Aikyam-Lab/Synoptic-Bench huggingface dataset:
THESE SHOWERS WERE IN A CONVERGENT ZONE ALONG AND NORTH OF A WARM FRONT EXTENDING EASTWARD ACROSS CENTRAL ALABAMA. A SECONDARY WEAK COLD FRONT WAS MOVING EAST THROUGH SOUTHEAST MISSOURI AND INTO EASTERN ARKANSAS. TEMPS SHOULD BE MORE IN LINE WITH THE SLIGHTLY COOLER GFS HIGH TEMP FORECAST FOR FRIDAY. THE ADVERTISED RIDGE OF HIGH PRESSURE WILL FINALLY MOVE EAST- SOUTHEAST INTO THE TENNESSEE VALLEY REGION BY FRIDAY AFTERNOON WITH CLEARING SKIES EXPECTED ESPECIALLY BY FRIDAY EVENING. EXPECT TEMPS TO BE SLIGHTLY COOLER THAN NAM TEMP GUIDANCE AND HAVE GONE MORE IN LINE WITH THE SLIGHTLY COOLER GFS MODEL GUIDANCE FOR FRIDAY NIGHT LOW TEMPS.
640 PM EST THU MAR 3 2016 LOW PRESSURE CENTERED WELL TO THE SOUTH OF THE STATE WILL PULL EAST AND OFF THE COAST ON FRIDAY.
900 PM CST THU MAR 3 2016 WX MAP SHOWS COLD FRONT APPROACHING THE SE TX/SW LA COAST THIS EVENING. MUCH DRIER AND SLIGHTLY COOLER AIR SURGING IN BEHIND THE FRONT WILL YIELD TEMPERATURES TONIGHT AND TOMORROW MUCH CLOSER TO SEASONAL NORMALS. BUT WILL LEAVE BEHIND A MORE AMPLIFIED RIDGE BY SAT NIGHT.
As the anticyclone slides east overnight, winds will spin around the dial, becoming southerly by sunrise.
338 PM MST THU MAR 3 2016 TONIGHT HIGH PRESSURE AND DRY CONDITIONS WILL PREVAIL. THE 500 MB RIDGELINE WILL MIGRATE OVER AND EAST OF THE CWA BY THE END OF THE NIGHT. THE RIDGE IS DIRTY WITH HIGH CLOUDS AND THESE WILL SLOWLY THICKEN TONIGHT AS WELL. THESE CLOUDS WILL HELP LOW TEMPS STAY 2 TO 4 DEGREES WARMER TONIGHT COMPARED TO THIS MORNING'S LOWS. BUT HIGH CLOUDS AHEAD OF THE NEXT TROUGH WILL ALREADY BE MOVING INTO EASTERN UTAH FRIDAY NIGHT.
710 PM EST THU MAR 3 2016 AVIATION AN AREA OF HIGH PRESSURE OVER SOUTHERN ILLINOIS WILL TRACK UP THE OHIO VALLEY TONIGHT AND FRIDAY.
LOWS IN THE LOWER/MID 50S WILL GENERALLY PREVAIL. CIGS DECREASING AS THE COLD FRONT CROSSES THE AREA AFT 06Z. WINDS WILL INCREASE AHEAD OF A COLD FRONT.
AHEAD OF A DEEPENING LEE CYCLONE AND TRAILING COLD FRONT WHICH WILL PROGRESS INTO THE WRN DAKOTAS AND WRN NEB TONIGHT. THE ASSOCIATED SURFACE COLD FRONT WILL ADVANCE FROM THE HIGH PLAINS EWD THROUGH OUR AREA DURING THE AFTERNOON TO EARLY EVENING. THE TIMING OF THE FRONT WILL ALLOW FOR A MODEST WARM-UP --COMPARED TO TODAY-- WITH THE HIGHEST AFTERNOON TEMPERATURES /UPPER 50S TO LOWER 60S/ EXPECTED OVER SERN NEB/SWRN IA. THIS FRONTAL PASSAGE WILL BE DRY ACROSS OUR AREA WITH THE HIGHEST PROBABILITY FOR MEASURABLE PRECIPITATION REMAINING TO THE NORTH.
612 PM EST THU MAR 3 2016 AN AREA OF LOW PRESSURE WILL MOVE OFF TO THE EAST TONIGHT. WEAK HIGH PRESSURE WILL BUILD IN FOR FRIDAY.
A HIGH PRESSURE RIDGE WILL DRIFT INTO THE AREA OVERNIGHT AHEAD OF A LOW PRESSURE SYSTEM OVER THE NORTHERN PLAINS.
High pressure is then forecast to drift into the region Friday morning with a gradual clearing trend working its way into the forecast area. 19z/1pm surface analysis shows a 1010mb low over Arkansas, with a trough axis extending northward into central Illinois. Light rain continues to fall in the vicinity of the trough, but has now pushed mainly east of the Illinois River. As winds become northerly on the back side of the trough, the atmosphere will cool sufficiently to support a light rain/snow mix. Once the trough pushes off to the east, cloudy and cool conditions will prevail for the remainder of the night with low temperatures dropping into the upper 20s and lower 30s. High pressure will move quickly across the state Friday with partly sunny skies for the late morning and early afternoon and slightly milder temperatures.
High pressure will continue pushing into the area and models are hinting at some fog developing across our southeast half of the CWA. Heading into Friday, the high pressure will shift off to the east and upper level flow will become more westerly. With an increasing surface pressure gradient out west, there will be some gusty winds and will also see some afternoon humidity values dipping into the low to mid 30s.
HIGH PRESSURE WILL THEN SETTLE OVER THE REGION AND SCOUR OUT ALL LOW CLOUDS AND MAINTAIN LIGHT WIND THROUGH FRIDAY AFTERNOON. NORTHEAST TO NORTH FLOW IS STILL EXPECTED TO PRESERVED MVFR CEILING AT DTW LONGER THAN OTHER SITES DURING THE NIGHT BEFORE FINALLY BEING SCOURED OUT BY HIGH PRESSURE MID FRIDAY MORNING. THE PASSING UPPER WAVE WILL QUICKLY SHUNT MOISTURE EAST OF THE AREA WHILE THE GRADIENT REMAINS LIGHT BETWEEN WEAK HIGH PRESSURE AND THE BROAD WEAK LOW TO THE SOUTH. WIND WILL BE NIL WITH HIGH PRESSURE CENTERED DIRECTLY OVERHEAD.
1043 PM EST THU MAR 3 2016 A LOW PRESSURE SYSTEM WILL CROSS THE REGION TONIGHT. COOLER AND DRIER AIR WILL BUILD INTO THE REGION FRIDAY INTO THE WEEKEND. AN UPPER LEVEL SHORT WAVE TROUGH OVER ALABAMA THIS EVENING WILL CONTINUE TO MOVE EAST ACROSS THE SOUTHEASTERN STATES OVERNIGHT. AS THE UPPER LEVEL TROUGH MOVES TO OUR EAST RAIN IS EXPECTED TO END FROM WEST TO EAST.
have also boosted low temperatures a couple of degrees in most areas with lows in the low to mid 30s areawide.
AND THE LOW LEVEL RIDGE MOVING OFF WILL MAKE IT HARD FOR WHOLESALE CLEARING TO GET ESTABLISHED. THE APPROACHING NORTHWESTERLY SHORT WAVE AND WARM FRONT COULD BRING SPOTTY LIGHT PRECIPITATION FRIDAY MORNING. WHICH WOULD NOT BE SNOW BUT FREEZING RAIN OR SLEET UNTIL WARMING TEMPERATURES MAKE IT RAIN.
18Z SFC DATA HAS HIGH PRESSURE OVER THE GREAT LAKES THROUGH THE PLAINS. AN INFERRED WEAK LOW WAS NEAR WEST SOUTHWEST OF KSTL WITH AN INVERTED TROF NORTHEAST TO NEAR KCHI. HIGH PRESSURE WILL SLOWLY MOVE ACROSS THE AREA RESULTING IN WEAK WINDS AND DRY CONDITIONS. QUIET AND DRY CONDITIONS WILL BE SEEN ACROSS THE AREA FRIDAY MORNING AS THE HIGH MOVES INTO THE OHIO VALLEY AS THE NEXT SYSTEM APPROACHES FROM THE NORTHERN PLAINS. THE BETTER FORCING IS FROM MINNESOTA INTO WISCONSIN AND THERE ARE QUESTIONS REGARDING IF THE LOWER ATMOSPHERE WILL SATURATE ENOUGH TO GENERATE PRECIPITATION. AS MOISTURE BARELY BEGINS TO INTERACT WITH THE LOW BEFORE IT MOVES EAST OF THE CWA. IT DOES APPEAR DRIZZLE OR FREEZING DRIZZLE MAY OCCUR AFTER MIDNIGHT.
UPPER RIDGE DRIFTS EASTWARD ACROSS THE AREA OVERNIGHT. THOUGH A FEW SPOTS IN THE LEE OF THE EASTERN MOUNTAINS/WEST OF I25 WILL LIKELY STAY RATHER MILD WITH TEMPS REMAINING ABOVE FREEZING INTO FRI MORNING. PUSHING A RATHER WEAK COLD FRONT SOUTH THROUGH THE PLAINS AROUND MIDDAY.
832 PM EST THU MAR 3 2016 SNOW IS EXPECTED WITH LOW PRESSURE TONIGHT.
WILL CONTINUE WITH THE WINTER WEATHER ADVISORY SINCE SENSORS ARE STILL PICKING UP LIGHT SNOWFALL IN THE HIGHER ELEVATIONS, GENERALLY ABOVE 2500 FEET. CHATTANOOGA AIRPORT, TN 37 53 34 63 / 40 10 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 35 48 33 59 / 60 10 0 10 OAK RIDGE, TN 36 49 34 59 / 50 10 0 10 TRI CITIES AIRPORT, TN 32 47 31 55 / 70 10 0 20 TN.
525 PM EST THU MAR 3 2016 A LOW PRESSURE SYSTEM WILL CROSS THE REGION TONIGHT. COOLER AND DRIER AIR WILL BUILD INTO THE REGION FRIDAY INTO THE WEEKEND. CATEGORICAL POPS IN ORDER AS THE LOW PRESSURE OVER THE GULF COAST STATES PUSHES EAST.
DESPITE SURFACE TEMPERATURES 2-8F DEGREES ABOVE FREEZING. A DISTINCT WARM FRONT STRETCHES FROM THE LOW ACROSS SOUTH CENTRAL ALABAMA. THE REST OF THE WEEK AND WEEKEND WILL BE DRY AS HEIGHTS INCREASE ACROSS THE AREA AND HIGH PRESSURE PUSHES ACROSS MUCH OF THE EASTERN CONUS.
635 PM EST THU MAR 3 2016 UPDATE AN AREA OF HIGH PRESSURE OVER SOUTHERN ILLINOIS WILL TRACK UP THE OHIO VALLEY TONIGHT AND FRIDAY.
HIGHS ON FRIDAY WILL BE NEAR OR A LITTLE WARMER COMPARED TO TODAY.
CURRENTLY OCCURRING AHEAD OF THE LOW PRESSURE CENTER. THE ASSOCIATED COLD FRONT WILL BE DROPPING THROUGH THE NORTHERN PENINSULA IN THE PRE DAWN HOURS. BREEZY NW WINDS WILL TURN NORTH ALONG THE COAST DURING THE DAY AS A HIGH PRESSURE RIDGE BUILDS OVER THE SOUTHEAST STATES. HIGHS WILL RANGE FROM THE MID 70S ALONG THE VOLUSIA COAST TO THE LOWER 80S OKEECHOBEE/TREASURE COAST. SOUTHWEST FLOW WILL INCREASE AS DEEPENING LOW PRESSURE MOVES QUICKLY ACROSS THE DEEP SOUTH THEN NORTHEAST ALONG THE CAROLINA COAST. WINDS WILL VEER TO THE NW BEHIND THE FRONT THEN NORTH IN THE AFTERNOON AS HIGH PRESSURE BUILDS TO THE EASTERN SEABOARD BEHIND DEPARTING LOW PRESSURE CENTER.
LATEST NSSL WRF SYNTHETIC SATELLITE IMAGERY INDICATING AT LEAS SOME PARTIAL CLEARING TONIGHT AS SURFACE/MID-LEVEL RIDGING DRIFT ACROSS THE REGION. ATTENTION THEN TURNS TO ANOTHER TROUGH OF LOW PRESSURE ON WATER VAPOR SATELLITE IMAGERY THIS AFTERNOON PUSHING ACROSS THE NORTHERN ROCKIES OVER ALBERTA. SNOW RATE AND TEMPERATURES IN THE LOWER BOUNDARY/SURFACE WILL DICTATE PRECIPITATION TYPE AS BUFKIT SOUNDINGS SHOW ALL SNOW THROUGH THE COLUMN. AND EVEN SOME FREEZING DRIZZLE LATE AS TEMPERATURES FALL INTO THE UPPER 20S/LOWER 30S.
932 PM EST THU MAR 3 2016 COLD HIGH PRESSURE IN PLACE WILL KEEP TEMPERATURES COLD THE REST OF TODAY AND OVERNIGHT. HIGH PRESSURE WILL THEN RETURN FOR THE WEEKEND INTO THE BEGINNING OF THE WEEK. BUT WILL SEE SOME CLOUDS ACROSS OUR SOUTHERN ZONES AS A LOW PRESSURE SYSTEM PASSES WELL OFF THE COAST OF NEW ENGLAND ON FRIDAY. TEMPERATURES ON FRIDAY WILL BE WARMER THAN TODAY. THE WEEKEND SHOULD BE FAIRLY BENIGN AS HIGH PRESSURE DOMINATES THE FORECAST FOR THE REST WEEK HEADED INTO THE WEEKEND.
A NEBULOUS RIDGE IS ALIGNED ACROSS EXTREME SOUTH FLORIDA AND THE KEYS. GIVEN A BROAD AND WEAK RIDGE NEARBY AND A COLD FRONT DROPPING DOWN EXTREME NORTH FLORIDA. THIS IS ALSO THE LOWEST TEMPERATURE EVER RECORDED IN MARCH.
818 PM EST THU MAR 3 2016 A LOW PRESSURE SYSTEM WILL CROSS THE REGION TONIGHT. COOLER AND DRIER AIR WILL BUILD INTO THE REGION FRIDAY INTO THE WEEKEND. SHORT WAVE TROUGH OVER MISSISSIPPI AT 01Z WILL CONTINUE TO MOVE EAST ACROSS THE SOUTHEASTERN STATES OVERNIGHT. AS THE UPPER LEVEL TROUGH MOVES TO OUR EAST RAIN IS EXPECTED TO END FROM WEST TO EAST.
WATER VAPOR IMAGERY AND 05/00Z UPPER-AIR PLOTS SHOW THE UPPER LOW SPINNING IN THE GENERAL VICINITY OF THE CENTRAL CALIFORNIA COAST. AS THE UPPER LOW IS PROGGED TO MAKE EASTWARD PROGRESSION LATE TONIGHT AND INTO FRIDAY. CHANCE OF SHOWERS SPREADING SOUTH TO NORTH AS THE UPPER LOW TO OUR NORTHWEST CONTINUES TO RESULT IN SOUTH TO SOUTHWEST WINDS ALOFT INCREASING MOISTURE THROUGH THE NIGHT. WITH ADDITIONAL DEVELOPMENT OUT WEST AHEAD OF THE UPPER LOW AND SPREADING EASTWARD THROUGH FRIDAY.
/ISSUED 928 PM CDT THU JUN 4 2015/ WEAK PRESSURE GRADIENT AT THE SFC WITH RIDGING ALOFT WILL CONTINUE OVERNIGHT. AN ISLTD TSTM AND A FEW SHOWERS HAVE FORMED ACRS THE LOWER ATCHAFALAYA BASIN AND THE SE TX COAST ALONG A WEAK BOUNDARY/CONVERGENCE ZONE BETWEEN THE NLY INLAND FLOW AND DEVELOPING SEABREEZE.
MAINTAINED AN ISOLATED TO SCATTERED MENTION OF SHOWERS ACROSS WESTERN INTO SOUTH CENTRAL NORTH DAKOTA WITH MULTIPLE IMPULSES PROPAGATING ATOP THE CREST OF THE CENTRAL CONUS UPPER LEVEL RIDGE. TONIGHT AND FRIDAY WE REMAIN UNDER HIGH PRESSURE AT THE SURFACE AND MID LEVELS OF THE ATMOSPHERE. HOWEVER WE WILL STILL SEE IMPULSES WORKING THEIR WAY THROUGH THE UPPER LEVEL RIDGING.
MID LEVEL RIDGE HOLDS OVER THE FA TOMORROW. LEAD WAVE FROM UPPER LOW OVER SW US UPPER LOW WILL LIFT NE INTO THE NORTHERN HIGH PLAINS FRIDAY NIGHT.
THE LATEST NAM GUIDANCE EVEN DELAYS PRECIP UNTIL THE COLD FRONT ARRIVES LATER FRIDAY AFTERNOON. THE COLD FRONTAL PASSAGE NOW APPEARS OUR MAIN TRIGGER FOR PRECIP OVER THE NEXT 24 HOURS, SO WILL REDUCE POPS AFTER MIDNIGHT TO HIGHLIGHT THE DELAYED ONSET OF STORM CHANCES. THUNDERSTORMS HAVE BEEN DEVELOPING AND TRACKING ALONG THE PERIPHERY OF AN UPPER-LEVEL RIDGE OVER THE CENTRAL PLAINS FOR THE PAST COUPLE OF DAYS.
1236 AM EDT FRI JUN 5 2015 HIGH PRESSURE OVERHEAD MOVES OFFSHORE TONIGHT AND FRIDAY. A COLD FRONT WILL APPROACH FROM THE NORTH AND MOVE SOUTH INTO THE MOUNTAINS LATE FRIDAY AND THEN THE REST OF THE REGION FRIDAY NIGHT.
A COLD FRONT WILL MOVE THROUGH THE REGION LATE FRIDAY AFTERNOON THROUGH EVENING WITH SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS.
A LOW PRESSURE SYSTEM ALONG THE CALIFORNIA COAST WILL HELP DRAW MOISTURE ACROSS NORTHERN ARIZONA TONIGHT AND OVER THE NEXT FEW DAYS.
/ISSUED 350 PM CDT THU JUN 4 2015/ THE 588 DAM RIDGE CENTERED OVER THE SOUTHERN PLAINS WILL REMAIN ANCHORED IN PLACE THROUGH THE REMAINDER OF THE WEEK.
WATER VAPOR IMAGERY SHOWING DRY AIR ALOFT WRAPPING FROM THE W GULF OVER THE REGION INTO UPPER LOW OVER THE CAROLINAS.
AS THE LOW LEVEL JET SETS UP LATER THIS EVENING, ANY THUNDERSTORMS ALONG THE BAROCLINIC ZONE IN NORTHERN KANSAS MAY BUILD SOUTHWARD TOWARDS INTERSTATE 70. THE LOW LEVEL JET WILL LIKELY AID IN KEEPING THESE STORMS GOING MUCH OF THE NIGHT.
906 PM CDT THU JUN 4 2015 HIGH PRESSURE IS THE DRIVER OF THE CURRENT WEATHER AND PERSISTENCE IS THE KEY. TEMPS ARE IN THE LOW 70S RIGHT NOW AND WILL CONTINUE TO SINK INTO THE LOW TO MID 60S FOR YET ANOTHER NIGHT THIS WEEK. HIGH PRESSURE IS HANGING ON AND CONTINUING TO BRING EXEMPLARY EARLY JUNE WEATHER TO THE LOWER MS VALLEY REGION TODAY. TEMPERATURES ARE RUNNING A FEW DEGREES WARMER THAN WAS THE CASE YESTERDAY IN MOST AREAS BUT WHEN YOU ARE TALKING ABOUT HIGHS SHY OF 90 WITH LOW HUMIDITY IN JUNE YOU REALLY CANNOT DO TOO MUCH COMPLAINING.
/ISSUED 759 PM EDT THU JUN 4 2015/ SHORT TERM MODELS CONTINUE IN GOOD AGREEMENT AS THE UPPER LOW PULLS AWAY FROM THE FORECAST AREA AND NORTHWEST FLOW ALOFT SETS UP. WITH LACK OF STORMS THIS AFTERNOON AND EVENING AM NOT EXPECTING THE LOW LEVEL STRATUS TO SET UP TOMORROW AS WELL.
STORMS JUST STARTING TO GET ROLLING THIS AFTERNOON WITH INITIAL ISOLATED STORMS OVER HIGHER TERRAIN OF CYS RIDGE AND FURTHER SOUTH INTO ELBERT COUNTY. OVERALL STORM COVERAGE WILL BE LESS THIS AFTERNOON VS YESTERDAY AS AREA STILL UNDER SYNOPTIC SCALE SUBSIDENCE WITH WEAK RIDGING.
841 PM CDT THU JUN 4 2015 FINE LINES ON BOTH THE MKX DOPPLER AND FAA TERMINAL DOPPLER RADARS SH0W THE COLD FRONT IS JUST ABOUT SOUTH OF THE BORDER AT MID EVENING. BRINGING COOLER TEMPERATURES. IT LOOKS DRY OVERNIGHT WITH THE COLD FRONT NOW SOUTH. COLD FRONT WILL DROP SOUTH ACROSS THE REGION THIS EVENING. HIGH PRESSURE WILL THEN PUSH DOWN FROM ONTARIO ON FRIDAY WHICH SHOULD ALLOW FOR SOME AFTERNOON SUN.
DRY WEATHER WILL CONTINUE TONIGHT AS WEAK HIGH PRESSURE MOVES OFF TO THE EAST.
DRIER LOW LEVEL NORTHEAST FLOW ON WEST SIDE OF INVERTED TROUGH/WEAK LOW TO OUR EAST AND SUPPRESSION ON THE BACK SIDE OF UPPER LEVEL LOW TO THE NORTH KEPT CONVECTIVE DEVELOPMENT TO A BARE MINIMUM THIS AFTERNOON WITH ONLY A FEW LIGHT SHOWERS ALONG THE SEA BREEZE AS IT QUICKLY PUSHED WEST. WEAK TROUGH/LOW REMAINS OVER THE ATLANTIC TO OUR EAST PRODUCE A LIGHT TO GENTLE EAST-NORTHEAST BREEZE 10KTS OR LESS THROUGH FRIDAY.
THE LOW LEVEL HEIGHT FIELD REMAINS DIFFUSE. ALTHOUGH THERE APPEARS TO BE WEAK TROUGHING WITHIN THE WESTERN CARIBBEAN AND THE EXTREME SOUTHEASTERN GULF OF MEXICO. SPREADING NORTHWEST INTO THE STRAITS OF FLORIDA WITHIN THE IMPLIED CYCLONIC ENVELOPE OF THE LOWER LEVELS. THE RESIDUAL CLOUD STREAMER OF THE LOWER KEYS SPARKED A BROKEN LINE OF HEAVY RAIN SHOWERS AS WELL. AND A FAINT OUTFLOW BOUNDARY SOUTH OF THE MARQUESAS AND THE LOWER KEYS.
IT SEEMS THIS IS IN RESPONSE TO AN 850 MB BOUNDARY ALONG I-90 AND A MID LEVEL DISTURBANCE/TROUGH HEADING EAST FROM THE DAKOTAS. NOT UNTIL A PREDOMINATE E/NE FLOW DEVELOPS LATE TONIGHT/FRIDAY DOES ANY DRYING IN THE LOWEST 3K BE SIGNIFICANT.
NAM SHOWS THE UPPER AIR PATTERN HAS A RIDGE ACROSS THE PLAINS AND A CLOSED LOW AND TROUGH IN THE WESTERN U. AND TROUGHING IN THE EASTERN U. THIS TROUGH THEN MOVES INTO THE NORTHERN PLAINS 00Z SUN AND INTO THE UPPER GREAT LAKES ON SUN. GFS AND ECMWF SHOW A 500 MB TROUGH OVER THE UPPER GREAT LAKES 12Z MON THAT MOVES INTO THE LOWER GREAT LAKES 12Z TUE. THE NEXT 500 MB TROUGH MOVES INTO THE CANADIAN ROCKIES 12Z TUE AND INTO THE UPPER GREAT LAKES 12Z WED. LOW PRESSURE CENTERED OVER THE BAY OF GREEN BAY THIS EVENING WILL MOVE SE OF THE GREAT LAKES ON FRIDAY. HIGH PRESSURE OVER N MANITOBA WILL BUILD OVER NORTHERN ONTARIO THURSDAY NIGHT AND FRIDAY.
420 PM PDT THU JUN 4 2015 A few lingering showers and thunderstorms will be possible on Friday mainly over the lower Idaho Panhandle. Dry and much warmer weather is expected through the weekend as a high pressure ridge returns to the region.
930 PM PDT THU JUN 4 2015 UPPER LEVEL LOW PRESSURE WILL BRING WIDESPREAD LOW CLOUDS TONIGHT AND FRIDAY WITH A SLIGHT CHANCE OF SHOWERS AND CONTINUED BELOW NORMAL TEMPERATURES. THE UPPER LOW WILL GRADUALLY MOVE NORTHEAST AND WEAKEN OVER THE WEEKEND AND RESULT IN A WARMING TREND WITH FEWER CLOUDS.
FM A BROAD RIDGE OUT WEST TO A TROF OVER THE ONTARIO/LOWER GREAT LAKES RGN.
Left over convection, maybe an MCV will move down the front side of the upper ridge Fri morning.
OVERNIGHT LOWS WILL BE A LITTLE WARMER TONIGHT THAN THE PAST FEW NIGHTS IN MOST LOCATIONS WITH DEW POINTS A LITTLE HIGHER. THE MID-SOUTH IS UNDER THE INFLUENCE OF SLOWLY RISING HEIGHTS ALOFT AS THE UPPER LEVEL LOW CONTINUES TO WEAKEN ACROSS THE SOUTHEAST.
THE MID-SOUTH IS UNDER THE INFLUENCE OF SLOWLY RISING HEIGHTS ALOFT AS THE UPPER LEVEL LOW CONTINUES TO WEAKEN ACROSS THE SOUTHEAST.
SOME PATCHY FOG IS POSSIBLE AFTER MIDNIGHT AS DEW POINT DEPRESSIONS FALL INTO THE LOW SINGLE DIGITS.
650 PM CDT THU JUN 4 2015 HIGH PRESSURE WILL CONTINUE OVER THE AREA.
928 PM CDT THU JUN 4 2015 WEAK PRESSURE GRADIENT AT THE SFC WITH RIDGING ALOFT WILL CONTINUE OVERNIGHT. AN ISLTD TSTM AND A FEW SHOWERS HAVE FORMED ACRS THE LOWER ATCHAFALAYA BASIN AND THE SE TX COAST ALONG A WEAK BOUNDARY/CONVERGENCE ZONE BETWEEN THE NLY INLAND FLOW AND DEVELOPING SEABREEZE.
CUT-OFF UPPER LOW OVER THE MID ATLC/CAROLINAS WILL CONTINUE TO DRIFT NORTHEAST OVERNIGHT AND WILL POSSIBLY ROTATE A SPOKE OF ENERGY THROUGH SE GA WHERE ATMOSPHERE REMAINS UNTAPPED FROM TODAYS HEATING AND AN ISOLD SHOWER/STORM IS POSSIBLE OVERNIGHT ALTHOUGH POPS WILL GENERALLY REMAIN AT 20% OR LESS.
1043 PM EDT THU JUN 4 2015 THE UPPER LOW PRESSURE WORKS EAST OFF THE COAST BY FRIDAY EVENING. HIGH PRESSURE WORKS IN FOR THE WEEKEND. THIS WILL ALLOW FOR A TRANSITION TO WARMER TEMPERATURES WITH EASTWARD PUSH OF LOW AND WEDGE ERODING. THE UPPER LEVEL LOW AND COOL AIR WEDGE WILL LOSE ITS INFLUENCE ON THE AREA. A SLOW MOVING COLD FRONT WILL TRACK SOUTH ACROSS THE OHIO VALLEY FRIDAY NIGHT.
AN UPPER LEVEL LOW OVER CALIFORNIA WILL HELP TO KEEP COOLER THAN NORMAL TEMPERATURES ACROSS OUR REGION THROUGH THE WEEKEND. THE LOW MAY ALSO PRODUCE A FEW SHOWERS OR THUNDERSTORMS FOR FAR NORTHERN AND EASTERN LOCATIONS. CLOUDS QUICKLY CLEARED OUT OF THE NORTHERN HALF OF THE CWA THIS MORNING HOWEVER FOR SOUTHERN SECTIONS THE STORY HAS BEEN THE OPPOSITE DUE TO THE PROXIMITY TO AN UPPER LEVEL LOW.
UPPER RIDGE EXTENDING FROM ERN TX AND INTO PORTIONS OF THE SERN US WILL KEEP SKIES MOSTLY CLR OVERNIGHT ACROSS THE CWA.
A LITTLE WARMER THE NEXT FEW DAYS AS WE ARE MAINLY UNDER THE EAST SIDE INFLUENCE OF AN UPPER RIDGE.
WHICH IS ONE DEGREE COOLER THAN THE 77 GRIDDED FOR THAT TIME. /ISSUED 333 PM CDT THU JUN 4 2015/ WV IMAGERY SHOWS THE WELL-ESTABLISHED UPPER RIDGE IN PLACE OVER TX. UPPER RIDGE IS FCST TO CONTINUE BUILDING NEWD INTO THE SRN PLAINS THROUGH THE WEEKEND. THE UPPER RIDGE IS FCST TO WEAKEN/SHIFT SWD AS WE MOVE INTO EARLY NEXT WORK WEEK.
912 PM EDT THU JUN 4 2015 HIGH PRESSURE IS CENTERED OVER CAPE COD WHILE AN UPPER LEVEL LOW PRESSURE REMAINS OVER THE CAROLINAS. THE LOW WILL MOVE OUT TO SEA FRIDAY.
WEAK DEFORMATION MAY SUPPORT A FEW SHOWERS IN CONVERGENCE ZONES OVER THE RIDGES AND ALONG THE OHIO RIVER THIS EVENING. THE PERSISTENT SOUTHEAST FLOW INTO THE RIDGES WILL BE ABSENT FRIDAY. KEEPING POPS IN THE HIGH CHANCE CATEGORY AS GENERAL OMEGA FIELDS LOOK RATHER WEAK AND EXPECT LITTLE ORGANIZATION WITH THUNDERSTORMS DUE TO WEAK OVERALL FLOW.
MOSTLY OVER THE HIGHER ELEVATIONS. ESPECIALLY IN THE WEST CENTRAL MOUNTAINS AND ALONG THE NEVADA BORDER AS AS MOISTURE WRAPS AROUND THE LOW FROM THE SOUTH.
/ISSUED 333 PM CDT THU JUN 4 2015/ WV IMAGERY SHOWS THE WELL-ESTABLISHED UPPER RIDGE IN PLACE OVER TX. UPPER RIDGE IS FCST TO CONTINUE BUILDING NEWD INTO THE SRN PLAINS THROUGH THE WEEKEND. THE UPPER RIDGE IS FCST TO WEAKEN/SHIFT SWD AS WE MOVE INTO EARLY NEXT WORK WEEK.
808 PM EDT THU JUN 4 2015 AVIATION A WEAK COLD FRONT WILL PASS THROUGH THE AREA LATE TONIGHT.
AN ISLTD TSTM AND A FEW SHOWERS HAVE FORMED ACRS THE LOWER ATCHAFALAYA BASIN AND THE SE TX COAST ALONG A WEAK BOUNDARY/CONVERGENCE ZONE BETWEEN THE NLY INLAND FLOW AND DEVELOPING SEABREEZE.
UPPER AIR ANALYSIS THIS MORNING SHOWED A RIDGE FROM NORTHERN MEXICO TO THE CENTRAL MISSISSIPPI VALLEY WITH A TROUGH ALONG THE WEST COAST. THE UPPER LEVEL RIDGE WILL SHIFT SLIGHTLY TO THE EAST DURING THIS PERIOD. TEMPERATURES WILL BE A DEGREE OR TWO WARMER.
CIRRUS DEBRIS FROM MOIST CONVECTION ACROSS THE PANHANDLES AND KS WILL CONTINUE TO WORK ITS WAY OVER THE RIDGE AND INTO NORTH CENTRAL OK OVER THE NEXT SEVERAL HOURS.
LOW PRESSURE ALONG THE CALIFORNIA COAST WILL BRING MOISTURE NORTH INTO UTAH BEGINNING LATE TONIGHT. UPPER LEVEL LOW ALONG THE CENTRAL CALIFORNIA COAST IS DRIFTING SLOWLY SOUTH THIS EVENING. DEEP MOISTURE FROM A DECAYING TROPICAL SYSTEM OFF OF THE BAJA CALIFORNIA COAST IS ALSO BEING PULLED NORTH ALONG THE EASTERN FLANK OF THE UPPER LEVEL LOW. THE LOW LEVELS WILL START OFF VERY DRY WITH SURFACE DEWPOINTS GENERALLY BETWEEN 10-20 DEGREES F THIS EVENING.
/ISSUED 306 PM CDT THU JUN 4 2015/ QUIET AND SEASONALLY WARM WEATHER WILL CONTINUE ACROSS NORTH TEXAS THROUGH THE WEEKEND AS UPPER LEVEL HIGH PRESSURE REMAINS ANCHORED ACROSS THE CENTRAL AND SOUTHERN PLAINS.
UPPER RIDGE AXIS WILL REMAIN OVER THE REGION THROUGH THE WEEKEND WITH HOT/HUMID CONDITIONS AND ONLY LIMITED CHANCES FOR RAIN.
957 PM EDT THU JUN 4 2015 A MID/UPPER LEVEL LOW DRIFTS OFF THE NORTH CAROLINA COAST FRIDAY.
UPPER RIDGE MOVES LITTLE AND MOISTURE REMAINS BORDERLINE FOR SOME VERY ISOLATED DIURNAL CONVECTION GENERATED BY SURFACE FORCING AND DAYTIME HEATING.
1044 PM EDT THU JUN 4 2015 HIGH PRESSURE REMAINS CENTERED TO THE NORTHEAST WHILE A WEAK LOW PRESSURE SYSTEM SLOWLY PASSES TO OUR SOUTHEAST THROUGH FRIDAY NIGHT.
SOME OF THE HIGH RESOLUTION MODELS ARE DEVELOPING ELEVATED STORMS ACROSS NORTHEASTERN NEBRASKA AND SOUTHEASTERN SOUTH DAKOTA AROUND SUNSET IN CONJUNCTION WITH THE APPROACHING 500 MB TROUGH AND MOVING SAID STORMS ACROSS OUR NORTHERN AND CENTRAL COUNTIES BETWEEN ABOUT 02Z AND 07Z.
THUNDERSTORMS HAVE BEEN DEVELOPING AND TRACKING ALONG THE PERIPHERY OF AN UPPER-LEVEL RIDGE OVER THE CENTRAL PLAINS FOR THE PAST COUPLE OF DAYS.
CLOSED UPPER LOW OVER SOUTH CAROLINA CONTINUES TO DRIFT EAST AND UPPER LEVEL RIDGING IS NUDGING NORTHEAST INTO THE LOWER OH VALLEY FROM THE SOUTHERN PLAINS. AS THE UPPER LOW OVER SOUTH CAROLINA CONTINUES TO PULL AWAY WE WILL COME UNDER NORTHWEST FLOW ON THE NE SIDE OF THE UPPER RIDGE TO OUR WEST. UPPER LEVEL LOW THAT CAUSED THE GLOOMY CONDITIONS WILL CONTINUE TO OPEN AND MOVE EAST AS WE BRIEFLY TRANSITION TO A MORE WEAK NW FLOW ALOFT.
AN UPPER LOW OVER CENTRAL CALIFORNIA WILL MOVE INTO SOUTHERN CALIFORNIA BY FRIDAY AFTERNOON.
IT WILL BE A HUMID NIGHT AGAIN WITH LOWS IN THE UPPER 60S ACROSS THE NORTHERN HALF OF THE AREA TO THE LOW 70S CLOSER TO THE COAST.
613 PM CDT THU JUN 4 2015 FOR 00Z TAFS /ISSUED 155 PM CDT THU JUN 4 2015/ WATER VAPOR IMAGERY SHOWS THE UPPER LOW THAT HAS BEEN PLAGUING THE SOUTHEAST CONTINUING TO TRACK EAST THRU SC WITH A VORTICITY SPOKE DROPPING S BEHIND IT INTO NERN GA. MEANWHILE AN UPPER RIDGE WAS BUILDING ACROSS THE SOUTHERN PLAINS INTO THE LOWER MS VALLEY TODAY. THE REMNANT VORTICITY CENTERS ASSOCIATED WITH DAILY/NIGHTLY MCS ACTIVITY IN THE CENTRAL PLAINS WILL CONTINUE TO MIGRATE OVER THE RIDGE AND INTO THE TN VALLEY OVER THE NEXT COUPLE OF DAYS. THE STORMS WILL HAVE TO GENERATE THEIR OWN SR-INFLOW THOUGH GIVEN NORTHERLY FLOW THROUGHOUT THE LOW TO MID LEVELS.
/ISSUED 346 PM CDT THU JUN 4 2015/ TODAY A DEGREE OR SO WARMER THAN YESTERDAY.
911 PM EDT THU JUN 4 2015 HIGH PRESSURE OVERHEAD MOVES OFFSHORE TONIGHT AND FRIDAY. A COLD FRONT WILL APPROACH FROM THE NORTH AND MOVE SOUTH INTO THE MOUNTAINS LATE FRIDAY AND THEN THE REST OF THE REGION FRIDAY NIGHT.
720 PM EDT THU JUN 4 2015 A MID/UPPER LEVEL LOW DRIFTS OFF THE NORTH CAROLINA COAST FRIDAY.
1033 PM EDT THU JUN 4 2015 A PRESSURE TROUGH WILL BE NEAR THE COAST THROUGH FRIDAY. THE LOW WILL BE OVER EASTERN NORTH CAROLINA TONIGHT AND JUST OFF THE COAST FRIDAY. CENTER OF THE UPPER LOW APPEARS TO NOW BE ACROSS EASTERN NORTH CAROLINA. THE MODELS SHOW RIDGING EXTENDING INTO THE AREA FROM THE NORTH WEAKENING WITH THE INVERTED TROUGH SHIFTING FARTHER OFF THE COAST FRIDAY.
VIS SATELLITE IMAGERY CLEARLY SHOWS THE MOISTURE STREAMING UP FROM THE NORTHEAST FROM TS ANDRES AS A CLOSED LOW CONTINUES TO APPROACH FROM THE WEST.