Aikyam-Lab/Synoptic-Bench huggingface dataset:
1201 PM CST SUN FEB 15 2015 THE DRY ARCTIC AIR RULES WITH A LARGE AREA OF VERY DRY AIR IN THE LOW LEVELS IS KEEPING THE SNOW SEEN ON RADAR FROM REACHING THE GROUND WITH MALF BASES TO 040.
MUCH OF THE INITIAL ISENTROPIC LIFT TODAY WILL GO TOWARD MOISTENING THE LOW-MID LEVELS IN THE SOUTHEAST. THERE COULD BE SOME BRIEF LIGHT FREEZING RAIN CLOSER TO THE OKLAHOMA BORDER.
HAVE LOWERED THE LOWS FOR TONIGHT A LITTLE. HAVE KEPT TEMPERATURES A BIT COOLER. NORTHWESTERLY FLOW WILL BE IN PLACE ALOFT TO BEGIN THE EXTENDED PERIODS AS A RIDGE OF HIGH PRESSURE AMPLIFIES ACROSS THE WEST COAST. THIS RIDGE IS FORECAST TO WEAKEN SOME AS IT RETROGRADES LATE IN THE WEEK.
GUSTY NORTHWEST WINDS WILL GRADUALLY DECREASE OVER THE COURSE OF THE DAY AS HIGH PRESSURE CONTINUES TO BUILD IN ACROSS THE REGION AND THE SURFACE PRESSURE GRADIENT RELAXES. THE WARNING REMAINS IN EFFECT ACROSS THE I80 CORRIDOR AND ALONG THE RIDGES. CONFIDENCE IN THE SCENARIO IS MINIMAL AT MOMENT AS GFS AND ECMWF HAVE VARIED IN DEPICTIONS OF THE LOW PRESSURE TRACK OVER THE PAST SEVERAL DAYS.
WITH THE WESTERN PORTIONS OF THE LOWER KEYS SEEING SOME CUMULUS AROUND 3 KFT.
1126 AM CST SUN FEB 15 2015 UPDATED TO CANCEL WINDCHILL ADVISORY WARMER TEMPERATURES AND DIMINISHING WINDS WILL CRERATE WINDCHILLS ABOVE ZERO FOR THE REMAINDER OF THE DAY OVER NORTHWEST TENNESSEE. COUPLED WITH WINDS IN THE 10 TO 15 KT RANGE AND TEMPERATURES IN THE LOW TO MID TEENS SHOULD KEEP WINDCHILLS ACROSS NORTHWEST TENNESSEE NEAR ZERO THROUGH NOON TODAY. WITH MUCH COLDER THAN NORMAL TEMPERATURES PREVAILING TODAY/S 00Z MODEL GUIDANCE SHOWED A NORTHWARD SHIFT IN THE LOW LEVEL FEATURES EARLY MONDAY. THIS COULD LIMIT FREEZING RAIN AND SLEET ACCUMULATION FOR THE AREAS TO THE SOUTH OF OXFORD AND TUPELO. AS SLEET AND FREEZING POTENTIAL INCREASES. A DEEP LONGWAVE TROF WILL REMAIN ANCHORED OVER SOUTHEAST CANADA.
A LOW CLOUD DECK SHOULD DEVELOP BY LATE THIS EVENING AND OVERNIGHT /ESPECIALLY ACROSS EASTERN AREAS/ AS A 35 TO 45 KT LLJ AT 925MB DEVELOPS IN RESPONSE TO A DEVELOPING AREA OF LOW PRESSURE ACROSS NORTH CENTRAL TEXAS. MAJOR CHANGES TO AREA WEATHER WILL OCCUR DURING THE DAY MONDAY AS A POWERFUL ARCTIC COLD FRONT BLASTS SOUTH ACROSS THE CWA. HAVE MAINTAINED 20 POPS FOR A SHOWER OR TWO MON NIGHT AS CWA IS PROG TO BE IN THE RRQ OF AN IMPRESSIVE /BY S TX STANDARDS/ 130 KT H25 JET STREAK WITH AN APPROACHING H5 S/W TROUGH.
POINT FORECAST SOUNDINGS AND MODEL CROSS-SECTION ANALYSIS STILL SUGGEST A PERIOD OF SLEET AND/OR FREEZING RAIN IS POSSIBLE. WITH 3 TO 5 INCH AMOUNTS ACROSS SOUTHEAST KANSAS WITH THE HIGHER AMOUNTS NEAR THE MISSOURI AND OKLAHOMA BORDERS.
112 PM PST Sun Feb 15 2015 Dry weather with above normal temperatures will continue through this week under high pressure ridging. High pressure ridge will continue to become stronger over the region through Monday. A weak circulation dropping south over the ridge is bring some high clouds over the area today. Weak disturbances moving south over the top of the ridge the next couple of days may continue to bring some high clouds to the area.
CONSISTENTLY WARMER MODELS RUNS ARE PUTTING OUR EXPECTED WINTER WEATHER EVENT IN JEOPARDY. THE NAM/SREF AND OTHERS ARE NOW IN AGREEMENT THAT A WARMER SOLUTION WILL OCCUR. SOME SLEET AND FREEZING RAIN LOOK PROBABLE OVER FAR NORTHERN BOLIVAR COUNTY AND THE FREZING RAIN SHOULD CONTINUE THROUGH MOST OF THE DAY MONDAY. TO THE SOUTH ALONG THE HIGHWAY 82 CORRIDOR. AS THE LOW PULLS TO THE EAST DURING THE AFTERNOON. EXPECT A CHANGE BACK OVER TO FREEZING RAIN OVER THE DELTA DURING THE AFTERNOON WHERE SOME LIGHT ICING WILL OCCUR. LOWER 60S DEWPOINTS LOOK TO POOL ALONG THE LOWS ATTENDANT COLD FRONT AS IT MOVES ACROSS SOUTH MS IN THE AFTERNOON. THERE WILL ALSO BE STRONG WINDS IN THE LOWER 10KFT OF THE ATMS TO SUPPORT STRONG WIND SHEAR.
THU MORNING WILL LIKELY BE COLDER THAN WED MORNING AS HIGH PRESSURE MOVES IN. THE LOWER LEVELS /BELOW ABOUT 850MB/ REMAIN QUITE DRY THRU TONIGHT AND INTO MON MORNING. EVEN WITH APPROACH OF THE SFC-850MB TROUGH/FRONT.
ARCTIC HIGH PRESSURE WAS HOLDING FIRM ACROSS EASTERN MN AND WI EARLY THIS MORNING. LITTLE CHANGE TO THE HIGHS TODAY WITH SINGLE DIGITS IN THE EAST TO THE TEENS WEST CENTRAL AND SOUTHWEST. LOWS MONDAY MORNING WILL BE A LITTLE WARMER THAN THIS MORNING AS SOUTHERLY LOW LEVEL FLOW PREVAILS AHEAD OF AN INCOMING TROUGH. READINGS RANGE FROM AROUND ZERO FROM EAU CLAIRE AND LADYSMITH TO THE HIGH SINGLE DIGITS ACROSS THE WEST CENTRAL. OVER THE NEXT COUPLE OF DAYS THE UPPER LEVEL PATTERN WILL AMPLIFY AS THE RIDGE BUILDS ACROSS THE WEST COAST. THIS WILL RESULT IN DOWNSTREAM TROUGHING.
This trough will drive a cold front through the area later today. Also have a cut off low over Baja that is moving east toward the area and may just skirt the area as the trough pushes it south. The unusually warm wx will be coming to an end shortly as a cold front approaches the area. Models want to lift the front a little tomorrow across the western CWA with a south wind briefly returning but another surge tomorrow night will shove the front up against the higher elevations. Increasing clouds behind the front should help to hold overnight temps above freezing for most of the region.
824 AM PST Sun Feb 15 2015 Dry weather with above normal temperatures will continue through this week under high pressure ridging. High pressure ridge will continue to become stronger over the region through Monday. The ridge of high pressure will remain in place with dry and warmer than normal temperatures through the period.
MODEL SOLUTIONS HAVE TRENDED WARMER OVER THE LAST SEVERAL RUNS. AS THE TRACK OF THE SFC TROF HAS CONTINUED TO TREND FURTHER N. IT NOW LOOKS AS THOUGH THE FREEZING LINE AT THE SFC WILL DO WELL TO MAKE IT INTO OUR CWA AT ALL PRIOR TO THE PRECIP MOVING OUT. HAVE CONTINUED MENTION OF FREEZING RAIN/SLEET ACROSS OUR EXTREME NRN COUNTIES OF SE OK/SW AR. PARTICULARLY WITH BRIDGES AND OVERPASSES. WITH THE MORE NWD/WARMER TREND.
AT TYS PRECIP WOULD PROBABLY START AS SOME -SN AND THEN MIX AROUND MID DAY WITH SOME SLEET WHILE CHA MAY START AS SOME -SN AND PL BUT TRANSITION INTO FREEZING RAIN LATE MORNING BEFORE CHANGING INTO RAIN BY THE END OF THE FORECAST PERIOD.
1256 PM EST SUN FEB 15 2015 HIGH PRESSURE WILL BUILD ACROSS THE GREAT LAKES INTO MONDAY.
1156 AM CST SUN FEB 15 2015 COLD FRONT HAS MOVED OVER THE SOUTHWESTERN TEXAS PANHANDLE THIS MORNING. RANGING FROM THE LOWER TO MID 30S IN THE OKLAHOMA PANHANDLE TO AROUND 50 IN THE SOUTHWEST TEXAS PANHANDLE. /ISSUED 526 AM CST SUN FEB 15 2015/ A COLD FRONT WILL SLOWLY FINISH PUSHING THRU SRN TX PNHDL EARLY THIS MORNING. WITH MUCH COOLER TEMPERATURES IN ITS WAKE. FEATURING AN UPPER LEVEL RIDGE ALONG THE W COAST AND A DEEP UPPER LEVEL TROF OVER THE ERN HALF OF THE U.
A cold front is expected to push south overnight and approach the northern terminal, KHOB, by 05z Monday and exit the southern terminal, KFST, by 11z Monday. a strong cold front will affect all terminals by 16/12Z, beginning with KHOB by 16/06Z. Have kept this lower deck VFR for now, but this may have to be changed in subsequent forecasts. A strong cold front currently stretched across Oklahoma will take its time moving south today, reaching our area tonight.
THE REGION BEGINS TO FEEL THE EFFECTS OF THE APPROACHING COLD FRONT.
IF THIS CONTINUES TO PROGRESS TO THE EAST-SE THINK THAT AREAS ESPECIALLY ALONG AND NORTH OF THE HIGHWAY 2 CORRIDOR COULD SEE A FEW HOURS OF LATE MORNING OR AFTERNOON SUN.
DRY AND A FEW DEGREES COOLER TODAY IN THE NW FLOW. COOLER AIR IS MOVING INTO THE REGION BEHIND YDAY/S COLD FRONT.
353 PM EST SUN FEB 15 2015 HIGH PRESSURE WILL BUILD ACROSS THE GREAT LAKES INTO MONDAY.
THIS CONTINUES TO GIVE THE COOLEST HIGHS IN THE EAST AND A BIT WARMER TO THE WEST.
237 PM MST SUN FEB 15 2015 CONSIDERABLE CLOUDINESS WILL SPREAD ACROSS SOUTHERN ARIZONA TODAY AS A DEVELOPING LOW PRESSURE SYSTEM OVER BAJA CALIFORNIA MOVES EAST ACROSS NORTHWEST MEXICO.
Temperatures were dropped as it may remain cooler than expected with increased cloud cover.
1209 PM CST SUN FEB 15 2015 HAVE MADE SOME ADJUSTMENTS TO THE HIGH TEMPERATURES TODAY AS WARM FRONT IS MOVING INTO SOUTHERN OKLAHOMA AND NORTH TEXAS LATE THIS MORNING. THE CURRENT TIMING OF THERMODYNAMIC EVOLUTION ALSO SUGGESTS A MULTI-HOUR FREEZING RAIN EVENT ACROSS THE AREA TONIGHT. WITH RAIN CHANGING TO FREEZING RAIN AND SLEET THIS EVENING AND OVERNIGHT. HOWEVER THE MODELS ARE ALSO SLIGHTLY WARMER AT THE SURFACE. THIS WOULD LIMIT FREEZING RAIN POTENTIAL BOTH IN THE WATCH AREA AND FROM PREV FORECAST ACROSS LOCATIONS FARTHER NORTH. WILL START WITH PARTS OF CENTRAL AND NORTHERN OKLAHOMA THIS EVENING AS A MIX OF FREEZING RAIN/SLEET/SNOW DEVELOP. MEANWHILE FARTHER SOUTH WILL START THE ADVISORY AT MIDNIGHT AS SFC TEMPS SLOWLY COOL TO NEAR/BELOW FREEZING. FAR SOUTHEAST OKLAHOMA LOOKS LIKE THEY MAY STAY AT OR JUST SLIGHTLY ABOVE FREEZING.
Western Montana and north central Idaho will remain sandwiched between high pressure along the west coast and low pressure in central Montana tonight into Monday. This feature will help to enhance snow showers tonight into early tomorrow morning, which will likely bring light snow accumulations to the higher terrain and mountain passes along the Divide, such as Marias, MacDonald and Homestake. Snow along the Divide is expected to generally decrease during the day Monday, although light periods of snow may persist in the higher terrain. The rest of western Montana and north central Idaho will be more influenced by the ridge of high pressure to the west. Other than cooler temperatures and some increased cloud cover, impacts from this system will be fairly minimal.
SUBFREEZING TEMPERATURES IN THE MORNING WILL KEEP ICY ROADS AN ISSUE THROUGH THE MORNING RUSH AND INTO THE MID-LATE MORNING HOURS.
A SHALLOW COLD FRONT THAT MOVE THROUGH MOST OF OUR TAF SITES. THE COLD FRONT WILL BEGIN TO MOVE BACK NORTH AS A WARM FRONT. OVER PARTS OF SOUTHEAST OKLAHOMA AND SOUTHWEST ARKANSAS THERE WILL BE RAIN MIXED WITH FREEZING RAIN JUST NORTH OF THE TERMINAL FORECAST SITES OF KELD AND KTXK. /ISSUED 1058 AM CST SUN FEB 15 2015/ COLD FRONT THAT BACK-DOORED INTO THE REGION OVERNIGHT HAS NOW BECOME QUASI-STATIONARY ALONG A LINE FROM JUST W OF TERRELL.
438 PM EST SUN FEB 15 2015 HIGH PRESSURE WILL SLIDE TO THE EAST MONDAY.
941 AM PST SUN FEB 15 2015 WEAKENING HIGH PRESSURE ALOFT WILL ALLOW SLOW COOLING OVER THE REGION.
141 PM PST SUN FEB 15 2015 WEAKENING HIGH PRESSURE ALOFT WILL ALLOW SLOW COOLING OVER THE REGION.
THIS WILL RESULT IN WARMER TEMPERATURES AS SOUTHERLY LOW LEVEL FLOW CONTINUES.
THIS AREA WAS ASSOCIATED WITH A MID LEVEL SHORT WAVE TROUGH AND MOISTURE CONVERGENCE. THIS AREA IS MOVING SLIGHTLY AHEAD OF THE HIGHEST VALUES. EXPECT SHOWERS AND STORMS WILL CONTINUE TO MOVE ACROSS THE AREA THIS AFTERNOON AND EVENING AHEAD OF THE APPROACHING TROUGH. EXPECT FOG FORMATION WILL BE POSSIBLE TONIGHT WITH DEWPOINTS IN THE LOW TO MID 60S. RAIN CHANCES WILL BEGIN TO DECREASE ON TUESDAY AS UPPER LEVEL HEIGHTS BEGIN TO INCREASE AS AN UPPER LEVEL RIDGE BECOMES ESTABLISHED ACROSS THE NORTHERN GULF COAST. A FEW SHOWERS AND STORMS WILL BE POSSIBLE ACROSS NORTHEASTERN PORTIONS OF CENTRAL ALABAMA ALONG THE PERIPHERY OF THE RIDGE.
1048 PM CDT MON APR 6 2015 EXTENSIVE CLOUDINESS WILL PREVAIL ACROSS THE FORECAST AREA DURING THE SHORT TERM ALONG WITH A BRISK EASTERLY WIND DUE TO THE REGION BEING SANDWICHED BETWEEN HIGH PRESSURE OVER ONTARIO AND LOW PRESSURE SITUATED IN THE CENTRAL PLAINS.
A WEAK TROUGH OF LOW PRESSURE OVER THE EASTERN PORTION OF THE FLORIDA STRAITS WILL PASS WESTWARD THROUGH THE FLORIDA KEYS OVERNIGHT. THE ANTICIPATED INCREASE IN ATMOSPHERIC MOISTURE COUPLED WITH THE PRESENCE OF A WEAK TROUGH OF LOW PRESSURE IN THE VICINITY OF THE FLORIDA KEYS SHOULD RESULT IN THE HIGHEST RAIN CHANCES OF THE WEEK OVERNIGHT.
747 PM EDT MON APR 6 2015 AN UNSETTLED WEATHER PATTERN WILL BEGIN TONIGHT AS AREAS OF LOW PRESSURE INTERACT WITH A STALLED FRONTAL BOUNDARY.
THIS AREA WAS ASSOCIATED WITH A MID LEVEL SHORT WAVE TROUGH AND MOISTURE CONVERGENCE. THIS AREA IS MOVING SLIGHTLY AHEAD OF THE HIGHEST VALUES.
LOCATIONS NEAR THE WATER WILL LIKELY STAY IN THE LOWER 70S OVERNIGHT. HIGH PRESSURE IN THE WESTERN ATLANTIC WILL GENERALLY KEEP AN EASTERLY WIND FLOW IN PLACE ACROSS THE AREA EXCEPT NEAR THE COAST IN THE AFTERNOON WHERE WINDS WILL TURN ONSHORE WITH AN AFTERNOON SEA BREEZE.
916 PM EDT MON APR 6 2015 HIGH PRESSURE TO OUR EAST WILL MAINTAIN SUFFICIENT ATMOSPHERIC MOISTURE OVER OUR REGION THROUGH MUCH OF THIS WEEK.
/ISSUED 326 PM CDT MON APR 6 2015/ THE WEATHER MAP SHOWS HIGH PRESSURE LOCATED ACROSS THE SOUTHEAST U. WITH A LOW PRESSURE SYSTEM EAST OF THE ROCKIES. THE SOUTHERLY FLOW BETWEEN THESE TWO SYSTEMS FORCE A WARM FRONT TO SURGE NORTHWARD ACROSS THE FORECAST AREA EARLIER TODAY. THIS WARM FRONT IS NOW WELL NORTH OF THE FORECAST AREA LEAVING A RATHER WARM AND HUMID AIR MASS IN PLACE. THE WARM AND MUGGY CONDITIONS LOOK TO PREVAIL OVER THE NEXT FEW DAYS WITH HIGH PRESSURE REMAINING EAST OF THE REGION AND A SERIES OF LOW PRESSURE SYSTEMS DEVELOPING EAST OF THE ROCKIES AND OVER THE PLAINS. JUST ENOUGH OF WEAK RIDGING IN THE MID LEVELS TO KEEP ANY MENTION OF SHOWERS OUT OF THE FORECAST.
/ISSUED 326 PM CDT MON APR 6 2015/ WATER VAPOR IMAGERY SHOWS A TRAILING SHORT WAVE TROUGH AXIS RESPONSIBLE FOR A LINE OF WEAK SHOWERS ON RADAR. SFC ANALYSIS SHOWS LOW PRESSURE FORMING IN THE HIGH PLAINS WITH THE WARM FRONT WELL NORTH INTO THE PLAINS. THIS MEANS WARM HUMID CONDITIONS WITH LOW TEMPS NEAR 70 AND HIGH TEMPS IN THE LOW 80S. IT WILL NOT QUITE FEEL LIKE DOG BREATH AS THE BREEZE OFF THE GULF WILL FEEL SOMEWHAT COOL DUE TO THE COOLER SHELF WATERS. UPPER LEVEL LOW NOW LOCATED OVER THE PAC NW WILL MOVE ACROSS THE ROCKIES AND INTO THE PLAINS WED NIGHT INTO THUR.
MILD LOWS IN THE LOWER/MID 60S WILL PREVAIL. CONFIDENCE IS MORE IN THE LOW RANGE WITH CIGS AND VSBY LEVELS DUE TO DISCREPANCIES BETWEEN LAV GUIDANCE.
1042 PM EDT MON APR 6 2015 HIGH PRESSURE TO OUR EAST WILL MAINTAIN SUFFICIENT ATMOSPHERIC MOISTURE OVER OUR REGION THROUGH MUCH OF THIS WEEK.
641 PM CDT Mon Apr 6 2015 A quasi stationary front remains over northern Illinois, while a warm frontal boundary over the central Plains slowly pushes northeastward. The warm, moist air associated with the low level southerly flow will push into south central and southeast Illinois, increasing in the early morning as the warm front over the central Plains moves into southern Illinois.
AIRMASS CONTINUES WITH A SLOW MOISTENING OF THE LOWER LEVELS AND LOWERING OF CLOUD BASES ALONG THE I-94 AND HWY 10 CORRIDOR. AHEAD OF DEEPENING LOW PRESSURE IN EASTERN MT.
GUSTY SOUTHWEST WINDS WILL RESUME AGAIN ON TUESDAY AS A COLD FRONT MOVES TOWARD ARIZONA.
633 PM CDT MON APR 6 2015 EXTENSIVE CLOUDINESS WILL PREVAIL ACROSS THE FORECAST AREA DURING THE SHORT TERM ALONG WITH A BRISK EASTERLY WIND DUE TO THE REGION BEING SANDWICHED BETWEEN HIGH PRESSURE OVER ONTARIO AND LOW PRESSURE SITUATED IN THE CENTRAL PLAINS.
A COLD FRONT ACROSS CENTRAL UTAH WILL CONTINUE A SLOW DRIFT SOUTHWARD OVERNIGHT.
1044 PM CDT MON APR 6 2015 06Z TAF CYCLE A COLD FRONT IS EXPECTED TO MOVE TO NEAR THE OKLAHOMA PANHANDLE AND NORTHEAST TEXAS PANHANDLE BY 12Z TUESDAY.
FOR 06Z AVIATION FORECAST 500 MBAR TROUGH SHOWING UP GOOD IN THERMAL PATTERN FROM CHICAGO DOWN INTO BOOTHEEL OF MISSOURI WITH A FEW THUNDERSTORMS FAR SOUTHERN ILLINOIS AND SCATTERED SHOWERS WESTERN KENTUCKY DOWN INTO NORTHERN MIDDLE TENNESSEE.
WITH THE WARMER READINGS STAYING SOUTH OF PITTSBURGH AS THE NORTHERN STATIONARY BOUNDARY SLOWLY PUSHES SOUTH AS A WEAK COLD FRONT. MORE AMPLIFIED FLOW IS INDICATED FOR LATE WEEK AS THE WESTERN STATES UPPER TROUGH PROGRESSES EASTWARD. LIKELY POPS WERE THUS MAINTAINED UNTIL COOL HIGH PRESSURE UNDER THE PASSING UPPER TROUGH DRIES THE WEEKEND. A MEANDERING FRONTAL BOUNDARY WILL CONTINUE TO LINGER OVER THE LOWER GREAT LAKES AREA THROUGH THE PERIOD WITH SEVERAL WAVES OF SHOWERS AND EMBEDDED ISOLATED THUNDER RUNNING DOWN IT THROUGH THE NEXT 24 HOURS.
829 PM EDT MON APR 6 2015 HIGH PRESSURE TO OUR EAST WILL MAINTAIN SUFFICIENT ATMOSPHERIC MOISTURE OVER OUR REGION THROUGH MUCH OF THIS WEEK.
LARGE VARIATIONS ALSO EXIST WITH WESTERN US UPPER FLOW WHICH TRANSLATES DOWNSTREAM INTO THE AMOUNT OF LEE TROUGH CYCLOGENSIS. IFR/LIFR CIGS MAY ALSO DEVELOP NORTH OF A SLOW MOVING COLD FRONT THAT WILL BECOME STATIONARY ACROSS CENTRAL KANSAS TONIGHT. AHEAD OF COLD FRONT ON WED.
1136 PM CDT MON APR 6 2015 WIDESPREAD CLOUD COVER HAS OVERTAKEN THE AREA AND WILL REMAIN IN PLACE THROUGH THE PERIOD AS A PARKED LOW PRESSURE SYSTEM OVER THE CENTRAL PLAINS SUPPLIES OUR AREA WITH A STREAM OF LOW LEVEL MOISTURE AND WARM AIR ADVECTION. FROM ST CLOUD NORTH TOWARD LONG PRAIRIE WHERE A FREEZING RAIN ADVISORY REMAINS IN EFFECT FOR TONIGHT. THE 700MB LAYER LOOKS TO RAPIDLY DRY OUT TONIGHT WITH SOUTHWEST FLOW OVERRUNNING THE LOW LEVEL MOISTURE. TEMPERATURES IN THIS PERIOD WILL REMAIN COOLER THAN NORMAL WITH THE LOW OVERCAST SKIES.
AXIS OF HIGH PRESSURE RIDGE WILL EXTEND FROM THE NORTHERN GULF OF MEXICO ACROSS THE NORTHERN PENINSULA INTO THE ATLANTIC.
MORE AMPLIFIED FLOW IS INDICATED FOR LATE WEEK AS THE WESTERN STATES UPPER TROUGH PROGRESSES EASTWARD. LIKELY POPS WERE THUS MAINTAINED UNTIL COOL HIGH PRESSURE UNDER THE PASSING UPPER TROUGH DRIES THE WEEKEND. A MEANDERING FRONTAL BOUNDARY WILL CONTINUE TO LINGER OVER THE LOWER GREAT LAKES AREA THROUGH THE PERIOD WITH SEVERAL WAVES OF SHOWERS AND EMBEDDED ISOLATED THUNDER RUNNING DOWN IT THROUGH THE NEXT 24 HOURS.
747 PM EDT MON APR 6 2015 HIGH PRESSURE TO OUR EAST WILL MAINTAIN SUFFICIENT ATMOSPHERIC MOISTURE OVER OUR REGION THROUGH MUCH OF THIS WEEK.
SHORT WAVE RIDGE BRINGING MOSTLY CLEAR SKIES THIS EVENING. MAIN UPPER LOW ALONG OREGON COAST WILL MOVE INLAND WITH PCPN REACHING SRN HARNEY AND MALHEUR COUNTIES TUESDAY AFTERNOON.
610 AM EST THU FEB 26 2015 LOW PRESSURE WILL TRACK WELL TO OUR SOUTH LATER TODAY AND TONIGHT.
938 AM EST THU FEB 26 2015 LOW PRESSURE WILL MOVE OFF THE CAROLINA COAST AND THE JET STREAM FAVORS BROAD BUT WEAK LIFT OVER THE STATE TODAY BRINGING PERIODS OF VERY LIGHT SNOW AND FLURRIES. AN UPPER LEVEL TROUGH WILL CROSS THE STATE TONIGHT AND EARLY ON FRIDAY. A LARGE AREA OF HIGH PRESSURE WILL BUILD ACROSS THE AREA FOR THE FIRST PART OF THE WEEKEND. AN INVERTED TROUGH WITH LLVL NERLY FLOW WILL MAINTAIN A SHIELD OF THICK MAINLY MID LEVEL CLOUDS AND INTERMITTENT VERY LIGHT SNOW WITH NOTHING MORE THAN A DUSTING TODAY. HIGH TEMPS THIS AFTERNOON WILL REACH THE LOWER TO MID TEENS ACROSS THE NORTHERN MTNS OF PENN. THE UPPER TROUGH AXIS MOVES OVERHEAD LATE TONIGHT AND FRIDAY MORNING. HIGH PRESSURE BUILDING INTO THE REGION DRIES THINGS OUT FOR EARLY WEEKEND.
1004 AM EST THU FEB 26 2015 A WEAK AREA OF LOW PRESSURE WILL MOVE EAST ACROSS THE OHIO VALLEY TODAY.
646 AM EST THU FEB 26 2015 VERY LIGHT SNOW IS POSSIBLE OVER THE REGION TODAY AS LOW PRESSURE MOVES OFF THE CAROLINA COAST AND THE UPPER JET STREAM FAVORS BROAD BUT WEAK LIFT OVER THE STATE. THE UPPER LOW WILL CROSS THE STATE EARLY ON FRIDAY. A LARGE AREA OF HIGH PRESSURE WILL BUILD ACROSS THE AREA FOR THE FIRST PART OF THE WEEKEND. THE WEAKNESS IN THE LIFT AND PERSISTENT NORTHERLY FLOW TODAY WILL KEEP THE LOW LEVELS VERY DRY IN THE CENTRAL AND NERN PARTS OF THE CWA. THE LOW ZIPS AWAY AND ANY SNOW IN THE SE SHOULD MOVE AWAY/STOP BEFORE NOON. THE UPPER TROUGH AXIS MOVES OVERHEAD LATE TONIGHT AND FRIDAY MORNING. HIGH PRESSURE BUILDING INTO THE REGION DRIES THINGS OUT FOR EARLY WEEKEND.
605 AM EST THU FEB 26 2015 LOW PRESSURE WILL MOVE UP THE ATLANTIC COAST TODAY. COLD AND DRY HIGH PRESSURE WILL BUILD INTO THE AREA FOR THE WEEKEND. WITH TEMPERATURES ABOVE FREEZING NOW. THEN SLIGHTLY WARMER ON FRIDAY AS TEMP RANGE FROM THE MIDDLE 40S NORTH TO THE MIDDLE 50S SOUTH.
AN UPPER TROUGH CURRENTLY DROPPING SOUTH THROUGH THE QUEEN CHARLOTTE ISLANDS OF B. THE WEEKEND WILL LIKELY BE DRY FOR THE MOST PART AS A WEAK RIDGE BUILDS IN. EXPECT SOME LIGHT RAIN TO ALSO ACCOMPANY THE LOWERING CIGS. FREEZING LEVELS WILL BE AROUND 5500-6000 FT MSL.
THANKS TO SOUTH/SOUTHWEST WINDS ACCELERATING INTO AN INTENSIFYING LOW PRESSURE SYSTEM OFF THE SOUTH CAROLINA COAST. WITH CURRENT DEWPOINT TEMPERATURES IN THE LOWER 70S. A WEAK COLD FRONT TRAILS THE DEVELOPING LOW. A PERIOD OF LOW STRATUS AND PATCHY FOG IS POSSIBLE THIS EVENING AS THE COOLER AIR FIRST ARRIVES. AN INTENSIFYING LOW PRESSURE SYSTEM CENTERED NEAR COASTAL GEORGIA THIS MORNING. A COLD FRONT TRAILING THIS SYSTEM WILL MOVE SOUTHWARD.
PRESSURE RISES AHEAD OF AN ARCTIC HIGH PRESSURE SYSTEM BUILDING SOUTH TOWARDS THE NORTHERN PLAINS CONTINUES TO GENERATE A STEADY NORTHERLY WIND. ARCTIC HIGH PRESSURE BUILDS SOUTH-SOUTHEAST ACROSS THE DAKOTAS TODAY THROUGH TONIGHT. THE 00 UTC DETERMINISTIC AND ENSEMBLE SUITES MAINTAIN THE NORTHERN PLAINS UNDER CYCLONIC NORTHWEST FLOW ALOFT THROUGHOUT THE ENTIRE PERIOD IN ASSOCIATION WITH A LONG WAVE TROUGH ACROSS THE CONUS. VFR CONDITIONS UNDER STRONG HIGH PRESSURE THROUGH THE 06Z PERIOD.
608 AM EST THU FEB 26 2015 A WEAK AREA OF LOW PRESSURE WILL MOVE EAST ACROSS THE OHIO VALLEY TODAY.
SOME AREAS OF DENSE FOG HAVE FORMED ACROSS SOME OF THE COUNTIES SOUTH OF MEMPHIS NEAR THE MISSISSIPPI RIVER SO WILL ISSUE A FREEZING FOG ADVISORY FOR THESE AREAS UNTIL 9 AM CST. A COLD FRONT CURRENTLY EXTENDS FROM SOUTHEAST MISSOURI THROUGH SOUTHWEST ARKANSAS AND INTO NORTHEAST TEXAS. AS THIS COLD FRONT MOVES THROUGH THE FORECAST AREA THERE COULD BE SOME SNOW FLURRIES THAT DEVELOP. HIGH PRESSURE WILL BUILD INTO THE REGION TONIGHT BRINGING CLEAR SKIES WHICH WILL ALLOW TEMPERATURES TO GET QUITE COLD WITH LOWS FRIDAY MORNING FROM THE UPPER TEENS TO LOWER 20S. DRY AND COLD WEATHER WILL CONTINUE INTO FRIDAY AND FRIDAY NIGHT AS HIGH PRESSURE REMAINS OVER THE REGION.
GIVEN THAT SURFACE TEMPERATURES REMAIN ABOVE FREEZING AT THIS WRITING.
NO CHANGES OTHER THAN TO BLEND TO OBSERVED TRENDS THROUGH 12 UTC WITH ARCTIC HIGH PRESSURE IN PLACE ACROSS THE NORTHERN PLAINS. PRESSURE RISES AHEAD OF AN ARCTIC HIGH PRESSURE SYSTEM BUILDING SOUTH TOWARDS THE NORTHERN PLAINS CONTINUES TO GENERATE A STEADY NORTHERLY WIND. ARCTIC HIGH PRESSURE BUILDS SOUTH-SOUTHEAST ACROSS THE DAKOTAS TODAY THROUGH TONIGHT. THE 00 UTC DETERMINISTIC AND ENSEMBLE SUITES MAINTAIN THE NORTHERN PLAINS UNDER CYCLONIC NORTHWEST FLOW ALOFT THROUGHOUT THE ENTIRE PERIOD IN ASSOCIATION WITH A LONG WAVE TROUGH ACROSS THE CONUS. VFR CONDITIONS UNDER STRONG HIGH PRESSURE THROUGH THE 12Z PERIOD.
STRONG 1044 MB RIDGE OVER SASKATCHEWAN WILL BUILD OVER THE NORTH CENTRAL PLAINS ON TODAY WITH A BREAK IN THE PRECIPITATION ACROSS CENTRAL ALABAMA FOR THE MOST PART EXCEPT FOR A LITTLE LINGERING SHALLOW MOISTURE SOME FLURRIES ARE POSSIBLE EARLY ON ACROSS THE FAR NORTHEAST. NORTHERLY FLOW AND CLOUDS WILL KEEP TEMPERATURES ON THE COOL SIDE FOR TODAY INTO FRIDAY AS THE RIDGE SINKS SOUTHEASTWARD TOWARD IOWA/MISSOURI.
524 AM CST THU FEB 26 2015 STRONG 1044 MB RIDGE OVER SASKATCHEWAN WILL BUILD OVER THE NORTH CENTRAL PLAINS ON TODAY WITH A BREAK IN THE PRECIPITATION ACROSS CENTRAL ALABAMA FOR THE MOST PART EXCEPT FOR A LITTLE LINGERING SHALLOW MOISTURE SOME FLURRIES ARE POSSIBLE EARLY ON ACROSS THE FAR NORTHEAST. NORTHERLY FLOW AND CLOUDS WILL KEEP TEMPERATURES ON THE COOL SIDE FOR TODAY INTO FRIDAY AS THE RIDGE SINKS SOUTHEASTWARD TOWARD IOWA/MISSOURI.
PATCHY FREEZING FOG APPEARS TO HAVE DISSIPATED FOR THE MOST PART, WHILE LOW STRATUS PERSISTS OVER ABOUT THE SE 3/4 OF THE FORECAST AREA. TEMPS HAVE CLIMBED JUST ABOVE FREEZING DESPITE THE CLOUDS IN HSV AND SHOULD FOLLOW SUIT ELSEWHERE.
929 AM EST THU FEB 26 2015 A COLD FRONT NOW ALONG A LINE FROM NEAR TITUSVILLE SOUTHWEST TO NEAR VENICE WILL CONTINUE TO SAG SLOWLY SOUTH THE REMAINDER OF TODAY BEFORE STALLING OUT ACROSS THE SOUTHERN PENINSULA LATER TODAY AND TONIGHT AS ITS MAIN UPPER SUPPORT MOVES AWAY. AS FOR THE REST OF TODAY SLIGHTLY COOLER AND DRIER AIR WILL FILTER INTO THE REGION IN THE WAKE OF THE FRONT. TEMPERATURES WILL BE COOLER TODAY WITH HIGHS IN THE MID AND UPPER 60S NORTH INTO CENTRAL ZONES. SOUTHWEST WINDS AROUND 10 KNOTS ACROSS THE SOUTHERN TERMINALS WILL BECOME WEST TO NORTHWEST AT 10 TO 15 KNOTS AFTER 17Z AS A COLD FRONT SINKS SOUTH. SHOWERS WITH A FEW EMBEDDED THUNDERSTORMS CONTINUE ACROSS THE FAR SOUTHERN WATERS THIS MORNING ASSOCIATED WITH A COLD FRONT PUSHING THOUGH THE AREA.