Aikyam-Lab/Synoptic-Bench huggingface dataset:
400 AM CST MON JAN 4 2016 UPPER LEVEL RIDGING IS CURRENTLY IN PLACE OVER NORTH TEXAS AND WILL RESULT IN SUNNY SKIES AND A DRY FORECAST TODAY AND TUESDAY. TEMPERATURES WILL BE SLIGHTLY BELOW NORMAL AS WELL WITH THE WEAK NORTH WINDS HELPING TO REINFORCE THE COOLER AIR.
CLEAR SKIES AND VFR AHEAD WITH STRONG AND DRY HIGH PRESSURE IN CONTROL. WITH VERY DRY HIGH PRESSURE IN CONTROL CLEAR SKIES CAN BE EXPECTED. TUESDAY MORNING WE ARE LOOKING AT THE CHANCE OF FREEZING TEMPS ARCS CNTRL LA AND LAKES REGION IN SE TX BUT TEMPS WILL RECOVER QUICKLY AFTER SUNRISE.
1056 PM MST SUN JAN 3 2016 18Z WATER VAPOR IMAGERY/RUC ANALYSIS INDICATES SHORT WAVE RIDGING IN PLACE ACROSS THE HIGH PLAINS. WITH ANY CIRRUS NOT MOVING PAST THE RIDGE AXIS AT THIS POINT. TEMPS HAVE CLIMBED QUICKLY AND WILL LIKELY SEE SEVERAL LOCATIONS IN THE LOW 50S TODAY. MAIN CONCERN FOR THE PERIOD WILL BE FOG POTENTIAL TONIGHT AS COOLER AIR BACKS INTO THE AREA. ESPECIALLY AS LEE TROUGH BEGINS TO DEVELOP ACROSS EASTERN COLORADO. SOUTHERLY WINDS WILL INCREASE TO AROUND 20 MPH AND BECOME GUSTY ALONG THE KS-CO BORDER AS LEE TROUGH STRENGTHENS.
A STRATUS DECK ASSOCIATED WITH A BACKDOOR COLD FRONT OVER THE UPPER MISSISSIPPI VALLEY WILL CONTINUE TO SLOWLY WORK SOUTH/SOUTHWEST TONIGHT. MAY SEE COOLER TEMPS IN THE PLATTE RIVER VALLEY THAN CURRENTLY FORECAST. WINDS TURN SOUTHERLY ON THE BACKSIDE OF THE HIGH AND INCREASE THROUGH THE MORNING.
FORECAST REMAINS IN TRACK FOR CLEARING CONDITIONS ON MONDAY AND HIGHS IN THE LOWER 70S. A COLD FRONT WILL MOVE THROUGH THE FLORIDA KEYS TONIGHT.
1117 PM CST SUN JAN 3 2016 HIGH PRESSURE WILL CONTINUE OVER THE AREA THROUGH THE PERIOD.
1253 AM EST MON JAN 4 2016 A RE-ENFORCING COLD FRONT WILL MOVE THROUGH THE REGION TONIGHT.
UPPER LOW OVER SW AL IS MOVING SE AT 26KTS. HIGH PRESSURE REMAINS UNTIL MIDWEEK STORM MOVES OUR WAY.
339 AM CST MON JAN 4 2016 High pressure over the northern Plains will build into the Great Lakes area today causing subsidence aloft to help clear out some of the widespread cloud cover over the region. near or slightly cooler than yesterday with highs from around 30 to 35. Winds will start the day with a light NW breeze 10-15 mph then decrease to N 5-10 mph as the approaching high pressure center brings a weaker pressure gradient across the area. Southwesterly flow reestablishes itself in the midlevels and warmer air filters into the region. A return of the warmer temperatures will also signal some more moisture feeding into the Midwest.
A WEAK UPPER LEVEL RIDGE WILL MOVE ACROSS NORTH TEXAS MONDAY.
MOUNTAIN SNOW AND COOLER TEMPERATURES THIS WEEK. WATER VAPOR IMAGERY AND 04/00Z UPPER-AIR PLOTS SHOW RIDGING TO OUR EAST OVER WEST TEXAS AND NEW MEXICO. WITH AN APPROACHING PACIFIC TROUGH CURRENTLY JUST OFFSHORE OF THE SOUTHERN CALIFORNIA AND NORTHERN BAJA COASTS. TEMPERATURES ACROSS THE REGION RANGED FROM THE LOWER 40S TO THE MID 60S.
HIGH PRESSURE WILL BRING A RETURN TO DRY WEATHER TUESDAY WITH TEMPERATURES MODERATING TO ABOVE NORMAL AGAIN DURING THE SECOND HALF OF THE WEEK. ADDITIONAL ACCUMULATIONS OF 1 TO 3 INCHES WILL BE POSSIBLE IN THE MOST PERSISTENT SNOW ACROSS THE CHAUTAUQUA RIDGE. LAKE EFFECT SNOW WILL CONTINUE SOUTH OF LAKE ONTARIO AND ERIE ON MONDAY NIGHT AS OUR FIRST ARCTIC BLAST OF THE SEASON HOLDS HIGH TEMPERATURES IN THE LOW TEENS AND SINGLE DIGITS. SNOW WILL TAPER OFF RATHER QUICKLY THROUGH MONDAY NIGHT AS THE CAPPING INVERSION LOWERS UNDER THE RIDGING BUILD IN. TEMPERATURES WILL START A SLOW REBOUND ON TUESDAY AS THE PROGRESSIVE PATTERN QUICKLY BUILDS RIDGING ACROSS THE FORECAST AREA.
311 AM CST MON JAN 4 2016 High pressure will prevail at the surface and aloft today resulting into slightly cooler temperatures across the area this afternoon.
216 AM EST MON JAN 4 2016 A RE-ENFORCING COLD FRONT WILL MOVE THROUGH THE REGION TONIGHT.
THE UPPER TROUGH WILL CONTINUE TO SHIFT EAST THROUGH THE DAY TODAY CLEARING OUT THE AREA WITH A WEAK UPPER RIDGE BEHIND IT APPROACHING THE AREA THROUGH TUESDAY. HIGH PRESSURE WILL BE BUILDING INTO THE AREA TODAY FROM THE GREAT LAKES REGION WITH SKIES CLEARING AND SOME DRIER AIR MOVING IN. THE HIGH PRESSURE CENTER WILL SHIFT EAST THROUGH THE REST OF THE PERIOD TO OVER THE MID-ATLANTIC REGION.
DRY CONDITIONS ARE THEN EXPECTED THROUGH MID WEEK AS HIGH PRESSURE BUILDS INTO THE REGION. THE MAJORITY OF THE HIGHER RES MODELS ARE INDICATING A FAIRLY QUICK WEAKENING IN THE SNOW SHOWER ACTIVITY THROUGH 12Z.
1106 PM CST SUN JAN 3 2016 FOR 06Z TAFS /ISSUED 927 PM CST SUN JAN 3 2016/ THE LATEST 03Z SURFACE OBS AND IR SATELLITE IMAGERY BOTH INDICATE THAT LOW CLOUDS CONTINUE TO ADVANCE SOUTHWARD OUT OF THE LOWER OHIO VALLEY AND ARE CLOSING IN ON NORTHERN MIDDLE TENNESSEE. THE COLD FRONT WAS ANALYZED TO BE THROUGH THE FORECAST AREA AS OF 03Z AND WAS FURTHER DEPICTED BY WATER VAPOR IMAGERY TO BE MOVING INTO CENTRAL ALABAMA. THE LOWER CLOUDS BELOW 3KFT SHOULD MOVE INTO SOUTHERN MIDDLE TENNESSEE TOWARD MORNING AND INTO THE REST OF THE FORECAST AREA BY AROUND SUNRISE ON MONDAY.
240 AM MST MON JAN 4 2016 18Z WATER VAPOR IMAGERY/RUC ANALYSIS INDICATES SHORT WAVE RIDGING IN PLACE ACROSS THE HIGH PLAINS. WITH ANY CIRRUS NOT MOVING PAST THE RIDGE AXIS AT THIS POINT. TEMPS HAVE CLIMBED QUICKLY AND WILL LIKELY SEE SEVERAL LOCATIONS IN THE LOW 50S TODAY. MAIN CONCERN FOR THE PERIOD WILL BE FOG POTENTIAL TONIGHT AS COOLER AIR BACKS INTO THE AREA. ESPECIALLY AS LEE TROUGH BEGINS TO DEVELOP ACROSS EASTERN COLORADO. SOUTHERLY WINDS WILL INCREASE TO AROUND 20 MPH AND BECOME GUSTY ALONG THE KS-CO BORDER AS LEE TROUGH STRENGTHENS.
AREA WILL REMAIN UNDER HIGH PRESSURE WITH FAIRLY STAGNANT CONDITIONS. UPPER RIDGE AXIS SHIFTS EAST MONDAY WITH AN INCREASE IN 700MB WINDS DURING THE AFTERNOON. GFS 700MB TEMPERATURES CLIMB TO FREEZING MONDAY AFTERNOON BEFORE FALLING BACK TO -2C TUESDAY. THIS WILL GIVE WAY TO MORE OF A STORMY PATTERN FOR THU/FRI AS MOIST SOUTHWEST FLOW INCREASES AHEAD OF DEEP TROUGHING OVER THE SOUTHWESTERN US. EXCEPT BREEZY OVER AND NEAR THE HIGHER TERRAIN. MOISTURE WILL INCREASE AFTER MIDWEEK ALONG WITH COOLER TEMPERATURES.
IT STILL APPEARS SOME RAIN, SNOW AND BRIEF FREEZING RAIN WILL ACCOMPANY THIS FEATURE TONIGHT THROUGH EARLY TOMORROW MORNING. SNOW AND ICE AMOUNTS ARE STILL EXPECTED TO BE FAIRLY INSIGNIFICANT AS WAA KEEPS MINT'S NEAR OR ABOVE FREEZING.
1247 AM CST MON JAN 4 2016 A deep upper trough will dig from southeastern Canada into the northeastern U.
TEMPERATURES WILL BEGIN TO MODERATE LATER IN THE WEEK AS HIGH PRESSURE BUILDS EASTWARD. THE ARCTIC FRONT IS VERY HARD TO FIND BUT THE OLD RULE OF THUMB -10C 850MB ISOTHERM IS ALMOST OUT OF THE LOWER SUSQ VALLEY.
332 AM EST MON JAN 4 2016 MAIN STORY IN THE SHORT TERM IS THE STRONG COLD AIR ADVECTION PATTERN THAT IS CURRENTLY UNDERWAY AS A COLD DOME OF HIGH PRESSURE SETTLES OVER THE MID AND UPPER MS VALLEY REGION TODAY.
VFR CONDITIONS EXPECTED TODAY THROUGH MONDAY EVENING UNDER A MIX OF CLEAR SKIES AND SCATTERED HIGH CLOUDS AS HIGH PRESSURE RIDGING PERSISTS OVER MONTANA. AS THE UPPER LEVEL RIDGE OVER THE REGION BREAKS DOWN. TONIGHTS LOWS SHOULD BE WARMER THAN LAST NIGHTS ACROSS THE AREA. SOME SOUTHWEST VALLEYS AND HI-LINE LOCATIONS WILL REMAIN BELOW FREEZING.
AND STRUGGLE TO CLIMB ABOVE FREEZING ACROSS SOUTHWEST VIRGINIA AND FAR NORTHEAST TENNESSEE. NORTHWEST FLOW ALONG THE SOUTHWEST VIRGINIA AND EAST TENNESSEE MOUNTAINS COULD HELP TO ENHANCE LIFT AND SQUEEZE OUT SOME VERY LIGHT ACCUMULATIONS ALONG THE HIGHER ELEVATIONS /ABOVE 3000 FEET/.
1150 PM CST SUN JAN 3 2016 THE NW FLOW SHOULD MAINTAIN THE LOW LEVEL CLOUD COVER OVER THE NORTHERN AND EASTERN FORECAST THROUGH THE TONIGHT. THE RAP13/NAM12/GFS20 CONDENSATION PRESSURE DEFICITS IN THE LOW LEVELS SUGGEST THE CLOUD COVER OVER THE SOUTH CENTRAL FORECAST AREA WILL FILL BACK IN LATER IN THE NIGHT. MAINLY ALONG AND NEAR THE HIGHER TERRAIN OF THE GOGEBIC RANGE IN IRON COUNTY. THE FLOW WILL GRADUALLY WEAKEN OVERNIGHT AS A RIDGE OF HIGH PRESSURE SHIFTS INTO THE NORTHLAND FROM THE WEST AND NORTH. OVERNIGHT LOWS WILL LIKELY RANGE FROM THE LOW/MIDDLE TEENS IN NW WISCONSIN. THE NAM12/GFS20 SOUNDINGS INDICATE A THIN SATURATED LAYER IN THE LOWER LEVELS. TEMPERATURES COULD BE A FEW DEGREES WARMER. A SW FLOW AND WAA AHEAD OF THIS TROF WILL LEAD TO WARMER MIN TEMPS IN THE TEENS.
WHILE THE NORTHERN EDGE OF THE LOW CLOUDS IS DISSIPATING. THE LOW CLOUDS. THE SOUTHWESTERLY WINDS WILL CONTINUE TO INCREASE MONDAY NIGHT INTO TUESDAY MORNING OVER THE HIGHER ELEVATION OF THE PRAIRIE COTEAU. HIGHS ON TUESDAY SHOULD WARM INTO THE LOWER 30S AS A WEAK TROUGH CROSSING THE REGION.
1259 AM EST MON JAN 4 2016 AN UPPER LEVEL TROUGH WILL DEEPEN OVER THE OHIO VALLEY TONIGHT. A LARGE AREA OF HIGH PRESSURE WILL THEN SETTLE OVER THE GREAT LAKES MONDAY NIGHT. AND THERE TEMPERATURES MAY BE ABLE TO COOL INTO THE LOWER 20S. SETTING UP LOW TEMPS IN THE LOWER TEENS.
252 AM MST MON JAN 4 2016 FREEZING FOG HAS YET TO DEVELOP AS ADVERTISED.
THIS DISCUSSION WOULD JUST SAY HIGH PRESSURE BUILDING IN WITH GRADUALLY DECREASING CLOUDS. WE HAVE A BACK DOOR COLD FRONT/TROUGH MOVING SOUTH DOWN THE LAKE VEERING WINDS TO THE NORTHEAST IN IT/S WAKE. THE TROUGH SHOULD REACH SHEBOYGAN AROUND 12Z THIS MORNING AND KENOSHA BETWEEN 15-16Z.
VFR CONDITIONS THROUGH THE PERIOD WITH HIGH PRESSURE BUILDING INTO THE REGION. LIGHT NORTH AND NORTHWEST SURFACE WINDS WILL VEER NORTHEAST AND EAST BY THE END OF THE PERIOD AS HIGH PRESSURE DRIFTS EAST. TEMPERATURES HAVE WARMED TOWARDS THE LOW-60S. WHERE THE CLOUDS HAVEN'T CLEARED SURFACE MOISTURE STILL REMAINS ON THE HIGHER SIDE WITH THE COOLER TEMPERATURES. WINDS ARE NORTH-NORTHEAST WHICH COULD KEEP THE NEARSHORE/BAY LOCATIONS SLIGHTLY COOLER WITH WATER TEMPERATURES TO BE IN THE MID-50S. UPPER-LEVEL MOISTURE BEGINS TO RETURN LATE MONDAY EVENING IN RESPONSE TO DEEPENING TROUGH TO OUR WEST-NORTHWEST. THIS IS THE REASON WE ARE GOING WITH A COOLER FORECAST.
At the time of this writing precipitation just now moving into the northwestern and western sections of our CWA will continue to spread eastward across the area with the approach and passage of a fast moving cold front. Beyond today, high pressure at the surface and rising heights aloft will keep the region dry with below normal temperatures through the short term period. In fact, this area of high pressure will usher in the coldest air of the season thus far. All areas should get a hard freeze tonight and Sunday night with overnight lows expected to bottom out in the lower to mid 20s.
A COLD FRONT WILL MOVE THROUGH TODAY BRINGING IN MUCH COOLER TEMPERATURES FOR SUNDAY.
AN UPPER LEVEL TROUGH AXIS WAS MOVING EAST ACROSS THE STATE. THIS UPPER LEVEL TROUGH AXIS IS PROGGED TO MOVE EAST INTO THE RED RIVER VALLEY SHORTLY AFTER SUNRISE. A SURFACE WARM FRONT ASSOCIATED WITH THIS FEATURE IS PROGGED TO MOVE EAST ACROSS WESTERN AND CENTRAL NORTH DAKOTA AS WELL. WARMER WEATHER AND GUSTY WINDS ON SUNDAY WILL TRANSITION BACK TO WINTER-LIKE CONDITIONS BY MID TO LATE WEEK.
TEMPERATURES WILL BE MARKEDLY COOLER TODAY /ON THE ORDER OF 30 DEGREES IN MANY LOCATIONS/ BEHIND THE FRONT. AS THIS HIGH CONTINUES TO SHIFT SOUTHEAST OF THE AREA TONIGHT. SUBTLE HEIGHT RISES WILL ENSUE AS THE UPPER TROUGH CURRENTLY OVER THE UPPER MIDWEST TO CENTRAL PLAINS CONTINUES ITS EASTWARD PROGRESSION INTO THE EASTERN CONUS.
Cold front has reached a line from San Angelo to Brownwood at 330 AM, with wind speeds having gusted to over 40 mph at all of the Big Country locations and as far south behind the front as Sterling City.
HIGH PRESSURE ALOFT AND LIGHT OFFSHORE FLOW WILL CONTINUE OUR MILD AND DRY WEATHER CONDITIONS THROUGH THE WEEKEND. THIS SYSTEM WILL BRING MUCH COOLER CONDITIONS TO OUR REGION.
AS THE GFS SHOWS A SHARP COLD FRONT DROPPING SOUTH ACROSS THE FORECAST AREA. WHICH MAY LEAD TO A WINTRY MIX OF RAIN/SLEET/FREEZING RAIN AND SNOW ACROSS CENTRAL KS AND POTENTIALLY INTO SOUTH CENTRAL KS AS WELL.
410 AM CST SAT NOV 21 2015 EARLY SEASON ARCTIC COLD FRONTAL PASSAGE REMAINS ON TRACK TO PASS THROUGH THE MIDSOUTH THIS MORNING.
NORTHWEST FLOW ALOFT WITH SFC RIDGING MOVING THROUGH THE REGION. AND THE FASTER SOLUTIONS INDICATING SFC TEMPS IN THE LOW 30S.
HIGHS AREN/T EXPECTED TO WARM ABOVE FREEZING FOR MUCH OF THE FORECAST AREA. MODELS REMAIN IN GOOD AGREEMENT WITH TRANSITIONING TO BROAD UPPER LEVEL RIDGING/SOUTHWEST FLOW TUE. SOME WEATHER IMPACTS TO THIS HIGH TRAVEL TIME.
/issued 354 AM CST SAT NOV 21 2015/ The much anticipated, strong cold front has arrived and is currently moving through the I-10 corridor. The High Wind Warning for gap winds at Guadalupe Pass also looks good. By this time a large upper trough will begin to dig to our west.
WHICH WILL BEGIN TONIGHT AND CONTINUE THROUGH SUNDAY AS A STRONG COLD FRONT HEADS OUR WAY. BIG CHANGES BEGIN ON SUNDAY AS A STRONG COLD FRONT MOVES THROUGH THE WATERS.
/ISSUED 410 AM CST SAT NOV 21 2015/ EARLY SEASON ARCTIC COLD FRONTAL PASSAGE REMAINS ON TRACK TO PASS THROUGH THE MIDSOUTH THIS MORNING.
1024 AM EST SAT NOV 21 2015 HIGH PRESSURE WILL MOVE OFF THE COAST TONIGHT. A COLD FRONT WILL MOVE THROUGH THE AREA LATE TONIGHT. HIGH PRESSURE THEN BUILDS INTO THE AREA FOR THE WEEK AHEAD. XPCTG TNGT TO BE WARMER OVERALL THAN THE CURRENT NGT GIVEN THE FIRST HALF OF THE NGT WL BE XPRNCG SRLY FLOW AND XTNSV CLD CVRG WL PRECLUDE RAD COOLING. THAT COUPLED W/ UPSLOPE FLOW MEANS THAT THERE'LL LKLY BE SNSH OVRNGT IN THE HIGHLANDS. LOW PRESSURE LIFTS NORTH FROM THE ERN GREAT LAKES. THE ASSOCIATED COLD FRONT CLEAR THE CHESAPEAKE BAY AROUND SUNRISE.
HIGH PRESSURE WILL BRING MOSTLY CLEAR WEATHER TO WESTERN WASHINGTON THIS WEEKEND.
Gusty north winds will continue to decrease today as an area of high pressure at the surface crosses western Kansas.
522 AM CST SAT NOV 21 2015 THE 08Z MSL ANALYSIS SHOWED STRONG HIGH PRESSURE FROM SOUTHERN BRITISH COLUMBIA ACROSS WYOMING INTO WESTERN NEBRASKA AND WESTERN SOUTH DAKOTA. THE LOW PRESSURE CENTER HAD MOVED INTO SOUTHERN MISSOURI AND THE LAST FRONT WAS IN NORTH TEXAS TO SOUTHERN NEW MEXICO. NORTHWEST FLOW ALOFT WILL GRADUALLY BECOME SOUTHWEST DURING THE UPCOMING WEEK AHEAD OF A LARGE TROUGH OF LOW PRESSURE THAT WILL DIG INTO THE WESTERN CONUS.
646 AM EST SAT NOV 21 2015 DRY HIGH PRESSURE IS HANGING ON EARLY THIS MORNING. HOWEVER A FAST MOVING COLD FRONT IS NOW RACING ACROSS MISSOURI AND WILL PLOW THROUGH THE REGION LATER TODAY. THIS DRY AIR WILL BE A CONCERN FOR FIRE WEATHER INTERESTS AS SURFACE WINDS PICK UP AND BECOME GUSTY DURING THE DAY IN RESPONSE TO THE APPROACHING COLD FRONT. STRONG RIDGING WILL BUILD BACK OVER THE AREA FOR THE UPCOMING WEEK.
SHORT TERM: (Through Tonight) Ongoing precipitation will continue through early afternoon, eventually tapering off from west to east due to strong subsidence behind a cold front. Strong CAA behind the aforementioned cold front will produce falling temperatures during the day across most of the area. Overnight temperatures would be even lower if it weren't for the expected mid/high clouds ahead of a secondary vort max dropping through the upper trough tonight.
OTHER LIGHTER SHOWERS ARE MOVING EASTWARD ALONG I-30 AND ARE ASSOCIATED WITH THE APPROACHING ARCTIC COLD FRONT WHICH IS AT IDABEL OKLAHOMA. SURFACE AND LOW LEVEL WINDS WILL BECOME GUSTY FROM THE NORTHWEST AS THE FRESH HIGH PRESSURE POWERS DOWN INTO THE REGION. HIGH TEMPERATURES WILL OCCUR FOR MOST SITES BY LUNCH TIME TODAY EXCEPT SOME KISATCHIE PARISHES DURING THE MID AFTERNOON STILL AWAITING THE COLD FRONT.
DRY COOL UPPER RIDGE IN PLACE OVER THE REGION THROUGH THE WEEKEND. CONTINUED DRY THROUGH SUNDAY BUT ALSO A LITTLE WARMER SUNDAY ESPECIALLY AT HIGHER ELEVATIONS AS UPPER RIDGE MOVES IN FROM THE COAST. LATER SUNDAY MODELS BRING A WEAK PACIFIC SHORT WAVE TROUGH INLAND ACROSS OREGON WITH MORE EXTENSIVE HIGH CLOUDS.
COMING NIGHT WILL BE COLDEST SO FAR THIS SEASON WITH THE ENTIRE AREA DROPPING WELL BELOW FREEZING.
AN APPROACHING COLD FRONT COMBINED WITH A WEAK UPPER LEVEL DISTURBANCE OVER THE NORTHERN GULF WILL BRING INCREASING CLOUDS TO THE AREA TODAY ALONG WITH CHANCES OF RAIN. THE HIGHEST RAIN CHANCES WILL BE NEAR THE COAST AND OFFSHORE WHERE DEEPEST MOISTURE WILL BE.
1000 AM EST SAT NOV 21 2015 HIGH PRESSURE BUILDS DRIER WEATHER OVER NEW ENGLAND TODAY.
634 AM CST SAT NOV 21 2015 MADE ADJUSTMENTS TO MORNING FORECAST TO ACCOUNT FOR GREATER SHOWER COVERAGE ALONG THE HIGHWAY 84 CORRIDOR AND RAISE POPS.
520 AM CST SAT NOV 21 2015 A MUCH QUIETER DAY IN STORE AS SURFACE RIDGING SLIDES ACROSS THE REGION. WINDS WILL BE RELATIVELY LIGHT TODAY WITH THE HIGH PRESSURE. STAYED ON THE LOW SIDE OF GUIDANCE WITH RESPECT TO AFTERNOON HIGHS. TO UPPER 20S TO AROUND 30 THROUGH THE HIGHWAY 14 CORRIDOR WHERE LITTLE SNOW FELL. THE HIGH MOVES OFF TO THE EAST TONIGHT WITH A LIGHT SOUTHERLY FLOW RETURNING TO THE AREA. LOOKING AT MID/UPPER TEENS ALONG THE HIGHWAY 14 CORRIDOR TO JUST EITHER SIDE OF 10 DEGREES TO THE SOUTH OF THAT AREA. THIS SNOW SHOULD KEEP TEMPERATURES MUCH COOLER THAN SURROUNDING AREAS. AND WINDS FLOWING OVERTOP THE SNOWPACK WILL KEEP DOWNSTREAM AREAS A BIT COOLER AS WELL.
AREAS WITH RESIDUAL SNOWPACK COULD STAY FAIRLY CLOSE TO FREEZING.
1005 AM EST SAT NOV 21 2015 HIGH PRESSURE WILL CREST OVER THE REGION TODAY. LOW PRESSURE WILL MOVE NORTH OUT OF THE EASTERN GREAT LAKES TONIGHT AND WILL DRIVE A TRAILING COLD FRONT THROUGH THE REGION ON SUNDAY. HIGH PRESSURE WILL BUILD SOUTH OF NEW ENGLAND SUNDAY NIGHT WHILE LOW PRESSURE TRACKS TO OUR EAST.
HIGH PRESSURE ALOFT WILL EXPAND EAST ACROSS THE WESTERN STATES THIS WEEKEND. THIS HIGH PRESSURE WILL BRING DRY AND STABLE CONDITIONS TO UTAH.
AS HIGH PRESSURE SETTLES INTO THE REGION BEHIND THE FRONT. AS HIGH PRESSURE REMAINS OVER THE EASTERN SEABOARD. UPPER LEVEL TROUGHINESS OVER THE CENTRAL CONUS. HIGH PRESSURE CURRENTLY CENTERED TO OUR NE. AND RIDGING DOWN INTO OUR REGION. ALONG AND AHEAD OF THE APPROACHING COLD FRONT. ANOTHER UPPER VORT/JET STREAK WILL SHIFT SE AND DEEPEN THE UPPER TROUGH AND SHIFT IT INTO THE E CONUS SUN/SUN NT. WITH TROUGH AXIS PASSING THROUGH OUR REGION SUN NT. THIS WILL LEAD TO AN INCREASING AND SLIGHTLY BACKING SW FLOW ALOFT FOR OUR REGION TONIGHT INTO EARLY SUNDAY THAT APPEARS WILL SLOW THE COLD FRONTAL PASSAGE. A COOL DRY AIR HIGH PRESSURE AIR MASS WILL SETTLE INTO OUR REGION. GUIDANCE SUGGESTS MIN TEMPS NEAR OR BELOW FREEZING SUN AND MON NT.
528 AM CST SAT NOV 21 2015 Rain, mixing at times with snow, will taper off across western MO over the next few hours and across central MO through sunrise as a cold front pushes into southern and eastern MO. Clouds will stick around through the morning then rapidly clear from west to east as high pressure quickly builds in from the west. Despite the afternoon sun, cold air advection through the day will keep temperatures in the 30s, with parts of northern MO staying below freezing for the entire day. Low-level ridge axis will pass to our east tonight allowing winds to return from the south after midnight.
655 AM EST SAT NOV 21 2015 HIGH PRESSURE BUILDS DRIER WEATHER OVER NEW ENGLAND TODAY.
527 AM EST SAT NOV 21 2015 A REINFORCING COLD FRONT WILL SPAWN RAIN AND SNOW SHOWERS TONIGHT. AS A COLD FRONT SWEEPS OUT OF THE MIDWEST WITH LOW PRESSURE DEEPENING OVR THE GREAT LAKES. AND WITH DRY ENCROACHMENT AND MID LEVEL TROUGH PROGRESSION. ALTHOUGH THE FADING DYNAMICS PER THE WESTWARD TRACK AND RELATIVELY WARM BOUNDARY LAYER WILL NOT BE SUPPORTIVE OF ANY SIGNIFICANT ACCUMULATION OUTSIDE OF THE I 80 CORRIDOR AND RIDGES WHICH COULD SEE AN INCH IN THE PREDAWN. ZONES NORTH OF I 80 AS WELL AS THE RIDGES WILL EXPERIENCE SOME LINGERING SNOW SHOWER POTENTIAL INTO SUNDAY.
While this sounds quite cold, consider that the record lows at Butte by this time of year are already into the -20s! A ridge of high pressure will build overhead this weekend allowing for dry conditions with occasional high/mid level clouds. Temperatures will gradually warm over the higher terrain, but stable air over the valleys will lead to inversions and keep temperatures at or below normal.
HIGH PRESSURE WILL CONTINUE TO RESIDE OVER THE REGION PROVIDING MOSTLY CLEAR CONDITIONS AND COOL TEMPERATURES. OVERNIGHT LOWS WILL ONCE AGAIN BE BELOW FREEZING SO FREEZING FOG COULD BE AN ISSUE CAUSING SLICK CONDITIONS.
639 AM EST SAT NOV 21 2015 HIGH PRESSURE WILL CREST OVER THE REGION TODAY. LOW PRESSURE WILL MOVE NORTH OUT OF THE EASTERN GREAT LAKES TONIGHT AND WILL DRIVE A TRAILING COLD FRONT THROUGH THE REGION ON SUNDAY. HIGH PRESSURE WILL BUILD SOUTH OF NEW ENGLAND SUNDAY NIGHT WHILE LOW PRESSURE TRACKS TO OUR EAST.
A COLD DAY IS IN STORE TODAY AS COLD AIR CONTINUES TO FILTER INTO THE STATE BEHIND LAST NIGHTS COLD FRONT.
CLOUDS WILL BE MOVING IN AHEAD OF THE NEXT COLD FRONT. CHATTANOOGA AIRPORT, TN 60 33 46 27 / 20 20 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 60 33 43 23 / 20 40 10 0 OAK RIDGE, TN 61 33 42 23 / 30 30 0 0 TRI CITIES AIRPORT, TN 59 32 41 20 / 10 40 10 0.
413 AM CST SAT NOV 21 2015 RAP SURFACE PRESSURE RISES OF 10MB/3HR BEHIND THE COLD FRONT WILL SLOWLY LESSEN THROUGH THE MORNING HOURS. THIS WILL KEEP WINDS BREEZY AND WILL CREATE SOME BRISK CONDITIONS WHEN FACTORING IN THE MUCH COOLER TEMPERATURES. WE WILL BE LEFT WITH MOSTLY DRY UPPER LEVEL FLOW WITHIN BROAD CYCLONIC FLOW FROM A LARGE TROUGH.
LATEST IR IMAGERY OVERLAID WITH MODEL STREAMLINE ANALYSIS AS OF 900 AM ILLUSTRATE A BROADLY CYCLONIC MIDDLE AND UPPER TROUGH ENCOMPASSING MUCH OF THE CONUS INCLUDING THE NORTHERN HALF OF THE GULF OF MEXICO. AND THIS IS ASSOCIATED WITH SLOW MOVING CONVECTION DRIFTING TOWARDS THE LOWER KEYS. AT THE SURFACE AND IN THE LOWER TO MID LEVELS. A 1027 MB COLD ANTICYCLONE IS POSITIONED OVER CENTRAL NEW YORK STATES. A COLD FRONT EXTENDS SOUTHWEST TO CENTRAL TEXAS FROM LOW PRESSURE NEAR ST LOUIS. SKIES ARE PARTLY CLOUDY ACROSS THE MIDDLE AND UPPER KEYS AND MOSTLY CLOUDY ACROSS THE LOWER KEYS. KEY WEST RADAR DETECTS SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WITHIN A BAND UPSTREAM OF THE LOWER KEYS. TEMPERATURES ACROSS THE ISLANDS ARE ALREADY IN THE LOWER 80S WITH DEWPOINTS IN THE MID TO UPPER 70S.
712 AM EST SAT NOV 21 2015 AVIATION LOW PRESSURE IN MISSOURI IS SPREADING SNOW NORTH INTO LOWER MICHIGAN EARLY THIS MORNING.
-SHRA POSSIBLE THROUGH THE DAY AS A COLD FRONT APPROACHES THE AREA. AN APPROACHING COLD FRONT COMBINED WITH A WEAK UPPER LEVEL DISTURBANCE OVER THE NORTHERN GULF WILL BRING INCREASING CLOUDS TO THE AREA TODAY ALONG WITH CHANCES OF RAIN. THE HIGHEST RAIN CHANCES WILL BE NEAR THE COAST AND OFFSHORE WHERE DEEPEST MOISTURE WILL BE.
/ISSUED 413 AM CST SAT NOV 21 2015/ RAP SURFACE PRESSURE RISES OF 10MB/3HR BEHIND THE COLD FRONT WILL SLOWLY LESSEN THROUGH THE MORNING HOURS. THIS WILL KEEP WINDS BREEZY AND WILL CREATE SOME BRISK CONDITIONS WHEN FACTORING IN THE MUCH COOLER TEMPERATURES. WE WILL BE LEFT WITH MOSTLY DRY UPPER LEVEL FLOW WITHIN BROAD CYCLONIC FLOW FROM A LARGE TROUGH.
The initial wind shift associated with a strong cold front passed through the Springfield area shorty after 2 AM this morning. As high pressure begins to influence the area, winds will decrease, with light and variable conditions expected overnight. A bit of passing high cloud cover may keep readings just a hair warmer over central Missouri, with lows in the mid 20s.
At 08Z the upper level trough axis extended from northeast Nebraska into south central Kansas. The upper trough axis will move across northeast and east central Kansas by mid morning. Lows tonight will dip down into the lower 20s.
515 AM CST SAT NOV 21 2015 /12Z TAFS/ Strong cold front bringing windy conditions to West Central Texas terminals today. Cold front has reached a line from San Angelo to Brownwood at 330 AM, with wind speeds having gusted to over 40 mph at all of the Big Country locations and as far south behind the front as Sterling City.
COLD FRONT JUST READY TO CROSS THE MISSISSIPPI RIVER THIS HOUR. /ISSUED 410 AM CST SAT NOV 21 2015/ EARLY SEASON ARCTIC COLD FRONTAL PASSAGE REMAINS ON TRACK TO PASS THROUGH THE MIDSOUTH THIS MORNING.