Aikyam-Lab/Synoptic-Bench huggingface dataset:
301 PM CST Sat Jan 17 2015 A cold front has pushed through the forecast area early this afternoon.
A WEAK COLD FRONT WILL MOVE THROUGH SOUTH TEXAS TONIGHT.
LATE AFTERNOON SURFACE OBSERVATIONS SHOW A TROUGH ACROSS WEST CENTRAL TEXAS. WITH A COLD FRONT TRAILING BEHIND OVER PORTIONS OF FAR WEST TEXAS.
TEMPS ON SUNDAY IN THE LOW TO MIDDLE 50S EXCEPT NORTHEAST MIDDLE TENNESSEE AND ALONG THE PLATEAU WHERE HIGHS WILL BE IN THE UPPER 40S.
416 PM EST SAT JAN 17 2015 A COLD FRONT WILL MOVE INTO THE REGION TONIGHT AND PASS OFF TO THE EAST EARLY SUNDAY.
321 PM CST SAT JAN 17 2015 HIGH PRESSURE OVER THE COAST HAS WEAKENED AND MOVED OFF TO THE EAST AND WINDS HAVE BECOME SOUTHWESTERLY AND TEMPERATURES HAVE WARMED TO THE MID TO UPPER 60S. COLD FRONT MOVING THROUGH DFW AT 2 PM AND SHOULD ARRIVE IN THE CWA LATE THIS EVENING AND EARLY SUNDAY MORNING. SOME PATCHY FOG MAY BE POSSIBLE IN THE SOUTH AFTER MIDNIGHT AND BEFORE THE FRONT ARRIVES (BUT CONFIDENCE IS LOW ENOUGH AT PRESENT TO HOLD OFF ON ANY MENTION) DRY AIR WILL QUICKLY SPREAD ACROSS SETX SUNDAY WITH A COOL START TO THE MORNING IN THE LOWER 40S.
A cold front is currently moving through the area, now just south of KMAF, KINK, and KPEQ, and should move through KFST within the first hour of the forecast period. /ISSUED 338 AM CST Sat Jan 17 2015/ A cold front will move south through the region today, with somewhat breezy north winds in its wake for this afternoon (particularly across Permian Basin region).
128 PM EST SAT JAN 17 2015 HIGH PRESSURE OVER THE REGION WILL MOVE OFFSHORE THIS AFTERNOON. AN UPPER LEVEL DISTURBANCE AND COLD FRONT CROSSING THE AREA TONIGHT INTO SUNDAY WILL BRING ANOTHER CHANCE FOR SHOWERS. HIGH PRESSURE WILL MOVE AWAY FROM THE REGION THIS AFTERNOON AS WEAK LOW PRESSURE BEGINNING TO DEVELOP ALONG THE COAST PUSHES MOISTURE ONSHORE AND A WEAK FRONT APPROACHES FROM THE WEST. THE MAIN UPPER TROUGH WILL CONTINUE TO DEEPEN AND MOVE THROUGH THE REGION DURING THE DAY.
CYCLONIC FLOW THIS EVENING/EARLY SUNDAY WITH THE DEPARTING SYSTEM WILL LIKELY CAUSE THE THE LOWER CLDS TO LINGER ACROSS EC MN/WC WI. NO OTHER CONCERNS THRU SUNDAY AFTN AS TEMPS WILL BE A FEW DEGREES COOLER THAN TODAY. BUT STILL IN THE LOW TO MID 30S.
Tornadic threat should be on the lower end as surface winds veer.
THE WARM FRONT REMAINED SOUTH OF THE BORDER THROUGHOUT THE DAY. ELEVATED CONVECTION WILL CONTINUE TO PRIMARILY BE LOCATED WELL NORTH OF THE WARM FRONT IN THE NORTH CENTRAL AND NORTHEAST AREAS OF THE STATE. OF THE HIGH RES MODELS THE HRRR HAS HANDLED THE SITUATION BEST SO FAR AND SUGGESTS THAT THE BEST LOCATIONS FOR THUNDERSTORMS REMAINS IN THE NORTHEAST AREAS OF THE STATE AND SHOWERS FOR THE REST.
/ISSUED 325 PM CDT TUE APR 7 2015/ ANOTHER WARM AND HUMID DAY ACROSS THE FORECAST AREA AS HIGH PRESSURE AROUND FLORIDA AND LOW PRESSURE IN KANSAS KEEPS A SOUTHERLY FLOW OFF THE GULF INTACT. UPPER LEVEL LOW ACROSS NORTHERN CALIFORNIA IS STILL EXPECTED TO OPEN UP AND MOVE EASTWARD ACROSS THE ROCKIES AND THE NORTHERN PLAINS.
CHATTANOOGA AIRPORT, TN 64 83 64 83 / 20 30 10 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 60 80 61 82 / 30 40 10 30 OAK RIDGE, TN 61 80 62 81 / 40 40 10 30 TRI CITIES AIRPORT, TN 55 77 56 80 / 40 40 20 40.
/ISSUED 345 PM CDT Tue Apr 7 2015/ (Today and Tonight) Currently, west Texas is under southwest flow aloft with a strong upper level low moving across California, and zonal flow across most of the eastern U. There are a few Cu trying to get going over the higher terrain to our west, but these have been struggling. While there is an outside chance for isolated thunderstorms this evening from this higher terrain to move into our area, not confident than any of these potential storms making it farther east than Crockett County tonight.
A LOW PRESSURE SYSTEM MOVING EASTWARD ACROSS THE GREAT BASIN WILL BRING GUSTY WINDS AGAIN WEDNESDAY ALONG WITH COOLER TEMPERATURES.
Lingering mountain showers Wednesday, otherwise dry and warmer for the latter part of the week. The low will move well to the east for Wednesday but some lingering moisture and a very weak wave moving onto the Pacific Northwest may be able to help touch off some isolated showers during the day.
LOCALLY GENERATED CONVECTIVE PARAMETERS SUGGEST THE CAP IS EFFECTIVELY ERODING FROM BRECKENRIDGE TO GRAHAM.
630 PM CDT TUE APR 7 2015 FOR 00Z TAFS /ISSUED 249 PM CDT TUE APR 7 2015/ CURRENT WATER VAPOR IMAGERY SHOWS A FAIRLY STRONG UPPER LEVEL LOW JUST OFF OF THE NW COAST. WEAK UPPER LEVEL RIDGING CONTINUES TO BUILD IN ACROSS THE SOUTHEAST. THE AXIS OF THE UPPER LEVEL RIDGE WILL CONTINUE TO SLIDE EASTWARD OVERNIGHT.
A LARGE AREA OF HIGH PRESSURE IS DRIFTING EASTWARD OVER THE SUBTROPICAL ATLANTIC THIS EVENING. WITH THE LINGERING SEA BREEZE TROUGH HOLDING ON A BUT LONGER INTO THE EVENING OVER THE FLORIDA PENINSULA. THE RIDGE OFF THE CAROLINA COAST HAS WEAKENED SLIGHTLY AND THE THERMAL TROUGH ACROSS FLORIDA. COMBINED WITH A MID LATITUDE TROUGH CROSSING THE GREAT LAKE. WITH THE LOWER WIND SPEEDS OBSERVED IN THE SOUNDING AND THROUGH SURFACE OBSERVATIONS. THE LARGE AREA OF HIGH PRESSURE OFF THE CAROLINA COAST IS WEAKENING TONIGHT. THE LOW TEMPERATURE IN KEY WEST DIPPED TO 54 DEGREES.
A LOW PRESSURE SYSTEM WAS MOVING INTO NORTHERN CALIFORNIA THIS AFTERNOON AND EVENING. THE LOW WILL CONTINUE MOVING INTO THE GREAT BASIN LATE TONIGHT AND ON WEDNESDAY.
A RIDGE OF HIGH PRESSURE IS LOCATED ACROSS THE ATLANTIC WITH SOUTHERLY FLOW AT THE SURFACE CLOSER TO HOME. LIGHT SOUTHERLY FLOW AND DEWPOINTS IN THE LOW TO MID 60S TONIGHT WILL LEAD TO THE POSSIBILITY OF FOG FORMATION ONCE AGAIN. UPPER LEVEL HEIGHTS WILL INCREASE ACROSS THE SOUTHEAST TOMORROW AS A RIDGE BUILDS IN. AN UPPER LEVEL TROUGH WILL MOVE ACROSS THE ROCKY MOUNTAINS LEADING TO LEE CYCLOGENESIS.
HIGH PRESSURE TO THE NORTHEAST WILL KEEP GENERALLY EAST TO SOUTHEAST WINDS IN PLACE THROUGH THE NEXT SEVERAL DAYS WITH THE SEA BREEZE TURNING WINDS ONSHORE NEAR THE COAST EACH AFTERNOON.
HOWEVER WITH UPPER LOW CURRENTLY OFF THE CALIFORNIA COAST MOVING INTO THE CENTRAL ROCKIES DURING THE DAY.
WEAK HIGH PRESSURE WILL REMAIN OVER THE ZONES TONIGHT. ZELZER /ISSUED 217 PM MDT TUE APR 7 2015/ TUESDAY THROUGH WEDNESDAY NEAR SEASONAL TEMPERATURES WILL REMAIN OVER THE AREA FOR THE NEAR TERM AS A WEAK UPPER LEVEL RIDGE REMAINS IN THE AREA. WITH A CLOSED LOW MOVING ACROSS THE GREAT BASIN.
1136 PM CDT TUE APR 7 2015 SOUTHWEST FLOW ALOFT AHEAD OF A POTENT UPPER LEVEL LOW PRESSURE SYSTEM NOW MOVING ONTO THE WEST COAST. BUT THE LOW IS PULLING SOME OF THE MOISTURE INTO EASTERN NEBRASKA AND WRAPPING IT BACK WEST INTO OUR OUR REGION. SO EXPECT THE LOW CLOUDS. THE WEST COAST UPPER LEVEL LOW WILL BE APPROACHING FROM THE WEST BY LATE WEDNESDAY AFTERNOON. THE BETTER CHANCES FOR RAIN HOWEVER SHOULD HOLD OFF UNTIL WEDNESDAY NIGHT WHEN THE UPPER LOW TRACKS OVER OR VERY NEAR THE AREA.
UPPER LEVEL LOW NOW OVER CENTRAL CALIFORNIA WILL CONTINUE EAST INTO THE GREAT BASIN TONIGHT.
THIS MORNINGS COLD FRONT HAS PUSHED WELL EAST OF THE FORECAST AREA AND COLD AIR IS NOW FILLING IN BEHIND IT. BOTH MODELS QUICKLY BUILD IN A RIDGE OF HIGH PRESSURE BRINGING AN END TO PRECIPITATION IN OUR AREA THROUGH AT LEAST THIS WEEKEND. BUT IN GENERAL SHOWERS ARE STARTING TO WIND DOWN AS THE UPPER LOW MOVES FURTHER EAST AND THE AIRMASS STABILIZES. SFO BRIDGE APPROACH.
MAIN FEATURES FROM UPPER LEVEL CHARTS THIS MORNING INCLUDED A TROUGH OVER THE WESTERN UNITED STATES AND SOUTHWEST FLOW OVER THE PLAINS.
WEDNESDAY IS STILL LOOKING TO BE WARM WITH HIGHS IN THE LOWER TO MIDDLE 80S. A WEAK RIDGE WILL BUILD ACROSS THE CWA TONIGHT AND WEDNESDAY WHICH WILL KEEP PCPN OUT OF THE TAFS. 07 /ISSUED 249 PM CDT TUE APR 7 2015/ CURRENT WATER VAPOR IMAGERY SHOWS A FAIRLY STRONG UPPER LEVEL LOW JUST OFF OF THE NW COAST. WEAK UPPER LEVEL RIDGING CONTINUES TO BUILD IN ACROSS THE SOUTHEAST. THE AXIS OF THE UPPER LEVEL RIDGE WILL CONTINUE TO SLIDE EASTWARD OVERNIGHT.
ALONG WITH THE LOW CLOUDS. TEMPERATURES WILL BEGIN A GRADUAL REBOUND INTO THE LOWER 60S BUT DROPPED HIGH TEMPS ACROSS THE PLAINS A FEW DEGREES DUE TO THE SLOW START. THE SW WINDS WILL INCREASE ACROSS THE MOUNTAINS AND SOUTHERN PLAINS THROUGH THE DAY WITH HELP FROM AN APPROACHING UPPER TROUGH UPSTREAM AND A JET OVERHEAD. THE MODELS ARE ALL PRETTY CONSISTENT REGARDING THE TROUGH CROSSING THE CWA WEDNESDAY NIGHT. MODEST QG ASCENT IS EXPECTED THROUGH AROUND 06Z WITH STRONG SUBSIDENCE OVERSPREADING THE AREA BEHIND THE TROUGH THEREAFTER.
STRONG DYNAMIC FORCING ALOFT WILL MIX WINDS TO THE SURFACE QUICKLY AS LEAD WAVE PUSHES EAST OUT OF UPPER LEVEL LOW IN THE CENTRAL PLAINS.
935 PM PDT TUE APR 7 2015 A COLD FRONT WILL BRING AREAS OF LIGHT PRECIPITATION TONIGHT BEFORE EXITING EAST OF THE AREA EARLY WEDNESDAY MORNING.
HRRR has backed off on storm development overnight, and given the EML in place and diurnal cooling in the low levels that is not surprising. Tornadic threat should be on the lower end as surface winds veer.
THE UPPER LOW CURRENTLY OFF THE COAST IN NORTHWEST CAL IS MOVING SOUTH. LATER SHIFTS MAY NEED TO TAKE ANOTHER LOOK AT THIS AND ADJUST AMOUNTS HIGHER IF LATER MODEL RUNS CONTINUE TO SHOW THE HIGHER QPF AMOUNTS.
639 PM CDT TUE APR 7 2015 SOUTHWEST FLOW ALOFT AHEAD OF A POTENT UPPER LEVEL LOW PRESSURE SYSTEM NOW MOVING ONTO THE WEST COAST. BUT THE LOW IS PULLING SOME OF THE MOISTURE INTO EASTERN NEBRASKA AND WRAPPING IT BACK WEST INTO OUR OUR REGION. SO EXPECT THE LOW CLOUDS. THE WEST COAST UPPER LEVEL LOW WILL BE APPROACHING FROM THE WEST BY LATE WEDNESDAY AFTERNOON. THE BETTER CHANCES FOR RAIN HOWEVER SHOULD HOLD OFF UNTIL WEDNESDAY NIGHT WHEN THE UPPER LOW TRACKS OVER OR VERY NEAR THE AREA.
WHILE HIGH PRESSURE OVER THE CANADIAN MARITIMES NOSES SOUTHWESTWARD ACROSS THE MID ATLANTIC REGION.
MIDDLE TN REMAINS ENTRENCHED IN A MOIST WARM SECTOR WITH WEAK RIDGING OVERNIGHT. /ISSUED 332 PM CDT TUE APR 7 2015/ WARM MOIST AIR HAS SETTLED OVER MIDDLE TN THANKS TO STRONG SOUTHWEST FLOW NOT ONLY IN THE LOW LEVELS BUT AT THE SURFACE AS WELL. THIS PATTERN WILL LARGELY REMAIN UNCHANGED OVER THE NEXT FEW DAYS ALLOWING FOR THE MOISTURE TO STICK AROUND AS WELL AS WARMER TEMPERATURES.
A WARM FRONT SETS UP ACROSS SRN NE/IA. AS THE LOW MOVES EAST TOWARD THE NE/IA BORDER. WARMER AIR STAYS SOUTH OF THE FSD CWA. HOWEVER AS THE H5 TROF SWINGS THROUGH. DRAGGING A COLD FRONT THROUGH. EXPECT LINGERING SHOWER ACTIVITY BEHIND THE FRONT UNTIL THURS NIGHT AS HIGH PRESSURE TO THE WEST EDGES THIS SYSTEM ON THROUGH.
UPPER RIDGE STRENGTHENS OVER MIDDLE TENNESSEE ON WEDNESDAY AND I WOULD THINK THIS WOULD MEAN FEW SHOWERS/THUNDERSTORMS DURING THE DAY.
AXIS OF LOW LEVEL RIDGE WILL EXTEND FROM NEAR THE NORTH GULF COAST ACROSS THE NORTHERN PENINSULA AND INTO THE ATLANTIC.
ISOLATED CONVECTION BEGINNING TO DEVELOP ALONG THE HIGHER TERRAIN IN MEXICO.
A GENERALLY ZONAL FLOW PATTERN ALOFT PERSISTS ACROSS THE CENTRAL GULF COAST REGION THIS AFTERNOON TO THE NORTH OF AN UPPER LEVEL RIDGING OVER THE EASTERN GULF OF MEXICO. MILD OVERNIGHT TEMPERATURES ARE EXPECTED TONIGHT WITH LOWS IN THE LOWER TO MID 60S. HIGHS WEDNESDAY WILL AVERAGE WELL ABOVE NORMAL IN THE LOWER TO MID 80S. POSSIBLY UPPER 80S IN THE TYPICALLY-WARMER LOCATIONS OF THE CWFA. AS AN UPPER TROUGH APPROACHES THE CENTRAL PLAINS STATES. THE NORTHEAST EXTENT OF A RIDGE OF HIGH PRESSURE AT HIGH LEVELS AMPLIFIES FROM THE SOUTHWEST GULF. THE AMPLIFYING RIDGE LOOKS TO ACT AS A SHIELD.
A WEAK RIDGE WILL BUILD ACROSS THE CWA TONIGHT AND WEDNESDAY WHICH WILL KEEP PCPN OUT OF THE TAFS. WEDNESDAY IS STILL LOOKING TO BE WARM WITH HIGHS IN THE LOWER TO MIDDLE 80S.
AT 8 PM MDT UPPER LOW WAS IN NERN CALIF AND MOVING EWD. THE UPPER LOW HAS CONSISTENTLY BEEN FORECAST TO MOVE DUE EAST ALONG 40N TONIGHT AND ACROSS NRN UTAH/SERN IDAHO EARLY WEDNESDAY AND THEN INTO WYOMING. WIDESPREAD SHOWERS WITH AREAS OF MOUNTAIN OBSCURATION AND LOCAL IFR CONDITIONS THROUGH WEDNESDAY MORNING AS A LOW PRESSURE SYSTEM MOVES EAST ACROSS NORTHERN NEVADA INTO SOUTHEAST IDAHO.
THIS WILL LEAD TO WARMER THAN NORMAL TEMPERATURES OVERNIGHT INCLUDING MORNING LOWS IN THE MID 60S AT MOST SITES. DESPITE THE WARMER TEMPERATURES AND HIGHER MOISTURE. RIDGING SURFACE AND ALOFT IS EXPECTED TO LIMIT CONVECTION AND THE DRY WEATHER TONIGHT SHOULD LAST THROUGH WEDNESDAY NIGHT.
A cluster of storms stretching from the lower Wabash River Valley to the Mo Bootheel will slide into our CWA over the next few hours and into the evening. Expect a relative lull, through the overnight where min Ts will fall into the low and mid 60s.
THE HIGHEST CHANCES WILL BE IN THE NORTH CLOSER TO THE BETTER FORCING AS THE UPPER WAVE MOVES INTO THE CENTRAL PLAINS.
530 PM MDT TUE APR 7 2015 UPDATED AVIATION DISCUSSION TUESDAY THROUGH WEDNESDAY NEAR SEASONAL TEMPERATURES WILL REMAIN OVER THE AREA FOR THE NEAR TERM AS A WEAK UPPER LEVEL RIDGE REMAINS IN THE AREA. WITH A CLOSED LOW MOVING ACROSS THE GREAT BASIN.
LOW PRESSURE MOVING SLOWLY EASTWARD ACROSS THE GREAT BASIN WILL BRING BELOW NORMAL TEMPERATURES AND LOCALLY GUSTY WINDS TO THE REGION TODAY.
DRY SWLY FLOW AHEAD OF A CLOSED LOW OVER THE GREAT BASIN WILL PROMOTE THE DRYLINE ADVANCING FROM WEST TO EAST ACROSS THE FCST AREA WITH BREEZY TO WINDY CONDITIONS BOTH SIDES OF IT. IS GENERALLY THICK CIRRUS SHIELD DEVELOPING DOWNSTREAM FROM A SHORT WAVE TROUGH EJECTING OVER NWRN MEXICO. FORCING AND DEEPER MOISTURE AHEAD OF THE TROUGH OVER MEXICO MAY LEAD TO SLIGHTLY ENHANCED PRECIP CHANCES THIS AFTN AND EVENING.
MAYBE A BIT COOLER ON THURSDAY EASTERN AREAS WITH MORE CLOUDS BUT NOT BY MUCH.
A WEAK UPPER IMPULSE RIDING OVER GULF RIDGE WILL AID THE DEVELOPMENT OF INLAND SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS BY MID AFTERNOON. THURSDAY WILL BE MOSTLY DRY AND WARM AS MID LEVEL RIDGE BUILDS IN ACROSS FL. WARM DAYS AND MILD NIGHTS WILL CONTINUE AS HIGH PRESSURE RIDGE HOLDS IN PLACE.
456 AM CDT WED APR 8 2015 UPPER LOW CURRENTLY CENTERED OVER EXTREME NORTHERN CALIFORNIA WILL MOVE EAST THROUGH THE GREAT BASIN THEN ACROSS THE ROCKIES TONIGHT INTO THE CENTRAL PLAINS THURSDAY. COLD FRONT ASSOCIATED WITH THAT SYSTEM WILL MOVE THROUGH EASTERN OKLAHOMA AND WEST CENTRAL AND NORTHWEST ARKANSAS THURSDAY AFTERNOON AND EVENING. SOUTHEAST OKLAHOMA AND WEST CENTRAL AND NORTHWEST ARKANSAS MOST VULNERABLE FOR SIGNIFICANT THUNDER THURSDAY AS THE COLD FRONT MOVES THROUGH.
608 AM EDT WED APR 8 2015 HIGH PRESSURE OVER QUEBEC WILL SLIDE EAST INTO THE MARITIMES BY AFTERNOON. A WARM FRONT WILL LIFT NORTH INTO THE AREA ON THURSDAY. WHILE LOW PRESSURE APPROACHES FROM THE WEST.
GUSTY WINDS WILL CONTINUE THROUGH WEDNESDAY AS A TROUGH AND ASSOCIATED COLD FRONT MOVES ACROSS THE AREA.
SHOWERS ARE SLOWLY MIGRATING EST AS THE UPPER LOW CONTINUES TO MOVE EAST OUT OF THE REGION. AN UPPER LEVEL RIDGE BUILDS OVER THE REGION TONIGHT WITH WEAK OFFSHORE FLOW OVER THE WEST SIDE BRINGING SOME CLEARING EARLY.
IT WAS MUGGY AND MILD ACROSS THE MID STATE EARLY THIS MORNING, WITH 3 AM TEMPS IN THE LOWER TO MIDDLE 60S.
THE UPPER LOW SWINGING EAST THROUGH NRN NV AS FORECAST. AS THE UPPER LOW MOVES EAST. OUR UPPER-LEVEL FLOW WILL BECOME NWERLY AND A COLD FRONT WILL MOVE THROUGH EARLY TODAY. THE CHANCE OF PRECIP WILL DECREASE SHARPLY TONIGHT BEFORE INCREASING AGAIN THU AFTERNOON AS A WEAK SHORT WAVE TROUGH IMPACTS MAINLY OUR NRN AREAS.
OTHER SHOWERS WILL LIKELY DEVELOP OVER THE HIGHER TERRAIN TO OUR SOUTH ALONG THE SRN EXTENT OF OUR FRONTAL BOUNDARY AND THEN LIFT NWD. BRIEF BREAK BEFORE THE UPPER LOW APPROACHES THE SRN ID/NRN UT AREA WEDNESDAY MORNING WITH THE NEXT CYCLONIC NOSE OF THE JET MOVING INTO THE FAR SOUTH ALONG WITH INCREASING QG FORCING THAT LIFTS NORTH DURING THE DAY. AIRMASS CONTINUES TO COOL AS THE UPPER LOW MOVES CLOSER AND THEN ADD IN CONVECTIVE SHOWERS WHICH WILL HELP COOL THE COLUMN WHICH WILL LIKELY LEAD TO MORE SNOW SHOWERS THAN RAIN SHOWERS AS THE AFTERNOON WEARS ON IN CENTRAL WYO. ISSUED AN SPS FOR SEVERAL AREAS INDICATING 3-5 INCHES IN THE MOUNTAINS ON WED/WED EVE WITH A SKIFF TO 3 INCHES ACROSS THE LOWER ELEVATIONS OF THE CENTRAL AND SOUTH.
359 AM CDT WED APR 8 2015 WATER VAPOR SATELLITE IMAGERY INDICATES THAT AN UPPER LEVEL LOW WAS CENTERED OVER NORTHWESTERN NEVADA WHILE A JET STREAK WAS APPROACHING BAJA CALIFORNIA. THE UPPER LEVEL LOW CURRENTLY /AS OF 330 AM/ OVER NORTHWESTERN NEVADA WILL OPEN UP AS IT MOVES EAST AND NORTHEAST ACROSS THE GREAT BASIN TODAY. AS THE TROUGH MOVES FARTHER EAST.
UNUSUALLY WARM CONDITIONS PERSIST AGAIN TODAY AS UPPER LEVEL RIDGE CENTERED NEAR THE BAY OF CAMPECHE ENCOMPASSES THE ENTIRE SOUTHEASTERN US. NORMAL HIGHS FOR THIS TIME OF YEAR ARE IN THE UPPER 70S AND LOOKING AT ABOUT 10 DEGREES WARMER THAN THAT FOR TODAY. THE MISSISSIPPI COAST WILL BE ON THE COOLER SIDE DUE TO SEA BREEZE INFLUENCES BUT STILL IN THE LOWER 80S.
325 AM CDT WED APR 8 2015 COLD FRONT HAD PUSHED WELL SOUTH OF THE AREA THROUGH 07Z. THUNDERSTORMS HAD ALSO DEVELOPED IN NORTHEAST KANSAS NORTH OF THE FRONT WITHIN THE LOW LEVEL JET AXIS WHERE STRONG WARM AIR ADVECTION AS NOTED. LOW PRESSURE MOVES ALONG THE STALLED BOUNDARY TONIGHT. AS WINDS TURN TO THE NORTH ON THE BACK SIDE OF THE LOW PRESSURE CENTER. THE AREA REMAINS ON THE WEST SIDE OF THE LOW ON THURSDAY WHICH WILL RESULT IN ANOTHER DAY SIMILAR TO TODAY TEMPERATURE WISE. DRY AND WARMER WEATHER EXPECTED FOR THE END OF THE WORK WEEK WITH SUNSHINE AND TEMPS BACK TO JUST ABOVE NORMAL.
H5 RIDGE CONTINUES TO HOLD ACROSS THE GULF AND SE TEXAS. BUT WILL BE MORE FLATTENED BY THE TROUGH MOVING ASHORE IN NORTHERN CALIFORNIA. LOW TONIGHT ONLY FALL TO THE LOWER 70S AND REMAIN HUMID.
WITH THE HIGHEST SPEEDS EXPECTED ACROSS E TX/SE OK. UPPER LOW OVER UT WILL CONTINUE TO PUSH EWD INTO THE PLAINS BY TONIGHT. DRAGGING A COLD FRONT INTO W TX.
WARM AND HUMID MORNING WITH AVERAGE REGIONAL MINIMUM TEMPERATURES IN THE LOWER 70S UNDER A SOUTH BREEZE. -CENTERED HIGH PRESSURE.
COLD FRONT CROSSES AT THE END OF THE WORK WEEK. A BREEZY AND WARM NIGHT THURSDAY NIGHT WITH THE COLD FRONT MAKING AN APPROACH ON OUR WESTERN FLANK AFTER MIDNIGHT.
THE LOW THEN TRACKS NORTHEASTWARD. THE PRECIPITATION WILL COME TO AN END BY THURSDAY EVENING AS THE SYSTEM PUSHES FURTHER AWAY FROM THE REGION AND HIGH PRESSURE SETTLES IN. THURSDAY WILL BE TRICKY AS WARMER AIR TRIES TO MOVE IN BUT CLOUDS AND PRECIPITATION WILL LIKELY HINDER WARMING SOME.
AN UPPER LEVEL TROUGH CURRENTLY OVER THE GREAT BASIN MOVES ACROSS THE NORTHERN PLAINS FORCING THE DRYLINE EAST INTO THE EDWARDS PLATEAU AND POSSIBLY FAR NORTHERN HILL COUNTRY ON THURSDAY.
SOME HEIGHT FALLS WILL GET INTO THE MIX LATE IN THE PERIOD ON THURSDAY AS A LARGER TROUGH SWEEPS EAST AND INTO THE UPPER MIDWEST. THE KEY TO THIS UNSETTLED PATTERN WILL BE THE SMALLER FEATURES THAT THE HIGHER RESOLUTION MODELS HAVE A BETTER CHANCE OF CATCHING.
336 AM EDT WED APR 8 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND WILL MOVE EAST INTO THE MARITIMES THURSDAY.
623 AM EDT WED APR 8 2015 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND WILL MOVE EAST INTO THE MARITIMES THURSDAY.
352 AM CDT WED APR 8 2015 LATEST WATER VAPOR SATELLITE IMAGERY SHOWING SOUTHWESTERLY FLOW ALOFT ACROSS CENTRAL PLAIN STATES AND UPPER LEVEL TROUGH OVER THE WESTERN UNITED STATES. LIFT AND MOISTURE ASSOCIATED WITH THE OPEN UPPER LEVEL WAVE WOULD QUICKLY MOVE EAST BEFORE THE ATMOSPHERE COLUMN COOLS DOWN TO BELOW OR AT FREEZING.
A GREAT DEAL MORE SUNSHINE WOULD BE THE REASON FOR THE WARMER HIGHS.
A LOW PRESSURE SYSTEM WAS MOVING INTO NEVADA THIS MORNING AND WILL CONTINUE TO MOVE INTO THE GREAT BASIN TODAY. AN UPPER TROUGH WILL LINGER INLAND OVER WASHINGTON AND A GOOD PART OF OREGON THAT WILL CONTINUE TO PRODUCE SOME SHOWERS AND POSSIBLY AN AFTERNOON OR EVENING THUNDERSTORM.
528 AM EDT WED APR 8 2015 A NEARLY STATIONARY FRONT JUST SOUTH OF PENNSYLVANIA WILL COMBINE WITH STRONG HIGH PRESSURE OVER QUEBEC CANADA.
AN UPPER TROUGH WILL REMAIN OVER THE REGION TODAY. A LOW CENTER AT THE BASE OF THE TROUGH WILL WEAKEN AND SLIDE EAST TO WYOMING TODAY. THIS LOW HAS BEEN SPREADING MOISTURE NORTH INTO CENTRAL AND NORTHEAST OREGON EARLY THIS MORNING.
IMPRESSIVE 850 MB THETA-E RIDGE AXIS WILL ALSO BE ALONG THE WYOMING AND NEBRASKA STATE LINE BY LATE AFTERNOON.
AN UPPER RIDGE WILL BRING MOSTLY SUNNY AND WARMER WEATHER TODAY AND THURSDAY.
BEFORE MOVING NORTHEAST ACROSS PENNSYLVANIA AS A WARM FRONT ON THURSDAY. HIGH PRESSURE OVER THE CANADIAN MARITIMES WILL SUPPLY A NORTHEAST FLOW OF COOL.
HIGH PRESSURE OVER THE EASTERN PACIFIC WILL BUILD IN OVER NORTHERN CALIFORNIA FROM LATE TONIGHT THROUGH WEDNESDAY NIGHT.
331 AM EDT WED APR 8 2015 HIGH PRESSURE OVER QUEBEC WILL SLIDE EAST INTO THE MARITIMES BY AFTERNOON. A WARM FRONT WILL LIFT NORTH INTO THE AREA ON THURSDAY. WHILE LOW PRESSURE APPROACHES FROM THE WEST.
TODAY WILL BE PARTLY CLOUDY WITH COOLER THAN NORMAL TEMPERATURES. A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE DISTRICT THIS WEEK AND BRING DRY WEATHER WITH A DAY TO DAY WARMING TREND THROUGH THE WEEKEND. AN UPPER LOW OVER NEVADA WILL CONTINUE TO SHIFT SLOWLY EAST INTO UTAH. UPPER LEVEL HIGH PRESSURE WILL BUILD OVER THE REGION ON THURSDAY.
SO WE WILL LIKELY MAINTAIN THE LOW-END MVFR CIG FORECAST AT ALL LOCATIONS THIS MORNING WITH IMPROVING CONDITIONS AROUND MID DAY. /ISSUED 359 AM CDT WED APR 8 2015/ WATER VAPOR SATELLITE IMAGERY INDICATES THAT AN UPPER LEVEL LOW WAS CENTERED OVER NORTHWESTERN NEVADA WHILE A JET STREAK WAS APPROACHING BAJA CALIFORNIA. THE UPPER LEVEL LOW CURRENTLY /AS OF 330 AM/ OVER NORTHWESTERN NEVADA WILL OPEN UP AS IT MOVES EAST AND NORTHEAST ACROSS THE GREAT BASIN TODAY. AS THE UPPER LEVEL TROUGH MOVES EAST.
WITH UPPER LEVEL RIDGING IN PLACE IT WILL BE A DRY AND WARM DAY ACROSS CENTRAL ALABAMA BUT SOUTHERLY SFC FLOW WILL CONTINUE.
AND THURSDAY LIGHT RAIN AND FREEZING RAIN WILL END THIS MORNING AS LOW LEVEL CONVERGENCE AND WARM ADVECTION DIMINISH. THE BREAK IN THE PRECIPITATION WILL LAST AT LEAST THROUGH THE EVENING HOURS IN MOST PLACES UNTIL ELEVATED PRECIPITATION BEGINS WELL AHEAD OF A SURFACE CYCLONE LIFTING NORTHEAST FRO THE CENTRAL PLAINS STATES. LOW LEVEL DRY EASTERLY FLOW MAY BE SUFFICIENT AGAIN FOR SURFACE TEMPERATURES TO DROP TO FREEZING OVER NORTHCENTRAL WISCONSIN AND PRODUCE FREEZING RAIN LATER TONIGHT. THE SURFACE CYCLONE SHOULD MOVE ACROSS IOWA INTO SOUTHERN WISCONSIN THURSDAY BRINGING RAIN TO NORTHERN WISCONSIN AND ELEVATED THUNDERSTORMS TO THE CENTRAL PART OF THE STATE.
343 AM MDT WED APR 8 2015 LATEST SATELLITE AND UPPER AIR ANALYSIS INDICATE A CLOSED LOW MOVING INTO THE WEST COAST WITH A BAND OF CLOUD COVER AHEAD OF IT. NORTHWEST UPPER LEVEL FLOW AS OVER THE PLAINS WITH AN UPPER LEVEL SHORT WAVE TROUGH MOVING OFF THE ROCKIES. A WARM FRONT WAS SOUTH OF THE AREA. BUT WILL PROGRESS MORE SLOWLY DUE TO THE APPROACHING CLOSED UPPER LEVEL TROUGH. MEANWHILE THE WARM FRONT WILL MOVE BACK INTO THE SOUTHWEST PART OF THE AREA.
WITH SURFACE TROF GAINING STRENGTH ACROSS MONTANA AND WYOMING. UPPER LOW COMES FULLY ONSHORE ACROSS THE WEST TONIGHT. PRECIP CHANCES INCREASE LATE TONIGHT AND INTO WEDNESDAY AS THE UPPER LOW CROSSES THE CENTRAL ROCKIES. BOTH THE ECM AND GFS STILL KEEP THE LOW AS A PROGRESSIVE OPEN WAVE AS IT MOVES INTO THE CENTRAL PLAINS.
UPPER RIDGE OVER THE GULF OF MEXICO WILL AMPLIFY TODAY WITH A RIDGE AXIS EXTENDING INTO THE MID-ATLANTIC STATES.
A FEW OBSERVATIONS REPORTING VERY LIGHT RAIN OVER THE FAR NE PLAINS SO THE LOW POPS THIS MORNING LOOK GOOD. SURFACE COLD FRONT WILL MOVE FROM WEST TO EAST THIS EVENING OVER THE PLAINS. MAIN UPPER LEVEL FEATURE FOR NEXT 24 HOURS WILL BE THE STRONG UPPER LOW NOW OVER CENTRAL NEVADA. STRONG NORTHWEST FLOW ALOFT ON THE BACK OF THE PASSING TROUGH. TEMPERATURES THURSDAY WILL BE 10 TO 15 DEGREES COOLER OVER THE PLAINS. AND ABOUT 5 DEGREES COOLER IN THE MOUNTAINS COMPARED TO TODAY.
259 PM CST Thu Feb 12 2015 (Tonight and Friday) Quiet weather with warmer temperatures on Friday. With clearing skies, light winds, and dry low level air, temperatures will be able to drop into the 30s most areas tonight with some low lying areas able to drop to near freezing.
A RIDGE OF ARCTIC HIGH PRESSURE IS FORECAST TO BRIEFLY SETTLE OVER THE AREA TONIGHT THROUGH TOMORROW NIGHT. THIS RIDGE WILL USHER A FRIGID AIR MASS INTO THE REGION.
1143 AM CST THU FEB 12 2015 HIGH PRESSURE WILL CONTINUE TO NOSE SOUTHWARD INTO THE MISSOURI VALLEY TODAY WITH A COLD NORTHERLY WIND. THERE COULD BE ISOLATED FLURRIES ACROSS THE HIGH PLAINS TODAY AS ISENTROPIC LIFT DEVELOPS IN RESPONSE TO RETURN SOUTHERLY FLOW.
WINDS ARE EXPECTED TO GUST ABOVE 25 MPH SAT AFTERNOON IN SWRN IND AND ADJACENT PARTS OF SERN IL AND NRN KY RIGHT BEHIND THE COLD FRONT.