Aikyam-Lab/Synoptic-Bench huggingface dataset:
/ISSUED 149 PM CST Tue Jan 27 2015/ The main feature of interest is an upper low over the Western US. The initial low looks to move off to the NE around the top of a ridge over the center of the country.
645 PM EST TUE JAN 27 2015 HIGH PRESSURE WILL BUILD AND DECREASE CLOUDS TONIGHT. THIS COUPLED WITH UNIDIRECTIONAL UPSLOPE FLOW FROM THE NORTHWEST IN THE BOUNDARY LAYER INTO THE RIDGES HAS ALLOWED FOR AN INTENSIFYING TREND FOR SNOW SHOWERS IN THE RIDGES AS WELL. AND NOW LARGE SCALE LIFTING MECHANISM ALL OVERLAYING THE RIDGES FOR THE NEXT ROUGHLY 10 HOURS OR SO. WINTER WEATHER ADVISORIES WERE HOISTED FOR THE RIDGES THROUGH 1 AM. SHRTWV RIDGING WL MAINTAIN DRY CONDITIONS THROUGH WEDNESDAY NIGHT.
956 PM EST TUE JAN 27 2015 HIGH PRESSURE AND A DRY AND COLD AIRMASS WILL PUSH ACROSS THE AREA TONIGHT AND WEDNESDAY.
827 PM EST TUE JAN 27 2015 HIGH PRESSURE WILL BUILD AND DECREASE CLOUDS TONIGHT. A FEW MORE HOURS OF UPSLOPE SNOW SHOWERS SEEM LIKELY FOR THE RIDGES. EVEN IN THE RIDGES. SHRTWV RIDGING WL MAINTAIN DRY CONDITIONS THROUGH WEDNESDAY NIGHT.
HIGH PRES RIDGING SW ACRS THE AREA WILL MOVE SLOWLY EAST THROUGH WEDNESDAY. THIS WILL HELP MODIFY THE AIR MASS AT THE SURFACE WITH THE MORE MOIST AND COOLER GULF AIR HELPING TO KEEP TEMPERATURES ON WEDNESDAY LOWER THAN WHAT IS OCCURRING TODAY.
SO MADE SOME SMALL ADJUSTMENT TO THE HOURLY VALUES TO ACCOUNT FOR THE SLIGHTLY COOLER TEMPERATURES. SO TEMPERATURES COULD BE A DEGREE OR TWO WARMER THAN THE FORECAST.
502 PM CST TUE JAN 27 2015 WINDS WILL GRADUALLY BECOME LIGHT FROM THE SOUTHEAST OVERNIGHT AS HIGH PRESSURE MOVES EAST.
657 PM PST TUE JAN 27 2015 Areas of low clouds and fog will persist across portions of Inland Northwest as high pressure remains in place.
NW UPPER FLOW IS INTO AR WITH THE UPPER RIDGE BUILT OVER THE WESTERN PLAINS AND THE DEEP UPPER TROUGH WAS OVER THE EASTERN SEA BOARD.
BUILDING HIGH PRESSURE OVER THE REGION WILL KEEP WINDS MAINLY LIGHT AND VARIABLE ALONG WITH VFR CONDITIONS. WITH UPPER RIDGING OVER THE DESERT SW/SOUTHERN ROCKIES AND A MAJOR WINTER STORM AFFECTING THE NORTHERN MID ATLANTIC AND ESPECIALLY NEW ENGLAND. THIS HAS HELPED WARM HIGHS INTO THE LOWER 50S NEAR/WEST OF I-65. WITH HIGHS ABOUT 10 DEGREES COOLER IN WINCHESTER. AS HIGH PRESSURE BUILDS FROM THE MID MISSISSIPPI VALLEY TO THE OHIO VALLEY. AT LEAST DURING THE MORNING AND EARLY AFTERNOON SHOULD HELP TEMPER HIGHS ONLY INTO THE LOWER 50S.
STILL EXPECTING A DRY COLD FRONT TO PUSH INTO THE AREA TOWARDS DAYBREAK PROVIDING A REINFORCING SHOT OF COLD AIR FOR WEDNESDAY WHEN HIGH TEMPERATURES SHOULD NOT GET OUT OF THE 60S. WINDS WILL SHIFT FROM WESTERLY TO NORTHERLY TONIGHT AS A WEAK COLD FRONT PASSES THROUGH SOUTH FLORIDA. DRY AIR WILL BE REINFORCED THIS WEEK BY A PAIR OF COLD FRONTS. WEAK COLD FRONT WILL SILENTLY PASS THROUGH SOUTH FLORIDA TONIGHT.
ADDED A SLIGHT CHANCE OF FREEZING RAIN TO THE JACKSON AND STAR VALLEY THIS EVENING. WITH A BRIEF RETURN OF HIGH PRESSURE EXPECTED.
1045 PM EST TUE JAN 27 2015 HIGH PRESSURE WILL BUILD AND DECREASE CLOUDS TONIGHT. SHRTWV RIDGING WL MAINTAIN DRY CONDITIONS THROUGH WEDNESDAY NIGHT.
241 PM PST TUE JAN 27 2015 LOW PRESSURE WILL EXIT OUT OF THE REGION TONIGHT AS LIGHT VALLEY RAIN AND MOUNTAIN SNOW TAPERS OFF THIS EVENING.
928 PM CST TUE JAN 27 2015 HIGH PRESSURE ON THE SURFACE EXTENDED FROM THE GREAT LAKES REGION SOUTHWEST ACROSS THE FOUR STATE REGION THIS EVENING WHILE HIGH PRESSURE RIDGE ALOFT EXTENDED FROM SOUTH TEXAS ACROSS THE PLAINS AND INTO SOUTHERN CANADA. A SHARP RIDGE REMAINS OVER THE CENTRAL U. WITH A DEEP TROUGH OFF THE EAST COAST AND A DEEPENING TROUGH OFF THE WEST COAST. THE RIDGE WILL PROVIDE WARM TEMPS AND DRY WEATHER THROUGH WEDNESDAY.
655 AM EST SUN JAN 18 2015 A COLD FRONT WILL MOVE EAST OF THE REGION THIS MORNING. USHERING IN A COOLER AIRMASS FOR TODAY. HIGH PRESSURE AND SLIGHTLY WARMER TEMPERATURES WILL BUILD INTO THE REGION FOR MONDAY. ANOTHER CHANCE OF PRECIPITATION WILL RETURN FOR MIDWEEK AS A LOW PRESSURE SYSTEM MOVES THROUGH THE OHIO VALLEY. A FAIRLY NARROW AREA OF PCPN IS WORKING ITS WAY EAST ACROSS OUR AREA EARLY THIS MORNING IN ADVANCE OF AN APPROACHING COLD FRONT. EXPECT ISOLATED TO SCATTERED SHOWERS TO LINGER INTO THIS AFTERNOON AS THE MID/UPPER LEVEL TROUGH AXIS SWINGS ACROSS THE AREA.
HIGH PRESSURE WILL RETURN WITH DRY WEATHER EXPECTED FOR THE BEGINNING OF THE WORK WEEK.
A Pacific plume of moisture is aimed at Norcal today with a weak cold front passing through the area. The main band of showers associated with the cold front is currently extending from the coast around Eureka inland to western Shasta and Tehama counties.
WITH LIGHT SHOWERS REMAINING IN THE HIGHER ELEVATIONS FOR ANOTHER HOUR OR TWO. SKIES WILL CLEAR QUICKLY AS HIGH PRESSURE MOVES BACK IN FOR THE REST OF THE DAY. CHATTANOOGA AIRPORT, TN 55 34 58 36 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 52 34 55 35 / 20 0 0 0 OAK RIDGE, TN 53 33 54 35 / 20 0 0 0 TRI CITIES AIRPORT, TN 48 30 50 32 / 70 10 0 0.
954 AM EST SUN JAN 18 2015 COLD FRONT WILL CONTINUE PUSHING THROUGH THE REGION BY EARLY THIS AFTERNOON. CALM WINDS ARE STILL EXPECTED TO QUICKLY SHIFT TO THE NORTHWEST LATER THIS MORNING AND INCREASE AS A DRY COLD FRONT PUSHES THROUGH THE AREA. THE DEVELOPING TRAILING COLD FRONT FROM THIS LOW WILL MOVE ACROSS SOUTH FLORIDA THIS AFTERNOON. HIGH PRESSURE WILL BUILD INTO SOUTH FL FROM THE NW TONIGHT-MONDAY WITH A DRY CONTINENTAL AIRMASS MOVING IN.
FROM 10 TO 60 NM SOUTH OF THE LOWER AND MIDDLE KEYS. A LARGE REGION OF HIGH PRESSURE IS CENTERED OVER WESTERN TEXAS. WITH AN EXTENSIVE RIDGE REACHING ACROSS THE GULF OF MEXICO AND INTO SOUTH FLORIDA. THE COMBINATION OF A CUBAN LAND BREEZE AND WEAK ISENTROPIC LIFT PROLIFERATED SHOWER ACTIVITY ON THE FLORIDA STRAITS SOUTH OF THE LOWER AND MIDDLE KEYS OVERNIGHT. A LARGE AND SPRAWLING AREA OF HIGH PRESSURE CENTERED IN WESTERN TEXAS WILL SPREAD EASTWARD TODAY AND TONIGHT.
455 AM CST SUN JAN 18 2015 HIGH PRESSURE WILL DOMINATE TODAY WITH WIDESPREAD VFR CONDITIONS EXPECTED.
531 AM CST SUN JAN 18 2015 A VERY PLEASANT DAY IS EXPECTED ACROSS THE REGION AS SURFACE RIDGING SLIDES THROUGH THE REGION. MODEL GUIDANCE IS CONSISTENT IN SLIDING A WARM FRONT EASTWARD THROUGH THE REGION DURING THE OVERNIGHT HOURS. TEMPERATURES WILL HOLD STEADY OR BEGIN TO RISE AFTER MIDNIGHT AS WARM WESTERLY WINDS PULL WARMER AIR INTO THE AREA. ABOVE FREEZING TEMPERATURES SHOULD HAVE PROGRESSED AS FAR EAST AS THE I-29 CORRIDOR. SIDED WITH THE WARMER GUIDANCE FOR THE OVERNIGHT HOURS. WITH 925 MB TEMPS EVEN WARMER ON MONDAY THAN YESTERDAY SEE NO REASON IT WILL NOT WARM WELL INTO THE 40S WITH LOWER 50S IN THE MISSOURI VALLEY.
533 AM CST Sun Jan 18 2015 While surface cold front has already pushed into Indiana, a 500mb trough axis lingers further west across central Illinois early this morning. Airmass behind the cold front is of Pacific origin, with 08z/2am upstream temperatures across Iowa/northern Missouri in the lower to middle 30s. Have therefore gone 3-5 degrees above the warmer MAV numbers, resulting in highs ranging from the lower 40s north of the I-74 corridor to near 50 degrees across the far southwest around Jacksonville.
647 AM EST SUN JAN 18 2015 A COLD FRONT OVER THE MIDWEST WILL MOVE ACROSS THE AREA TODAY.
HIGH PRESSURE WILL BUILD THIS AFTERNOON BEHIND THE FRONT AND MAINTAIN DRY WEATHER THROUGH THE WEEK. HIGH PRESSURE BOTH NEAR THE SURFACE AND ALOFT WILL DOMINATE THROUGH THE REMAINDER OF THE WEEK. A COUPLE OF WEAK SHORT WAVES WILL MOVE INTO AND OVER THE RIDGE AND PROBABLY GENERATE SOME HIGH LAYER CLOUDS. BOTH MODELS SHOW DECENT OFFSHORE FLOW WHICH SHOULD BE SUFFICIENT TO WARM UP THE COAST AND PERHAPS PRODUCE GUSTY EASTERLY WINDS OVER THE RIDGES.
430 AM MST SUN JAN 18 2015 A RIDGE WILL BE OVER THE PLAINS THROUGH TONIGHT.
Subjective 12Z surface analysis showed a dry cold front to our west down central Tennessee, across northern Alabama, central Mississippi, and southeastern Louisiana, out to the Gulf waters. With the exception of these very light showers offshore, rain is very unlikely today with the weak cold front passage.
Then as the cold front passes late this morning snow levels will begin to fall again.
A MOISTURE-STARVED UPPER TROUGH IS CURRENTLY PASSING THROUGH THE REGION. COLD ADVECTION BEHIND THE TROUGH IS ALMOST NON-EXISTENT AND A MILD CONDITIONS ARE EXPECTED THIS AFTERNOON WITH HIGHS IN THE UPPER 50S NORTH TO LOWER 60S SOUTH.
542 AM EST SUN JAN 18 2015 LOW PRESSURE WILL MOVE UP THE EAST COAST TODAY AND WILL CONTINUE NORTH THROUGH NEW ENGLAND TONIGHT.
HIGH PRESSURE ALOFT WILL BECOME ESTABLISHED ACROSS THE WESTERN STATES MIDWEEK.
840 AM MST SUN JAN 18 2015 HIGH PRESSURE OVER THE DESERT SOUTHWEST IS EXPECTED TO KEEP OUR TEMPERATURES ABOVE NORMAL AND SKIES MOSTLY CLEAR THROUGH THE EARLY PART OF THE UPCOMING WORKWEEK. LOW PRESSURE THAT IS FORECAST TO DROP SOUTHWARD INTO THE REGION DURING THE MIDDLE PART OF THE WEEK WILL THEN BRING SOMEWHAT COOLER TEMPERATURES. AND A FEW SHOWERS OVER THE HIGHER TERRAIN EAST OF PHOENIX. TRANQUIL CONDITIONS PERSIST ACROSS THE REGION UNDER UPPER LEVEL RIDGING. MORNING TEMPERATURES ARE OFF TO A SLIGHTLY WARMER START THAN YESTERDAY AND WITH A RIDGE AXIS MOVING IN FROM THE WEST.
HIGH PRESSURE OVER THE DESERT SOUTHWEST IS EXPECTED TO KEEP OUR TEMPERATURES ABOVE NORMAL AND SKIES MOSTLY CLEAR THROUGH THE EARLY PART OF THE UPCOMING WORKWEEK. LOW PRESSURE THAT IS FORECAST TO DROP SOUTHWARD INTO THE REGION DURING THE MIDDLE PART OF THE WEEK WILL THEN BRING SOMEWHAT COOLER TEMPERATURES. AND A FEW SHOWERS OVER THE HIGHER TERRAIN EAST OF PHOENIX.
CALM WINDS ARE STILL EXPECTED TO QUICKLY SHIFT TO THE NORTHWEST LATER THIS MORNING AND INCREASE AS A DRY COLD FRONT PUSHES THROUGH THE AREA. THE DEVELOPING TRAILING COLD FRONT FROM THIS LOW WILL MOVE ACROSS SOUTH FLORIDA THIS AFTERNOON. HIGH PRESSURE WILL BUILD INTO SOUTH FL FROM THE NW TONIGHT-MONDAY WITH A DRY CONTINENTAL AIRMASS MOVING IN.
406 AM CST SUN JAN 18 2015 A MOISTURE-STARVED UPPER TROUGH IS CURRENTLY PASSING THROUGH THE REGION. COLD ADVECTION BEHIND THE TROUGH IS ALMOST NON-EXISTENT AND A MILD CONDITIONS ARE EXPECTED THIS AFTERNOON WITH HIGHS IN THE UPPER 50S NORTH TO LOWER 60S SOUTH.
259 AM PST SUN JAN 18 2015 HIGH PRESSURE WILL REMAIN OVER THE REGION FOR THE NEXT SEVERAL DAYS. LOTS OF HIGH CLOUDS OVER THE REGION THIS MORNING AS YET ANOTHER SHORT WAVE TROUGH JUST GLANCES NORTHERN CALIFORNIA. AREAS AROUND THE EDGE OF THE SJV WILL EXPERIENCE SOME FOG AS THE GROUND INTERSECTS THE LOW CLOUD DECK.
SO IT COULD STILL BE A LITTLE WARMER/WINDIER THEN WHAT THIS FORECAST WILL SHOW. IT IS SLOW IN COMING AND THE LOWER CLOUDS LOOK TO BE MAINLY NORTH OF INTERSTATE 80. SO I HAVE SLOWED THE ARRIVAL AND AM SATISFIED WITH THE LOW POPS WE HAVE.
A WEAK COLD FRONT WILL TRANSIT THE AREA THIS MORNING. WINDS SHOULD DIMINISH THIS AFTERNOON AS HIGH PRESSURE BUILDS IN. SOUTHERLY WINDS RETURN ON MONDAY AS HIGH PRESSURE PUSHES ON TO THE EAST.
1046 AM EST SUN JAN 18 2015 COLD FRONT CURRENTLY CROSSING THE MIDLANDS WILL BRING BREEZY CONDITIONS TO THE AREA THROUGH THE EVENING.
WEAK NORTHERLY WINDS WILL TURN EAST AND SOUTHEAST BY LATE THIS AFTERNOON AS HIGH PRESSURE MOVES EAST. SLIGHTLY WARMER ON MONDAY WITH HIGHS IN THE LOW TO MID 70S DUE TO WEAK SWLY LOW LVL FLOW AND WAA PATTERN.
SHOWERS OFFSHORE SOUTH AND WEST OF THE LOWER KEYS ARE BEGINNING TO DRIFT NORTH TO NORTHEAST.
520 AM CST SUN JAN 18 2015 LOW PRESSURE FROM THE PACIFIC STORM AFFECTING THE NW U. WILL MIGRATE INTO SASKATCHEWAN TODAY AND TONIGHT SETTING UP A WARM FRONT ACROSS THE DAKOTAS.
CLOSER TOWARD THE COAST LOWS WILL NEAR THE LOW/MID 40S WITH FROST NOT EXPECTED. WINDS AND SEAS RELAX TONIGHT AS HIGH PRESSURE BUILDS OVER THE WATERS FROM THE GULF COAST REGION. BREEZY WNW WINDS TODAY 15-20 MPH AND WARMER TEMPS WILL CREATE HIGH DISPERSIONS OF 75-90 UNITS TODAY INLAND WITH 70-75 TOWARD THE COAST.
LATEST OBSERVATIONS SHOW LOCALIZED POCKETS OF TEMPERATURES AT OR BELOW FREEZING. WILL INCLUDE A CHANCE OF FREEZING RAIN UNTIL MID-MORNING. CHATTANOOGA AIRPORT, TN 55 34 58 36 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 51 34 55 35 / 40 0 0 0 OAK RIDGE, TN 53 33 54 35 / 30 0 0 0 TRI CITIES AIRPORT, TN 47 29 50 32 / 70 10 0 0.
A DRY COLD FRONT WILL EXIT THE REGION THIS MORNING AS ANOTHER ROUND OF HIGH PRESSURE BUILDS IN FROM THE WEST. THE UPPER PATTERN WILL BECOME ZONAL AS THE SHORT WAVE TROUGH MOVES OFF THE ATLANTIC COAST.
648 AM EST SUN JAN 18 2015 A COLD FRONT WILL CROSS THE REGION TODAY. COLD FRONT CURRENTLY ALONG THE INDIANA/OHIO BORDER WILL MOVE EAST DURING THE DAY. WHICH MAY BE A LITTLE TOO SLOW IN BRINGING IN COLDER TEMPERATURES BEHIND THE COLD FRONT. HAVE GONE WITH ABOUT AN INCH OF SNOW ALONG INTERSTATE 80 AND TWO INCHES OF SNOW IN THE HIGHER ELEVATIONS OF WV/MD. WHILE OVERNIGHT TEMPERATURES WILL BE COOLER. HAVE KEPT CHANCE POPS IN THE RIDGES MONDAY MORNING.
AND INCREASE IN MAGNITUDE TO 10 TO 15 KTS AS HIGH PRESSURE SLIDES SOUTHEAST TOWARDS THE GULF COAST. /ISSUED 346 AM CST SUN JAN 18 2015/ AN UPPER LEVEL TROUGH CURRENTLY DEEPENING OVER THE EASTERN CONUS WILL PLACE NORTH TEXAS IN A NORTHWEST FLOW ALOFT REGIME FOR THE NEXT FEW DAYS. BROAD UPPER RIDGING AND SUBSIDENCE ON THE BACK SIDE OF THE TROUGH WILL BRING PLEASANT WEATHER FOR THE REST OF THE HOLIDAY WEEKEND. SURFACE WINDS HAVE BECOME LIGHT AND VARIABLE EARLY THIS MORNING AS A HIGH PRESSURE RIDGE BEHIND YESTERDAY/S COLD FRONT MOVES OVERHEAD. SOUTHWESTERLY WINDS CAN BE EXPECTED TODAY AS THE RIDGE SHUFFLES OFF TO THE SOUTHEAST. THIS IS IMPORTANT FOR OUR REGION BECAUSE THE TIGHTENING PRESSURE GRADIENT BETWEEN THE TROUGH TO THE NORTHWEST AND THE RIDGE TO THE SOUTHEAST WILL CREATE GUSTY SOUTHWEST WINDS OVER THE NORTHWEST COUNTIES LATER TODAY.
330 AM PST SUN JAN 18 2015 ABOVE NORMAL TEMPERATURES WILL CONTINUE TODAY DUE TO HIGH PRESSURE ALOFT AND OFFSHORE BREEZES.
OFFSHORE FLOW CONTINUES IN WAKE OF THE COLD FRONT THAT PASSED LAST NIGHT/EARLIER THIS MORNING.
A WEAK COLD FRONT IS PUSHING ITS WAY THROUGH DEEP SOUTH TX EARLY THIS MORNING WITH LIGHT W-NW WINDS BUILDING IN OVER THE REGION.
CHATTANOOGA AIRPORT, TN 55 34 58 36 / 10 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 51 34 55 35 / 40 0 0 0 OAK RIDGE, TN 53 33 54 35 / 30 0 0 0 TRI CITIES AIRPORT, TN 47 29 50 32 / 70 10 0 0.
A COLD FRONT WILL MOVE RAPIDLY EASTWARD ACROSS THE AREA THIS MORNING AS AN UPPER TROUGH MOVES TOWARD THE EAST COAST. HIGH PRESSURE WILL BUILD THROUGH THE DAY UNDER A NORTHWEST UPPER LEVEL FLOW. THE AIRMASS BEHIND THE FRONT IS DRIER BUT NOT SIGNIFICANTLY COOLER. HIGHS TODAY WILL AGAIN WARM INTO THE LOWER 60S IN MOST LOCATIONS WITH A FEW MID 60S POSSIBLE ACROSS THE SOUTHERN PART OF THE AREA. A DRIER AIRMASS AND CLEAR SKIES WILL ALLOW TEMPS TO FALL INTO THE LOW/MID 30S AWAY FROM THE COAST TONIGHT WITH LOW 40S NEAR THE COAST.
935 AM EST SUN JAN 18 2015 LOW PRESSURE WILL MOVE UP THE EAST COAST TODAY AND WILL CONTINUE NORTH THROUGH NEW ENGLAND TONIGHT.
TONIGHT-MON: DESPITE COLD FRONT GOING THROUGH ON SUN/SUN NIGHT. -HOWERTON A WEAK SFC TROF MOVG ESE WL CROSS CNTRL & ERN KS THIS AFTN & CAUSE SW WINDS 13-17KTS TO SHIFT TO THE W THEN NW OVER CNTRL KS ~18Z & SC KS 20Z-22Z. THE TROF SHOULD REACH KCNU ~19/00Z BY WHICH TIME WINDS WL HAVE DIMINISHED TO LESS THAN 10KTS.
/ISSUED 257 AM CST Sun Jan 18 2015/ Upper ridge building in from the west will continue recent mild wx period.
LOW AMPLITUDE RIDGE SLOWLY PHASING ACROSS FROM THE WEST WITH RATHER WARM DAYTIME HIGHS FOR LATE JANUARY. WE TWEAKED FIRST PERIOD TRENDS A LITTLE WARMER WITH LESS CLOUD COVER FOR MORNING HOURS. HIGH PRESSURE ALOFT WITH PATCHY CIRRUS LEVEL CLOUDS FILTERING IN FROM THE WEST.
UPPER-LEVEL TROUGH AND ASSOCIATED SURFACE COLD FRONT MOVING ACROSS THE REGION AT THIS TIME. BUT THE LEADING EDGE OF THE COOLER AND DRIER AIR IS STILL IN NORTH FLORIDA. SOME OF THE NEWER GUIDANCE IS COMING IN COLDER FOR TONIGHT WITH THE POTENTIAL FOR NEAR-FREEZING TEMPERATURES FOR INLAND AREAS OF THE NATURE COAST. A COLD FRONT WILL MOVE THROUGH THE AREA TURNING WINDS TO THE NORTHWEST AND INCREASING WINDS TO 10 TO 15 KNOTS FOR THIS AFTERNOON AND EVENING. HIGH PRESSURE WILL THEN BUILD INTO THE AREA FROM THE WEST TONIGHT THROUGH THE FIRST HALF OF THE WEEK VEERING WINDS AROUND TO THE NORTHEAST AND ALLOWING WIND SPEEDS TO SUBSIDE.
645 AM EST SUN JAN 18 2015 A WEAK COLD FRONT WILL CROSS THE AREA THIS MORNING.
BASED ON SFC TEMPS AND THE CORE OF THE COLDEST AIR IN THE LOWEST 8K IN THE ATMOSPHERIC COLUMN. WITH SOUTHERLY FLOW YIELDING HIGHS IN THE LOWER 60S/70S AHEAD OF AN APPROACHING TROUGH.
however the real story begins tonight as the cold front crosses the region.
1247 PM CDT FRI APR 10 2015 REMOVED THE MENTION OF THUNDERSTORMS FROM THE EASTERN PANHANDLES THIS AFTERNOON GIVEN THE COOLER/DRIER/MORE STABLE POST-FRONTAL AIRMASS IN PLACE. SOME SHOWERS/THUNDERSTORMS COULD ALSO DEVELOP WITH THE LOW-LEVEL JET LATE TONIGHT INTO SATURDAY MORNING. GULF MOISTURE RETURN WILL WORK INTO THE HIGH PLAINS AHEAD OF THESE WAVES.
A STRONG COLD FRONT WILL MOVE THROUGH WESTERN WASHINGTON THIS EVENING AND ACROSS THE CASCADES TONIGHT.
447 PM EDT FRI APR 10 2015 A LOW PRESSURE SYSTEM WILL CONTINUE TO MOVE ACROSS THE REGION THIS EVENING. LOW PRESSURE SYSTEM MOVING ACROSS REGION IS OCCLUDING AND WE WILL NOT REALLY GET INTO A WARM SECTOR. THE UPPER LEVEL TROUGH ASSOCIATED WITH THE SYSTEM WILL APPROACH TONIGHT WITH CHANCES FOR SOME SHOWERS ARE EXPECTED MAINLY ACROSS THE SOUTHERN ADIRONDACKS.
THIS HIGH WILL MOVE EAST TONIGHT WITH LIGHT WINDS AND SKIES WILL REMAIN CLEAR. LOWS WILL DROP OFF INTO THE LOWER 30S IN MANY AREAS. COLD FRONT TO MOVE THRU ERN ND SUN MORNING AND INTO NW/WCNTRL MN SUN MIDDAY-AFTN.
In this set-up, the surface thermal ridge and axis of highest dwpnts are near co-located. Overnight there is an indication that the arrival energy assocd shrtwv trof in the sw flow aloft and 40kt LLJ may renew the development of convection, especially s of I-20.
TOMORROW IS EXPECTED TO BE WARM AHEAD OF AN APPROACHING COLD FRONT. LATEST MODELS HAVE CONTINUED THE TREND WITH A LATER COLD FRONTAL PASSAGE.
/ISSUED 325 AM CDT Fri Apr 10 2015/ (Today and Tonight) Cooler temperatures and possible rain highlight the forecast for the next 24 hours. A cold front has pushed south of our Interstate 10 corridor, and cooler air has moved into West Central Texas. Highs today will be much cooler that the past couple days, with numbers likely ranging from around 70, north of the Interstate 20 corridor, to the mid 70s along the Interstate 10 corridor.
A TROUGH OF LOW PRESSURE PASSES BY TO THE SOUTH OF THE BORDER.
HIGH UPPER LEVEL TROUGH AXIS PASSES EAST OF THE AREA TONIGHT AS JET LEVEL WINDS WEAKEN AND VEER NORTHWESTERLY. HIGH MID-LEVEL HEIGHTS CONTINUE RISING SATURDAY MORNING AS RIDGING ALOFT PREVAILS. THIS WILL SUPPORT SURFACE RIDGING OVER THE CWA AS HIGH PRESSURE MIGRATES FROM EASTERN IOWA INTO CENTRAL ILLINOIS. WESTERLY WINDS SATURDAY MORNING WILL BACK SOUTHERLY BY EVENING AS UPSTREAM TROUGHING ADVANCES INTO THE CENTRAL PLAINS. READINGS WILL BE A BIT COOLER ALONG THE LAKESHORE.
TEMPERATURES DROPPED INTO THE LOWER 30S. WILL INCLUDE POPS FOR ISOLATED TO SCATTERED THUNDERSTORMS WITH THE HIGHEST POPS IN THE SOUTHEAST PART OF THE FORECAST AREA SOUTH OF I80.
WEAK MOISTURE/TERMPERATURE GRADIENTS ARE PRESENT AT A FEW LOCATIONS ACROSS THE CWA AND ANOTHER WEAK TROUGH/BOUNDARY IS APPARENT SOUTH OF HIDALGO COUNTY STRETCHING ACROSS NORTHEASTERN TAMAULIPAS FROM NORTH TO SOUTH. SURFACE MOISTURE IS NOT LACKING WITH DEWPOINTS IN CAMERON AND HIDALGO COUNTY IN THE MID 70S AND FURTHER INLAND IN THE LOWER 70S.
NW WINDS HAVE GUSTED OVER 35-40 MB ON THE BACKSIDE OF THE LOW PRESSURE SYSTEM DUE TO A TIGHT PRESSURE GRADIENT AND 6 HR ISALLOBARIC SFC PRESSURE RISES NEAR 10 MB.
324 PM CDT FRI APR 10 2015 SURFACE ANALYSIS AT MID-AFTERNOON SHOWED THE COLD FRONT HAD MADE IT TO AROUND INTERSTATE 20. AND DRIER AND SLIGHTLY COOLER CONDITIONS ARE FORECAST FOR SATURDAY AND SATURDAY NIGHT.
405 PM CDT FRI APR 10 2015 COLD FRONT. OVERNIGHT LOWS TONIGHT WILL DROP INTO THE LOW TO MID 60S. WHICH IS STILL ABOVE NORMAL DESPITE BEING SEVERAL DEGREES COOLER THAN LAST NIGHT.
A COLD FRONT WAS MOVING ACROSS MID TN THIS MORNING. SOMEWHAT GUSTY NW WINDS WILL DIMINISH THIS AFTERNOON AS A RIDGE APPROACHES. COLD FRONT LIKELY WON'T EXIT THE MID STATE UNTIL AFTER 12Z, WITH PRECIPITATION ENDING FROM WEST TO EAST DURING THE MORNING, PERHAPS SOME LINGERING SHOWERS ALONG THE CUMBERLAND PLATEAU INTO THE AFTERNOON. EXPECT DRY, COOLER WEATHER THIS WEEKEND AS HIGH PRESSURE MOVES ACROSS THE REGION.
301 PM CDT FRI APR 10 2015 HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE MIDSOUTH TONIGHT INTO SATURDAY. LIGHT NORTHERLY WINDS WILL USHER IN COOLER AIR INTO THE AREA. HIGHS ON SATURDAY WILL BE IN THE LOWER TO MID 70S. HIGH PRESSURE WILL SHIFT EAST.
A LOW PRESSURE SYSTEM WILL BRUSH NORTHERN NEVADA ON SATURDAY BRINGING A FEW SHOWERS TO AREAS NEAR THE IDAHO AND OREGONBORDER AND BREEZY CONDITIONS TO NORTHERN NEVADA.
308 PM EDT FRI APR 10 2015 A COLD FRONT WILL MOVE THROUGH THE REGION TONIGHT. HIGH PRESSURE WILL THEN BUILD EASTWARD AND INTO OUR REGION THROUGH THE WEEKEND.
COLD FRONT STRETCHES ACROSS NORTHWEST CENTRAL ALABAMA THIS MORNING. COLD FRONT WILL SLOWLY MOVE SOUTHEASTWARD THROUGH THE DAY. INCREASES IN INSTABILITY AHEAD OF THE COLD FRONT WILL DEPEND ON BREAKS IN THE CLOUD COVER. A COUPLE BANDS OF SHOWERS AND THUNDERSTORMS MOVING ACROSS CENTRAL ALABAMA AHEAD OF A COLD FRONT. THE ACTIVITY HAS BEEN LESS ORGANIZED THAN EXPECTED AS CLUSTERS OF SHOWERS AND THUNDERSTORMS HAVE DEVELOPED WELL AHEAD OF THE COLD FRONT. AT 3 AM THE COLD FRONT WAS LOCATED JUST EAST OF MEMPHIS. WITH THE LOW LEVEL INFLOW DECREASING AND VEERING.
LONG WAVE TROUGH CONTINUES TO PUSH THROUGH THE UPPER MS VALLEY WITH PRIMARY PV ANOMALY/SHORT WAVE DRIVING MUCH OF THE LARGER SCALE FORCING THROUGH THE GREAT LAKES AND INTO ONTARIO. WITH FORECAST SOUNDINGS AND RAW MODEL TEMP CONSENSUS SUPPORTING HIGHS CLOSER TO NAM RATHER THAN WARMER GFS MOS VALUES. WITH A FAIRLY QUIET TIME TO BEGIN THE PERIOD WITH HIGH PRESSURE OVERHEAD TONIGHT AND SHIFTING OFF TO THE SOUTHEAST SATURDAY. EXPECT COOLER CONDITIONS TONIGHT WITH COOLER AIRMASS STILL IN PLACE. RETURN FLOW SETS UP INTO SATURDAY WITH DRY CONDITIONS STILL EXPECTED AS THE HIGH PRESSURE AREA EXITS THE REGION.
A WEAK RIDGE OF HIGH PRESSURE WILL PROVIDE SUNNY SKIES AND ABOVE NORMAL TEMPS BEFORE A COLD FRONT APPROACHES THE TWO STATE AREA LATER TODAY. MEANWHILE AS THE COLD FRONT PASSES THROUGH THE REGION TOMORROW.
/ISSUED 1143 AM CDT FRI APR 10 2015/ THE COLD FRONT HAS EXITED THE REGION AS OF MID-MORNING. GENERALLY ALONG THE 850MB TROUGH. WITH THE 850MB TROUGH PROGGED TO DRIFT A LITTLE FARTHER S AS WELL. THIS SHOULD LIMIT ANY NWD EXPANSION OF THE CONVECTION CURRENTLY OVER SE TX SPREADING E TOWARDS THE LOWER SABINE RIVER. WE SHOULD SEE THE HIGH CLOUDS TO BEGIN TO THIN LATE IN THE DAY ACROSS THE NRN ZONES. SHOULD SEE A REFRESHING CHANGE IN THE LOWER TEMPS AND HUMIDITES THIS AFTERNOON.
850/700 MB THETA-E RIDGE AXIS ALSO ALONG INTERSTATE 25 THIS AFTERNOON. AND ON A WEEKEND AS WELL WITH BRISK WEST SOUTHWEST FLOW ALOFT AIDING IN PRODUCTION OF A SURFACE LEE TROUGH.
349 PM EDT FRI APR 10 2015 A WEAK TROF WILL BE MOVING ACROSS THE AREA EARLY TONIGHT AND THEN HIGH PRESSURE WILL BUILD IN LATE TONIGHT.
1219 PM CDT FRI APR 10 2015 FOR 18Z TAFS /ISSUED 1101 AM CDT FRI APR 10 2015/ CURRENT OBS SHOW TEMPS IN THE LOW/MID 60S ACROSS THE TN VALLEY WITH OVERCAST SKIES. ONLY A FEW SHOWERS LINGER IN NE AL AHEAD OF WHERE THE COLD FRONT IS DRAPED.
242 PM EDT FRI APR 10 2015 A WEAK DISTURBANCE WILL INCREASE SHOWER CHANCES TONIGHT BEFORE HIGH PRESSURE BRINGS DRY WEATHER FOR THE WEEKEND. GUSTY WINDS WILL CONTINUE EARLY THIS EVENING BEHIND A DEPARTING COLD FRONT. HIGH PRESSURE IS PROGGED TO BUILD IN UNDER AN UPPER TROUGH SATURDAY WITH DRY WEATHER EXPECTED.
LATEST MODEL GUIDANCE STILL SHOWS THE CHANCE FOR A FEW STRONG THUNDERSTORMS FORMING OUT AHEAD AND ALONG A COLD FRONT MOVING SOUTH TOWARDS THE COAST THIS AFTERNOON. THE NEWER GUIDANCE ALSO DEPICTS SOME DRYNESS IN THE LOWER TO MID LEVELS SUPPORTING THE POSSIBILITY OF FEW STRONG DOWNBURSTS OR OUTFLOWS WITH THE STRONGER THUNDERSTORMS LATER TODAY. LOWER CEILINGS WILL BE MOSTLY IN AND AROUND NUMEROUS SHOWERS AND THUNDERSTORMS MOVING EASTWARD ACROSS THE REGION THIS AFTERNOON FORMING AHEAD OF A WEAK COLD FRONT APPROACHING FROM THE NORTHWEST. A WEAK COLD FRONT IS STILL PROGGED TO MVOE OFF THE COAST OVER THE MARINE AREA LATE TONIGHT AND EARLY SAT MORNING.