Aikyam-Lab/Synoptic-Bench huggingface dataset:
A LARGE HIGH REMAINS CENTERED OVER TEXAS THIS MORNING AND A WEAK TROF SITS ALONG THE COAST WITH A SOUTHWESTERLY FLOW OVER OUR CWA.
MOISTURE REMAINS IN PLACE TODAY COMBINED WITH UPPER LEVEL TROUGH OF LOW PRESSURE TO PRODUCE AN UNSTABLE ATMOSPHERE THROUGH THE DAY.
910 AM EDT SAT JUL 11 2015 THE WEEKEND WILL BE DRY UNDER HIGH PRESSURE. THE ONLY WRENCH IN THE FORECAST WILL BE OVER THE SOUTHEASTERN RIDGES.
/ISSUED 334 AM CDT SAT JUL 11 2015/ A retrograding subtropical ridge, currently centered over E TX/LA early this morning, will continue to muscle its way westward today and eventually anchor itself overhead by Sunday. Today's temperatures will be slightly warmer than yesterday with highs ranging from the upper 80s in the higher terrain to the low/mid 90s elsewhere. By Sunday the upper ridge will take hold of the region completely, suppressing any convection through the upcoming work week.
SFC LEE TROUGH TO LINGER THROUGH 12/12Z. WITH STORMS AGAIN FAVORING THE HIGH TERRAIN AND THE SOUTHEAST PLAINS.
SUNDAY WILL BE M/SUNNY AND LITTLE WARMER AND MORE HUMID WITH HIGHS IN THE LOWER TO MID 80S. THE TREND FOR THE NEW WORK WEEK WILL BE FOR A BUBBLE OF HEAT TO DOMINATE THE SOUTHWEST AND FOR WEAK TROFFING TO DEVELOP OVER THE NERN US.
MONSOON MOISTURE AND THE POSSIBILITY OF THUNDERSTORMS WILL GRADUALLY RETURN TO THE AREA AS HIGH PRESSURE REBUILDS OVER THE SOUTHWEST STATES. AGREE WITH PREVIOUS SHIFT THAT MUCH OF THIS LOW LEVEL MOISTURE WILL MIX OUT LATER THIS MORNING/AFTERNOON WEST OF A KAYENTA-WINSLOW-PAYSON LINE. IN THE UPPER LEVELS, NORTHERN ARIZONA IS CURRENTLY POSITIONED BETWEEN A WEST COAST TROUGH AND SUBTROPICAL HIGH PRESSURE CENTERED OVER LOUISIANA. THE WEST COAST TROUGH IS FORECAST TO WEAKEN, ALLOWING SUBTROPICAL HIGH PRESSURE TO CREEP WESTWARD AND SET UP OVER TEXAS.
WITH THE LOW NOW WELL NORTH OF THE AREA THE RESIDUAL TROUGHINESS NEAR THE WEST COAST HAS FILLED A BIT. THE RIDGE IS BUILDING BACK IN FROM THE EAST. FAIRLY FAST SWLY FLOW ALOFT CONTINUED OVER SE ARIZONA EARLY THIS MORNING IN RESPONSE TO A TROUGH ADJACENT THE WEST COAST AND HIGH PRESSURE CENTERED OVER NORTHEAST TEXAS. THE UPPER TROUGH IS PROGGED TO REMAIN QUASI-STATIONARY NEAR THE WEST COAST THRU WED. AND HIGH PRESSURE ALOFT WILL CONTINUE TO BE CENTERED OVER TEXAS.
HIGH PRESSURE WILL PROVIDE FOR ANOTHER QUIET NIGHT WITH LOWS IN THE MID 50S TO LOWER 60S. SUNDAY WILL BE BRIGHT AND WARM WITH HIGHS IN THE LOWER TO MID 80S. THE TREND FOR THE NEW WORK WEEK WILL BE FOR A BUBBLE OF HEAT TO DOMINATE THE SOUTHWEST AND FOR WEAK TROFFING TO DEVELOP OVER THE NERN US.
1043 AM EDT SAT JUL 11 2015 HIGH PRESSURE WILL PREVAIL ACROSS THE REGION THIS WEEKEND.
UPPER LEVEL RIDGE WILL CONTINUE TO SCOOT TO THE WEST TODAY BUT ITS INFLUENCE REMAINS ACROSS THE SOUTHERN CONUS. LIGHT EAST-NORTHEAST FLOW AROUND THE RIDGE AXIS WILL CONTINUE TO ADVECT IN THE DRY AND SUBSIDENT AIR FROM THE ATLANTIC INTO THE REGION. LOW LEVEL RIDGE AXIS HAS SHIFTED SOUTH OF THE CAPE THIS MORNING RESULTING IN A SLIGHT INCREASE IN SOUTH-SOUTHWEST FLOW ACROSS THE REGION.
UNSEASONABLY STRONG UPPER LOW OVER NRN CA/WRN NV CONTINUED TO WEAKEN AND LIFT NEWD EARLY THIS MORNING. FRI EVENING SURFACE DEWPOINTS OVER THE CENTRAL DESERTS HAD CLIMBED INTO THE LOW TO MID 50S. FOR THE WEEKEND GUIDANCE REMAINS CONSISTENT THAT THE GRADUALLY WEAKENING TROFFING TO OUR NORTHWEST WILL ALLOW THE MAIN UPPER HIGH TO BUILD BACK WESTWARD.
651 AM CDT SAT JUL 11 2015 06Z SFC DATA HAS AN INFERRED FRONTAL BOUNDARY FROM NORTHERN KANSAS INTO WESTERN KENTUCKY WITH HIGH PRESSURE OVER THE OHIO VALLEY.
IT FORMED AND MOVED ALONG A WARM FRONT, WHICH IS FORECAST TO LIFT NORTHEASTWARD INTO EASTERN KENTUCKY BY THIS AFTERNOON. HOWEVER, FEWER CLOUDS OVER THE SOUTHWESTERN HALF OF THE MID STATE WILL ALLOW FOR ANOTHER HOT AFTERNOON, WITH TEMPS LIKELY TO TOP OUT IN THE LOWER AND MIDDLE 90S ONCE AGAIN.
856 AM EDT SAT JUL 11 2015 HIGH PRESSURE WILL BE IN CONTROL OF OUR WEATHER THROUGH THE WEEKEND. TEMPERATURES RANGED FROM THE UPPER 50S IN THE HIGHER ELEVATIONS TO THE LOW 70S IN THE MID HUDSON VALLEY. THE RIDGE OF HIGH PRESSURE WILL MOVE OFF THE COAST ON SUNDAY NIGHT WITH DRY WEATHER CONTINUING.
RELATIVELY DRY ATMOSPHERE WILL DECREASE AREAL COVERAGE OF THUNDERSTORMS OVER MUCH OF THE REGION THIS AFTERNOON ALLOWING STRONG INSOLATION THROUGH THE DAY WITH HIGH TEMPERATURES IN THE LOWER TO MID 90S. WEST CENTRAL AND SOUTHWEST FLORIDA IS ALSO ON THE EASTERN EDGE OF A STRONG U/L RIDGE CENTERED OVER THE SOUTHERN PLAINS WHICH WILL ENHANCE SUBSIDENCE OVER THE FORECAST AREA.
737 AM EDT SAT JUL 11 2015 THE COMBINATION OF A DRIER AIR MASS AND HIGH PRESSURE IN CONTROL ACROSS THE REGION WILL LIKELY INHIBIT CONVECTION ACROSS THE REGION TODAY.
604 AM CDT SAT JUL 11 2015 HIGH PRESSURE WILL CONTINUE TO DOMINATE THROUGH THE PERIOD WITH WIDESPREAD VFR CONDITIONS EXPECTED.
BECAUSE OF THE LOW CLOUDS. UPPER TROUGH AXIS IS PUSHING TO THE EAST.
1016 AM EDT SAT JUL 11 2015 AN UPPER RIDGE OVER THE DEEP SOUTH WILL RETROGRADE WESTWARD DURING THE WEEKEND ALLOWING AN UPPER TROUGH TO FORM OVER THE EAST COAST. OVERNIGHT LOWS WILL FALL TO THE LOW/MID 70S. THE INCREASED MOISTURE WILL LIKELY RESULT IN MORE CLOUD COVER AND COOLER TEMPERATURES AS HIGHS ARE EXPECTED TO BE IN THE MID 90S.
HIGH TEMPERATURES HAVE BEEN TRENDED DOWN A FEW DEGREES TO THE LOW TO MID 80S DUE TO PREVALENT CLOUD COVER AND SHOWERS/THUNDERSTORMS.
637 AM CDT SAT JUL 11 2015 FOR 12Z TAFS /ISSUED 249 AM CDT SAT JUL 11 2015/ THE MUCH ADVERTISED UPPER LEVEL RIDGE CONTINUES TO MAINTAIN ITS HOLD ACROSS MUCH OF THE SOUTHERN CONUS THIS EVENING. THIS WEAKNESS IN THE RIDGE WAS PROVIDING ENOUGH SUPPORT TO PRODUCE SCATTERED CONVECTION ALONG THE APPALACHIANS. WITH 07Z TEMPERATURES IN THE LOW TO MID 70S AND DEWPOINTS GENERALLY NEAR 70 DEGREES. THE CENTER OF THE UPPER RIDGE WILL CONTINUE TO SLIDE WESTWARD OVER THE NEXT FEW DAYS. HOWEVER THE EASTERN PERIPHERY OF THE RIDGE WILL HOLD STEADY OVER THE FORECAST AREA. EXPECT THE HIGHER POTENTIAL TO BE ACROSS THE EAST. WHERE THE RIDGE MAY NOT BE AS STRONG.
EXCEPT FOR UPR RIDGE BEING CENTERED A LITTLE FURTHER WEST. AND A MORE PREVALENT SURFACE TROF INDICATED OVER CTRL GA AND EASTERN CAROLINAS. AND SOME CONVECTION N OF OUR AREA ALONG SFC TROF WHICH COULD AFFECT OUR NRN COUNTIES TWRD 21Z. WITH WEAK RIDGE OVER THE WATERS DURING THE WEEKEND.
HIGH PRESSURE ALOFT WILL CONTINUE TO FAVOR VFR CONDITIONS WITH SOUTH WINDS PREVAILING FOR THE NEXT SEVERAL DAYS. /ISSUED 401 AM CDT SAT JUL 11 2015/ THE RIDGE OF HIGH PRESSURE ALOFT THAT HAS DOMINATED THE SOUTHEASTERN STATES IN RECENT DAYS WILL SURGE WESTWARD INTO THE LONE STAR STATE TODAY.
1258 PM EDT SAT JUL 11 2015 HIGH PRESSURE WILL MOVE EAST ACROSS THE AREA TODAY AND TONIGHT.
A COOL TROUGH WILL INFLUENCE THE WEATHER TODAY. ENOUGH INCOMING FAVORABLE DYNAMICS PER THE APPROACHING UPPER TROUGH WARRANTS A MENTION OF THUNDER THOUGH. THIS IS BECAUSE WE'RE LOSING THE SOUTHERLY OR WEAK FLOW ALOFT THAT WE'VE SEEN FOR DAYS AND DAYS WITH THE NEARBY UPPER LOW. THE LOWER CONDITIONS WILL MOVE BACK ONSHORE SATURDAY EVENING.
WITH 6SM AT KCRP TOWARD THE END OF THE FORECAST BUT EARLIER AND A BIT THICKER AT KVCT AND KALI WHERE SUFFICIENT OVERNIGHT COOLER COULD BRING MORE FOG TO THE AREAS. 5 INCHES AND UPPER RIDGE SHIFTS MORE INTO NORTH TEXAS. BUT FOR SUNDAY AM EXPECTING A DEGREE OR TWO WARMER (THE LATTER OUT WEST) WITH WARMER BOUNDARY LAYER.
1203 PM EDT SAT JUL 11 2015 THE WEEKEND WILL BE DRY UNDER HIGH PRESSURE. A BIT MORE CU FORMING IN THE HIGHER LOWER LEVEL DEWPOINTS TO THE SOUTHWEAST PORTION OF THE CWA. HAVE REMOVED THE SLIGHT CHANCE OF A SHOWER IN THE RIDGES.
1243 PM EDT SAT JUL 11 2015 HIGH PRESSURE WILL BE IN CONTROL OF OUR WEATHER THROUGH THE WEEKEND.
1236 PM EDT SAT JUL 11 2015 HIGH PRESSURE WILL MOVE SLOWLY EAST OF THE AREA TODAY.
/ISSUED 336 AM CDT SAT JUL 11 2015/ IT APPEARS THE WET STRETCH OF LATE WILL BEGIN TO WIND DOWN AS UPPER RIDGING THAT HAS BEEN ANCHORED ACROSS THE DEEP SOUTH BEGINS TO BUILD THIS WAY TODAY AND BECOMES CENTERED NEARBY ON SUNDAY. BEFORE THE RIDGE TAKES FULL CONTROL OF OUR WEATHER. AS THE UPPER RIDGE BUILDS THIS WAY. THOUGH THINGS SHOULD QUICKLY SHUT OFF AFTER DARK AS THE UPPER RIDGE EXERTS ITSELF. RANGING FROM THE MID-60S AROUND FRIONA TO LOWER 70S FOR THE LOWEST ELEVATIONS OUT EAST.
A LOW PRESSURE SYSTEM CONTINUES TO MOVE OUT OF THE REGION WITH RESIDUAL SHOWERS AND THUNDERSTORMS IN THE HIGH COUNTRY OF THE SIERRA WILL CONTINUE.
627 AM CDT Sat Jul 11 2015 An upper level ridge centered over the Gulf Coast states will shift westward and expand this weekend. Temperatures will be a degree or two hotter on Sunday with most areas in the lower 90s. Dewpoints will remain rather high in the lower to middle 70s at times over the next several days because of all the moisture and water on the ground.
ANOTHER UPDATE TO REFLECT WARMER HIGH TEMPERATURES MAY BE NEEDED.
/ISSUED 737 AM EDT SAT JUL 11 2015/ THE COMBINATION OF A DRIER AIR MASS AND HIGH PRESSURE IN CONTROL ACROSS THE REGION WILL LIKELY INHIBIT CONVECTION ACROSS THE REGION TODAY.
1155 AM CDT MON OCT 26 2015 MOISTURE WRAPPING AROUND THE UPPER LOW ALONG THE LOWER MS RIVER CONTINUES TO FORCE POCKETS OF LIGHT TO MODERATE RAIN WWRD OVER PARTS OF N LA/S AR/E TX. /ISSUED 429 AM CDT MON OCT 26 2015/ UPPER LOW SLOWLY MOVG EAST OVER THE AREA. SW STATES UPPER TROF WILL BEGIN TO PUMP DEEP SW FLOW LATER IN THE WEEK.
628 AM CDT MON OCT 26 2015 HIGH PRESSURE WILL CONTINUE TO MOVE OUT OF THE REGION MONDAY AS WAVES OUT OF THE SOUTHERN ROCKIES AND PACIFIC NORTHWEST EMERGE.
620 AM CDT MON OCT 26 2015 High pressure anchored over the Great Lakes will continue to control the weather across central Illinois today, providing mostly sunny and dry conditions.
HIGH PRESSURE WILL CONTINUE TO MOVE OUT OF THE REGION MONDAY AS WAVES OUT OF THE SOUTHERN ROCKIES AND PACIFIC NORTHWEST EMERGE.
SHOWERS ACCOMPANYING A CLOSED UPPER LOW IN EASTERN WASHINGTON WILL CONTINUE TO SPREAD INTO NORTHERN PORTIONS OF OUR FORECAST AREA TODAY. IT WILL ALSO BE COOLER TODAY WITH NEAR NORMAL TEMPERATURES. UPPER TROUGH CURRENTLY PASSING THROUGH IDAHO HAS PROVED WETTER THAN FORECAST WITH SHOWERS EXTENDING AS FAR SOUTH AS THE SNAKE RIVER. TROUGH WILL EXIT WESTERN IDAHO BY SUNRISE BUT THE MAIN UPPER LOW. STRONG NNWLY FLOW ALOFT WILL USHER IN COOLER AIR WITH HIGH TEMPS TODAY AND TUESDAY RANGING FROM NEAR 50 IN THE NRN MOUNTAINS TO THE LOWER 60S IN THE TREASURE VALLEY. LOWS TONIGHT WILL BE COLDER THAN PAST FEW NIGHTS RANGING FROM THE 20S IN THE MOUNTAINS TO MID 30S WITH PATCHY FROST IN THE LOWER AG VALLEYS. AS THE SHORT-LIVED UPPER LEVEL RIDGE MOVES EAST.
1022 AM EDT MON OCT 26 2015 HIGH PRESSURE OVER NY STATE WILL MOVE OFF THE NEW ENGLAND COAST TUE.
DRIER AND SLIGHTLY WARMER CONDITIONS ARE EXPECTED TODAY AS HIGH PRESSURE BRIEFLY BUILDS BACK OVER THE AREA.
The highest chances remain forecast across far eastern Oklahoma and western Arkansas.
1025 AM EDT MON OCT 26 2015 HIGH PRESSURE WILL RESULT IN DRY CONDITIONS AND SEASONABLE TEMPERATURES TODAY. STRENGTHENING SOUTHERLY FLOW AHEAD OF AN APPROACHING COLD FRONT WILL PULL ABUNDANT MOISTURE UP INTO THE AREA THROUGH MID WEEK.
NON-TROPICAL LOW PRESSURE OVER THE LOUISIANA COAST WILL REMAIN NEARLY STATIONARY TODAY BEFORE MOVING NORTHEAST INTO THE TENNESSEE VALLEY ON TUESDAY. AS HIGH PRESSURE OVER THE WESTERN ATLANTIC WATERS MOVES FURTHER EAST INTO THE ATLANTIC WATERS. A COLD FRONT ASSOCIATED WITH THE LOW WILL ALSO MOVE SLOWLY EAST FROM THE CENTRAL GULF WATERS INTO THE EASTERN GULF WATERS. THE LOW WILL WEAKEN WHILE MOVING NORTHEAST INTO THE GREAT LAKES REGION LATE THIS WEEK. AS THE COLD FRONT MOVES EASTWARD INTO SOUTH FLORIDA BEFORE STALLING OUT. AS HIGH PRESSURE BUILDS INTO THE SOUTHEASTERN UNITED STATES FROM THE NORTH.
LOW PRESSURE ALOFT IS KEEPING THE AIRMASS COOL AND UNSETTLED. A COLD FRONT WILL APPROACH THE CUT BANK AREA BY 06Z TUESDAY AND THE GREAT FALLS AREA BY 12Z TUE.
PERIODS OF MID AND HIGH LEVEL CLOUDS ARE ANTICIPATED FOR THIS CYCLE AS A WEAK UPPER LEVEL LOW PRESSURE SYSTEM TRACKS ACROSS THE SRN HIGH PLAINS. A SFC TROF OF LOW PRESSURE WILL MOVE INTO NWRN SECTIONS LATE TONIGHT. BUT CLOUDS STREAMING INTO THE PANHANDLES HAVE KEPT TEMPERATURES STEADY IN THE LOW 40S SO FAR IN MOST AREAS DESPITE THE RELATIVELY LIGHT WINDS. A WEAK COLD FRONT WILL APPROACH THE OKLAHOMA PANHANDLE TONIGHT AND BRING WITH IT A SLIGHT CHANCE FOR SHOWERS. A FAIRLY SIGNIFICANT AREA OF DRY AIR IN THE LOW AND MID LEVELS MAY BE ENOUGH TO PREVENT ANYTHING FROM MAKING IT TO THE GROUND.
SOUTHERN WISCONSIN WILL REMAIN UNDER A NARROW HIGH PRESSURE RIDGE FOR THE NEXT 24-36HRS.
743 AM EDT MON OCT 26 2015 HIGH PRESSURE EXTENDING OVER THE AREA TODAY WILL MOVE EAST TO NEW ENGLAND TONIGHT AND EARLY TUESDAY.
637 AM CDT MON OCT 26 2015 THE CLOUD SHIELD ASSOCIATED WITH THE LOW PRESSURE CENTER IN SOUTHERN LOUISIANA IS SLOWLY MOVING OFF TO THE EAST. THE COMPACT UPPER LOW OVER E TX/LA WILL PICK UP SPEED MOVING EAST TODAY WITH WRAP-AROUND LOW CLOUDS EXPECTED TO DISSIPATE OVER CENTRAL AND EASTERN COUNTIES BY MIDDAY.
Clouds should decrease on Tuesday as high pressure returns briefly to the Inland Northwest.
THE SFC AND UPPER LEVEL LOW IS CURRENTLY LOCATED OVER SOUTHERN LOUISIANA AND WILL SLOWLY DRIFT NE TODAY.
MOSTLY SUNNY AND SEASONABLY WARM TODAY WITH HIGH PRESSURE OVER THE REGION.
727 AM EDT MON OCT 26 2015 AVIATION A LARGE HIGH PRESSURE SYSTEM WILL CONTINUE TO MOVE EAST THROUGH THE CENTRAL GREAT LAKES TODAY ALLOWING FOR WARMER AIR TO MOVE INTO THE AREA.
BATCHES OF SCATTERED SHOWERS WERE MOVING INLAND ACROSS SE GA ALONG AND SOUTH OF A COASTAL TROUGH AXIS THAT EXTENDED SOUTHWARD JUST OFFSHORE OF THE SE ATLANTIC SEABOARD. ADDITIONAL SHOWERS WERE STARTING TO POP OFFSHORE OF THE NE FL COAST IN THE VICINITY OF THE TROUGH AXIS. CLOUDY SKIES WILL PREVAIL OVER SE GA AS THE COASTAL TROUGH AXIS DRIFTS INLAND AND LINGERS WHICH WILL KEEP MAX TEMPS MILD IN THE 70S WHILE MORE INSOLATION OVER INLAND NE FL WILL ENABLE TEMPS TO RISE INTO THE LOWER 80S WITH PASSING LIGHT SHOWERS HOLDING OFF INTO THE AFTN. WILL CONTINUE TO HIGHLIGHT THE HIGHER WATER LEVELS IN THE HWO AND SOCIAL MEDIA GRAPHICAST PRODUCTS AND REFRAIN FROM AN ADVISORY FOR THE COAST BUT WILL RE-EXAMINE POTENTIAL NEED THIS AFTERNOON.
/issued 259 AM CDT MON OCT 26 2015/ Brief upper ridging over the area today will provide mild wx for W TX and SE NM. A weak trough will move across NM and the TX Panhandle tonight but have little affect on the region.
RAP ANALYSIS SHOWS AN H100-H70 RIDGE AXIS EXTENDING FROM THE CAROLINA COAST THRU THE FL STRAITS GENERATING A 15-20KT E/SE FLOW THRU 10KFT. A STORM SYSTEM CENTERED OVER THE LWR MS VALLEY WITH A FRONTAL BOUNDARY TRAILING S INTO THE YUCATAN PENINSULA WILL REMAIN NEARLY STATIONARY AS THE RIDGE BLOCKS OUT ANY EWD ESCAPE ROUTE. RIDGE AXIS EXTENDING FROM THE CAROLINA COAST THRU THE FL STRAITS WILL MAINTAIN A MODERATE E/SE BREEZE ACRS THE LCL ATLC. BORDERLINE SCA CONDS PSBL THRU THE REMAINDER OF THE DAY AS THE RIDGE AXIS DRIFTS SLOWLY EWD AHEAD OF A FRONTAL BOUNDARY OVER THE CENTRAL GOMEX.
1124 AM CDT MON OCT 26 2015 AN AREA OF LOW PRESSURE CONTINUES OVER LOUISIANA WHICH WILL TRACK SLOWLY TO THE NORTHEAST TODAY INTO MISSISSIPPI. CLOUDS AND RAIN WILL SPREAD TO THE NORTHEAST AS THEY ROTATE AROUND THE LOW THROUGH THE AFTERNOON.
DEEP LOW PRESSURE SYSTEM CONTINUES CHURNING OVER THE LOWER MISSISSIPPI VALLEY THIS MORNING WITH INCREMENTAL SHIFT NORTHEAST TOWARD THE VIEWING AREA.
Temps at 1030 am were in the low to mid 50s with east winds 8-16 mph and gusts 18-24 mph from I-55 southeast. High pressure anchored over the Great Lakes will continue to control the weather across central Illinois today, providing mostly sunny and dry conditions.
In the meantime, high plains lee troughing will continue today. A cold front will traverse across the state. Have the highest pops along west-central Kansas, where the frontogenesis the most most pronounced in addition in closer proximity to the 100-110 kt 250-hPa passing jet streak. Strongest winds will be from late morning through late afternoon with speeds in the 14 to 18 knot range sustained and gusts in the lower to mid 20s.
WINDS SHOULD GRADUALLY EASE FROM THE 20 TO 30 KNOT WITH HIGHER GUST CONDITIONS TONIGHT AS THE LOW BEGINS TO PULL AWAY FROM THE AREA. EXPECT TO SEE SCATTERED BANDS OF LIGHT TO MODERATE RAIN SHOWERS THROUGH THE DAY AND INTO TONIGHT AS THE LOW MOVES THROUGH.
908 AM EDT MON OCT 26 2015 HIGH PRESSURE EXTENDING OVER THE AREA TODAY WILL MOVE EAST TO NEW ENGLAND TONIGHT AND EARLY TUESDAY.
732 AM EDT MON OCT 26 2015 1031MB HIGH PRESSURE PRESENTLY OVER NORTHERN LAKE HURON. A WARM FRONT IS STRETCHED ACROSS SE SD. HIGH PRESSURE WILL REACH LK ONTARIO BY 18Z. PROBABLY MORE IMPORTANT IS THAT THE MID-LEVEL OUTRUNS THE LOW-LEVEL INFLOW.
TEMPERATURES ARE IN THE LOWR TO MID 80S ALONG THE ISLAND CHAIN.
934 AM MDT MON OCT 26 2015 UPPER LEVEL TROF ACROSS EASTERN UTAH WITH MAIN BAND OF SHOWERS MOVING ACROSS MOUNTAINS AND WESTERN COLORADO.
ISSUED BY NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 900 AM PDT MON OCT 26 2015 SLIGHTLY WARMER TODAY UNDER WEAK HIGH PRESSURE WITH PATCHY EARLY MORNING LOW CLOUDS AND FOG NEAR THE COAST.
729 AM EDT MON OCT 26 2015 SCATTERED AREAS OF -RA/-SHRA WILL CONTINUE TO OVERSPREAD THE REGION TODAY AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM.
1039 AM EDT MON OCT 26 2015 HIGH PRESSURE WILL BRING FAIR WEATHER THROUGH TUESDAY AFTERNOON.
THE SFC AND UPPER LEVEL LOW IS CURRENTLY LOCATED OVER SOUTHERN LOUISIANA AND WILL SLOWLY DRIFT NE TODAY. LOW PRESSURE IN SOUTHERN LA WILL BE MOVING NORTHWARD SLOWLY INTO WESTERN MS.
UPPER LOW SHIFTS INTO THE NORTHERN PLAINS. AS THE LOW TREKS UP THE STATIONARY FRONT THROUGH THIS EVENING.
BY LATE MORNING, THE BOUNDARY IS THEN EXPECTED TO PUSH TROUGH THE SAN FRANCISCO BAY AREA AND MAY ALSO RESULT IN LIGHT RAIN. MEANWHILE, DRY WEATHER CONDITIONS ARE FORECAST THROUGH THE DAY FOR THE REMAINDER OF THE SAN FRANCISCO/MONTEREY BAY AREA AS HIGH PRESSURE BUILDS OFF OF THE WEST COAST AND THE AFOREMENTIONED FRONT WASHES OUT. DRY CONDITIONS ARE EXPECTED OVER THE ENTIRE REGION BY LATE THIS AFTERNOON, THROUGH NEW YEARS DAY AND INTO THE BEGINNING OF THE UPCOMING WEEKEND AS THE RIDGE SHIFTS TOWARD THE COAST AND A REX BLOCK DEVELOPS OVER THE WESTERN CONUS.
807 AM EST WED DEC 30 2015 WEAK HIGH PRESSURE PASSES THROUGH THE REGION TODAY. AND THEN LOW PRESSURE TRACKS SOUTH OF LONG ISLAND TONIGHT. HIGH PRESSURE THEN BUILDS INTO THE REGION FROM THE WEST FROM THURSDAY THROUGH THE END OF THE WEEK.
Freezing fog impacts the region beginning Thursday night. The trough of low pressure responsible for the widespread light snow will continue to move off to the east today. The upper level flow will become northerly as the low exits the region allowing for a drier air mass to be introduced into the Northern Rockies.
LOW CLOUDS AND FREEZING FOG ARE CAUSING LIFR CONDITIONS AT KAMA WITH IMPACTS CONTINUING THROUGH AROUND 18Z TODAY. /ISSUED 505 AM CST WED DEC 30 2015/ SOUTHERLY FLOW HAS ALLOWED ENOUGH MOISTURE ADVECTION TO OCCUR IN THE LOW LEVELS THAT FREEZING DRIZZLE STARTED IN THE EARLY OVERNIGHT HOURS OVER PORTIONS OF THE SOUTHERN AND EASTERN TEXAS PANHANDLE AND THE EASTERN OKLAHOMA PANHANDLE. THIS HAS NOW GIVEN WAY TO FREEZING FOG. THE LACK OF SUN FOR A GOOD PORTION OF THE DAY WILL LIMIT DAYTIME HEATING AND KEEP THE PANHANDLES SLIGHTLY COOLER TODAY THAN YESTERDAY. THURSDAY WILL ALSO BE CHILLY AS CLOUD COVER HANGS AROUND FOR ANOTHER DAY DUE TO A LEE SIDE TROUGH BUILDING INTO THE WESTERN PORTION OF THE PANHANDLES.
945 AM EST WED DEC 30 2015 LOW PRESSURE WILL BRING SCATTERED RAIN SHOWERS THIS AFTERNOON. A COLD FRONT WILL CROSS THE AREA. THIS WILL QUICKLY DROP TEMPERATURES BELOW FREEZING THROUGH THE COLUMN BY MORNING AS MOISTURE PEELS OFF TO THE EAST. A FEW FLURRIES WILL BE POSSIBLE IN THE RIDGES. NOTHING MORE THAN A VERY LIGHT SNOW SHOWER OR FLURRY WITH NO ACCUMULATION WILL BE EXPECTED IN THE NORTHEASTERN PORTIONS OF THE AREA NOR THE RIDGES.
DEEP LAYER ATL RIDGE EXTENDING ACROSS FL REMAINS IN CONTROL OF THE WEATHER PATTERN WITH A WARM S/SE FLOW PERSISTING. DEEP LYR RIDGE AXIS DRAPED OVER THE FL PENINSULA WILL MAINTAIN THESE FAVORABLE BOATING CONDITIONS THESE CONDITIONS THRU DAYBREAK THU.
A SOUTHWEST MID LEVEL FLOW WILL COUPLE WITH SYNOPTIC SCALE HIGH PRESSURE PUSHING SOUTH OVER THE AREA FROM THE PLAINS TO DELIVER COOL. AS THE COOLER AIR FILTERS IN AT LOW LEVELS AND LIFTS WARMER AIR. HIGH TEMPS TODAY WILL RUN FROM THE UPPER 50S ACROSS THE RANCHLANDS TO THE MID 60S FOR THE LOWER VALLEY.
MANY INTERIOR VALLEY LOCATIONS ARE ACTUALLY NEAR OR BELOW FREEZING WHICH IS LIKELY RESULTING IN ICY/SNOW COVERED ROADS WITH THE WORST CONDITIONS NORTH OF UKIAH. AS A DEEP TROUGH REMAINS IN PLACE OVER THE INTER-MOUNTAIN WEST. AN UPPER LOW WILL RETROGRADE BACK OVER THE GREAT BASIN ON THURSDAY.
WEAK HIGH PRESSURE ACROSS THE COMMONWEALTH. LOW PRESSURE SLIDES TO OUR SOUTHEAST TONIGHT.
model sounding indicate the low ceilings trying to scatter out. The deep trough over much of the CONUS currently will slide to the Eastern Seaboard later this week.
THE MOISTURE SURGE HAS ARRIVED AS A WARM FRONT AND IS SAMPLED AS A 12 F TEMPERATURE INVERSION JUST ABOVE THE SFC TO 930 MB. /ISSUED 338 AM CST WED DEC 30 2015/ ISENTROPIC LIFT UNDERWAY AS WARM FRONT IS INDICATED ON SURFACE ANALYSIS FROM MOBILE BAY TO MOUTH OF THE MISSISSIPPI RIVER TO PADRE ISLAND TEXAS. RATHER RICH WARM SECTOR AIR POISED JUST OFF THE MOUTH OF THE MS RIVER AND MAY ACTUALLY ENCROACH LAND AREAS BRIEFLY THIS MORNING BEFORE BEING FLUSHED OUT BY SHALLOW HIGH PRESSURE SURGE TO BEGIN DOWNWARD MOMENTUM TRANSPORT TO SHUT DOWN PRECIPITATION THIS AFTERNOON.
GENTLE S TO SW WINDS THROUGH THURSDAY WILL SHIFT TO THE NORTH AND INCREASE THURSDAY NIGHT WITH A COLD FRONTAL PASSAGE.
The main aviation concern will be the low ceilings and visibility this morning due to some freezing fog.
But with dry air wrapping south into Ern Wa on the back side of the upper low, the fcst becomes even more of a challenge as skies begin to clear. This will be the case for towns outside of the Cntrl Idaho Panhandle and the east slopes of the Cascades from essentially Wed Nt through Thurs Nt as the upper ridge currently over Srn BC strengthens builds across nrn Wa.
Temperatures ranged from the upper 30s to the lower 40s. Cloudy skies will keep temperatures down today (but above seasonal normals) with highs ranging from the lower-mid 40s in the north/northwest to the lower- middle 50s in the southeast. This should allow temperatures to fall into the lower 30s for most areas.
THE DEPTH OF THE LOW LEVEL INVERSION AND EXTENT OF THESE STRATUS UPSTREAM SUGGESTS AN OVERALL PERSISTENCE FORECAST FOR CEILING HEIGHTS WELL INTO THE AFTERNOON. 925MB TEMPERATURES AROUND -5C SUPPORT INHERITED HIGH TEMPS IN THE LOW TO MID 30S.
547 AM EST WED DEC 30 2015 A WAVE OF LOW PRESSURE MOVES ACROSS THE EASTERN HALF OF WEST VIRGINIA AND SOUTHWEST VIRGINIA TODAY. HIGH PRESSURE DOMINATES MUCH OF THE FIRST WEEK OF THE NEW YEAR. WEAK LOW PRESSURE WILL LIFT OUT OF THE SOUTHEAST TODAY. WITH THE TRACK OF THE LOW JUST TO OUR SE BY LATE THIS AFTERNOON. COLDER AIR AND RIDGING STARTS TO MOVE IN AFTER MIDNIGHT AND ANY LEFT OVER SHOWERS MAY MIX OR CHANGE OVER TO SNOW SHOWERS TOWARDS DAWN IN THE HIGHER ELEVATIONS OF THE WV MOUNTIANS.
824 AM EST WED DEC 30 2015 WEAK HIGH PRESSURE WILL BUILD OVER THE AREA BRIEFLY TODAY. A BROAD WEAK AREA OF LOW PRESSURE WILL MOVE THROUGH THE REGION TONIGHT BRINGING MIXED PRECIPITATION OVERNIGHT.
403 AM CST WED DEC 30 2015 (Today and tonight) Temperature and dewpoint spreads have dropped to near zero early this morning, and still think that patchy fog and freezing fog will develop by sunrise.
THIS IS OUT AHEAD OF THE MAIN UPPER LEVEL LOW. THIS WILL ALLOW FOR WARMER AIR AND GULF MOISTURE TO ADVANCE TO THE NORTHEAST UP THE APPALACHIAN FRONT THROUGH THE DAY. AND ALL PRECIPITATION TODAY WILL BE RAIN AS WE ARE STARTING ABOVE FREEZING EVERYWHERE. A COLD FRONT WILL CROSS THE AREA. THIS WILL QUICKLY DROP TEMPERATURES BELOW FREEZING THROUGH THE COLUMN BY MORNING AS MOISTURE PEELS OFF TO THE EAST. A FEW FLURRIES WILL BE POSSIBLE IN THE RIDGES. NOTHING MORE THAN A VERY LIGHT SNOW SHOWER OR FLURRY WITH NO ACCUMULATION WILL BE EXPECTED IN THE NORTHEASTERN PORTIONS OF THE AREA NOR THE RIDGES.
MANY INTERIOR VALLEY LOCATIONS ARE NEAR OR BELOW FREEZING WHICH IS LIKELY RESULTING IN ICY ROADS WITH THE WORST CONDITIONS NORTH OF UKIAH. AS A DEEP TROUGH REMAINS IN PLACE OVER THE INTER-MOUNTAIN WEST. AN UPPER LOW WILL RETROGRADE BACK OVER THE GREAT BASIN ON THURSDAY.