Aikyam-Lab/Synoptic-Bench huggingface dataset:
As of 05Z, An upper level ridge sits above the western United States with a large upper level low over the Great Lakes. A weakening upper level low is sinking southward from the northern Plains and should weaken into an open wave and move through Nebraska by late this morning.
UPPER LOW FINALLY EXITS THE AREA TODAY AND MARKS THE START OF A MULTI-DAY RAIN FREE PERIOD THROUGH THE WEEKEND.
/ISSUED 257 AM CST THU FEB 25 2016/ A WEAK COLD FRONT WILL MOVE ACROSS NORTH AND CENTRAL TEXAS THIS MORNING AND BRING A REINFORCEMENT OF DRY AND COOL AIR. HIGHS FRIDAY WILL BE GENERALLY IN THE LOWER 60S.
659 AM EST THU FEB 25 2016 SMALL STREAMS AND CREEKS WILL REMAIN ELEVATED ACROSS THE LOWER SUSQUEHANNA VALLEY TODAY. LIGHT RAIN CONTINUES TO LINGER ACROSS MUCH OF CENTRAL PA EARLY THIS MORNING IN ASSOCIATION WITH UPPER LEVEL LOW. AS WEAK RIDGE OF HIGH PRESSURE SLIDES INTO THE AREA.
WINTER WEATHER ADVISORY IS IN EFFECT FOR THE HIGHER ELEVATIONS OF DISTURBANCES EMBEDDED WITHIN THE NORTHWEST FLOW ALOFT.
949 AM EST THU FEB 25 2016 SMALL STREAMS AND CREEKS WILL REMAIN ELEVATED ACROSS THE LOWER SUSQUEHANNA VALLEY TODAY. LIGHT RAIN CONTINUES TO LINGER ACROSS MUCH OF CENTRAL PA EARLY THIS MORNING IN ASSOCIATION WITH UPPER LEVEL LOW. AS WEAK RIDGE OF HIGH PRESSURE SLIDES INTO THE AREA.
WHICH IS APPARENT ON SATELLITE AS WELL AS THE LOW DEWPOINTS BEING REPORTED ACROSS S TX. AN UPPER LEVEL DISTURBANCE OVER THE NRN PLAINS IS PREDICTED BY THE DETERMINISTIC GFS TO MOVE ACRS THE LOWER MISSISSIPPI VALLEY REGION TONIGHT/EARLY FRIDAY.
BROAD RIDGE DOMINATING THE WEST AND BROAD 500 MB LONG AVE TROUGH TO THE EAST COAST WILL CONTINUE TO TRAVEL E/NE DURING THE SHORT TERM PERIOD. HIGH PRESSURE CENTERED OVER S TX WILL DRIFT E/SE INTO THE GULF OF MEXICO TODAY RETURNING SE FLOW TODAY WITH LIGHT TO MODERATE SE WINDS. AS SECONDARY HIGH PRESSURE MOVES INTO THE REGION.
910 AM EST THU FEB 25 2016 HIGH PRESSURE WILL CONTINUE TO WORK INTO THE FLORIDA PENINSULA TODAY FROM THE NORTH. /ISSUED 351 AM EST THU FEB 25 2016/ COOLER, DRIER AIR IS ON THE WAY AS A COLD FRONT EXITS SOUTH FLORIDA THIS MORNING.
440 AM CST THU FEB 25 2016 LATEST UPPER AIR ANALYSIS/WATER VAPOR SATELLITE IMAGERY REVEALED AN UPPER TROF PREVAILING OVER THE ERN HALF OF THE CONUS. HIGH PRESSURE WAS CENTERED OVER THE WESTERN GULF OF MEXICO. WHILE A COLD FRONT WAS LOCATED TO THE NORTHWEST JUST SOUTH OF DFW TX. SEASONAL TEMPERATURES ARE EXPECTED TODAY AMID AMPLE SUN AND A PRE-FRONTAL THERMAL RIDGE. WHILE AT THE SFC THE HIGH PRESSURE CONTINUES EASING EAST INTO THE AREA. BELOW NORMAL HIGHS ARE EXPECTED AMID THE COOLER THERMAL PROFILE DESPITE CONTINUED AMPLE SUN.
THE GOOD NEWS IS THAT TEMPERATURES IN THE VALLEY WILL REMAIN ABOVE FREEZING TODAY AND SHOULD WARM INTO THE UPPER 30S TO LOWER 40S IN MUST VALLEY AREAS. AS WELL AS THE HIGHER TERRAIN OF THE NORTHERN PLATEAU. A WSW CONTINUES FOR THESE AREAS FOR LIGHT SNOW AND LOCALIZED TRAVEL IMPACTS WHERE TEMPERATURES REMAIN NEAR/BELOW FREEZING. CHATTANOOGA AIRPORT, TN 46 31 49 31 / 20 10 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 41 29 43 28 / 40 30 0 10 OAK RIDGE, TN 41 29 43 30 / 40 30 0 0 TRI CITIES AIRPORT, TN 39 25 39 26 / 60 60 10 20 NC.
AMPLIFICATION OF THE UPPER RIDGE OVER THE INTERIOR NW WILL ACT TO WARM TEMPERATURES THROUGH FRIDAY. TEMPERATURES ARE 2-5 DEGREES WARMER THAN YESTERDAY ACROSS THE AREA. WILL SEE AN INCREASE IN WINDS ON FRIDAY IN RESPONSE TO STRENGTHENING SOUTHWEST FLOW ALOFT AND TIGHTENING SURFACE PRESSURE GRADIENT AHEAD OF AN APPROACHING LOW PRESSURE. TEMPERATURES PEAK ON FRIDAY REACHING 10-15 DEGREES ABOVE NORMAL /PASSING 60 DEGREES IN SE OREGON AND THE LOWER SNAKE PLAIN/.
623 AM EST THU FEB 25 2016 COOLER AND DRIER AIR WILL PUSH INTO THE AREA OVERNIGHT. LOW PRESSURE OVER THE NEW ENGLAND REGION WILL CONTINUE MOVING AWAY FROM THE AREA TODAY AS COOLER AND DRIER AIR OVERTAKE THE REGION. UPPER LEVEL TROUGH WILL SWING THROUGH THE AREA AROUND SUNRISE FRIDAY MORNING.
Winds will remain generally light and variable with the passage of a weak cold front. /issued 452 AM CST THU FEB 25 2016/ (Today and Tonight) A cold front will move south through the Big Country this morning, reaching the Interstate 10 corridor around noon. Afternoon highs across the area today will depend on the speed and placement of the cold front with upper 50s expected in the Big Country and mid 60s expected across the Interstate 10 corridor. Morning lows tomorrow under clear skies will be similar to this mornings with lows mostly in the lower 30s.
/ISSUED 323 AM CST THU FEB 25 2016/ THANKS TO A COLD FRONT WHICH MOVED THROUGH THE PANHANDLES JUST BEFORE THE MIDNIGHT HOUR, HIGH TEMPERATURES ARE EXPECTED TO BE AROUND 10 TO 15 DEGREES COOLER THAN YESTERDAY. THIS COOLDOWN WONT LAST LONG DUE TO A RIDGE WHICH IS EXPECTED TO BUILD OVER THE PANHANDLES INTO THE WEEKEND.
A DRY NW FLOW PATTERN ALOFT WILL LEAD TO MILD TEMPERATURES DESPITE THE DAYTIME PASSAGE OF A WEAK COLD FRONT. GOOD DAYTIME MIXING HELPS TO DELAY THE FRONTAL IMPACT OVER THE RIO GRANDE VALLEY UNTIL MID TO LATE AFTERNOON WITH HIGHS IN THE LOW TO MID 70S OVER MOST AREAS SOUTH OF I-10. A SLIGHTLY COOLER THAN NORMAL DAY IS EXPECTED OVER BURNET/WILLIAMSON COUNTIES. ALTHOUGH MINIMAL DECOUPLING OF THE LOW LEVEL WINDS SHOULD KEEP ALL BUT A FEW AREAS OF THE HILL COUNTRY ABOVE FREEZING.
954 AM EST THU FEB 25 2016 THE NEAR TERM SECTION HAS BEEN UPDATED BELOW LOW PRESSURE WILL PULL AWAY FROM CENTRAL INDIANA DURING THE DAY TODAY.
A cold front will move south through the area today, expected to reach HOB by 13Z, MAF by 15Z, and FST by around 19Z. /issued 231 AM CST THU FEB 25 2016/ Upper ridge centered over the West Coast this morning will slowly build east the next few days providing mild wx for the region.
713 AM EST THU FEB 25 2016 STRONG LOW PRESSURE WILL TRACK NORTHEAST ACROSS NORTHERN NEW ENGLAND TODAY.
404 AM CST THU FEB 25 2016 LATEST SURFACE ANALYSIS REVEALED A 1024MB HIGH OVER SOUTH TEXAS AND WEST GULF WITH THE RIDGE AXIS EXTENDING NORTHEAST OVER LOWER MISSISSIPPI VALLEY. UPPER AIR ANALYSIS AND IR SATELLITE IMAGERY SHOWED A CYCLONIC CIRCULATION OVER THE GREAT LAKES WITH THE TROUGH AXIS ALONG THE EAST COAST AND NORTHWEST FLOW OVER MISSISSIPPI VALLEY AND PLAINS. UPPER AIR DISTURBANCE WILL TRACK SOUTHEAST PUSHING THROUGH THE LOWER MISSISSIPPI VALLEY TONIGHT.
351 AM MST THU FEB 25 2016 THE EASTWARD MIGRATION OF THE UPPER RIDGE BUILDING TO OUR WEST WILL CUT OFF THE FLOW OF MARITIME MOISTURE INTO COLORADO DURING THE NEXT 24 HOURS. A SCATTERING OF MID- LEVEL CLOUDS OVER THE HIGH MTNS THIS MORNING COULD STILL PRODUCE A FEW VERY LIGHT SNOW SHOWERS OVER THE HIGH PEAKS EARLY. FURTHERMORE THE LOW-LEVEL PRES GRADIENT ON THE PLAINS HAS RELAXED CONSIDERABLY IN THE PAST 8 HOURS. COULD SEE WESTERLY WINDS INCREASING IN SPEED OVERNIGHT ABOVE TIMBERLINE AND ON THE HIGHER EAST FACING SLOPES WITH GUSTS IN THE 25-40 MPH RANGE IN WIND PRONE AREAS BY MORNING.
/ISSUED 508 AM CST THU FEB 25 2016/ SHOULD BE A RATHER QUIET/DRY/COOL END REST OF THE WEEK FOR SE TX WITH THE PASSAGE OF ANOTHER COLD FRONT THIS AFTN. LOW POPS WILL RETURN TO THE NRN PARTS OF THE FA LATE SUN ON INTO MON AS A WEAK COLD FRONT MOVES DOWN FROM THE SRN PLAINS. OTHERWISE EXTENDED GUIDANCE IS STILL INDICATING THE POSSIBLE DEEPENING OF A STRONG UPPER LOW OVER THE TX/OK PANHANDLE(S) NEXT TUES. 41 HIGH PRESSURE OVER THE AREA AND A COLD FRONT PUSHING OVER THE RED RIVER AT 4 AM. A COLD FRONT SHOULD MOVE ACROSS GALVESTON BAY AROUND 5-7 PM AND WINDS STEADILY INCREASE OUT OF THE NORTH.
LOW PRESSURE MOVING TOWARD LAKE ERIE THIS MORNING WITH COLDER AIR WRAPPING IN UNDER THE SYSTEM. TEMPERATURES WILL FALL OFF THROUGH THE 30S MOST LOCATIONS AND INTO THE 20S IN THE HIGHER RIDGE ELEVATIONS. GUSTS TO 30 MPH ACROSS THE NORTH AND NEAR 40 MPH IN THE RIDGES. AND SOME BLOWING SNOW WAS MENTION IN THE ADVISORY FOR THE HIGHER ELEVATIONS SNOW SHOWERS WILL DIMINISH FRIDAY AS LOW LEVELS DRY OUT AND INVERSIONS DROP.
558 AM CST THU FEB 25 2016 FOR 12Z TAFS /ISSUED 325 AM CST THU FEB 25 2016/ THE EASTERN HALF OF THE CONUS WILL REMAIN UNDER A FAIRLY BROAD LONGWAVE TROUGH THROUGH THE START OF THE WEEKEND.
A STRONG LONG WAVE RIDGE NOW OVER THE WEST COAST STATES WILL MOVE SLOWLY EAST. FRIDAY WILL START OFF DRY WITH HIGHS AROUND 5 TO 10 DEGREES COOLER THAN THURSDAY OVER MOST AREAS. A SHORT WAVE EJECTING FROM THE OFFSHORE TROUGH WILL MOVE ONSHORE FRIDAY EVENING.
1042 AM EST THU FEB 25 2016 HIGH PRESSURE BUILDS IN FOR THE END OF THE WEEK.
1014 AM EST THU FEB 25 2016 STRONG LOW PRESSURE WILL TRACK NORTHEAST ACROSS NORTHERN NEW ENGLAND TODAY.
418 AM CST THU FEB 25 2016 COOL AND DRY AIR MASS WILL SOON BE REINFORCED WITH A DRY COLD FRONT DROPPING SOUTH FROM THE PLAINS INTO OUR REGION EARLY THIS MORNING. HIGH PRESSURE WILL QUICKLY ALLOWING FOR IDEAL RADIATIONAL COOLING AND TEMPERATURES FALLING NEAR OR BELOW FREEZING AREA WIDE ON FRIDAY MORNING. AS THE HIGH SHIFTS SE LATER ON FRIDAY. SOUTHERLY WINDS WILL GRADUALLY RETURN AND BEGIN A WARMING TREND HEADING INTO THE WEEKEND AS UPPER RIDGE SETTLES OVER THE REGION.
AN UPPER LEVEL DISTURBANCE OVER THE NRN PLAINS IS PREDICTED BY THE DETERMINISTIC GFS TO MOVE ACRS THE LOWER MISSISSIPPI VALLEY REGION TONIGHT/EARLY FRIDAY.
THE CDFNT WL BRING NWLY WINDS AND A REINFORCING SHOT OF COOLER AIR.
221 AM PST THU FEB 25 2016 DRY WEATHER WILL CONTINUE FOR THE NEXT SEVERAL DAYS AS A RIDGE OF HIGH PRESSURE DOMINATES THE PATTERN. OTHERWISE MAINLY CLEAR AND DRY CONDITIONS ACROSS CENTRAL CA DUE TO A COMBINATION OF AN UPPER RIDGE ACROSS THE WEST AND OFFSHORE WIND FLOW. THE RIDGE WILL CONTINUE TO AMPLIFY NORTH THROUGH FRIDAY AS A STORM SYSTEM APPROACHES THE PAC NW. WIND FLOW TURNS ONSHORE LATE FRIDAY AS AN UPPER TROUGH APPROACHES NCAL. THE RIDGE IS PROGGED TO BREAK DOWN ON FRIDAY AS AN UPPER LOW MOVES INTO THE PACNW. RH PROGS HAVE CONSISTENTLY BEEN INDICATING THAT THE DEEPER MOISTURE AND DYNAMICS WITH THIS SYSTEM SUFFICIENT FOR PRECIPITATION REMAINING TO THE NORTH OF OUR AREA AS THE LOW PUSHES INLAND ON FRIDAY NIGHT.
957 AM EST THU FEB 25 2016 STRONG NORTHWEST FLOW WILL BE FOUND OVER THE OHIO VALLEY AS LOW PRESSURE EJECTS NORTHEAST AND AWAY FROM THE REGION TODAY. HIGH PRESSURE WILL BUILD IN THE UPPER MIDWEST TONIGHT AND CROSS THE OHIO RIVER BY FRIDAY EVENING.
HIGH PRESSURE WILL REMAIN THE PREDOMINANT WEATHER FEATURE THROUGH THE WEEKEND. LATEST STREAMLINE ANALYSIS DEPICTS NORTHWESTERLY FLOW ACROSS THE REGION ASSOCIATED WITH A RIDGE ALONG THE WEST COAST. THE RIDGE WILL CONTINUE MIGRATING EASTWARD INTO THE INTERMOUNTAIN WEST THROUGH THE WEEKEND. NAEFS HEIGHT/TEMPERATURE ANOMALIES AND PERCENTILES POINT TO A WARMER THAN AVERAGE AIRMASS BUT SHORT OF EXTREME VALUES. HIGH TEMPERATURES IN THE 80S WILL RETURN TO THE LOWER DESERTS.
WINDY AND COOLER TODAY. SECONDARY FRONTAL/TROF PASSAGE THIS EVENING WILL KEEP A TIGHTER PRESSURE GRADIENT AND ELEVATED NORTHWEST WINDS TONIGHT ALONG WITH BRIEF PARTLY CLOUDY CONDITIONS. COOLER AND DRY TODAY.
936 AM EST THU FEB 25 2016 LOW PRESSURE WILL DRAG A TRAILING COLD FRONT ACROSS THE AREA TODAY.
IT WILL BE SLIGHTLY COOLER THIS WEEKEND WITH SOME COASTAL CLOUDS RETURNING.
452 AM CST THU FEB 25 2016 (Today and Tonight) A cold front will move south through the Big Country this morning, reaching the Interstate 10 corridor around noon. Afternoon highs across the area today will depend on the speed and placement of the cold front with upper 50s expected in the Big Country and mid 60s expected across the Interstate 10 corridor. Morning lows tomorrow under clear skies will be similar to this mornings with lows mostly in the lower 30s.
630 AM EST THU FEB 25 2016 STRONG NORTHWEST FLOW WILL BE FOUND OVER THE OHIO VALLEY AS LOW PRESSURE EJECTS NORTHEAST AND AWAY FROM THE REGION TODAY. HIGH PRESSURE WILL BUILD IN THE UPPER MIDWEST TONIGHT AND CROSS THE OHIO RIVER BY FRIDAY EVENING.
942 AM EST THU FEB 25 2016 A COLD FRONT CONTINUES TO PUSH SOUTHEAST OF THE KEYS SERVICE AREA EARLY THIS MORNING.
The ridge of high pressure will continue to be the dominant feature over the Northern Rockies today and Friday. A subtle disturbance moves through the ridge later today and this evening, but the main impact of this disturbance will be an increase in mid and upper level clouds.
521 AM EST THU FEB 25 2016 SMALL STREAMS AND CREEKS WILL REMAIN ELEVATED ACROSS THE LOWER SUSQUEHANNA VALLEY TODAY. LIGHT RAIN CONTINUES TO LINGER ACROSS MUCH OF CENTRAL PA EARLY THIS MORNING IN ASSOCIATION WITH UPPER LEVEL LOW. AS WEAK RIDGE OF HIGH PRESSURE SLIDES INTO THE AREA.
508 AM CST THU FEB 25 2016 SHOULD BE A RATHER QUIET/DRY/COOL END REST OF THE WEEK FOR SE TX WITH THE PASSAGE OF ANOTHER COLD FRONT THIS AFTN. LOW POPS WILL RETURN TO THE NRN PARTS OF THE FA LATE SUN ON INTO MON AS A WEAK COLD FRONT MOVES DOWN FROM THE SRN PLAINS. OTHERWISE EXTENDED GUIDANCE IS STILL INDICATING THE POSS- IBLE DEEPENING OF A STRONG UPPER LOW OVER THE TX/OK PANHANDLE(S) NEXT TUES. 41 HIGH PRESSURE OVER THE AREA AND A COLD FRONT PUSHING OVER THE RED RIVER AT 4 AM. A COLD FRONT SHOULD MOVE ACROSS GALVESTON BAY AROUND 5-7 PM AND WINDS STEADILY INCREASE OUT OF THE NORTH.
512 AM CST THU FEB 25 2016 Current water vapor imagery and H5 heights show a compact vort max propagating around the periphery of the upper level trough moving through the Great Lakes region. Bufkit soundings have moistened up the low levels compared to previous soundings.
1036 AM EST THU FEB 25 2016 WINDS WILL CONTINUE TO BE GUSTY THROUGH THE DAY TODAY AS A TIGHT PRESSURE GRADIENT REMAINS OVER THE AREA BETWEEN HIGH PRESSURE BUILDING IN FROM THE W/NW AND THE COLD FRONT THAT MOVED THROUGH THE AREA YESTERDAY LINGERING ACROSS THE BAHAMAS. COOLER AND DRIER AIR WILL CONTINUE TO MOVE INTO THE AREA WITH TEMPS ON TRACK TO BE IN THE 60S THIS AFTERNOON. HIGH PRESSURE WILL CONTINUE ACROSS THE WATERS THROUGH THE WEEKEND.
SNOW SHOWERS SHOULD BEGIN TAPERING OFF FROM NORTHWEST TO SOUTHEAST LATE TONIGHT INTO FRIDAY MORNING WITH LITTLE TO NO SNOW ACCUMULATION EXPECTED EXCEPT FOR IN THE HIGHER TERRAIN ALONG THE VIRGINIA BORDER AND ON GRASSY SURFACES.
228 AM PST THU FEB 25 2016 DRY WEATHER WILL CONTINUE FOR THE NEXT SEVERAL DAYS AS A RIDGE OF HIGH PRESSURE DOMINATES THE PATTERN. OTHERWISE MAINLY CLEAR AND DRY CONDITIONS ACROSS CENTRAL CA DUE TO A COMBINATION OF AN UPPER RIDGE ACROSS THE WEST AND OFFSHORE WIND FLOW. THE RIDGE WILL CONTINUE TO AMPLIFY NORTH THROUGH FRIDAY AS A STORM SYSTEM APPROACHES THE PAC NW. WIND FLOW TURNS ONSHORE LATE FRIDAY AS AN UPPER TROUGH APPROACHES NCAL. THE RIDGE IS PROGGED TO BREAK DOWN ON FRIDAY AS AN UPPER LOW MOVES INTO THE PACNW. RH PROGS HAVE CONSISTENTLY BEEN INDICATING THAT THE DEEPER MOISTURE AND DYNAMICS WITH THIS SYSTEM SUFFICIENT FOR PRECIPITATION REMAINING TO THE NORTH OF OUR AREA AS THE LOW PUSHES INLAND ON FRIDAY NIGHT.
ANOTHER UPPER LEVEL TROUGH CROSSES THE AREA TONIGHT.
724 AM EST THU FEB 25 2016 LOW PRESSURE WILL MOVE WEST OF THE REGION EARLY THIS MORNING BRINGING A ROUND OF HEAVY RAINFALL TO THE REGION AS TEMPERATURES WARM TO RECORD LEVELS TODAY AND RETURN TO SEASONAL LEVELS ON FRIDAY. MUCH COOLER AIR WILL FLOW BACK INTO THE REGION TO END THE WEEK.
1004 AM EST THU FEB 25 2016 MADE SOME MINOR TWEAKS TO THE HIGH TEMPS FOR TODAY. WINTER WEATHER ADVISORY IS IN EFFECT FOR THE HIGHER ELEVATIONS OF DISTURBANCES EMBEDDED WITHIN THE NORTHWEST FLOW ALOFT.
The upper-level pattern this morning features a large, broad mid/upper trough across much of the CONUS, with a closed low over the Upper Mississippi Valley. Ridging remains in place across the Southeast, centered over the Florida peninsula. This pattern will change very little locally through the day, with the trough amplifying and gradually moving east while the ridge holds across the Southeast. In addition to the afternoon seabreeze, an MCV currently south of LA will pass through the Lower Mississippi Valley and the Southeast today, increasing convective coverage. Afternoon highs will be similar to yesterday, around 90 degrees in areas receiving rain earlier in the day, into the lower 90s elsewhere.
ESPECIALLY THE LAST PART OF THE DAY AS THE LARGE ANOMALOUSLY DEEP TROUGH OVER THE UPPER MIDWEST BEGINS TO MOVE INTO THE WESTERN GR LAKES AND SOUTHERN CANADA.
359 AM CDT WED AUG 19 2015 NOTHING LIKE RETURNING FROM VACATION TO AN ACTIVE FIRST MIDNIGHT SHIFT THANKS TO A SOMEWHAT RARE LATE SUMMER COLD FRONT THAT WAS LOCATED ACROSS THE CENTRAL SOUTH PLAINS AND CENTRAL ROLLING PLAINS AS OF 3 AM THIS MORNING.
WITH A DEVELOPING UPPER TROUGH PATTERN E OF THE PLAINS STATES COUPLED WITH AN EXITING AREA OF HIGH PRESSURE OVER THE MID/SRN ATLANTIC BASINS. THE LATEST MODEL SUITES ARE STILL FOCUSING ON THE APPROACHING COLD FRONT FROM THE GREAT LAKES INTO THE SRN PLAINS PUSHING SEWD INTO THE LOWER MS/TN VALLEY REGIONS IN THE LATE TONIGHT/EARLY THU TIME FRAME. AS THE SRN FRINGE OF THE UPPER TROUGH AXIS GRADUALLY TRAVERSES EWD ACROSS THE CNTRL GULF REGION. A REINFORCING COLD FRONT THEN LOOKS TO SWEEP THROUGH THE REGION BY THE START OF THE NEW WORK WEEK. WITH STRONG HIGH PRESSURE BUILDING EWD INTO THE MIDWEST/OH VALLEY REGIONS IN THE WAKE OF THE FRONTAL PASSAGE. AS A STRONG UPPER LEVEL TROUGH PUSHES EASTWARD INTO THE REGION.
WEAK RIDGING WILL PASS BY TO THE NORTH AND NORTHEAST TODAY INTO TONIGHT. AND A STRONGER TROUGH WILL MOVE INTO BRITISH COLUMBIA THURSDAY. THIS TROUGH WILL BEGIN TO BACK OUR UPPER LEVEL FLOW SLIGHTLY.
133 AM EDT WED AUG 19 2015 A MOIST FLOW CIRCULATING AROUND OFFSHORE HIGH PRESSURE WILL PERSIST THROUGH MUCH OF THE WEEK. OVERNIGHT LOWS IN THE LOWER TO MIDDLE 70S LOOK REASONABLE. USED THE GUIDANCE CONSENSUS FOR THE HIGH TEMPERATURE FORECAST. USED THE WARMER LOW TEMPERATURE GUIDANCE BECAUSE OF THE HIGH MOISTURE.
THE NAM12 FEATURE SLIGHTLY SLOW EASTWARD PROGRESSION OF A COLD FRONT ACROSS THE AREA THAN THE GFS. THE LARGE SCALE PATTERN OVER THE NEXT COUPLE OF DAYS SHOULD FEATURE A LARGE TROUGH ALOFT MOVING ACROSS THE GREAT LAKES REGION AND INTO NEW ENGLAND. WITH A TRAILING COLD FRONT PROGRESSING FROM WEST TO EAST ACROSS THE GREAT LAKES. THE WESTERN PART OF THE FORECAST AREA SHOULD SEE THE HIGHEST PROBABILITY OF RAIN TODAY BECAUSE OF THIS. HIGHS ON THURSDAY LOOK TO BE MUCH COOLER THAN NORMAL. AS MUCH COOLER AN DRIER AIR SPILL INTO THE REGION BEHIND THE DEPARTING FRONT.
427 AM EDT WED AUG 19 2015 HIGH PRESSURE REMAINS OFFSHORE OVER THE NEXT FEW DAYS AS A LOW PRESSURE SYSTEM AND ASSOCIATED COLD FRONT APPROACH FROM THE WEST.
AND UNSETTLED WEATHER IS EXPECTED UNTIL THE PASSAGE OF A COLD FRONT THURSDAY. KEPT THE HIGHER POPS IN THE EASTERN HALF OF FA. MAIN PLAYER DURING THIS PERIOD IS A COLD FRONT. WITH PERHAPS A FEW LINGERING SHRA ALONG THE RIDGES BY THURSDAY EVENING.
/ISSUED 353 PM CDT TUE AUG 18 2015/ COLD FRONT ACROSS THE SOUTHERN TEXAS PANHANDLE WILL CONTINUE TO MOVE SOUTH THIS EVENING. BUT BELIEVE THE BEST CHANCE OF RAIN WILL COME OVERNIGHT TONIGHT AS THE 700MB AND 500 MB SHORT WAVE TROUGHS MOVE ACROSS THE CENTRAL HIGH PLAINS.
THIS LOW WAS PRODUCING WIDESPREAD RAIN SHOWERS ACROSS THE EASTERN DAKOTAS. WITH COLD AIR ADVECTION CONTINUING BEHIND THE LOW. BELOW NORMAL TEMPERATURES WILL PREVAIL TODAY WITH READINGS IN THE LOW 70S.
PIKES PEAK SNOW ON THE AN UPPER LEVEL LOW PRESSURE AREA TRACKING THROUGH THE NORTHERN GREAT PLAINS THIS AFTERNOON. IT'S ALREADY BEEN COOLER OVER THE EAST TODAY FOLLOWING THE FIRST PUSH OF COOL AIR WITH THIS SYSTEM. EVEN COOLER AIR IS UPSTREAM. AND THE HIGHER IN ELEVATION YOU GO.
409 AM CDT WED AUG 19 2015 AN UNSEASONABLY STRONG COLD FRONT EXTENDED FROM EAST-CENTRAL TO SOUTHWEST OKLAHOMA EARLY THIS MORNING. MUCH COOLER AND DRIER AIR WAS OVER KANSAS. THE COMBINED EFFECTS OF THE COOLER/DRIER AIR.
AN APPROACHING COLD FRONT, WILL BRING THE LIKELIHOOD OF SHOWERS AND STORMS THURSDAY AFTERNOON AND NIGHT. CONDITIONS WILL BE WARM AND MUGGY, WITH LOWS NOT LIKELY TO DROP BELOW 70 DEGREES IN SOME OF THE NORMALLY WARMER LAKE PLAIN AND URBAN AREAS. THURSDAY AND THURSDAY NIGHT CONTINUE TO LOOK POTENTIALLY ACTIVE, AS AN ANOMALOUSLY MOIST AIR MASS (PRECIPITABLE WATER VALUES AT OR ABOVE 2") GETS FUNNELLED NORTHWARD INTO NY AND PA, AHEAD OF AN APPROACHING COLD FRONT, AND INTO A DEVELOPING UPPER JET ENTRANCE REGION.
352 AM CDT WED AUG 19 2015 (Today and Tonight) There will be a chance of rain and cooler temperatures the next 24 hours across West Central Texas. A cold front this morning was located near a Oklahoma City to Childress to Lubbock line. The more important feature will be the southward movement of the cold front, making to along a San Angelo to Brownwood line by 20Z and south of the I-10 corridor by 00Z. For tonight, the cold front will be south of our area with gusty north winds behind it during the early evening. Will keep the chance Pops across West Central Texas, with the highest numbers across southeast part of the area. Expect cooler temperatures with lows in the 60s, possibly a few 50s across the northern Big Country.
DRIER AIR WRAPPING AROUND UPPER LOW MAY EVENTUALLY ERODE LOW CLOUDS OVER THE AREA LATER THIS MRNG AND AFTERNOON. HOWEVER LARGE STRATUS SHIELD ASSOCIATED WITH STRONG LOW PRESSURE AND LOW LEVEL COLD AIR ADVECTION SURGING EWD INTO WESTERN WI. BUT SHOULD EVENTUALLY OVERSPREAD THE AREA LATE TODAY AND TONIGHT AS UPPER LOW BEGINS SHIFTING E-NE. AND CORE OF COOLER AIR SLIDES OVER THE AREA. WILL ALSO CARRY LOW POPS FOR -RA CHANCES LATER TONIGHT ACROSS NORTHERN CWA AS UPPER LOW SHIFTS NORTHEAST.
WHILE WE RESIDE UNDER NORTHWEST FLOW ALOFT, THE THERMAL TROUGH WILL RETREAT FURTHER TODAY, ALLOWING TEMPERATURES TO COOL SLIGHTLY FROM THE NEAR RECORD TO RECORD HIGHS SEEN YESTERDAY.
630 AM EDT WED AUG 19 2015 LOW PRESSURE WILL MOVE THROUGH THE WESTERN GREAT LAKE TODAY. THE COLD FRONT ASSOCIATED WITH THE LOW WILL MOVE EAST ACROSS THE REGION TONIGHT INTO THURSDAY MORNING.
TROUGHING MOVING INTO THE PACIFIC NORTHWEST WILL SUPPRESS THE AREA OF HIGH PRESSURE. THIS WILL RESULT IN HIGH TEMPS THAT ARE SEVERAL DEGREES COOLER THURSDAY OR ABOUT 3 DEGREES ABOVE NORMAL.
AS THE TROUGH MOVES ACROSS THE GREAT LAKES REGION AND THE COLD FRONT CONTINUES TO MOVE IN FROM THE NORTHWEST, WE WILL CONTINUE TO RECEIVE IMPULSES AHEAD OF THE FRONT IN ADDITION TO THE GULF MOISTURE BROUGHT IN FROM THE SOUTHERLY FLOW OF AIR.
WITH HIGH PRESSURE OVER THE FRONT RANGE OF MONTANA. THE UPPER LEVEL LOW WAS OVER EASTERN SOUTH DAKOTA. CURRENT SURFACE ANALYSIS PLACES LOW OVER NORTHWESTERN IOWA INTO SOUTHWESTERN MINNESOTA WITH HIGH PRESSURE WORKING INTO THE LEE OF THE NORTHERN ROCKIES. UPPER LEVEL ANALYSIS PLACES CUT OFF LOW OVER EASTERN SOUTH DAKOTA WITH RIDGE OFF THE WEST COAST. WEAK SHORT WAVE NOTED IN CYCLONIC FLOW BEHIND THE LOW IS RESULTING IN SOME SHOWERS/THUNDERSTORMS OVER WESTERN NORTH DAKOTA. UPPER LOW WILL SLOWLY LIFT TOWARDS THE NORTHEAST WITH RAIN OVER THE SOUTHERN JAMES RIVER VALLEY SLOWLY TAPERING OFF FROM WEST TO EAST. UPPER LOW LIFTS OVER MINNESOTA WITH RIDGING DEVELOPING OVER OUR AREA.
149 AM EDT WED AUG 19 2015 A COLD FRONT WILL MOVE EAST ACROSS THE REGION LATE WEDNESDAY NIGHT THROUGH THURSDAY MORNING. HIGH PRESSURE WILL QUICKLY SPREAD UP THE OHIO VALLEY INTO THURSDAY NIGHT THEN SLOWLY SHIFT INTO NEW ENGLAND THROUGH THE WEEKEND. LOW PRESSURE IS EXPECTED TO MOVE NORTHEAST AND FORCE THE COLD FRONT EAST ACROSS THE AREA WEDNESDAY NIGHT INTO THURSDAY MORNING. AS STORM SYSTEM MOVES CLOSER INTO THE GREAT LAKES WITH APPROACHING COLD FRONT. AS COLD FRONT SWEEPS EAST ACROSS THE AREA THURSDAY.
A COLD FRONT WILL PROGRESS EAST ACROSS THE GREAT LAKES/OHIO VALLEY TONIGHT AND PUSH SLOWLY EAST OF THE APPALACHIANS INTO THE MID ATLANTIC REGION THURSDAY INTO THURSDAY NIGHT. THEREFORE WILL KEEP POPS IN THE HIGH CHC RANGE AND MENTION SCT SHOWERS/TSTMS. AN INCREASE IN CYCLONIC FLOW ALOFT AHEAD OF IMPRESSIVE MID LEVEL CYCLONE FOR THIS TIME OF YEAR OVER THE WRN GREAT LAKES.
433 AM CDT WED AUG 19 2015 Currently, a cold front is located just north of the CWA and is pushing southward. Within the next couple of hours, the cold front is expected to enter the northern Permian Basin. Temperatures are quite a bit cooler behind the front so high temperatures for today will be reached this morning/early this afternoon just prior to frontal passage. The best chances for storms will be this afternoon mainly from the Lower Trans Pecos southward to the Davis Mountains where the greatest instability will be present. Rain chances will shift toward the Lower Trans Pecos by tonight with overnight lows cooling into the upper 50s to mid 60s across the area.
342 AM EDT WED AUG 19 2015 LOW PRESSURE WILL MOVE THROUGH THE WESTERN GREAT LAKE TODAY. THE COLD FRONT ASSOCIATED WITH THE LOW WILL MOVE EAST ACROSS THE REGION TONIGHT INTO THURSDAY MORNING.