Aikyam-Lab/Synoptic-Bench huggingface dataset:
/ISSUED 447 AM CDT TUE JUL 28 2015/ LARGE HIGH PRES RIDGE REMAINS THE PRIMARY FEATURE OVER THE SRN CONUS PER THE LATEST WV IMAGERY AND UA ANALYSIS. OUR AREA CONTINUES UNDER AN ELY FLOW REGIME ALOFT ALONG THE SRN EDGE OF THE HIGH WITH DEEPER MOISTURE FURTHER SOUTH OVER THE GULF OF MEXICO. THE RIDGE ALOFT WILL MAINTAIN ITS INFLUENCE ON OUR WEATHER THROUGH WEDNESDAY. THERE ARE A FEW ISLTD SPOTS WHERE HEAT INDICES COULD EXCEED THE THRESHOLD OF 108 DEGREES DURING THE AFTN BUT THESE LOCALIZED SPOTS APPEAR TO COINCIDE WITH URBAN AREAS WHERE TEMPERATURES TEND TO RUN A LITTLE WARMER AS A RULE.
AS WE HEAT UP ABOUT 10 DEGREES THIS AFTERNOON WILL SEE STRONGER WINDS ALOFT MIX DOWN AND SHOULD SEE A FEW GUSTS IN THE 60 MPH RANGE IN THE HIGH WIND WARNING AREAS. TEMPERATURES WILL BE IN THE LOWER 70S THIS AFTERNOON WHICH IS MORE REPRESENTATIVE OF LATE SEPTEMBER THAN LATE JULY.
LOW LEVEL TEMPERATURES ARE JUST SLIGHTLY HIGHER THIS MORNING COMPARED TO YESTERDAY MORNING AS THE HIGH PRESSURE REMAINS IN CONTROL OVERHEAD. WARMER ACTUAL TEMPS WITH NO HEAT ADVISORY. AS THE PRESSURE COOKING RIDGE BACKS OFF OVER THE COMING DAYS. AS THE RIDGE BACKS OFF TO THE WEST. IT WILL ALLOW THE LARGE SCALE TROUGH TO EASE DOWN INTO THE AREA BRINGING WITH IT AN INCREASE IN CHANCES OF SH/TS BY THE END OF THIS WEEK. A COLD FRONT WILL APPROACH THE CENTRAL GULF COAST AT THE END OF THE WEEK.
745 AM EDT TUE JUL 28 2015 HIGH PRESSURE REMAINS OFFSHORE THROUGH MIDWEEK.
YET ANOTHER HOT AND HUMID AFTERNOON TODAY WITH UPPER RIDGE PRETTY MUCH CENTERED OVER EASTERN OKLAHOMA AND WESTERN ARKANSAS. THE LOCATION OF THE UPPER HIGH SHOULD SERVE AS MORE OF AN ADDED DETERRENT TO DEVELOPMENT. LEE TROUGH WILL RESULT IN SLIGHTLY STRONGER LOW LEVEL FLOW THAN PAST FEW DAYS. /ISSUED 308 AM CDT TUE JUL 28 2015/ UPPER LEVEL HIGH PRESSURE WILL REMAIN IN PLACE TODAY. UPPER RIDGE BEGINS TO BREAK DOWN SOME LATE WEDNESDAY. RIDGE WILL CONTINUE A MODEST RETROGRADE. HOWEVER UPCOMING RAIN CHANCES WILL REMAIN LIMITED AS THE OVERALL STRENGTH OF THE RIDGE DOESNT APPEAR TO BE SIGNIFICANTLY COMPROMISED. SOME COOLER TEMPERATURES WILL WORK INTO THE AT LEAST THE NORTHERN PART OF THE FA BY LATER IN THE WEEK. MEAN RIDGE POSITIONING MAY STAY FAR ENOUGH WEST.
708 AM EDT TUE JUL 28 2015 A FRONT WILL REMAIN STALLED WELL TO THE SOUTHEAST OF THE REGION THROUGH WEDNESDAY WITH WEAK HIGH PRESSURE OVER THE AREA.
A LOW PRESSURE AREA EXTENDING ACROSS CENTRAL-NORTHEAST FLORIDA THIS MORNING. WINDS ARE FROM THE NORTHEAST PEAKING AT AROUND 50 KNOTS THANKS TO A UPPER LEVEL LOW PRESSURE LOCATED SOUTH OF CUBA.
406 AM PDT TUE JUL 28 2015 HOT AND DRY WEATHER CONTINUES THIS WEEK AS HIGH PRESSURE STRENGTHENS. HOT WEATHER RETURNS IN FORCE TO INTERIOR NORCAL THE NEXT SEVERAL DAYS AS HIGH PRESSURE BUILDS.
1028 AM EDT TUE JUL 28 2015 HIGH PRESSURE REMAINS OFFSHORE THROUGH MIDWEEK.
708 AM EDT TUE JUL 28 2015 HIGH PRESSURE WILL DOMINATE THROUGH WEDNESDAY.
ISOLD TO SCT TSTMS ARE EXPECTED TO DEVELOP ACROSS THE AREA LATER THIS AFTERNOON THROUGH TONIGHT AS A COLD FRONT AFFECTS THE SRN HIGH PLAINS.
704 AM EDT TUE JUL 28 2015 EXISTING HIGH PRESSURE WILL AGAIN PROVIDE A CLEAR SKY AND LIGHT SOUTHEAST WIND FOR TODAY. SOME INCREASING HIGH CLOUD TOWARD MORNING AS MOISTURE ARRIVES IN ADVANCE OF A COLD FRONT EXPECTED TO LIFT THROUGH ON WEDNESDAY. SE MICHIGAN FIRMLY UNDER THE INFLUENCE OF UPPER RIDGING AS THIS FEATURE PROGRESSES ACROSS THE REGION. AS DEWPOINTS CREEP UP INTO THE LOWER AND MIDDLE 60S.
MOSTLY CLEAR SKIES WITH CU DEVELOPING OVER THE HIGHER TERRAIN THIS AFTERNOON. NORTHWEST FLOW WILL WEAKEN AND GRADUALLY BACK TO WEST THROUGH WEDNESDAY IN RESPONSE TO A BUILDING UPPER LEVEL RIDGE OVER THE WESTERN U.
/ISSUED 311 AM CDT TUE JUL 28 2015/ Upper ridge centered over OK this morning will slide a little to the east as an upper trough swings across the Northern Plains. As the trough passes to the east the ridge will shift back to the west by this weekend becoming centered over the 4 corners region. Ridge remains in this location out through 240hrs.
BELOW NORMAL TEMPERATURES EARLY THIS WEEK WILL GIVE WAY TO A WARMING TREND FOR THE LATTER HALF OF THE WEEK AS A STRONG RIDGE OF HIGH PRESSURE BUILDS OVER THE GREAT BASIN. HEIGHTS ARE BEGINNING TO REBOUND IN WAKE OF YESTERDAYS TROUGH PASSAGE AND ASSOCIATED COLD FRONT. HIGH PRESSURE WILL BULGE NORTHWEST ACROSS THE EASTERN GREAT BASIN MID/LATE WEEK ALLOWING A CONTINUATION OF BUILDING HEIGHTS AND WARM ADVECTION THROUGH THAT TIME.
735 AM EDT TUE JUL 28 2015 MEDIUM RANGE MODELS CONTINUE TO HOLD THE REGION UNDER THE EASTERN PERIPHERY OF THE UPPER RIDGE THROUGH WEDNESDAY. 20 LONG RANGE MODELS CONTINUE TO SHOW GOOD AGREEMENT WITH A WEAK COLD FRONT PUSHING INTO NORTH GA WEDNESDAY NIGHT.
1102 AM CDT TUE JUL 28 2015 A 595DM UPPER RIDGE IS CENTERED JUST WEST OF THE MIDSOUTH. TEMPS ARE ALREADY INN THE LOWER 90S ACROSS THE AREA WITH DEWPOINTS IN THE MID TO UPPER 70S. A FEW POP UP THUNDERSTORMS ARE POSSIBLE MAINLY EAST OF THE MS RIVER WHERE THE RIDGING IS SLIGHTLY WEAKER. A COLD FRONT WILL MOVE THROUGH THE REGION CURRENTLY. FORECAST HIGHS WILL REACH THE MIDDLE AND UPPER 90S ON TUESDAY WITH DEWPOINTS IN THE LOW AND MIDDLE 70S.
A WEAK AREA OF LOW PRESSURE NORTHWEST OF TAMPA BAY IS FORECAST TO LIFT NORTH WITH SOUTHWEST FLOW PREVAILING ACROSS THE COVERAGE WARNING AREA.
/ISSUED 400 AM CDT Tue Jul 28 2015/ (Today and Tonight) Upper high pressure will be centered over Oklahoma through tonight with the forecast area along its southwestern periphery. Lows tomorrow morning will be in the lower to mid 70s.
QUASI ZONAL FLOW ACROSS THE NORTHERN TIER OF THE US WILL BEGIN TO AMPLIFY AND FURTHER WEAKEN THE RIDGE THAT IS CURRENTLY ANCHORED OVER THE SOUTHERN MS VALLEY. THE RIDGE WILL HOLD ACROSS THE TN VALLEY FOR ANOTHER DAY KEEPING TEMPS HOT AND PRECIP CHANCES LOW. DEWPOINTS WILL NOT MIX OUT MUCH TODAY AND THEY STARTED OUT STRONG THIS MORNING IN THE LOWER 70S. LIGHT WINDS TODAY WILL NOT HELP MIX OUT NOR HELP IT FEEL ANY COOLER. STRENGTHENING SW FLOW AHEAD OF APPROACHING COLD FRONT WILL LEAD TO DEVELOPMENT OF THICKER/LOWER STRATOCU BY 26/07Z.
FORECAST REMAINS ON TRACK FOR WARM SUMMERTIME DAY WITH HIGHS IN THE LOW TO MID 90S AND SCATTERED THUNDERSTORMS ACROSS NORTH FLORIDA, SOUTHEAST ALABAMA, AND SOUTHWEST GEORGIA.
1042 AM EDT THU JUN 25 2015 A WEAK AREA OF LOW PRESSURE WILL MOVE FROM THE OHIO VALLEY TODAY TO THE ATLANTIC COAST TONIGHT. BROAD TROF OVER THE NEUS AND GREAT LAKES CONTS. PERHAPS DUE TO THE TERRAIN BUT THERE IS ALSO A WEAK SFC TROF IN THAT AREA. SERIES OF WVS CONT TO MARCH EWRD THRU THE DEEPENING NEUS TROF. UPR TROF AND WEAK SFC BOUNDRIES CONTS A CHANCE OF SHWER SINTO FRI.
1205 PM EDT THU JUN 25 2015 A WEAK COLD FRONT WILL STALL TO OUR SOUTH BY THIS EVENING. WEAK LOW PRESSURE WILL TRACK EAST ALONG THE FRONT. PASSING SOUTH OF NEW ENGLAND TONIGHT AND FRIDAY AS HIGH PRESSURE BUILDS IN FROM THE NORTH.
653 AM CDT THU JUN 25 2015 FOR 12Z TAFS /ISSUED 351 AM CDT THU JUN 25 2015/ UPPER LEVEL RIDGING WILL CONTINUE TO HOLD ACROSS THE FORECAST AREA FOR AT LEAST THE NEXT 24 HOURS. HOWEVER LOWS ARE EXPECTED TO REMAIN IN THE LOW TO MID 70S. THE AXIS OF THE UPPER RIDGE WILL WEAKEN AND SHIFT EASTWARD OVERNIGHT AND INTO FRIDAY. AS AN UPPER LEVEL TROUGH BEGINS TO AMPLIFY AND DIG SOUTHWARD FROM CANADA. AS THE UPPER LEVEL TROUGH STRENGTHENS ON FRIDAY. AND SUBSEQUENTLY A COLD FRONT WILL DEVELOP AND TRAIL TO THE SOUTHWEST. MODEL CONSENSUS IS IN FAIRLY GOOD AGREEMENT THAT THE COLD FRONT WILL MAINTAIN ITS STRENGTH AND WILL BE ABLE TO MAKE IT THIS FAR SOUTH.
9C WHICH IS 2 DEGREES COOLER THAN THE PREVIOUS COUPLE OF DAYS FROM 12Z CAPE SOUNDINGS. 5 DEGREES COOLER THAN FORECAST AT THIS LEVEL. VERY MOIST AND COOLER ALOFT THIS MORNING ON THE KXMR SOUNDING. WEAK HIGH PRESSURE RIDGING CONTINUES ACROSS THE CENTRAL/SOUTH-CENTRAL FLORIDA PENINSULA.
40 HIGH PRESSURE LINGERING OVERHEAD WILL HELP SUPPRESS MOST CONVECTION FOR MOST OF TODAY. AS THE RIDGE TO THE EAST WEAKENS THESE NEXT COUPLE OF DAYS. WE ARE STILL LOOKING FOR THE AMPLIFICATION OF THE UPPER RIDGE TO THE WEST.
/ISSUED 409 AM CDT THU JUN 25 2015/ WEATHER TODAY WILL BEGIN WITH AN UPPER LEVEL RIDGE CENTERED OVER THE FOUR STATE REGION AND HIGH PRESSURE AT THE SURFACE. AS A RIDGE BUILDS OVER THE WESTERN U. DRIVING A TROUGH SOUTH INTO THE REGION ON FRIDAY. THIS WILL BRING A COLD FRONT SOUTH TO THE RED RIVER LATE FRIDAY.
1108 AM CDT THU JUN 25 2015 SHOWERS ACROSS THE FAR SE FORECAST AREA ASSOCIATED WITH A LOW TO OUR SOUTH SHOULD MOVE OUT BY MIDDAY AS THE LOW MOVES OFF TO THE EAST. EXPECTING VFR CONDITIONS AT ALL SITES THIS AFTERNOON AS THE LOW PRESSURE SYSTEM THAT BROUGHT SHOWERS AND REDUCED CIGS TO THE AREA THIS MORNING WILL BE OUT OF THE REGION. DRIER AIR WILL TO BUILD IN BEHIND THE LOW.
MUCH WARMER WEATHER REMAINS ON TRACK FOR TODAY. INCREASING MID AND HIGH CLOUDS AND SLIGHTLY COOLER TEMPERATURES ARE EXPECTED OVER THE WEEKEND. BUILDING HIGH PRESSURE OVER THE GREAT BASIN WILL LEAD TO A WARMER AIRMASS. COOLER WEATHER RETURNS TOMORROW AND OVER THE WEEKEND.
ALBEIT MODEST WESTERN ATLANTIC RIDGE IS ALIGNED ACROSS THE FLORIDA PENINSULA AND EXTENDS WELL INTO THE GULF OF MEXICO. (REST OF TODAY) GIVEN A LOW AND MID LEVEL RIDGE AXIS NEARBY AND SIGNIFICANT DRY AIR ABOVE 850 MB. WITH THE WESTERN ATLANTIC RIDGE OVER THE FLORIDA PENINSULA SAGGING SOUTHWARD AND SLOWLY WEAKENING.
MID LEVEL CLOUDS WILL BEGIN TO INCREASE ACROSS N/NW OK AS A COLD FRONT APPROACHES FROM THE NORTH FRIDAY MORNING. THE WRN RIDGE IS EXPECTED TO CONTINUE TO BUILD THROUGH THE DAY. WITH A SHORT WAVE TROUGH DEVELOPING UPSTREAM OVER THE NRN HIGH PLAINS. WITH COOLER CONDITIONS DEVELOPING BEHIND THE FRONT. WITH THE SRN PLAINS REMAINING BOOKENDED BETWEEN AN WRN RIDGE AND ERN TROUGH.
942 AM EDT THU JUN 25 2015 AN UPPER-LEVEL RIDGE ACROSS THE SOUTHERN STATES WILL HOLD HOT TEMPERATURES ACROSS THE FORECAST AREA THROUGH FRIDAY.
1033 AM EDT THU JUN 25 2015 HIGH PRESSURE WILL WEAKEN LATER TODAY. LOW PRESSURE WILL MOVE ACROSS NORTHERN VIRGINIA THURSDAY NIGHT. COLD FRONT WILL MOVE SOUTH OF THE AREA FRIDAY.
BROAD HIGH PRESSURE EXTENDING WEST ACROSS THE GULF FROM THE ATLANTIC WILL RESULT IN SEASONAL WEATHER. HIGH PRESSURE OFFSHORE IS PROVIDING THE SYNOPTIC BACKDROP FOR THE SHORT TERM. BY TONIGHT RIDGING WILL BEGIN TO AMPLIFY OVER THE WEST WHILE TROUGHING BEGINS TO DEEPEN OVER THE PLAINS AND THE MID WEST.
659 AM CDT THU JUN 25 2015 07Z/2AM SURFACE ANALYSIS SHOWS LOW PRESSURE CENTERED OVER SOUTHWEST IOWA. WITH HIGH TEMPERATURES RANGING FROM THE LOWER 80S FAR NORTH AROUND GALESBURG AND LACON TO THE LOWER 90S SOUTH OF I-70. INTERACTING WITH A COLD FRONT TO PRODUCE ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS.
835 AM EDT THU JUN 25 2015 A WEAK AREA OF LOW PRESSURE WILL MOVE FROM THE OHIO VALLEY TODAY TO THE ATLANTIC COAST TONIGHT. BROAD TROF OVER THE NEUS AND GREAT LAKES CONTS. PERHAPS DUE TO THE TERRAIN BUT THERE IS ALSO A WEAK SFC TROF IN THAT AREA. SERIES OF WVS CONT TO MARCH EWRD THRU THE DEEPENING NEUS TROF. UPR TROF AND WEAK SFC BOUNDRIES CONTS A CHANCE OF SHWER SINTO FRI.
622 AM CDT THU JUN 25 2015 HIGH PRESSURE ALOFT WILL PERSIST OVER THE REGION THROUGH TONIGHT THEN BEGIN YIELDING TO AN AMPLIFYING UPPER TROUGH OVER THE MIDWEST AND MID MISSISSIPPI RIVER VALLEY ON FRIDAY. /ISSUED 243 AM CDT THU JUN 25 2015/ THE UPPER LEVEL PATTERN WILL BEGIN TO AMPLIFY TODAY WITH BUILDING HIGH PRESSURE ACROSS THE WESTERN CONUS AND A DEEPENING TROUGH ACROSS THE NORTHERN AND CENTRAL PLAINS. AN ISOLATED SHOWER IS NOT OUT OF THE QUESTION ACROSS THE SOUTHEAST ZONES THIS AFTERNOON DUE TO A VERY WEAK UPPER TROUGH IN THE GULF. THE NORTHWEST ZONES MAY REACH THE UPPER 90S BY AFTERNOON DUE TO SOUTHWEST WINDS AHEAD OF AN APPROACHING COLD FRONT.
931 AM EDT THU JUN 25 2015 HIGH PRESSURE WILL SLOWLY BUILD TOWARD THE REGION TODAY.
WITH HIGH PRESSURE STILL CONTROLLING THE WEATHER. ALONG THE EDGE OF THE HIGH. HIGH PRESSURE WILL KEEP THINGS DRY DURING THE DAY. CHATTANOOGA AIRPORT, TN 96 75 90 72 / 20 10 60 70 KNOXVILLE MCGHEE TYSON AIRPORT, TN 94 73 89 71 / 10 10 60 70 OAK RIDGE, TN 95 73 88 71 / 10 10 60 70 TRI CITIES AIRPORT, TN 92 68 86 68 / 10 30 60 60.
RAIN CHANCES WILL BE ON THE INCREASE FRIDAY AS THE UPPER LEVEL RIDGE RESPONSIBLE FOR TODAY'S HOT TEMPERATURES MOVES OFF TO THE EAST AND OPENS THE DOOR FOR A PRETTY SIGNIFICANT PATTERN CHANGE OVER THE NEXT SEVERAL DAYS.
1025 AM EDT THU JUN 25 2015 HIGH PRESSURE CONTINUES TO HANG AROUND THE PENINSULA OF FLORIDA AT THE SURFACE. WITH THE RIDGE AXIS SITTING OVER PORTIONS OF SOUTH CENTRAL FLORIDA THIS MORNING. FLOW AROUND THE RIDGE AXIS TODAY WILL RESULT IN THE MORNING NATURE COAST ACTIVITY SLIDING INLAND AND ANY SEA BREEZE CONVECTION ALONG THE REST OF WEST CENTRAL AND SOUTHWEST FLORIDA FOCUSING MORE OVER THE INTERIOR WHERE THE BEST BOUNDARY COLLISIONS SHOULD OCCUR LATER TODAY. HIGH PRESSURE WILL REMAIN CENTERED OVER THE EASTERN AND SOUTHEASTERN GULF OF MEXICO THROUGH THE UPCOMING WEEKEND.
A COLD FRONT WILL EDGE INTO THE AREA LATER TONIGHT. STAGNANT MID- LEVEL FLOW BECOMES NORTHWEST BY TONIGHT AS LONG-AWAITED AMPLIFICATION OF WESTERN CONUS RIDGE GETS UNDERWAY. CHANCES FOR THUNDERSTORMS REMAIN IN FORECAST FOR NORTHWESTERN SECTIONS THIS AFTERNOON AS INSTABILITY INCREASES ALONG PRE-FRONTAL SURFACE TROF AND LEAD VORTICITY MAXIMUM EMERGES FROM STRENGTHENING MID-LEVEL FLOW. COLD FRONT REACHES NORTHERN SECTIONS BY DAYBREAK FRIDAY.
900 AM PDT THU JUN 25 2015 HIGH PRESSURE WILL BRING FAIR AND WARM WEATHER THIS WEEK WITH SOME COASTAL CLOUDS EACH NIGHT AND MORNING.
1024 AM CDT THU JUN 25 2015 A RIDGE ALOFT WILL MAINTAIN THE GENERALLY CLEAR. MID LEVEL CLOUDS WILL BEGIN TO INCREASE ACROSS N/NW OK AS A COLD FRONT APPROACHES FROM THE NORTH FRIDAY MORNING. THE WRN RIDGE IS EXPECTED TO CONTINUE TO BUILD THROUGH THE DAY. WITH A SHORT WAVE TROUGH DEVELOPING UPSTREAM OVER THE NRN HIGH PLAINS. WITH COOLER CONDITIONS DEVELOPING BEHIND THE FRONT. WITH THE SRN PLAINS REMAINING BOOKENDED BETWEEN AN WRN RIDGE AND ERN TROUGH.
SUNNY AND WARMER TODAY. WATER VAPOR SATELLITE PICS SHOWING UPPER RIDGE DEVELOPMENT ALONG THE WEST COAST THIS MORNING. MUCH-ADVERTISED RIDGE IS FINALLY BUILDING IN DURING THE SHORT-TERM FORECAST PERIOD.
1206 PM EDT THU JUN 25 2015 AN UPPER-LEVEL RIDGE ACROSS THE SOUTHERN STATES WILL HOLD HOT TEMPERATURES ACROSS THE FORECAST AREA THROUGH FRIDAY.
(NO CHANGES BEYOND THIS POINT) AS WE SHIFT BACK TO A PATTERN DOMINATED BY A STRONG RIDGE OVER THE GREAT BASIN. FRIDAY WILL BE A TRANSITION DAY AS THE HIGH CENTER CONSOLIDATES THROUGH THE REGION AND THEN NORTH OF US.
LOW LEVEL RIDGE AXIS IS A LITTLE FURTHER S THAN YESTERDAY RESULTING IN A BIT STRONGER MEAN LAYER (1000-500 MB) FLOW THAN YESTERDAY. A MID LEVEL TROUGH AXIS ORIENTED W TO E ALSO NOTED ACROSS THE NRN FL PENINSULA WITH A VORT LOBE CENTERED OVER EXTREME SE GA.
1223 PM EDT THU JUN 25 2015 HIGH PRESSURE WILL SLOWLY BUILD TOWARD THE REGION TODAY.
/ISSUED 331 AM CDT Thu Jun 25 2015/ (Today and Tonight) Very quiet weather with no precipitation expected over the next 24 hours as upper level ridging expands from the southwestern U.
/ISSUED 225 AM CDT THU JUN 25 2015/ UPPER LEVEL RIDGE WILL CONTINUE TO BUILD ACROSS THE GREAT BASIN OVER THE NEXT 24 HOURS RESULTING IN NORTHERLY TO NORTHWESTERLY FLOW ACROSS THE REGION. THE LOW CLOUD RISK APPEARS LESS FRIDAY MORNING THAN WE WILL LIKELY SEE THIS MORNING. AS THE UA RIDGE IS PROGGED TO BECOME RE-ESTABLISHED AND AMPLIFY NW OF THE FOUR-CORNERS REGION BY LATE WEEK. THE AMPLIFICATION OF THE SAID UA RIDGE IS SHOWN TO BE QUITE IMPRESSIVE AS 500 MB HEIGHT FIELDS ARE EXPECTED TO CLIMB TO AOA 597 DAM THAT WILL BE CENTERED ACROSS SERN NV/SWRN UT. WITH THE UA RIDGE TO OUR WEST THIS WILL RESULT IN NWRLY FLOW ALOFT DOMINATING ACROSS THE SOUTHERN PLAINS.
BAIN /ISSUED 622 AM CDT THU JUN 25 2015/ HIGH PRESSURE ALOFT WILL PERSIST OVER THE REGION THROUGH TONIGHT THEN BEGIN YIELDING TO AN AMPLIFYING UPPER TROUGH OVER THE MIDWEST AND MID MISSISSIPPI RIVER VALLEY ON FRIDAY. /ISSUED 243 AM CDT THU JUN 25 2015/ THE UPPER LEVEL PATTERN WILL BEGIN TO AMPLIFY TODAY WITH BUILDING HIGH PRESSURE ACROSS THE WESTERN CONUS AND A DEEPENING TROUGH ACROSS THE NORTHERN AND CENTRAL PLAINS. AN ISOLATED SHOWER IS NOT OUT OF THE QUESTION ACROSS THE SOUTHEAST ZONES THIS AFTERNOON DUE TO A VERY WEAK UPPER TROUGH IN THE GULF. THE NORTHWEST ZONES MAY REACH THE UPPER 90S BY AFTERNOON DUE TO SOUTHWEST WINDS AHEAD OF AN APPROACHING COLD FRONT.
957 AM EDT THU JUN 25 2015 A WEAK COLD FRONT WILL STALL TO OUR SOUTH BY THIS EVENING. WEAK LOW PRESSURE WILL TRACK EAST ALONG THE FRONT. PASSING SOUTH OF NEW ENGLAND TONIGHT AND FRIDAY AS HIGH PRESSURE BUILDS IN FROM THE NORTH.
515 PM MST MON DEC 7 2015 DECIDED TO EXTEND THE HIGH WIND WARNING FOR CONVERSE COUNTY AS DEER CREEK BETWEEN GLENROCK AND DOUGLAS CONTINUES TO HAVE GUSTS OF 55 TO 60 MPH. BUT THERE HAS BEEN A BREAK IN THE HIGH WINDS OVER MUCH OF THE REST OF THE WIND PRONE AREAS.
Low level moisture/clouds will continue to erode from the west as drier high pressure overspreads the region.
922 PM CST MON DEC 7 2015 WENT ALONG WITH UPDATE FROM NWS BISMARCK AND ELIMINATED RISK OF FREEZING PRECIP EARLY TUESDAY MORNING IN FAR SW FCST AREA. AND ALONG WITH IT THE THERMAL RIDGE CENTERED OVER THE SOUTHERN CWA. THIS ALONG WITH WINDS AROUND 5 TO 10 KTS FROM THE SOUTH AND SOUTHWEST SHOULD HELP KEEP TEMPS VERY MILD WITH LOWS IN THE LOW 30S. ROAD TEMP FORECASTS HAVE SFC TEMPS CLIMBING TO ABOVE FREEZING AROUND 10 AM. WILL CONTINUE TO KEEP A BRIEF FREEZING RAIN MENTION FOR A FEW HOURS BUT WITH HIGH UNCERTAINTY WILL LEAVE ANY HEADLINES OUT FOR NOW.
PRECIPITATION TYPE EARLY ON IS A BIT TRICKY AS SURFACE TEMPERATURES MAY BE JUST COOL ENOUGH FOR SOME FREEZING RAIN.
A couple of weak upper troughs embedded in this flow will transit the Central Plains this week sending cold fronts into west Texas, but the lack of amplification of the pattern means cold air will be lacking.
/ISSUED 300 PM CST MON DEC 7 2015/ BROAD REGION OF HIGH PRESSURE AT SFC AND ALOFT. AND WITH LIGHT SOUTHERLY FLOW SETTING UP ABOVE THE VERY SHALLOW COOLER LAYER SET UP BY FRONTAL BOUNDARY REMNANTS DRIFTING ACROSS AREA. TRENDING TOWARDS THE WARMER MAV TEMPS FOR NEXT COUPLE OF DAYS PER CURRENT TRENDS ON TEMPS AND DEWPOINTS.
DRY CONDITIONS TUESDAY WITH HIGHS AROUND 4-6F WARMER THAN HIGHS TODAY.
1024 PM EST MON DEC 7 2015 HIGH PRESSURE WILL BE IN CONTROL OF THE REGION FOR THE NEXT COUPLE OF DAYS RESULTING IN DRY WEATHER AND ABOVE NORMAL TEMPERATURES.
/ISSUED 355 PM CST MON DEC 7 2015/ AS HIGH PRESSURE MOVES OFF TO THE EAST WE SHOULD SEE THE RETURN OF VERY LIGHT ONSHORE WINDS ACROSS SE TX BY LATE TOMORROW. 41 LIGHT WIND REGIME TODAY AND TOMORROW AS RIDGE OF HIGH PRESSURE DRAPED ACROSS SETX/COASTAL BEND SLOWLY WEAKENS AND MOVES EAST.
HIGH PRESSURE AT THE SFC WILL PREVAIL TONIGHT. /ISSUED 342 PM CST MON DEC 7 2015/ SFC OBS AND ANALYSIS SHOWS 1025 MB RIDGE ORIENTED SW-NE FM ERN TX INTO THE LOWER MS VALLEY PROVIDING LT NELY WINDS OVER THE CWA. SEASONAL TEMPERATURES CAN BE EXPECTED OVERNIGHT TONIGHT WITH LOWS IN THE LOWER TO MIDDLE 40S AS THE RIDGE REMAINS OVER THE REGION. A DEEPER TROF WILL DIG OVER THE WRN CONUS. AS THE TROF MOVES EAST. THE UPPER LVL TROF WILL APPROACH THE AREA SAT INTO SUN. WITH A SFC COLD FRONT CROSSING TX AND MOVING TOWARD LA. BRINGING DRIER AIR AND COOLER TEMPERATURES.
544 PM CST MON DEC 7 2015 Behind the weak boundary that moved through the area this morning, high pressure is building back into the Midwest. The high pressure and inversion aloft has trapped the low level moisture over the region for days now, and no mixing has occurred to scour it out.
A LOW PRESSURE SYSTEM WILL TRACK NORTHEAST OFF THE CAROLINA COAST TONIGHT AS A POTENT UPPER LEVEL DISTURBANCE TRACKS EASTWARD THROUGH THE MID ATLANTIC. HIGH PRESSURE WILL BUILD INTO THE CAROLINAS FROM THE WEST ON TUESDAY. A WEAK AREA OF LOW PRESSURE OFF THE SOUTHEAST COAST WILL TRACK NORTHEAST OFF THE CAROLINA COAST THROUGH TONIGHT AS A POTENT UPPER LEVEL DISTURBANCE TRACKS EASTWARD THROUGH THE MID ATLANTIC. WHILE SOME SPRINKLES WILL BE POSSIBLE WITH THE PASSAGE OF THE UPPER TROUGH EARLY THIS EVENING. SUBSIDENCE IN THE WAKE OF THE UPPER TROUGH PASSAGE BETWEEN 00 TO 06Z WILL LEAD TO CLEARING AND THE POTENTIAL FOR PATCHY DENSE FOG DEVELOPMENT. EXPECT DRY/PLEASANT CONDITIONS AS WEAK HIGH PRESSURE BUILDS OVER THE CAROLINAS FROM THE WEST HIGHS IN THE UPPER 50S TO LOWER 60S.
Behind the weak boundary that moved through the area this morning, high pressure is building back into the Midwest. The high pressure and inversion aloft has trapped the low level moisture over the region for days now, and no mixing has occurred to scour it out.
High pressure will build from the Lower Mississippi River Valley to the Southern Appalachians overnight. With the calm winds and clear skies, radiational cooling will help temperatures drop into the lower to mid 40s overnight.
HIGH PRESSURE CONTINUES TO BUILD NORTHWEST OF THE REGION AND COOLER AIRMASS HAS SETTLED OVER THE REGION WITH TEMPS FALLING QUICKLY THIS EVENING UNDER CLEAR SKIES AND NEAR CALM WINDS. HIGH PRESSURE WILL REMAIN JUST NORTH OF THE REGION ON TUESDAY WITH MOSTLY SUNNY SKIES AND TEMPS NEAR SEASONABLE VALUES IN THE MID/UPPER 60S ALONG THE COAST IN DEVELOPING NORTHEAST FLOW AROUND 10-15 MPH. WHILE LIGHTER WINDS ARE EXPECTED INLAND ALONG WITH TEMPS IN THE LOWER 70S.
TEMPERATURES SHOULD STAY ABOVE FREEZING IN MOST AREAS TONIGHT EXCEPT SOME AREAS IN THE FAR NORTH.
916 PM CST MON DEC 7 2015 MIDEVENING SURFACE ANALYSIS SHOWED A PRESSURE RIDGE CENTERED OVER THE LOWER MS RIVER VALLEY. HIGH PRESSURE WILL COVER MUCH OF THE EASTERN U. DRY WEATHER WILL CONTINUE FOR TUESDAY AND TUESDAY NIGHT AS HIGH PRESSURE REMAINS IN CONTROL. TEMPERATURES WILL REMAIN ABOVE NORMAL WITH HIGHS IN THE LOW TO MID 60S AND LOWS IN THE MID TO UPPER 40S.
AND ALONG WITH IT THE THERMAL RIDGE CENTERED OVER THE SOUTHERN CWA. THIS ALONG WITH WINDS AROUND 5 TO 10 KTS FROM THE SOUTH AND SOUTHWEST SHOULD HELP KEEP TEMPS VERY MILD WITH LOWS IN THE LOW 30S. ROAD TEMP FORECASTS HAVE SFC TEMPS CLIMBING TO ABOVE FREEZING AROUND 10 AM. WILL CONTINUE TO KEEP A BRIEF FREEZING RAIN MENTION FOR A FEW HOURS BUT WITH HIGH UNCERTAINTY WILL LEAVE ANY HEADLINES OUT FOR NOW.
MEANWHILE A VERY DRY MID AND LOWER LEVEL PERSISTS ACROSS THE HIGH PLAINS. EVEN WITH THE HIGH CLOUDS. TOMORROW A WEAK SUBTLE TROUGH WILL PUSH ACROSS THE AREA. HOWEVER GOOD MIXING ALONG BEHIND THE TROUGH WILL LIKELY RESULT IN TEMPS VERY CLOSE TO TODAY. POST TROUGH WINDS ALSO BECOME BREEZY. MODELS ARE ALSO SHOWING SOME WEAK MID LEVEL LIFT ALONG AND POST TROUGH.
957 PM CST MON DEC 7 2015 SFC OBS SHOW ESSENTIALLY CALM WINDS PREVAILING OVER THE FORECAST AREA THIS EVENING AS HIGH PRESSURE SITS NEARLY OVERHEAD. HIGH PRESSURE AT THE SFC WILL PREVAIL TONIGHT. /ISSUED 342 PM CST MON DEC 7 2015/ SFC OBS AND ANALYSIS SHOWS 1025 MB RIDGE ORIENTED SW-NE FM ERN TX INTO THE LOWER MS VALLEY PROVIDING LT NELY WINDS OVER THE CWA. SEASONAL TEMPERATURES CAN BE EXPECTED OVERNIGHT TONIGHT WITH LOWS IN THE LOWER TO MIDDLE 40S AS THE RIDGE REMAINS OVER THE REGION. A DEEPER TROF WILL DIG OVER THE WRN CONUS. AS THE TROF MOVES EAST. THE UPPER LVL TROF WILL APPROACH THE AREA SAT INTO SUN. WITH A SFC COLD FRONT CROSSING TX AND MOVING TOWARD LA. BRINGING DRIER AIR AND COOLER TEMPERATURES.
TONIGHT AND TUESDAY MAIN CONCERN TONIGHT WILL BE THE LOW CLOUDS AND FOG. ALONG WITH CHANCES FOR DRIZZLE AND FREEZING DRIZZLE. TEMPERATURES WERE IN THE LOWER TO MIDDLE 30S NORTH TO AROUND 40 SOUTH. UPPER LEVEL TROUGH IS EXPECTED TO MOVE ACROSS THE REGION. SURFACE TEMPERATURES WILL BE HOVERING AROUND FREEZING. THUS EXPECT SOME FREEZING DRIZZLE AT TIMES. ANY FREEZING DRIZZLE COULD PRODUCE A THIN COATING OF ICE ON AREA ROADWAY. SIDEWALKS AND BRIDGES. DRIZZLE OR FREEZING DRIZZLE SHOULD END BY MID MORNING.
CLOUDY AND FOGGY CONDITIONS PERSISTED THROUGH MOST OF THE DAY TODAY AS HIGH PRESSURE LUMBERED TO THE EAST TODAY. THE HIGH PRESSURE IS MOVING TO THE EAST OF OUR AREA. WARMER TEMPS. HIGH TEMPS WILL AGAIN BE ABOVE NORMAL ACROSS THE AREA FROM THE UPPER 40S TO THE LOW 50S.
1009 PM EST MON DEC 7 2015 HIGH PRESSURE WILL BUILD OVER THE REGION TONIGHT. NEGATIVE FACTORS INCLUDE THE LOWEST CONDENSATION PRESSURE DEFICITS STAYING NORTH/NW OF THE CWFA AND THE WARM GROUND TEMPS. WITH SOME EXPANSION OF THE LOW STRATUS TO THE NORTH AND LATEST GUIDANCE HITTING THE FOG EVEN MORESO THAN EARLIER. LOOKING AT LOWS 8-12F COOLER THAN LAST NIGHT.
LEE TROF IS ADVANCING THROUGH THE MT/WY PLAINS. WITH LEE TROF INTO THE ERN DAKOTAS BY THAT TIME. EXPECT TEMPS TO REMAIN TOO WARM FOR ANY FREEZING PCPN.