEK WHILE A LOW PRESSURE TROUGH DEVELOPS OFFSHORE. MONDAY WILL MAINLY BE DRY BUT SOME ATLANTIC SHOWERS ASSOCIATED WITH THE TROUGH WILL LIKELY REACH THE COAST LATE MONDAY AFTERNOON.
The low pressure that is circulating to our south has been sloppy and inconsistent, although tonight's reinforcement of moisture should be much more organized.