Aikyam-Lab/Synoptic-Bench huggingface dataset:
1119 PM CST THU JAN 29 2015 THE COLD FRONT WAS MOVING INTO METRO HOUSTON AT 05Z AND SHOULD BE THROUGH THE COASTAL SITES BETWEEN 07Z AND 08Z. A PRE FRONTAL TROUGH EXTENDS FROM ABOUT JASPER TO INTERCONTINENTAL AIRPORT TO COLUMBUS. A COLD FRONT LAGGED ABOUT 50-60 MILES TO THE NW AND EXTENDED FROM ABOUT LUFKIN TO HUNTSVILLE TO BRENHAM. SFC DEW PTS WILL FALL INTO THE LOWER 40S IN THE WAKE OF THE FRONT WITH THE FRONT CLEARING IAH BETWEEN 04-05Z AND THE COAST BETWEEN 06-07Z. CONSIDERABLY COOLER BY SUNRISE FRIDAY WITH NOT MUCH OF A WARM UP EXPECTED ON FRIDAY.
457 AM EST FRI JAN 30 2015 LAKE EFFECT SNOW SHOWERS WILL DIMINISH TODAY AS A RIDGE OF HIGH PRESSURE BEGINS TO BUILD IN FROM THE WEST.
AREAS OF FOG WILL INCREASE IN COVERAGE AS THE LOW LEVELS SATURATE.
ALTHOUGH THE LOW LEVEL DECK REMAINS OVER THE WESTERN COUNTIES AND HAS NOT MOVED BACK EAST YET. SFC RIDGING AND A DRIER AIRMASS WILL MOVE INTO MUCH OF THE REGION.
353 AM CST FRI JAN 30 2015 HIGH PRESSURE CENTERED ALONG THE UPPER MISSISSIPPI VALLEY WAS DOMINATING THE WEATHER ACROSS THE REGION THIS MORNING.
1138 PM CST THU JAN 29 2015 A DRY COLD FRONT HAS MOVED INTO THE NORTHERN SECTIONS OF THE FORECAST AREA LATE THIS EVENING AND WILL CONTINUE TO PUSH ACROSS THE AREA THROUGH THE OVERNIGHT HOURS. THE EXCEPTION WILL BE SOME PATCHY FOG THAT WILL IMPACT KHUM PRIOR TO THE COLD FRONTAL PASSAGE.
IT WILL TAKE A BIT OF TIME FOR ELEVATED PRECIP TO EVAPORATE AND MOISTEN THE LOWER LEVELS BEFORE MEASURABLE PRECIPITATION CAN START.
838 PM PST THU JAN 29 2015 Areas of low clouds and fog will persist across portions of Inland Northwest as high pressure remains in place.
PLENTY OF CLOUDS WERE FOUND TO BE UNDERCUTTING THE HIGH IN WARM AIR ADVECTION AHEAD OF A CLIPPER LIKE SYSTEM THAT IS PROGGED TO AFFECT THE AREA TODAY AND TONIGHT.
COLD FRONT HAS ALMOST REACHED THE GULF COAST AND NLY WINDS HAVE REMAINED RATHER GUSTY THIS EVENING. /ISSUED 359 PM CST THU JAN 29 2015/ THE COLD FRONT CONTINUES TO MAKE GOOD PROGRESS SE ACROSS THE REGION THIS AFTERNOON. BUT THIS SHOULD CHANGE OVERNIGHT AS THE POST-FRONTAL AIR MASS DEEPENS AND IS ABLE TO OVERCOME THE HIGHER TERRAIN OF THE OUACHITAS OF SE OK/WRN AR. GIVEN THE WARMER THAN ANTICIPATED TEMPS EVEN BEHIND THE FROPA THIS AFTERNOON. AS SFC RIDGING BUILDS E INTO MS VALLEY. AS THE UPPER TROUGH W OF THE BAJA COAST BEGINS TO CLOSE OFF OVER NRN BAJA/SRN CA.
COLD FRONT FROM NEAR ROME GEORGIA TO DEMOPOLIS LATE THIS EVENING.
/ISSUED 811 PM EST THU JAN 29 2015/ THE COLD FRONT IS JUST ABOUT TO ENTER NORTHWEST GEORGIA. WILL SEE A LULL IN PRECIPITATION INTO THE EARLY EVENING BEFORE THE NEXT CHANCE MOVES INTO THE NORTH WITH THE NEXT SHORT WAVE AND THE ASSOCIATED COLD FRONT. BIG QUESTION IS WHETHER OR NOT THERE WILL BE ENOUGH MOISTURE AVAILABLE WHEN THE COLDER AIR MOVES IN FOR A BRIEF MIXTURE OR TURN-OVER TO SNOW ACROSS THE HIGHER ELEVATIONS OF THE NORTH. HOWEVER SURFACE TEMPERATURES SHOULD BE MOSTLY ABOVE FREEZING AND NO SIGNIFICANT ACCUMULATIONS ARE ANTICIPATED. NOTICEABLY COOLER TEMPERATURES EXPECTED FRIDAY.
COLD FRONT NOW EAST OF THE AREA WITH A TRIALING UPPER TROUGH SET TO PUSH EAST OVERNIGHT. HIGHS ON FRIDAY MOSTLY IN THE LOWER 40S.
329 AM CST Fri Jan 30 2015 High pressure will build across central and southeast Illinois today from the northwest. This Canadian high will bring cooler air into the area than yesterday, but the fact that winds will be much lighter and at least partly sunny skies are anticipated should make for a decent late January day. Skies across the area are rapidly clearing from the northwest as the high builds in, but there are still significant patches of clouds upstream beneath the ridge axis across the upper Midwest.
MID AND HIGH-LEVEL MOISTURE WILL CONTINUE TO STREAM IN FROM THE WEST OVERNIGHT AS THE UPPER RIDGE SLOWLY EXITS THE AREA. SO AS SHOWERS DEVELOP IN THE HIGH COUNTRY ON FRIDAY. MODELS SHOW THE UPPER RIDGE NOW OVER COLORADO SLIDING SLOWLY EASTWARD TONIGHT AND FRIDAY. A COLD FRONT WITH UPSLOPE FLOW IN ITS WAKE IS PROGGED TO SPREAD SOUTH ACROSS THE PLAINS BY MID/LATE AFTERNOON ON FRIDAY. THEN CLOUDS AND HUMIDITY APPROACH FROM THE WEST-SOUTHWEST WITH THE ADVANCING CLOSED LOW OVER THE SOUTHWESTERN U. ALL THE MODELS SHOW AN UPPER LEVEL LOW PRESSURE SYSTEM CENTERED OVER SOUTHERN CALIFORNIA FRIDAY NIGHT. THIS LOW ELONGATES AS IT MOVES SOUTH INTO NORTHERN MEXICO OVER THE WEEKEND.
MOST OF THE OPERATIONAL MODELS HAVE THE WARM FRONT THROUGH THE REGION BY ABOUT 11 AM. WINDS THEN SHIFT FROM THE NORTHWEST AND THE COLD FRONT DIVES SOUTHEAST ACROSS THE AREA THIS AFTERNOON. IT APPEARS THE SOUTHWEST WILL BE FAVORED FOR A NICE QUICK WARM UP BEFORE THE COLD FRONT MOVES THROUGH. WEST DOWNSLOPING WINDS AND A WARM FRONT NEARBY THE SOUTHWEST SHOULD SEE TEMPERATURES APPROACHING THE LOW 50S. THE NORTH SHOULD REMAIN COOLER AS THE COLD FRONT WILL ENTER EARLIER AND COLD AIR ADVECTION TAKE HOLD.
209 AM EST FRI JAN 30 2015 A COLD FRONT WILL CONTINUE SHIFTING EAST ACROSS THE FORECAST AREA EARLY THIS MORNING.
1000 PM MST Thu Jan 29 2015 An upper level ridge of high pressure extending north through the interior western US will maintain a dry NW flow aloft over the region tonight. Mid-high level clouds associated with a very weak disturbance moving east through the upper ridge should move off to the east of the region later tonight. Central Montana will remain underneath high pressure aloft through Friday and the airmass will remain dry with light surface winds.
1145 PM EST THU JAN 29 2015 LOW PRESSURE OVER ONTARIO WILL TRACK INTO NORTHERN NEW ENGLAND FRIDAY AS HIGH PRESSURE BUILDS EAST OVER THE SOUTHERN GREAT LAKES.
205 AM EST FRI JAN 30 2015 AN ALBERTA CLIPPER/ARCTIC COLD FRONT WILL CROSS THE AREA TONIGHT.
1058 PM CST THU JAN 29 2015 FOR 06Z TAFS /ISSUED 955 PM CST THU JAN 29 2015/ COLD FRONT IS JUST ABOUT THROUGH THE AREA THIS EVENING. EVEN WITH THE PASSAGE OF A COLD FRONT. COLD FRONT IS PRETTY MUCH THROUGH THE AREA.
WITH LOW PRESSURE SLIDING ACROSS THE SAINT LAWRENCE VALLEY. NORTHWEST FLOW AND TROUGHING ARE CURRENTLY RESIDING ACROSS THE EASTERN CONUS. WITH A PRONOUNCED SHORT WAVE TROUGH DROPPING SOUTHEAST ACROSS THE OHIO VALLEY. TEMPERATURES ARE CURRENTLY RUNNING IN THE LOW TO MID 30S. WITH THE EXCEPTION OF THE HIGHER TERRAIN. THE OHIO VALLEY SHORT WAVE TROUGH WILL CONTINUE TO DROP SOUTHEAST TOWARDS OUR AREA THROUGH EARLY THIS MORNING. LAPSE RATES WILL STEEPEN UP IN THE LOW LEVELS AS COLD AIR ADVECTION TAKES PLACE ALOFT. AS WELL AS BRIDGES AND OVERPASSES IS STILL POSSIBLE. HIGHS TODAY WILL NOT BE MUCH WARMER THAN LOWS FOR THIS MORNING. GENERALLY IN THE LOW TO MID 30S. HIGH PRESSURE WILL BUILD IN TONIGHT.
820 PM PST THU JAN 29 2015 A TROUGH OF LOW PRESSURE WILL BRING MOIST NORTHEAST FLOW INTO THE AREA.
319 AM EST FRI JAN 30 2015 A COLD FRONT WILL CONTINUE SHIFTING EAST ACROSS THE FORECAST AREA EARLY THIS MORNING.
314 AM EST FRI JAN 30 2015 AN ALBERTA CLIPPER/ARCTIC COLD FRONT WILL CROSS THE AREA TONIGHT.
956 PM PST THU JAN 29 2015 Areas of low clouds and fog will persist across portions of Inland Northwest as high pressure remains in place.
COLD FRONT APPEARS TO BE JUST NORTH OF THE COUNTY WARNING AREA AT THIS TIME. A WEAK PRE FRONTAL TROUGH WAS ENTERING NORTHERN COUNTIES OF CWA AS OF MID EVENING WITH MAIN COLD FRONT PUSHING THROUGH SAN ANTONIO.
A MUCH COLDER AIR MASS IS IN PLACE THAN 24 HRS AGO, WITH STRONG HIGH PRESSURE OVER THE UPPER MIDWEST BUILDING INTO MIDDLE TENNESSEE.
A COLD FRONT EXTENDING FROM JUST SOUTHEAST OF KAEX TO JUST NORTHWEST OF KBPT. /ISSUED 944 PM CST THU JAN 29 2015/ COLD FRONT NOW CROSSING THE CWA. A COLD FRONT WILL ADVANCE ACROSS THE FORECAST AREA OVERNIGHT.
350 AM EST FRI JAN 30 2015 INITIALLY WEAK LOW PRESSURE WILL TRACK EASTWARD FROM THE GREAT LAKES AND REACH THE NEW ENGLAND COAST TODAY. THIS LOW WILL THEN INTENSIFY RAPIDLY AS IT MOVES NORTHEAST TO THE CANADIAN MARITIMES. HIGH PRESSURE FOLLOWS OVER THE WEEKEND.
300 AM CST FRI JAN 30 2015 (Today and Tonight) An upper trough will dominate the western CONUS today with a closed upper low over southern California. A southwest flow aloft on the eastern periphery of the western trough will pump substantial Pacific moisture over the Desert Southwest today including extreme West Texas. As the upper trough continues to trek eastward through tonight, concomitant with periodic disturbances embedded in the southwest flow aloft, chances of rain will be on the increase and should envelop the entire forecast area by late this evening and through the overnight hours. Highs today under cloudy skies will be in the upper 40s to the lower 50s.
AS SOUTHERN GULF HIGH PRESSURE TRANSITIONS INTO THE SOUTHEASTERN U. AS INTERIOR DEW POINTS SLOWLY CLIMB INTO THE LOWER 50S / UPPER 50S OVER THE WATERS. UPPER TRANSITORY RIDGING MOVING EAST TODAY WILL EVOLVE INTO THE REGION FALLING DOWNSTREAM OF A LARGE BAJA REGION UPPER LOW THROUGH LATE WEEK.
315 AM PST WED JAN 28 2015 DRY AND A LITTLE WARMER TODAY UNDER WEAK HIGH PRESSURE.
CHATTANOOGA AIRPORT, TN 50 34 55 34 / 10 10 20 20 KNOXVILLE MCGHEE TYSON AIRPORT, TN 43 29 52 32 / 10 10 30 30 OAK RIDGE, TN 43 29 50 32 / 10 10 30 30 TRI CITIES AIRPORT, TN 40 23 50 30 / 10 10 40 50.
A COLD FRONT MOVES ACROSS THE AREA THURSDAY AFTERNOON SWITCHING WINDS TO N TO NE. FORECAST HIGHS IN THE LOWER 80S WAS DECIDED ON. A WEAK COLD FRONT PASSAGE THURSDAY WILL BEGIN A MORE ACTIVE PERIOD OVER THE WEEKEND.
ISSUED BY NATIONAL WEATHER SERVICE NEW ORLEANS LA 938 AM CST WED JAN 28 2015 SOUTHWEST LOUISIANA AND SOUTHEAST TEXAS REMAIN ON THE SOUTHWEST PART OF A HIGH PRESSURE RIDGE. SHOULD BE ANOTHER QUIET DAY AVIATION-WISE AS VFR CONDITIONS PREVAIL THANKS TO HIGH PRESSURE SFC/DRY NWRLY FLOW ALOFT. SHOULD SEE SRLY WINDS PICK UP A BIT AT KBPT/KLCH/KARA TODAY THANKS TO A TIGHTENING PRESSURE GRADIENT ON THE BACK SIDE OF THE HIGH.
LIGHT WINDS AND VFR CONDITIONS WILL DOMINATE OVER THE TAF SITES THROUGH THE PERIOD AS HIGH PRESSURE BUILDS IN.
955 AM CST WED JAN 28 2015 ALTHOUGH A COLD FRONT IS STILL EXPECTED TO DROP SOUTH INTO THE REGION TONIGHT.
FORECAST HIGHLIGHTS IN THE SHORT TERM PERIOD WILL BE COOLER TEMPERATURES. ZONAL FLOW ALOFT WITH THE UPPER LEVEL RIDGE FLATTENING ACROSS THE GREAT PLAINS IN RESPONSE TO SOUTHERN AND NORTHERN STREAM S/WV'S CROSSING THE ROCKIES. SOUTH/SOUTHEASTERLY RETURN FLOW AHEAD OF THE LOW HAS MAINTAINED LOW STRATUS AND/OR FOG ACROSS EASTERN NORTH DAKOTA SINCE YESTERDAY EVENING. SURFACE WINDS BECOME MORE NORTHWESTERLY AND INCREASE THROUGH THE MORNING INTO THE AFTERNOON BEHIND A STRONG SFC COLD FRONT.
Also, a cold front will move south across the area after midnight, to near a San Angelo to Brownwood line by 12Z Thursday.
HENCE TEMPERATURES ARE EXPECTED TO BE A COUPLE OF DEGREES WARMER. MODELS CONTINUE TO SHOW A WEAK COLD FRONT THU NIGHT BRINGING COOLER TEMPS TO S TX. THE UPPER LEVEL RIDGE WILL SHIFT E AS AN UPPER LOW MOVES ACROSS BAJA CA. RAIN CHCS INCREASE AND SPREAD E FRI NIGHT/SAT AS THE UPPER LOW APPROACHES THE REGION AND PWATS INCREASE TO OVER 1 INCH.
751 AM EST WED JAN 28 2015 HIGH PRESSURE WILL PROVIDE A DRY BUT COLD DAY. CROSSING LOW PRESSURE WILL BRING A WINTRY MIX THURSDAY. RIDGE CONTINUES TO DRIFT EASTWARD TONIGHT AND WAA WILL BE ONGOING AHEAD OF THE UPPER LEVEL SYSTEM. WAA CONTINUES AHEAD OF BOUNDARY AS LOW LEVEL JET WILL PULL WARMER AIR NORTHWARD. COLD FRONT QUICKLY CLEARS THE AREA THURSDAY EVENING AND MUCH COLDER AIR WILL PLUNGE BACK INTO THE REGION.
706 AM EST WED JAN 28 2015 INTENSE LOW PRESSURE NE OF CAPE COD EARLY THIS MORNING WILL CONTINUE TO LIFT NORTHEAST TOWARD THE CANADIAN MARITIMES TODAY.
WHILE OBSERVING STATIONS IN THE LOWER KEYS HAVE CREPT INTO THE MID 60S.
A cold front with a wind shift to the north and northeast is expected late in the period across the northern terminals. Plains and into the region ahead of a cold front. The forecast will turn wet thereafter as a highly amplified upper trough currently off the California coast heads east.
ANOTHER UPPER LEVEL RIDGE IS EXPECTED TO DEVELOP OVER THE PACIFIC NORTHWEST LATER IN THE WEEK AND CONTINUE INTO THE WEEKEND FOR MORE DRY WEATHER.
520 AM CST Wed Jan 28 2015 Latest surface analysis indicates high pressure just off to our east which is expected to shift further away from our area during the day. This to bring a cold front east across IL overnight and into central Indiana by midday Thu. Strong low level jet with 850 mb winds 40-50 kts to continue gusty winds tonight, then gusty south winds turn WNW behind cold front Thu. Highs Thu in upper 30s from I-74 north and mid 40s in southeast IL with temps likely slipping behind cold front during afternoon.
945 AM EST WED JAN 28 2015 HIGH PRESSURE WILL BUILD OVER THE REGION TODAY.
SHOULD BE ANOTHER QUIET DAY AVIATION-WISE AS VFR CONDITIONS PREVAIL THANKS TO HIGH PRESSURE SFC/DRY NWRLY FLOW ALOFT. SHOULD SEE SRLY WINDS PICK UP A BIT AT KBPT/KLCH/KARA TODAY THANKS TO A TIGHTENING PRESSURE GRADIENT ON THE BACK SIDE OF THE HIGH.
630 AM EST WED JAN 28 2015 HIGH PRESSURE WILL ALLOW FOR DRY CONDITIONS ACROSS THE AREA TODAY. A COLD FRONT WILL APPROACH AND MOVE THROUGH THE REGION ON THURSDAY.
A ridge of high pressure builds over the area this weekend with night and morning valley fog possible.
330 AM PST WED JAN 28 2015 A WEAK RIDGE WILL BUILD IN TODAY. BRINGING WARMER TEMPERATURES AND LIGHT OFFSHORE BREEZES.
High pressure will rebuild in Idaho and western Montana today and stable conditions tonight will be favorable to fog redevelopment by Thursday morning.
A COLD FRONT MOVES THROUGH THE AREA TONIGHT BRINGING A RETURN TO JANUARY.
333 AM MST WED JAN 28 2015 WENT AHEAD AND CANCELLED THE HIGH WIND WARNINGS FOR SOUTHEAST WYOMING.
A WEAK RIDGE WILL BUILD IN TODAY. BRINGING WARMER TEMPERATURES AND LIGHT OFFSHORE BREEZES.
SHORT TERM MODELS INDICATE MOISTURE IN THIS LAYER WILL ERODE RATHER QUICKLY AFTER SUNRISE, AND THIS IS REASONABLE GIVEN SOLAR HEATING AND THE RIDGE AXIS/DRIER AIR SHIFT EAST THIS MORNING.
918 AM EST WED JAN 28 2015 HIGH PRESSURE WILL CONTINUE TO BUILD FROM THE NORTHWEST TODAY. AS HIGH PRESSURE BUILDS IN FROM THE NORTHWEST.
942 AM CST WED JAN 28 2015 UPPER AND LOWER LEVEL RIDGING OVER SOUTHEAST TEXAS LEADING TO CLEAR SKIES AND LIGHT WINDS. AS SOUTHERN GULF HIGH PRESSURE TRANSITIONS INTO THE SOUTHEASTERN U. AS INTERIOR DEW POINTS SLOWLY CLIMB INTO THE LOWER 50S/UPPER 50S OVER THE WATERS. UPPER TRANSITORY RIDGING MOVING EAST TODAY WILL EVOLVE INTO THE REGION FALLING DOWNSTREAM OF A LARGE BAJA REGION UPPER LOW THROUGH LATE WEEK.
525 AM EST WED JAN 28 2015 INTENSE LOW PRESSURE NE OF CAPE COD EARLY THIS MORNING WILL CONTINUE TO LIFT NORTHEAST TOWARD THE CANADIAN MARITIMES TODAY.
LEE TROUGHING EXTENDS FROM WESTERN ND DOWN INTO THE OK PANHANDLE WITH HIGH PRESSURE CENTERED OVER THE OHIO VALLEY. MUCH COOLER AIR WILL SPILL SOUTH BEHIND THE COLD FRONT TONIGHT INTO THU. EVEN THOUGH HIGHS WILL BE AROUND 20 DEGREES COOLER. PRECIP WILL SPREAD FROM SW TO NE FRI NIGHT AS ISENTROPIC LIFT AND LOW LEVEL WARM ADVECTION INCREASES AHEAD OF THE UPPER LOW OVER THE SW CONUS. LATEST MODEL RUNS DID WARM UP THE LOWER LAYERS COMPARED TO THE EARLIER RUNS WHICH SHOULD LEAD TO A BIT MORE RAIN THEN SNOW. FOR THE FIRST TIME IN A WHILE HIGHS ON SUN WILL BE WELL BELOW NORMAL WITH MOST LOCATIONS NOT GETTING TO THE FREEZING MARK. THIS COOLER AIR SHOULD REMAIN INTO THE START OF THE WORK WEEK.
447 AM MST WED JAN 28 2015 THE LOW PRESSURE DISTURBANCE THAT MOVED NORTHWARD THROUGH NV YESTERDAY HAS BEEN PICKED UP BY THE WESTERLY FLOW OVER THE NORTHERN TIER STATES. AS THE TROUGH AXIS PASSES LATER THIS MORNING A NORTHWEST FLOW WILL DEVELOP WHICH WILL COMBINE WITH THE STILL MOIST AIR MASS TO KEEP AREAS OF PRECIPITATION OVER THE FAVORED NORTHERN MOUNTAINS.
418 AM CST WED JAN 28 2015 LATEST SURFACE ANALYSIS SHOWED A 1025MB OVER THE OHIO VALLEY WITH THE ASSOCIATED RIDGE AXIS EXTENDING SOUTHWEST TO NORTH CENTRAL GULF AND 1005MB LOW OVER THE NORTHERN/CENTRAL PLAINS. UPPER AIR ANALYSIS SHOWED THE MAIN TROUGH AXIS FROM MAINE TO EAST OF THE MID ATLANTIC STATES. AN UPPER LEVEL RIDGE AXIS WAS LOCATED FROM EAST TEXAS TO MINNESOTA AND NORTHWEST FLOW OVER MISSISSIPPI VALLEY AND EASTERN ONE THIRD CONUS. COLD AIR ADVECTION WILL DIMINISH AS THE UPPER RIDGE SLIDE EAST OVER THE MISSISSIPPI VALLEY. NOT EXPECTING AN AMPLIFIED RIDGE BUT HEIGHTS WILL INCREASE ACROSS THE LOWER MISSISSIPPI VALLEY AND ALLOW TEMPS TO RISE TO THE MID 70S ON THURSDAY.
AS SOUTHERN GULF HIGH PRESSURE TRANSITIONS INTO THE SOUTHEASTERN U. AS INTERIOR DEW POINTS SLOWLY CLIMB INTO THE LOWER 50S/UPPER 50S OVER THE WATERS. UPPER TRANSITORY RIDGING MOVING EAST TODAY WILL EVOLVE INTO THE REGION FALLING DOWNSTREAM OF A LARGE BAJA REGION UPPER LOW THROUGH LATE WEEK.
MOST OF THE AREA IS ABOVE FREEZING BUT PORTIONS OF THE UPPER SNAKE RIVER PLAIN IS FREEZING BRINGING SLICK FREEZING FOG.
939 AM EST WED JAN 28 2015 HIGH PRESSURE EXTENDING FROM THE GREAT LAKES TO THE GULF COAST WILL BUILD EAST ACROSS THE AREA THROUGH TONIGHT AND MOVE OFFSHORE THURSDAY. A COLD FRONT WILL MOVE ACROSS THE REGION THURSDAY NIGHT.
544 AM CST WED JAN 28 2015 HIGH PRESSURE WILL MOVE EAST OF THE AREA TODAY. A WARM FRONT WILL MOVE THROUGH THE STATE THIS AFTERNOON AND A COLD FRONT TONIGHT. WINDS WILL BECOME NORTHWEST BEHIND THE COLD FRONT.
637 AM EST WED JAN 28 2015 HIGH PRESSURE WILL PROVIDE A DRY BUT COLD DAY. RIDGE CONTINUES TO DRIFT EASTWARD TONIGHT AND WAA WILL BE ONGOING AHEAD OF THE UPPER LEVEL SYSTEM. WAA CONTINUES AHEAD OF BOUNDARY AS LOW LEVEL JET WILL PULL WARMER AIR NORTHWARD. COLD FRONT QUICKLY CLEARS THE AREA THURSDAY EVENING AND MUCH COLDER AIR WILL PLUNGE BACK INTO THE REGION.
550 AM EST WED JAN 28 2015 LOW PRESSURE BETWEEN CAPE COD AND NOVA SCOTIA WILL CONTINUE TO GRADUALLY MOVE NORTHEAST. A PRESSURE RIDGE MOVING INTO THE FORECAST AREA FROM THE WEST TODAY WILL EXTEND THROUGH THE AREA TONIGHT. A COLD FRONT WILL MOVE ACROSS THE REGION THURSDAY NIGHT. THE PRESSURE RIDGE MOVING INTO THE AREA FROM THE WEST TODAY WILL EXTEND THROUGH THE AREA TONIGHT. THE PRESSURE GRADIENT WILL CONTINUE TO RELAX AS THE RIDGE MOVES INTO THE AREA AND MUCH LESS WIND WILL OCCUR TODAY COMPARED TO YESTERDAY. YESTERDAY/S VERIFICATION SUPPORTS THE COOLER TEMPERATURE GUIDANCE TODAY. STRONG NET RADIATIONAL COOLING FAVORS THE LOWER GUIDANCE TEMPERATURES TONIGHT.
COLD TEMPS EXPECTED TONIGHT YET NAM DETERMINISTIC SOUNDINGS NOT CONDUCIVE TO FROZEN/FREEZING PCPN. THE COASTAL TROUGH WL THUS INCREASE THE LIKELIHOOD OF PCPN OVER THE MSA OVERNIGHT/EARLY WEDNESDAY. DRIER AIR ASSOCIATED WITH THE SURGE WL CONTRIBUTE TO SIGNIFICANTLY WARMER MAX TEMPS WEDNESDAY.
RUC MODELS SPORTING A WEAK H85 TROUGH KICKING OFF SHOWERS ACROSS THE SOUTHERN CWA THIS MORNING. THICK CLOUDS WILL REMAIN TODAY WITH A LIGHT NORTHERLY FLOW KEEPING TEMPERATURES ON THE COOL SIDE WITH MID 40S ACROSS THE COASTAL PLAINS TO THE LOW 50S ACROSS THE WESTERN BRUSH COUNTRY. A COASTAL TROUGH DEVELOPS LATE TONIGHT WITH MOISTURE AND ISENTROPIC UPGLIDE RETURNING ACROSS THE EASTERN CWA. ADDITIONAL CONVERGENCE IS INTRODUCED TONIGHT AS A SECOND SURGE OF HIGH PRESSURE MOVES INTO THE REGION. THIS BOUNDARY SETTING UP NEXT TO THE COASTAL TROUGH WILL LEAD TO CONTINUED HIGH CHANCE POPS FOR SHOWERS TONIGHT ACROSS THE COASTAL PLAINS.
24/18Z TROUGH MOVING THROUGH THE STATE WILL CONTINUE TO PROVIDE SOME STRONG CAA THIS AFTERNOON BEFORE DECOUPLING THIS EVENING.
917 AM PST TUE FEB 24 2015 DRY AND WARMER TODAY WITH BREEZY NORTHERLY WINDS IN PARTS OF SAN BERNARDINO.
1213 PM EST TUE FEB 24 2015 A WEAK RIDGE OF HIGH PRESSURE WILL BE OVER THE NORTH COUNTRY TODAY. A LOW PRESSURE AREA MOVING SOUTHEAST FROM CANADA WILL BRING A CHANCE OF SNOW SHOWERS TO THE REGION TONIGHT AND WEDNESDAY. AN ARCTIC COLD FRONT WILL MOVE THROUGH THE REGION ON WEDNESDAY BRINGING YET ANOTHER ROUND OF ARCTIC AIR TO THE NORTH COUNTRY.
WEAK BACKDOOR COLD FRONT WILL MOVE INTO NORTHEAST NEBRASKA THIS AFTERNOON WITH HIGHER TEMPERATURES TO THE WEST AND COOLER TEMPERATURES TO THE NORTHEAST. A BRIEF PERIOD OF FREEZING OR MIXED PRECIPITATION MAY OCCUR ALONG THE LEADING EDGE OF THE FRONT OVER THE NEBRASKA SANDHILLS BUT NOT A REAL CLEAR SIGNAL AND HAVE LEFT OUT OF THE FORECAST FOR NOW. THE MEDIUM RANGE MODELS SHOW AN ADDITIONAL UPGLIDE AREA SUPPORTIVE OF SNOW ACROSS THE PANHANDLE AND THE HIGHER TERRAIN OFF TO OUR WEST.
1128 AM EST TUE FEB 24 2015 ARCTIC HIGH PRESSURE OVER THE REGION WILL SHIFT OFFSHORE TODAY. A COLD FRONT APPROACHES TONIGHT AND WILL PASS THROUGH THE REGION ON WEDNESDAY. HIGH PRESSURE BUILDS FROM THE WEST AS LOW PRESSURE PASSES TO THE SOUTH LATE THIS WEEK. THE HIGH MOVES OVER THE AREA THIS WEEKEND.
103 PM EST TUE FEB 24 2015 ARCTIC HIGH PRESSURE OVER THE REGION WILL SHIFT OFFSHORE TODAY. A COLD FRONT APPROACHES TONIGHT AND WILL PASS THROUGH THE REGION ON WEDNESDAY. HIGH PRESSURE BUILDS FROM THE WEST AS LOW PRESSURE PASSES TO THE SOUTH LATE THIS WEEK. THE HIGH MOVES OVER THE AREA THIS WEEKEND.
THREE DISTINCT S/W TROFS WILL AFFECT THE REGION TODAY. THE PASSAGE OF AN ARCTIC COLD FRONT THIS AFTERNOON SHOULD ALSO PRODUCE SCT SNOW SHOWERS OR FLURRIES. MILDER TEMPS IN THE 20S TO AROUND 30 RANGE WILL OCCUR AHEAD OF THE COLD FRONT. BUT SHOULD BE HINDERED BY STRONG DOWNWARD FORCING AND RIDGING FROM THE INCOMING ARCTIC HIGH.
THICKNESSES JUST ABOVE THRESHOLDS AND FORECAST SOUNDINGS LOOK CLOSE TO FREEZING. /ISSUED 756 AM CST TUE FEB 24 2015/ HAVE UPDATED THE FREEZING RAIN ADVISORY AND ENDED THE ADVISORY ACROSS THE I-10 CORRIDOR. FREEZING LINE ALONG I-10 NORTHWARD EARLY THIS MORNING. WITH THE FREEZING TEMPS. WITH THE CONTINUED THREAT TO BE ON ELEVATED ROADWAYS/BRIDGES & EXPOSED OBJECTS ABOVE GROUND. WILL KEEP THE FREEZING RAIN ADVISORY. GRADUALLY TAPERING OFF BY 10-11 AM AS TEMPS RISE ABOVE FREEZING. NO ACCUMULATIONS WITH THE TEMPS ABOVE FREEZING. AS SCHOOLS ARE ALREADY CLOSED FOR TODAY'S FREEZING RAIN THREAT. A MUCH NOTICEABLE WARMING TREND AND CHANCE OF SHOWERS EXPECTED BY SUN AS THE HIGH MOVES EAST WITH MOIST GULF RETURN FLOW COUPLED WITH ANOTHER UPPER AIR PERTURBATION. STRONGER OFFSHORE FLOW EXPECTED WEDNESDAY FROM AN AREA OF LOW PRESSURE TRACKING ACROSS THE NORTHERN GULF.
THIS THIN BAND OF MID LEVEL MOISTURE SHOULD CONTINUE TO THIN AS IT WORKS UNDER THE RIDGE. READINGS WILL GET ABOVE FREEZING ON THE PLAINS WITH GENERALLY UPPER 30S TO LOWER 40S EXPECTED OVER SNOW COVERED AREAS. MODELS CONTINUE TO SHOW AN ACTIVE WEEK AHEAD AS THE PERSISTENT RIDGING OVER THE EASTERN PACIFIC AND DEEP TROUGH OVER THE GREAT LAKES AND NORTHEASTERN U. A SHORT WAVE EMBEDDED IN THE NORTHWEST FLOW WILL MOVE ACROSS NORTHERN COLORADO WEDNESDAY AFTERNOON AND EVENING ALONG WITH A SURFACE COLD FRONT THAT PRODUCES A ROUND OF SNOW OVER THE MOUNTAINS AND NORTHEAST PLAINS.
1031 AM MST TUE FEB 24 2015 OLD CLOSED LOW OVER NW AZ IS FORECAST TO MOVE SLOWLY TO THE EAST SOUTHEAST INTO NM BY THIS AFTERNOON. ALREADY SEEING TEMPERATURES WARMING ACROSS THE HIGH COUNTRY AND SPREADING DOWN INTO THE LOWER EASTERN SLOPES WITH THE WESTERLY WINDS. COLORADO SPRINGS WHICH WAS IN THE SINGLE DIGITS LAST EVENING HAS WARMED INTO THE LOWER 20S. AND NORTH TO NORTHWEST BREEZES THIS MORNING SHOULD HELP TEMPERATURES WARM TO ABOVE FREEZING. KEPT THEM IN THE LOWER 30S ACROSS THE SAN LUIS VALLEY. SO SOME AREAS MAY ACTUALLY END UP SLIGHTLY COOLER THAN YESTERDAY. INCREASING NORTHWEST FLOW LEADS TO LEE TROFFING AND INCREASING WESTERLY WINDS. THIS SHOULD KEEP LOWS IN THE 20S ALONG THE LOWER EASTERN SLOPES. WHILE THE LOWER ARKANSAS RIVER VALLEY DROPS INTO THE TEENS.
DECENT CLEARING IN WAKE OF COLD PUSH HOWEVER WITH CONVECTIVE TEMPERATURES IN THE HIGH SINGLE DIGITS CANNOT RULE OUT SOME SC DEVELOPMENT.
1229 PM EST TUE FEB 24 2015 COLD HIGH PRESSURE WILL EXTEND OVER THE AREA TODAY WITH LOW PRESSURE DEVELOPING TO THE SOUTHEAST OF THE AREA THIS EVENING.
354 PM CST TUE FEB 24 2015 BREAKS IN THE CLOUD COVER THIS AFTERNOON HAVE ALLOWED HIGHS OVER THE LOWER ATCHAFALAYA BASIN TO WARM INTO THE LOWER 50S. AS THE UPPER TROF REACHES CENTRAL TX EARLY WEDNESDAY. WITH THE LOW FCST TO TRACK NE TWD THE FL PANHANDLE BY WED EVE AS THE UPPER TROF TRANSLATES QUICKLY EASTWARD THROUGH THE REGION. A WARMING TREND IS EXPECTED OVER THE WEEKEND AS THIS HIGH SHIFTS OFF TO THE EAST. STRONGER OFFSHORE FLOW IS EXPECTED WEDNESDAY FROM AN AREA OF LOW PRESSURE TRACKING ACROSS THE NORTHERN GULF.