Aikyam-Lab/Synoptic-Bench huggingface dataset:
736 PM EST WED MAR 2 2016 BUILDING HIGH PRESSURE WILL END ANY REMAINING FLURRIES THIS EVENING. WIDESPREAD SNOW WITH GENERALLY LIGHT ACCUMULATION IS EXPECTED BY THURSDAY NIGHT WITH CROSSING LOW PRESSURE. BLDG HIGH PRESSURE SHOULD END THE SCT FLURRIES THIS EVE. CLOUDS SHOULD INCRS AGAIN LT TONIGHT AHD OF LOW PRESSURE ADVANCING ACRS THE MIDWEST.
1228 AM EST THU MAR 3 2016 BUILDING HIGH PRESSURE WILL END ANY REMAINING FLURRIES THIS EVENING. WIDESPREAD SNOW WITH GENERALLY LIGHT ACCUMULATION IS EXPECTED BY THURSDAY NIGHT WITH CROSSING LOW PRESSURE. BLDG HIGH PRESSURE SHOULD END THE SCT FLURRIES THIS EVE. CLOUDS SHOULD INCRS AGAIN LT TONIGHT AHD OF LOW PRESSURE ADVANCING ACRS THE MIDWEST.
1221 AM EST THU MAR 3 2016 WINDS WILL DIMINISH TONIGHT AND ANY MOUNTAIN SNOW SHOWERS WILL COME TO AN END AS COLD HIGH PRESSURE BUILDS SOUTHEAST FROM CANADA. THIS HIGH WILL BRING DRY WEATHER TO THE NORTH COUNTRY THROUGH THE WEEKEND.
922 PM EST WED MAR 2 2016 A LOW PRESSURE SYSTEM WILL SWING SOUTH OF THE AREA TOMORROW.
HIGH PRESSURE CONTINUES TO PROVIDE DRY AND STABLE CONDITIONS, THE EXCEPTION BEING THE AREA AROUND GLACIER NATIONAL PARK THAT MAY SEE ISOLATED SNOW SHOWERS OVERNIGHT. HIGH PRESSURE ALOFT OVER WESTERN MONTANA CONTINUES TO PROVIDE DRY AND STABLE CONDITIONS.
16 RAIN WILL QUICKLY SPREAD FROM WEST TO EAST ACROSS THE AREA ON THURSDAY AS A SHORT WAVE TROF PASSES THRU THE AREA.
636 PM EST WED MAR 2 2016 WINDS WILL DIMINISH TONIGHT AND ANY MOUNTAIN SNOW SHOWERS WILL COME TO AN END AS COLD HIGH PRESSURE BUILDS SOUTHEAST FROM CANADA. THIS HIGH WILL BRING DRY WEATHER TO THE NORTH COUNTRY THROUGH THE WEEKEND.
641 PM EST WED MAR 2 2016 HIGH PRESSURE BUILDING INTO THE AREA WILL MOVE EAST OVERNIGHT AND ALLOW LOW PRESSURE TO MOVE INTO THE MID MISSISSIPPI VALLEY. THE LOW WILL CONTINUE EAST THURSDAY AND THURSDAY NIGHT THROUGH THE TENNESSEE VALLEY.
532 PM CST WED MAR 2 2016 18Z SURFACE ANALYSIS SHOWED ELONGATED AREA OF LOW PRESSURE EXTENDING SOUTH ON THE HIGH PLAINS FROM EASTERN MONTANA SOUTHEAST INTO WESTERN NEBRASKA. WARM FRONT LIFTED NORTHEAST WHERE COOLER TEMPERATURE READINGS NORTH OF A LINE FROM VALENTINE TO BROKEN BOW. A RIDGE WILL BE BUILDING ACROSS THE ROCKIES.
Slightly cooler temperatures but continued periodic storm systems will persist into the new work week.
Slightly cooler temperatures but continued periodic storm systems will persist into the new work week. RJ 00Z TAFs: A weak warm front will bring increasing mid and high clouds to the forecast area through 06Z. A trailing cold front will cross the Cascades tonight and pass through KEAT around 06Z and through the eastern TAf sites between 10Z and 15Z.
A MOIST NORTHWEST FLOW OVER THE AREA IN THE WAKE AN UPPER LOW WILL GRADUALLY DRY OUT TONIGHT THROUGH SATURDAY.
827 PM EST FRI JAN 8 2016 A WEAK LOW PRESSURE SYSTEM WILL TRACK WEST OF PENNSYLVANIA THROUGH THE GREAT LAKES LATE TODAY AND TONIGHT. A LIGHT COATING OF FREEZING RAIN IS POSSIBLE OVER THE CENTRAL AND NORTHEAST MOUNTAINS.
646 PM EST FRI JAN 8 2016 HIGH PRESSURE WILL RIDGE INTO THE FORECAST AREA FROM THE NORTH WITH A PRESSURE TROUGH JUST OFF THE COAST THROUGH SATURDAY. A DEVELOPING WARM FRONT WILL BE JUST SOUTH OF THE FORECAST AREA SATURDAY. AN APPROACHING COLD FRONT WILL MOVE THROUGH THE AREA SATURDAY NIGHT.
CHATTANOOGA AIRPORT, TN 45 54 37 41 / 10 70 80 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 39 55 38 40 / 0 50 80 40 OAK RIDGE, TN 40 54 37 40 / 0 60 90 50 TRI CITIES AIRPORT, TN 35 54 41 43 / 0 30 90 50.
339 PM MST FRI JAN 8 2016 SNOW HAS PRETTY MUCH TAPERED OFF TO FLURRIES OVER THE CWA THIS AFTERNOON AND EXPECT THIS TREND TO CONTINUE THROUGH THIS EVENING WITH SNOW ENDING OVER ALL BUT THE HIGHER MTNS BY LATE THIS EVENING. WEAK IMPULSES RIDING SOUTHEAST IN THE FLOW WILL BRING SOME SNOW SHOWERS TO THE HIGHER MTNS AT TIMES.
/ISSUED 326 PM CST FRI JAN 8 2016/ A COLD FRONT STRETCHES FROM NEAR KIRKSVILLE MISSOURI TO DALLAS- FORT WORTH TEXAS AT THIS TIME. THE FRONT IS BECOMING STATIONARY AS A LOW PRESSURE CENTER IS IN THE PROCESS OF DEVELOPING NEAR DALLAS. A SECONDARY WARM FRONT EXTENDS OUT FROM THIS DEVELOPING LOW ACROSS LOUISIANA. THE LOW AND ASSOCIATED WARM FRONT WILL TRACK NORTHWARD TONIGHT INTO SATURDAY. EXPECT LOW CLOUDS TO BREAK UP EAST OF THE MISSISSIPPI RIVER BY THE AFTERNOON ON SATURDAY AS THE LOW PRESSURE MOVES INTO EASTERN ARKANSAS. THE SECONDARY WARM FRONT WILL HELP TO BRING AN INCREASE IN MOISTURE AND WILL HELP ENHANCE HELICITY. THE COLD FRONT WILL CROSS THE MISSISSIPPI RIVER ROUGHLY AROUND 00Z.
AS STRONG COLD FRONT WILL ENTER THE REGION SATURDAY. A WARM FRONT WILL LIFT NORTH AND BRING RAIN CHANCES BACK TO THE STATE. TEMPERATURES WILL FALL BEHIND THE COLD FRONT DURING THE AFTERNOON HOURS. AS THE UPPER LOW MOVES ACROSS THE STATE. MAINLY CONFINED TO GRASSY AREAS AND ELEVATED ROADWAYS AND BRIDGES. ACROSS THE HIGHER TERRAIN OF WESTERN ARKANSAS.
UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEKEND AS LOW PRESSURE OVER WISCONSIN MOVES NORTHEAST AND ANOTHER AREA OF LOW PRESSURE OVER TEXAS MOVES TO THE OHIO VALLEY SATURDAY EVENING AND TRACKS ACROSS SOUTHEAST INDIANA INTO NORTHWEST OHIO SATURDAY NIGHT.
WINDS SHIFTING TO THE WEST/NORTHWEST AHEAD OF AN APPROACHING COLD FRONT TONIGHT WILL HELP DISSIPATE THE DENSE FOG THAT DEVELOPS. THE PASSAGE OF THE STORM SYSTEM/UPPER TROF THIS EVENING WILL ALSO DRAG A STRONG COLD FRONT ACROSS SE TX OVERNIGHT AND EARLY SAT MORNING. THE RIDGING WITH WILL BE SHORT LIVED AS WE SEE THE RETURN OF THE SUBTROPICAL JET OVER THE STATE WITH ANOTHER UPPER TROF DIGGING INTO NRN MEXICO. BEFORE POPS SPREAD FURTHER INLAND (LATE WEDS/THUR) AS THE UPPER TROF MOVES IN FROM THE WEST. 41 PATCHY AREAS OF DENSE SEA FOG WILL REMAIN A POSSIBILITY UNTIL 1-3AM UNTIL A PREFRONTAL TROUGH PUSHES THRU THE WATERS. AHEAD OF THIS TROF. COLD FRONT ITSELF WILL MOVE INTO THE AREA EARLY SAT MORNING.
ALONG WITH POSSIBLE AREAS OF FOG AND FREEZING FOG.
WEAK LOW PRESSURE/COASTAL TROF SETTING UP OVER THE ATLC COAST WATERS HAS SET UP WEDGE OF NORTHEAST FLOW ACROSS NE FL/SE GA AND EXPECT ANOTHER NIGHT OF LOW CLOUDS WITH AREAS OF FOG. CLOSER TO THE COAST THE LOW CIGS IN THE 100-200 FT RANGE WILL PRODUCE VSBYS AROUND 1 MILE AT TIMES AND HAVE ADDED AREAS OF FOG TO THE NEARSHORE MARINE FORECAST.
UPPER LOW SPINNING NEAR LUBBOCK WILL MOVE EAST-NORTHEAST TOWARD THE RED RIVER VALLEY. BUT WILL THE LOW LEVELS BE COOL ENOUGH FOR PRECIP TO BE PRIMARILY SNOW WHEN MODERATE PRECIPITATION IS FALLING? WILL BE WATCHING THIS CLOSELY TO SEE IF THE ADVISORY MAY NEED TO BE EXPANDED SOUTHEAST A LITTLE BIT THIS EVENING OR OVERNIGHT.
Expect wind speeds to diminish and veer to the N/NW overnight as a cold front moves into the region. /issued 235 PM CST FRI JAN 8 2016/ A small but potent upper level trough is moving across New Mexico today, and will pass north of our CWA tonight. Despite a slow start, winds have been increasing in the Guadalupe Mountains the last couple of hours and strong winds are still expected this afternoon so will keep the High Wind Warning going through 7pm MT. A cold front will follow the departing upper low cooling temperatures about 10 to 15 degrees for the weekend.
CURRENT TRAJECTORY IS FOR THE LOW TO MOVE ACROSS AR AND THEN ALONG THE OH RIVER.
500 PM MST FRI JAN 8 2016 SNOW HAS PRETTY MUCH TAPERED OFF TO FLURRIES OVER THE CWA THIS AFTERNOON AND EXPECT THIS TREND TO CONTINUE THROUGH THIS EVENING WITH SNOW ENDING OVER ALL BUT THE HIGHER MTNS BY LATE THIS EVENING. WEAK IMPULSES RIDING SOUTHEAST IN THE FLOW WILL BRING SOME SNOW SHOWERS TO THE HIGHER MTNS AT TIMES.
THEY MAY REMAIN QUITE THICK AND THUS TEMPS WILL BE WARMER. WARMER THAN IF STAYED CLEAR AND COLDER IF STAYED CLOUDY. HIGH PRESSURE WILL DROP SOUTHEAST INTO WRN ND SAT AFTN AND INTO CENTRAL SOUTH DAKOTA OVERNIGHT SAT NIGHT.
AN UPPER TROUGH WILL DIG THROUGH THE MIDWEST DRIVING AN ARCTIC COLD FRONT THROUGH IOWA.
The first is currently a closed low centered near the Four Corners region, while the second is a vigorous wave diving across the Canadian Prairies. Overall the models diminish the upper low into an open wave as it phases with the larger digging wave.
526 PM CST FRI JAN 8 2016 /00Z TAFS/ Look for a cold front to bring gusty winds from the north and MVFR ceilings to West Central Texas. /issued 351 PM CST FRI JAN 8 2016/ (Tonight and Saturday) A strong upper level trough over New Mexico will move east across the Southern Plains tonight and Saturday. At the surface, a cold front will move south across the area tonight. For Saturday, the cold front will exit the area by mid morning.
THIS WILL BRING THE NEXT COLD FRONT TOWARD THE AREA LATE TONIGHT AND MOVING ACROSS THE GULF COAST DURING THE DAY ON SATURDAY. RAIN CHANCES WILL RAPIDLY INCREASE TOWARD DAYBREAK ON SATURDAY ACROSS SOUTHEAST MISSISSIPPI AS THE COLD FRONT APPROACHES FROM THE WEST. THE HIGHEST VALUES WILL BE ACROSS COASTAL LOCATIONS IN THE VICINITY OF THE WARM FRONT MOVING NORTHWARD. THE HIGHEST VALUES WILL BE SOUTH OF THE WARM FRONT ACROSS THE GULF WATERS. LOWS TONIGHT WILL RANGE FROM THE LOW 50S INLAND TO NEAR 60 ALONG THE COAST.
TONIGHT A COLD FRONT SWEEPING THROUGH THE REGION HAS INCREASED WINDS OUT OF THE NORTHWEST AND GREATLY IMPROVED THE FOGGY CONDITIONS ACROSS THE AREA. LIGHT SNOW IS SPREADING ACROSS THE FORECAST AREA WITH TEMPERATURES GRADUALLY FALLING BELOW FREEZING. WATER VAPOR SATELLITE IMAGERY THIS AFTERNOON REVEALING MID-LEVEL CLOSED LOW ALONG THE IA/IL BORDER. SURFACE ANALYSIS SHOW A RATHER ELONGATED AREAS OF LOW PRESSURE EXTENDING FROM EASTERN IA UP THROUGH WI. A SMALL SNOW CHANCE WILL PERSIST ACROSS CENTRAL WI SATURDAY EVENING ON THE NORTHWEST PERIPHERY OF ANOTHER LOW PRESSURE SYSTEM TRACKING NORTHWARD ACROSS INDIANA.
COURTESY OF A COLD FRONT. /ISSUED 348 PM CST FRI JAN 8 2016/ UPPER LEVEL LOW THAT HAS BEEN PROGGED TO MOVE IN AND PROVIDE PRECIP HAS PUSHED FURTHER SOUTH THAN MODELS ORIGINALLY FORECASTED. ALREADY IN PLACE IS A BACK DOOR PASSIVE COLD FRONT WHICH HAS BEEN ANYTHING BUT FUN THIS MORNING. THE FRONT HAS MOVED VERY SLOWLY AND SO HAS THE LOW STRATUS BEHIND THE FRONT. THE TEMPERATURE GRADIENT AHEAD AND BEHIND THE FRONT AVERAGES AROUND 15 DEGREES WITH MOST AREAS BEHIND THE FRONT BEING STEADY IN THE LOW TO MID 30S. AROUND THIS TIME THE MAIN LIFT WITH THE LOW WILL MOVE OVERHEAD AND SHOULD BE FOCUSED AROUND THE SOUTHERN TEXAS PANHANDLE.
ADDED PATCHY FOG TO THE FORECAST FOR THE LOWER ELEVATIONS WEST OF THE LARAMIE RANGE THROUGH SATURDAY MORNING. SNOW HAS PRETTY MUCH TAPERED OFF TO FLURRIES OVER THE CWA THIS AFTERNOON AND EXPECT THIS TREND TO CONTINUE THROUGH THIS EVENING WITH SNOW ENDING OVER ALL BUT THE HIGHER MTNS BY LATE THIS EVENING. WEAK IMPULSES RIDING SOUTHEAST IN THE FLOW WILL BRING SOME SNOW SHOWERS TO THE HIGHER MTNS AT TIMES.
A STG COLD FRONT WILL MOVE ACROSS AREA MID TO LATE MORNING ON SATURDAY. /ISSUED 400 PM CST FRI JAN 8 2016/ SEVERE THUNDERSTORM WATCH 1 IN EFFECT UNTIL 11 PM FOR DEEP E TX IN THE LOWER TOLEDO BEND AREA AND NEAR LAKE SAM RAYBURN. THE COLD FRONT MARCHES NW TO SE ACROSS THE ARKLATEX AND NE LA AND ENDS THE RAINFALL AS WELL.
BUT THE RAIN CHANCES BEGIN TO INCREASE AGAIN FOR THE SOUTH MID DAY SATURDAY AND FOR THE NORTH SATURDAY EVENING AS A SECOND LOW PRESSURE APPROACHES FROM THE SOUTHWEST. THEN DURING SATURDAY NIGHT AS THE LOW PROGRESSES NORTHEASTWARD AND TEMPERATURES DROP THE RAIN WILL CHANGE OVER TO SNOW.
WATER VAPOR SATELLITE IMAGERY THIS AFTERNOON REVEALING MID-LEVEL CLOSED LOW ALONG THE IA/IL BORDER. SURFACE ANALYSIS SHOW A RATHER ELONGATED AREAS OF LOW PRESSURE EXTENDING FROM EASTERN IA UP THROUGH WI. A SMALL SNOW CHANCE WILL PERSIST ACROSS CENTRAL WI SATURDAY EVENING ON THE NORTHWEST PERIPHERY OF ANOTHER LOW PRESSURE SYSTEM TRACKING NORTHWARD ACROSS INDIANA.
HAVE ALSO ADDED MENTION OF FREEZING FOG ACROSS THE ENTIRE FORECAST AREA.
230 PM PST FRI JAN 8 2016 A WEAK COLD FRONT WILL BRING SHOWERS TO THE AREA SATURDAY AND SATURDAY NIGHT.
A LOW OVERCAST & NW 10 TO 20 MPH WINDS WERE HOLDING TEMPERATURES ACROSS KICT IN THE 30-40F RANGE WITH THE WARMER READINGS NO DOUBT RESIDING IN EXTREME SE KS. TONIGHT-SAT: THE WEAK MID-UPPER LOW CENTERED OVER NORTHERN NM WILL PUSH E OVER THE TX PANHANDLE THIS EVENING THEN TRANSITION INTO A BROAD SHORT WAVE AS IT CROSSES THE RED RIVER VALLEY LATER TONIGHT.
410 PM MST FRI JAN 8 2016 A MORE AMPLIFIED PATTERN IS DEVELOPING ACROSS THE NORTHWEST HEMISPHERE FOR THE UPCOMING WEEK LEAVING RIDGING ALONG THE WEST COAST AND A TROUGHING OVER THE THE EASTERN CONUS. AS SUCH THE SNOW THAT HAS BEEN LINGERING IN THE SOUTHERN VALLEYS SHOULD FINALLY FIZZLE OUT AND REFOCUS OVER THE HIGHER TERRAIN OF THE NORTHERN AND CENTRAL MOUNTAINS. OUR FRIEND THE POLAR VORTEX LOOKS TO BE DOMINATING THE FLOW PATTERN ACROSS NOAM GOING IN THE UPCOMING WEEK LEAVING A DOMINANT RIDGE ALONG THE WEST COAST.
THIS EVENING THROUGH SATURDAY NIGHT UPPER LEVEL ANALYSIS REVEALS BROAD TROUGH MOVING OVER CO/NM WITH HUDSON BAY LOW BEGINNING TO PUSH SOUTHWARD. SURFACE TEMPS CONFIRM WITH READINGS IN THE LOW SINGLE DIGITS IN THESE AREAS. EXPECT CLEARING AS COLD DRY AIR PUSHES IN AHEAD OF ARCTIC HIGH PRESSURE. AS THIS HIGH PRESSURE SETTLES IN.
Low clouds have continued to wrap around the troughs circulation with a bit mist and a spit or two here or there, but most of accumulating precipitation has moved to our northeast. Joseph might see a few flakes overnight, but the highest snowfall totals look to be focused across the I-44 corridor across southern and eastern Missouri early Saturday morning through the day. Winds along the leading edge of the high will make the north wind overnight and through the day Saturday rather strong with gusty winds during the daylight hours Saturday dragging down the coldest of the temperatures.
349 PM MST FRI JAN 8 2016 A MORE AMPLIFIED PATTERN IS DEVELOPING ACROSS THE NORTHWEST HEMISPHERE FOR THE UPCOMING WEEK LEAVING RIDGING ALONG THE WEST COAST AND A TROUGHING OVER THE THE EASTERN CONUS. AS SUCH THE SNOW THAT HAS BEEN LINGERING IN THE SOUTHERN VALLEYS SHOULD FINALLY FIZZLE OUT AND REFOCUS OVER THE HIGHER TERRAIN OF THE NORTHERN AND CENTRAL MOUNTAINS. OUR FRIEND THE POLAR VORTEX LOOKS TO BE DOMINATING THE FLOW PATTERN ACROSS NOAM GOING IN THE UPCOMING WEEK LEAVING A DOMINANT RIDGE ALONG THE WEST COAST.
550 PM CST FRI JAN 8 2016 00Z TAF CYCLE A CLOSED UPPER LOW OVER THE PANHANDLES WILL WEAKEN INTO AN OPEN WAVE AS IT MOVES EAST AWAY FROM THE PANHANDLES TONIGHT. FOG OR FREEZING FOG. /ISSUED 327 PM CST FRI JAN 8 2016/ UPPER LEVEL LOW OVER ABQ WILL CONTINUE TO MOVE EAST SOUTHEAST THROUGH THE NIGHT AND IT SHOULD PASS JUST SOUTH OF OUR CWA. A DEFORMATION ZONE IS EXPECTED TO DEVELOP ON THE NORTH SIDE OF THE LOW AS IT MOVES THROUGH. THE UPPER LEVEL LOW WILL PULL AWAY FROM THE PANHANDLES ON SATURDAY AND THE SNOW SHOULD COME TO AN END BY SUNRISE. AS THE UPPER LOW PULLS AWAY IT WILL ALLOW FOR CANADIAN AIR TO SPILL SOUTHWARD OVER THE PANHANDLES.
510 PM CST FRI JAN 8 2016 MID LEVEL TROUGH SAGGING OVER NORTHWEST IOWA THIS AFTERNOON WILL SLOWLY SHIFT EAST OF THE AREA THROUGH MIDNIGHT. CLOSER TO THE LOWEST END OF GUIDANCE SPECTRUM THOUGH NOT QUITE AS EXTREME AS RAW CANADIAN MODEL NUMBERS AT THIS POINT.
627 PM EST FRI JAN 8 2016 AREAS OF LIGHT RAIN AND DRIZZLE CAN BE EXPECTED THIS EVENING AS A WARM FRONT LIFTS INTO THE REGION.
The low has a complex structure at the moment and is somewhat disorganized with several smaller scale impulses embedded within broader circulation. The low will eventually move across OK during the day Saturday while phasing with northern stream energy diving through the northern plains and aiding in a surge of much colder air later tonight and Saturday morning. Forcing will be on the increase this evening ahead of the low with widespread showers developing and spreading north.
Currently, a closed upper level low is emerging from the Four Corners region. This results in a rapidly maturing cyclone and a heavier band of snow developing across the central and eastern Ozarks. The highest amounts are expected to fall near the Interstate 44 corridor, especially to the northeast of Springfield.
348 PM MST FRI JAN 8 2016 QUICK UPDATE TO START PARING OUT NORTHERN PORTIONS OF THE HIGHLIGHTS AS SNOW INTENSITY CONTINUES TO DIMINISH. UPPER LOW OVER NORTHERN NEW MEXICO WILL CONTINUE SHIFTING SOUTHEASTWARD THROUGH THE EVENING. THOUGH APPEARS TO BE RE- INTENSIFYING ACROSS SOUTHERN PORTIONS OF THE AREA AS THE UPPER LOW SHIFTS SOUTHEASTWARD. PARTICULARLY THE SOUTHERN SANGRES AND THE NORTHERN RATON RIDGE. TEMPERATURES TOMORROW SHOULD REMAIN BELOW FREEZING FOR MOST AREAS.
545 PM CST FRI JAN 8 2016 A COLD FRONT IS APPROACHING THE AREA FROM THE NORTH. AN UPPER LEVEL LOW OVER NORTHERN NEW MEXICO WILL TRACK EASTWARD AND INTO NORTH CENTRAL TEXAS TONIGHT. A COLD FRONT IS FORECAST TO PUSH ACROSS THE HILL COUNTRY AND EASTERN COUNTIES TONIGHT INTO THE OVERNIGHT HOURS. A NORTHWEST BREEZE WILL PREVAIL ACROSS THE AREA ON SATURDAY WITH COOL AIRMASS SPREADING ACROSS THE AREA WITH HIGHS IN THE LOWER 50S ACROSS THE HILL COUNTRY TO LOWER 60S OVER THE COASTAL PLAINS.
STORM SYSTEM ACROSS THE LOWER MISSISSIPPI RIVER VALLEY WILL LIFT NORTHEAST INTO THE TENNESSEE VALLEY.
808 PM EST FRI JAN 8 2016 HIGH PRESSURE WILL RIDGE INTO THE FORECAST AREA FROM THE NORTH WITH A PRESSURE TROUGH JUST OFF THE COAST THROUGH SATURDAY. A DEVELOPING WARM FRONT WILL BE JUST SOUTH OF THE FORECAST AREA SATURDAY. AN APPROACHING COLD FRONT WILL MOVE THROUGH THE AREA SATURDAY NIGHT.
STRONG UPPER LOW WAS SITUATED OVER HUDSON BAY THIS AFTERNOON WITH A BROAD TROUGH COVERING MUCH OF NORTH AMERICA. CORE OF UPPER LOW IS FORECAST TO MEANDER A BIT THROUGH THE WEEKEND. SEVERAL IMPULSES ROTATING AROUND UPPER LOW AND THROUGH MEAN TROUGH AXIS IN THE PLAINS WILL TAP ARCTIC AIR FROM THE NORTHERN CANADIAN PLAINS AND DRAG IT INTO THE CENTRAL CONUS FROM TIME TO TIME.
For tonight, the main upper low moves east across the Red River Valley from east central New Mexico and gives a glancing shot of snow across mainly the southern tier of Kansas counties on the Oklahoma border.
COLD FRONT CURRENTLY OVER NORTHWEST ARKANSAS AT THIS TIME WITH PARENT LOW IN EASTERN TEXAS. STILL EXPECTING THE LOW TO EJECT TO THE NORTHEAST TONIGHT AND DRAGGING THE COLD FRONT THROUGH THE STATE. AS STRONG COLD FRONT WILL ENTER THE REGION SATURDAY. A WARM FRONT WILL LIFT NORTH AND BRING RAIN CHANCES BACK TO THE STATE. TEMPERATURES WILL FALL BEHIND THE COLD FRONT DURING THE AFTERNOON HOURS. AS THE UPPER LOW MOVES ACROSS THE STATE. MAINLY CONFINED TO GRASSY AREAS AND ELEVATED ROADWAYS AND BRIDGES. ACROSS THE HIGHER TERRAIN OF WESTERN ARKANSAS.
616 PM CST FRI JAN 8 2016 THE RADAR MOSAIC AND WATER VAPOR SATELLITE IMAGERY ARE INDICATING A FAIRLY LARGE AMOUNT OF UPPER FORCING ACROSS OUR WESTERN CWA ASSOCIATED WITH A STRONG UPPER LOW CENTERED IN EASTERN NEW MEXICO. /ISSUED 545 PM CST FRI JAN 8 2016/ A COLD FRONT IS APPROACHING THE AREA FROM THE NORTH. AN UPPER LEVEL LOW OVER NORTHERN NEW MEXICO WILL TRACK EASTWARD AND INTO NORTH CENTRAL TEXAS TONIGHT. A COLD FRONT IS FORECAST TO PUSH ACROSS THE HILL COUNTRY AND EASTERN COUNTIES TONIGHT INTO THE OVERNIGHT HOURS. A NORTHWEST BREEZE WILL PREVAIL ACROSS THE AREA ON SATURDAY WITH COOL AIRMASS SPREADING ACROSS THE AREA WITH HIGHS IN THE LOWER 50S ACROSS THE HILL COUNTRY TO LOWER 60S OVER THE COASTAL PLAINS.
TEMPERATURES ARE IN THE LOWER TO MID 70S. IN THE LOW LEVELS OF THE ATMOSPHERE. A TROUGH OF LOW PRESSURE NEAR THE FLORIDA KEYS WILL PROGRESS EASTWARD TOWARD THE BAHAMAS OVERNIGHT. A TROUGH OF LOW PRESSURE WILL ENTER THE NORTHWEST GULF OF MEXICO TONIGHT.
AN UPPER LEVEL RIDGE OF HIGH PRESSURE IS BUILDING IN BEHIND THIS STORM TODAY AND WILL SLOWLY AMPLIFY OVER CENTRAL CA THROUGH THE WEEKEND. THERE IS ANOTHER STORM SYSTEM OVER THE EASTERN PACIFIC BUT IT NOW APPEARS AS THOUGH IT WILL WEAKEN AS IT TRIES TO MOVE INTO THE RIDGE POSITION OVER CENTRAL CA SATURDAY.
A MORE AMPLIFIED PATTERN IS DEVELOPING ACROSS THE NORTHWEST HEMISPHERE FOR THE UPCOMING WEEK LEAVING RIDGING ALONG THE WEST COAST AND A TROUGHING OVER THE THE EASTERN CONUS. AS SUCH THE SNOW THAT HAS BEEN LINGERING IN THE SOUTHERN VALLEYS SHOULD FINALLY FIZZLE OUT AND REFOCUS OVER THE HIGHER TERRAIN OF THE NORTHERN AND CENTRAL MOUNTAINS. OUR FRIEND THE POLAR VORTEX LOOKS TO BE DOMINATING THE FLOW PATTERN ACROSS NOAM GOING IN THE UPCOMING WEEK LEAVING A DOMINANT RIDGE ALONG THE WEST COAST.
UPPER LEVEL LOW OVER THE FOUR CORNERS REGION WILL OPEN UP AND SHIFT TO THE EAST TONIGHT INTO EARLY SATURDAY. ASSOCIATED COLD FRONT WILL PUSH THROUGH THE AREA LATE TONIGHT INTO SATURDAY MORNING AS WELL. DESPITE INCREASED LIFT WITH UPPER TROUGH AND FRONT. EXCEPT FOR THE IMMEDIATE COAST WHERE TEMPS WILL BE IN THE LOWER 40S.
644 PM EST FRI JAN 8 2016 SHOWERS WILL DECREASE IN COVERAGE THIS EVENING WITH STEADY TEMPERATURES THROUGH MUCH OF THE NIGHT BEHIND A CROSSING WARM FRONT.
THE PASSAGE OF THE STORM SYSTEM/UPPER TROF THIS EVENING WILL ALSO DRAG A STRONG COLD FRONT ACROSS SE TX OVERNIGHT AND EARLY SAT MORNING. THE RIDGING WITH WILL BE SHORT LIVED AS WE SEE THE RETURN OF THE SUBTROPICAL JET OVER THE STATE WITH ANOTHER UPPER TROF DIGGING INTO NRN MEXICO. BEFORE POPS SPREAD FURTHER INLAND (LATE WEDS/THUR) AS THE UPPER TROF MOVES IN FROM THE WEST. 41 PATCHY AREAS OF DENSE SEA FOG WILL REMAIN A POSSIBILITY UNTIL 1-3AM UNTIL A PREFRONTAL TROUGH PUSHES THRU THE WATERS. AHEAD OF THIS TROF. COLD FRONT ITSELF WILL MOVE INTO THE AREA EARLY SAT MORNING.
456 PM MST FRI JAN 8 2016 00Z TAF CYCLE CLOSED UPPER LOW CENTERED OVER NORTH CENTRAL AND NORTHEAST NM TO MOVE EAST SOUTHEAST AND EXIT NM BY 10Z. COLD FRONT OVER NE NM AT 23Z TO CONTINUE SAGGING SWD THROUGH THE ERN PLNS BEFORE 12Z WITH LINGERING ARAS OF MVFR TO IFR CIGS/VSBYS IN LIGHT PRECIPITATION AND BR BEFORE 15Z.
330 PM MST FRI JAN 8 2016 RAP 500 MB ANALYSIS AND WATER VAPOR IMAGERY INDICATED AN UPPER LEVEL LOW MOVING ACROSS THE FOUR CORNERS REGION BRINGING SNOW TO COLORADO AND NEW MEXICO. THE AVAILABILITY OF MOISTURE AND LIFT PROVIDED BY THE PASSING UPPER LEVEL TROUGH WILL KEEP PERSISTENT CLOUD COVER ACROSS THE TRI STATE AREA THIS AFTERNOON THROUGH THE OVERNIGHT PERIOD. LIGHT SNOW IS POSSIBLE IN SOME PORTIONS OF THE TRI STATE AREA BEFORE THE UPPER LEVEL TROUGH BASE PASSES THROUGH THE HIGH PLAINS. THE TROUGH BASE WILL PASS THROUGH THE REGION BY 6Z. EXPECTING TEMPERATURES TO DROP INTO THE LOW TO UPPER TEENS.
554 PM CST FRI JAN 8 2016 HIGH PRESSURE CONTINUES TO BUILD SOUTHEAST OVER WESTERN AND CENTRAL NORTH DAKOTA. COLD ARCTIC AIR WILL BE THE HIGHLIGHT OF THE SHORT TERM FORECAST.
TEMPERATURES ARE CURRENTLY HOLDING STEADY OR RISING INTO THE LOW TO MID 50S. IN ADDITION, SOME BREAKS IN THE LOW CLOUD COVER IS NOTED ON IR SATELLITE AND SFC OBSERVATIONS--NECESSITATING A CHANGE IN THE SKY COVER FORECAST. MVFR VISIBILITIES ARE EXPECTED TO BEGIN BETWEEN 14Z-16Z AT MSL-HSV AS RAIN AND TEMPO TSRA MOVES IN ALONG AND SLIGHTLY AHEAD OF A COLD FRONT AND CONTINUES THROUGH THE END OF THE FORECAST PERIOD.
ONLY OTHER CONCERN IS WEAK ENHANCEMENT OF COOLER TOPPED CLOUDS IN THIN BAND MOVING INTO THE SOUTHERN/EASTERN HIGHLANDS. CURRENT FORECAST KEEPS NIGHTTIME LOWS TO THE WARM SIDE OF GUIDANCE AND DAYTIME HIGHS THE SAME OR A DEGREE OR SO COOLER.
A COLD FRONT WILL BEGIN TO APPROACH THE CWFA BY EARLY TOMORROW. HI- RES MODELS SHOW A PRE-FRONTAL TROUGH MOVING INTO THE WESTERN CWFA AROUND 18Z TOMORROW. AS THE SYSTEM/PRE-FRONTAL TROUGH HAS SLOWED DOWN A FEW HOURS. THE PRE-FRONTAL TROUGH SHOULD BE THROUGH THE CWFA BY 02Z.
A RATHER COLD PACIFIC LOW IS EXPECTED TO BRING MUCH COOLER TEMPERATURES TO THE ENTIRE REGION.
AS UPPER LEVEL LOW PRESSURE LIFTS AWAY FROM THE AREA.
UPPER LEVEL TROUGH WILL DEEPEN OVER THE WESTERN US TODAY/TONIGHT WITH FLOW BECOMING SOUTHWESTERLY OVER THE CWA. LOW PRESSURE DEVELOPS OVER NV WITH FRONTAL BOUNDARY BECOMING MORE WELL DEFINED INTO EASTERN ND.
959 AM EST MON NOV 2 2015 LOW PRESSURE WILL TRACK TO THE SOUTH TODAY.
501 AM EST MON NOV 2 2015 AN ANOMALOUS UPPER LVL RIDGE WILL BUILD ACROSS THE EASTERN CONUS THIS WEEK.
225 AM PST MON NOV 2 2015 LOW PRESSURE ALOFT WILL MOVE OVERHEAD TODAY INTO TUESDAY BEFORE EXITING TO THE EAST. THE LOW WILL BRING THE POTENTIAL FOR RAIN AND HIGH ELEVATION SNOWFALL THROUGH TUESDAY.
THE BULK OF MOISTURE LIES TO THE SOUTH OF MODOC AND SISKIYOU COUNTY AND WILL CONTINUE TO SHIFT SOUTH AND EAST AS THE UPPER LEVEL TROUGH MOVES INLAND.
MID LEVEL FLOW BECOMES MORE SOUTHWESTERLY AS WESTERN TROUGH NUDGES EAST CLOSER TO THE ROCKIES TONIGHT AND TUESDAY. WITH TROUGH NOT MOVING VERY MUCH MODELS ARE FARTHER WEST WITH ANY SHORT WAVE ENERGY LIFTING OUT OF TROUGH. UPPER TROUGH CONTINUES TO SHIFT GRADUALLY EAST INTO MIDWEEK.