Aikyam-Lab/Synoptic-Bench huggingface dataset:
406 AM CDT TUE MAR 22 2016 A WEAK WAVE TOPPING THE BROAD CENTRAL CONUS RIDGE IS RESPONSIBLE FOR SCATTERED LIGHT RETURNS ON RADAR THIS AM. WHICH COULD BRING MORE SNOW THAN EXPECTED TO THE WESTERN AND SOUTHWESTERN CWA DESPITE SURFACE TEMPERATURES ABOVE FREEZING.
139 AM EDT TUE MAR 22 2016 HIGH PRESSURE WILL REMAIN CENTERED SOUTH OF THE OHIO VALLEY THROUGH THE FIRST HALF OF THE WEEK.
IT WILL BE COOLER THAN NORMAL TODAY. AN NEAR DEAD AND INEFFECTUAL COLD FRONT IS WASHING OUT OVERHEAD AT THE MOMENT.
A RIDGE WILL BE OVER THE PLAINS TONIGHT AND THEN SHIFT EAST TUESDAY AHEAD OF A TROUGH MOVING INTO THE ROCKIES.
COOLER TEMPERATURES WILL FOLLOW AS THE SYSTEM MOVES EAST WEDNESDAY WITH BELOW FREEZING TEMPERATURES POSSIBLE IN THE COLDEST VALLEYS SOUTH AND EAST OF TUCSON. WATER VAPOR IMAGERY AND 22/00Z UPPER-AIR PLOTS SHOW AN APPROACHING TROUGH OF LOW PRESSURE MAKING ITS WAY INTO THE PACIFIC NORTHWEST WITH AN ASSOCIATED VORT MAX SWINGING THROUGH NORTH CENTRAL CALIFORNIA.
TEMPS WILL WARM TO NEAR CLIMO VALUES RANGING IN THE LOWER 70S INLAND TO UPPER 60S COAST WHERE THE SEA BREEZE IS AGAIN EXPECTED. MEAN LAYER SOUTHERLY FLOW DEVELOPS TONIGHT AS THE RIDGE CENTER BUILDS OFFSHORE OF THE ATLANTIC AND UPPER LEVEL FLOW BACKS SW IN ADVANCE OF DEVELOPING FRONTAL SYSTEM.
A TROUGH OF LOW PRESSURE MOVING INLAND THROUGH THE GREAT BASIN WILL BRING STRONGER ONSHORE FLOW WITH STRONG GUSTY WEST WINDS IN THE MOUNTAINS AND DESERTS INTO EARLY EVENING.
AN UPPER TROUGH WILL RESULT IN SCATTERED SHOWERS AND A FEW SUN BREAKS ACROSS WESTERN WASHINGTON TODAY. AN UPPER RIDGE WILL MOVE QUICKLY INLAND WEDNESDAY. AND A COLD FRONT WILL BRING RAIN LATE WEDNESDAY AND WEDNESDAY NIGHT.
A BROAD UPPER LEVEL TROUGH SETTLES OVER THE FORECAST AREA AND WESTERLY FLOW CONTINUES TO PROVIDE FOR OROGRAPHIC UPSLOPE SNOW OVER THE CASCADES HELPED BY A SERIES OF MODERATELY STRONG DISTURBANCE. WEDNESDAY WILL BE A MORE QUIET DAY AS HIGH PRESSURE AND RIDGING ALOFT BUILDS INTO THE AREA.
HIGH PRESSURE CONTINUES TO MOVE OFF TO THE EAST. TONIGHT THROUGH WEDNESDAY COLD CONDITIONS WERE SEEN THIS MORNING AS HIGH PRESSURE MOVED OVER THE STATE. THIS HIGH HAS SHIFTED EAST THIS AFTERNOON. A TRAILING COLD FRONT WILL BE MOVING SE THROUGH KS BY THIS SAME TIME.
444 AM EDT TUE MAR 22 2016 AN AREA OF HIGH PRESSURE WILL REMAIN SITUATED SOUTHEAST OF THE REGION.
132 AM EDT TUE MAR 22 2016 HIGH PRESSURE SLIDING EAST TODAY WILL ALLOW WARMER AIR TO MOVE NORTH INTO OUR REGION. A WINTRY MIX OF SNOW AND FREEZING RAIN WILL BE POSSIBLE JUST TO OUR NORTH ACROSS CENTRAL LOWER MICHIGAN.
THE HIGH WILL SLIDE EAST TODAY BEHIND EJECTING UPPER LEVEL TROUGH AND ZONAL FLOW WILL BRIEFLY MOVE IN. A DEEPENING UPPER LEVEL TROUGH WILL BEGIN TO DIP SOUTHEAST FROM THE PACIFIC NORTHWEST TODAY AND TRACK ACROSS THE CENTRAL PLAINS WEDNESDAY. A COLD FRONT ASSOCIATED WITH THE UPPER TROUGH WILL SURGE SOUTHWARD TOWARDS THE CWA WEDNESDAY NIGHT.
AN UPPER LEVEL TROUGH MOVES FROM THE GREAT BASIN TODAY TO THE CENTRAL PLAINS WEDNESDAY.
337 AM CDT TUE MAR 22 2016 (Today and Tonight) An upper trough over the northwest CONUS today will continue to dig to the southeast with a closed upper low forming over the Southern Plains tonight. At the surface, a closed low over the Southern Plains will serve to maintain a tight surface pressure gradient across West Central Texas with south winds of 15 to 25 mph, with higher gusts. High temperatures will be above seasonal norms in the upper 70s to the lower 80s.
159 AM EDT TUE MAR 22 2016 HIGH PRESSURE BUILDS INTO THE AREA FROM THE WEST THROUGH TUESDAY MORNING.
551 AM EDT TUE MAR 22 2016 A WEAK LOW PRESSURE SYSTEM AND WARM FRONT WILL APPROACH LATER IN THE DAY TODAY AND BRING INCREASING CLOUDS. THIS LOW MOVE ACROSS THE REGION OVERNIGHT BRINGING SOME LIGHT SNOW TO THE MOUNTAINS AND A FEW RAIN SHOWERS FURTHER SOUTH.
HIGH PRESSURE WILL EXTEND INTO THE AREA WITH A MAINLY CLEAR SKY.
WITH VERY LITTLE LOW LEVEL CAA BEHIND IT AND TEMPERATURES ALOFT QUITE A BIT WARMER THAN YESTERDAY. HIGH TEMPERATURES WILL ALSO BE SEVERAL DEGREES WARMER IN SPOTS. SAID MODELS ARE A BIT SLOWER AND MAINTAIN A CLOSED CIRCULATION WITH THE UPPER TROUGH AS IT SWINGS ACROSS EASTERN IOWA AND WISCONSIN. BUT THE ATMOSPHERE DOES SATURATE AS THE TROUGH/FORCING APPROACHES AND THE ENTRANCE REGION OF THE NORTHERN STREAM JET REMAINS LOCKED OVER NORTHERN MN. AND INTO WISCONSIN AS THE UPPER LOW BEGINS TO LIFT OUT. THE HIGHER END AMOUNTS SHOULD DEVELOP MAINLY ALONG THE I35 CORRIDOR IN SOUTHERN MN AND ALONG I94 IN WEST CENTRAL WISCONSIN.
FREEZE WARNINGS AND FROST ADVISORIES IN EFFECT FOR MUCH OF THE A VERY DRY AIRMASS HAS INFILTRATED THE AREA AS A RESULT OF STRONG HIGH PRESSURE SINKING WELL SOUTH OVER SOUTHEAST TEXAS AND THE NORTHWEST GULF OF MEXICO. AN EXCELLENT MIXING PROFILE HAS DRIVEN AREA DEWPOINTS INTO THE LOWER TO MID 20S OVER A WIDE EXPANSE AND CONTINUED COLD AIR ADVECTION PATTERN KEEPS TEMPERATURES IN THE LOW TO MID 50S.
AN UPPER LEVEL TROUGH IS MOVING INTO WESTERN WASHINGTON AND OREGON AND HAS PUSHED MULTIPLE BANDS OF SHOWERS THROUGH EASTERN WASHINGTON AND OREGON. CURRENT TEMPERATURES REMAIN ABOVE FREEZING BELOW 5000 FT IN THE BLUE MOUNTAINS AND WALLOWA COUNTY. SNOW LEVELS WILL DROP AS THE TROUGH MOVES INLAND AND THE SNOW ADVISORY START TIME OF 11 PM FOR THE NORTHERN BLUES AND WALLOWA COUNTY IS STILL REASONABLE. A MID/UPPER LEVEL TROUGH IS MOVING INLAND AND WILL PRODUCE SCATTERED SHOWERS AT TIMES.
AN EXPANSIVE AREA OF HIGH PRESSURE COVERS THE SOUTHEAST UNITED STATES.
644 AM EDT TUE MAR 22 2016 AN AREA OF HIGH PRESSURE WILL REMAIN SITUATED SOUTHEAST OF THE REGION.
AN UPPER LEVEL LOW PRESSURE TROF WILL MOVE THROUGH THE PACIFIC NORTHWEST TONIGHT. AN ASSOCIATED COLD FRONT WILL CROSS THE CANADIAN BORDER EARLY MORNING AND BRING MUCH COOLER AIR INTO THE REGION. A CANADIAN COLD FRONT IS BEGINNING TO MOVE SOUTHWARD THROUGH THE REGION AT 05Z. THIS ACTIVITY WILL DISSIPATE INTO EARLY EVENING AS DRY AIR AND WEAK RIDGING MOVES OVER THE REGION. ATTENTION NEXT TURNS TO A LONGWAVE PACIFIC TROUGH THAT WILL CROSS SOUTHWEST MT ON TUESDAY. UPPER RIDGING OVER THE WEST COAST WEDNESDAY WILL PLACE THE AREA UNDER AN UNSTABLE NORTHWEST FLOW ALOFT AND LINGERING RAIN AND/OR SNOW SHOWERS.
558 AM CDT TUE MAR 22 2016 HIGHS ARE FORECAST NEAR 20 DEGREES ABOVE NORMAL TODAY AS 850MB THERMAL RIDGE PUSHES EAST INTO THE CENTRAL PLAINS. THE LOW AND ASSOCIATED BOUNDARY ARE FORECAST TO WEAKEN AND SAG SOUTH THROUGH THE DAY. FOCUS TURNS TO MID LEVEL LOW/TROUGH CURRENTLY OFF THE PACIFIC NORTHWEST COAST. DEFORMATION AXIS BEHIND THE LOW WILL EXTEND ACROSS OUR FAR NORTHWESTERN COUNTIES AND INTO CENTRAL NEBRASKA AT THIS TIME WHILE COLD AIR DIVES SOUTH OUT OF THE DAKOTAS. TIGHT BAROCLINIC ZONE WILL PLAY HAVOC ON TEMPS WEDNESDAY WITH TEMPS FALLING INTO THE LOWER 30S IN OUR NORTH WHILE IN THE LOWER 70S IN OUR SOUTH.
LEE TROUGHING ALONG THE ROCKIES ALONG WITH STRONG CYCLOGENESIS WILL AID IN STRENGTHENING WIND FIELDS TODAY ACROSS SOUTH TEXAS. AND I CURRENTLY FEEL THAT A PERIOD OF STRONG SOUTH SFC WINDS IS LIKELY TODAY GIVEN EXPECTED WARMER TEMPERATURES /MIXING/.
HIGH PRESSURE WILL BEGIN TO BUILD OVER CENTRAL CALIFORNIA ON WEDNESDAY INTO THE END OF THE WEEK. AN UPPER LEVEL TROUGH CONTINUES TO SHIFT SOUTHEAST INTO NEVADA THIS MORNING. ISOLATED SHOWERS ARE NOW CONFINED TO KERN COUNTY WITH THE HIGH RES MODELS QUICKLY DRYING OUT THE AREA BY 18Z. AS THE UPPER TROUGH EXITS SOUTHEAST INTO NEVADA AND UTAH. UPPER LEVEL HIGH PRESSURE WILL BEGIN TO BUILD EAST OVER CENTRAL CALIFORNIA WEDNESDAY INTO THE WEEKEND.
133 AM EDT TUE MAR 22 2016 A PRESSURE RIDGE APPROACHING FROM THE WEST WILL EXTEND THROUGH THE FORECAST AREA LATE TONIGHT AND EARLY TUESDAY. THE RIDGE WILL SHIFT OFF THE COAST TUESDAY AFTERNOON. WARMER TEMPERATURES WILL OCCUR BEGINNING TUESDAY IN THE SOUTHERLY FLOW ON THE BACKSIDE OF THE HIGH.
UPPER LEVEL TROUGH AXIS WILL SHIFT EAST SOUTHEAST OFF THE FLORIDA SOUTHEAST COAST AND INTO THE ATLANTIC THE REMAINDER OF THE MORNING WITH A ZONAL FLOW DEVELOPING IN ITS WAKE. AFTER A COOL START EARLY THIS MORNING A DEVELOPING EAST TO SOUTHEAST WIND FLOW WILL SUPPORT A WARMING TREND THROUGH THE PERIOD WITH HIGHS CLIMBING INTO THE LOWER TO MID 70S THIS AFTERNOON.
355 AM MST TUE MAR 22 2016 A PACIFIC LOW PRESSURE SYSTEM WILL MOVE INLAND ACROSS THE GREAT BASIN TODAY. BRINGING COOLER TEMPERATURES AND WINDY CONDITIONS THIS AFTERNOON AND EVENING. AFTER THE LOW PRESSURE SYSTEM MOVES EAST ON WEDNESDAY. WATER VAPOR/IR SATELLITE IMAGERY THIS MORNING SHOW THE DEEP UPPER LOW CURRENTLY MOVING INLAND OVER THE PACIFIC NORTHWEST STATES. THE FAVORABLE MOISTURE AND FORCING ASSOCIATED WITH THIS LOW WILL REMAIN WELL TO OUR NORTH. WINDS ALONG THE MOUNTAIN RIDGE TOPS HAVE STRENGTHENED. COLDER AIR WILL BE QUICKLY IMPORTED INTO THE REGION AS THE LOW TREKS EASTWARD. TO 40 MPH PLUS OVER THE HIGHER TERRAIN EAST OF PHOENIX AND ACROSS PORTIONS OF THE MOGOLLON RIM. ONLY WARMING UP INTO THE LOW 80S THIS AFTERNOON. THE UPPER LOW WILL BE EAST OF ARIZONA. INTO THE UPPER 70S FOR THE LOWER DESERT ELEVATIONS.
UPPER LEVEL TROUGH WILL MOVE ACROSS THE INTERMOUNTAIN WEST TODAY FOR SHOWERS. SOUTHWEST HIGHLANDS AND SOUTHERN TWIN FALLS COUNTY WILL SEE THE HIGHEST WINDS AT 20 TO 30 KTS WITH GUSTS TO 40 KTS THIS AFTERNOON WHICH IS JUST BELOW WIND ADVISORY CRITERIA. SHOWERS WILL CONTINUE THROUGH EARLY WEDNESDAY MORNING DIMINISHING BY WEDNESDAY AFTERNOON AS AN UPPER LEVEL RIDGE BUILD INTO THE REGION.
226 AM EDT TUE MAR 22 2016 BRIEF HIGH PRESSURE WILL KEEP THINGS DRY AT FIRST TODAY. BUT THIS WILL GIVE WAY TO A WAVE OF LOW PRESSURE MOVING THROUGH LATE TODAY THROUGH TONIGHT.
HIGH PRESSURE HAS SHIFTED EAST OF THE AREA OVER THE PAST SEVERAL HOURS AND IS NOW LOCATED OVER THE NORTH CENTRAL GULF SOUTH OF THE MISSISSIPPI DELTA. WITH THE RIDGE CENTERED EAST OF THE AREA WINDS HAVE BECOME SOUTHERLY ALBEIT VERY LIGHT. LOW PRESSURE WILL DEVELOP IN THE CENTRAL PLAINS AHEAD OF THE DISTURBANCE AND SERVE TO TIGHTEN THE PRESSURE GRADIENT LOCALLY INCREASING THE SOUTH FLOW. BEHIND THE FRONT COOLER TEMPS WILL RETURN WITH TEMPS RUNNING SLIGHTLY BELOW CLIMO AVERAGES.
THE LESS LIKELY DEEP MOISTURE ADVECTION WILL BE PRESENT OVER THE LOWER ELEVATIONS. IT IS WHEN THE STORM REDEVELOPS ACROSS THE HIGH PLAINS IS WHEN DISCREPANCIES BEGIN TO APPEAR. BUT DO THINK THE LOWER ELEVATIONS WEST OF THE LARAMIE RANGE WILL SEE WINTER WEATHER ADVISORY CONDITIONS SINCE SNOWFALL WILL NOT BE TOO HEAVY. AND WINDS WILL LIKELY NOT BE AS STRONG COMPARED TO THE HIGH PLAINS. ONE MORE MILD NIGHT ON TAP BEFORE THE COLD FRONT ARRIVES. UPPER TROUGH QUICKLY MOVES TO EASTERN NEBRASKA WITH NORTHWEST FLOW ALOFT OVER OUR COUNTIES.
240 AM EDT TUE MAR 22 2016 A RIDGE OF HIGH PRESSURE OVER CENTRAL PENNSYLVANIA WILL SLIDE EAST TO THE MID ATLANTIC COAST BY THIS AFTERNOON. A WARM FRONT LIFTING SLOWLY NORTH ACROSS THE GREAT LAKES WILL BRING INCREASING MID AND HIGH LEVEL CLOUDS OVER MOST AREAS OF THE STATE TODAY. A POTENT AREA OF LOW PRESSURE AND SOUTHWARD TRAILING COLD FRONT WILL APPROACH FROM THE MISSISSIPPI VALLEY LATE IN THE WEEK.
A WARMER DAY WITH MANY COMMUNITIES COMING IN AROUND 10 DEGREES WARMER THAN YESTERDAY.
THE UPPER LEVEL PATTERN TRANSITIONS FROM RIDGING TO MORE OF A ZONAL FLOW. THE STRONG WARM AIR ADVECTION AHEAD OF THE APPROACHING LOW PRESSURE SYSTEM WILL ALLOW FOR DRY. WEAK ENERGY KICKING OUT AHEAD OF THE MAIN LOW PRESSURE SYSTEM WILL INFLUENCE THE REGION TUESDAY. THE MAIN LOW PRESSURE SYSTEM AND GREATEST FORCING THEN TRACKS ACROSS THE CENTRAL PLAINS STATES LATE TUESDAY THROUGH WEDNESDAY. THE HIGHEST SNOW CHANCES WILL REMAIN ALONG AND SOUTH OF I-90.
UPPER AIR ANALYSIS THIS MORNING SHOWED A TROUGH OVER THE SOUTHEASTERN US AND A RIDGE OVER THE ROCKIES WITH NORTHWESTERLY FLOW ACROSS TEXAS. HIGH PRESSURE WAS CENTERED TO OUR EAST AND WINDS ACROSS OUR CWA WERE FROM THE SOUTHEAST TO SOUTHWEST. THE UPPER RIDGE WILL MOVE ACROSS THE MIDDLE OF THE COUNTRY DURING THIS PERIOD. A TROUGH WILL MOVE IN BEHIND IT AND STRETCH FROM THE CENTRAL ROCKIES TO THE BAJA PENINSULA BY THE END OF THE PERIOD.
307 AM EDT TUE MAR 22 2016 A WEAK LOW PRESSURE SYSTEM AND WARM FRONT WILL APPROACH LATER IN THE DAY TODAY AND BRING INCREASING CLOUDS. THIS LOW MOVE ACROSS THE REGION OVERNIGHT BRINGING SOME LIGHT SNOW TO THE MOUNTAINS AND A FEW RAIN SHOWERS FURTHER SOUTH.
/ISSUED 915 PM EDT MON MAR 21 2016/ HIGH PRESSURE CENTERED OVER LA WILL DRIFT EAST OVERNIGHT AND WITH INITIALLY COLD ADVECTION FOLLOWED BY RADIATIONAL COOLING AS THE WINDS DECREASE OVER INLAND AREAS. AT THE BEACHES THE SEAS ARE ON THE DECLINE WITH THE HIGH SEAS AND RIP CURRENT ADVISORIES EXPIRING THIS EVENING.
358 AM EDT TUE MAR 22 2016 A QUIET WEATHER PATTERN WILL CONTINUE THROUGH THE SHORT TERM UNDER WEAKENING HIGH PRESSURE INFLUENCE. CLEAR SKIES AND LIGHT WINDS WILL RESULT IN COLD TEMPERATURES IN THE LOWER TO MID 30S FOR MOST AREAS THIS MORNING. LEANED TOWARD THE WARMER SIDE OF GUIDANCE FOR HIGHS EACH DAY. AND SLIGHTLY COOLER FOR LOWS TONIGHT UNDER CLEAR SKIES.
Otherwise dry through the remainder of the week with warmer temperatures. Cold air spilling into the back side of the low over the western U. Another cool day expected today under the cooler airmass but more sunshine some valley locations will allow them to see slightly warmer temperatures. Shower chances will end by this evening as upper ridging amplifies along the coast. Generally fair skies are expected through the coming week as the upper ridge is forecast to remain in control over the Western U.
AS THE JET MAX PASSES THIS AFTERNOON THE LOW LEVEL WIND FIELD WILL BECOME INCREASINGLY STRONGER FROM THE EAST NORTHEAST. MODELS GAINING CONSISTENCY ON THE PATH AND STRENGTH OF THE UPPER LOW AND ON SHOWING DECENT INSTABILITY UPSTAIRS HELPING WITH A DEVELOPING DECENT SNOW BAND WEDNESDAY.
Northwesterly flow will keep scattered to numerous snow showers going, especially over the higher terrain on Wednesday, with accumulations remaining on the light side.
/ISSUED 343 AM CST FRI FEB 12 2016/ ANOTHER WARM DAY IS EXPECTED TODAY BEFORE A WEAK FRONT BRINGS SLIGHTLY COOLER AIR SATURDAY.
THOUGH WARMER AIR WILL BEGIN TO ADVECT INTO OUR SOUTH CENTRAL SOUTH DAKOTA ZONES WHERE HIGHS WILL TOP OUT IN THE MID AND UPPER 20S.
This will allow northeast flow to pick up today across west central Texas, and slightly cooler temperatures across the Big Country. Highs will be in the upper 60s to near 70 degrees along and north of I-20, and in the low to mid 70s for the rest of the area. With clear skies, and a slightly cooler air mass moving into the area tonight, lows will drop into the lower 30s in valleys and low lying areas and upper 30s elsewhere.
HIGH PRESSURE WILL DROP SOUTH ACROSS MN AND IA TONIGHT AND MOVE SOUTHWEST OF WI ON SATURDAY. THERE IS SOME UNCERTAINTY WITH LOW TEMPERATURES TONIGHT AS SKIES WILL BE CLEAR BUT THE WIND WILL PROMOTE MIXING AND WARMER TEMPERATURES.
TEMPS WILL BE A LITTLE COOLER WITH ONSHORE FLOW BUT STILL WELL ABOVE NORMAL.
A COLD FRONT WAS MOVING INTO EASTERN IOWA WITH TEMPERATURES AHEAD OF THE FRONT IN THE LOWER 20S. WITH THE HIGH PRESSURE RIDGE STILL TO THE WEST OF THE CWA OUR WINDS WILL REMAIN AT LEAST 10 MPH FOR MUCH OF THE NIGHT. YET TRANSIENT ARCTIC HIGH PRESSURE WILL BEGIN THE PERIOD SATURDAY. THIS HIGH IS ON THE MOVE.
WITH LOWS IN THE LOWER/MID 40S FOR SE GA/NE FL AND 45-50 FOR NORTH-CENTRAL FL. SUNNY AND CHILLY CONDITIONS WILL PREVAIL SATURDAY AS STRONG HIGH PRESSURE BUILDS IN FROM THE NORTHWEST. HIGHS SATURDAY WILL RANGE FROM THE LOWER/MID 50S FOR SE GA/NE FL TO THE UPPER 50S/LOWER 60S FOR NORTH-CENTRAL FL.
THE LOWER TREASURE VALLEY NEAR AND WEST OF ONTARIO. OVER THE LOWER ELEVATIONS OF NRN MALHEUR COUNTY.
COOLER CONDITIONS ARE FORECAST FOR TODAY AND SATURDAY.
WE ARE ALREADY SEEING THE EFFECTS OF A 1044 MB HIGH PRESSURE NOSING OUT OF CANADA THIS MORNING WITH TEMPERATURES FALLING ACROSS THE NORTHERN PLAINS AND SOUTHERN CANADA. AND WITH TEMPERATURES WARMER THAN -10C THROUGHOUT THAT LAYER. CONCERNED THIS COULD GENERATE SOME FREEZING DRIZZLE SATURDAY AM FOR THE MISSOURI VALLEY. FEATURING A RIDGE OVER THE FAR WESTERN CONUS WITH A TROF IN THE EAST.
A COLD FRONT WILL SLIP ACROSS THE AREA THIS AFTERNOON WITH ANY CLOUDS DIMINISHING IN ITS WAKE WHILE WINDS TREND BECOME LIGHT NORTHERLY. BUT A CHANGE IS ON THE WAY AS ANOTHER DRY COLD FRONT WILL PUSH THROUGH LATE TODAY. A COOLER START TO TOMORROW AS COLD AIR ADVECTS BACK INTO THE REGION OVERNIGHT. THIS LATEST FRONT WILL USHER IN A COOLER AND DRIER WEEKEND.
INCREASING WESTERLY FLOW TODAY WILL CAUSE THE LOW CLOUDS TO ERODE QUICKLY FROM WEST TO EAST. /ISSUED 551 AM CST FRI FEB 12 2016/ SHORT TERM SURFACE RIDGING OVER THE GULF IS WEAKENING AND WILL GIVE WAY IN RESPONSE TO A STRONG LARGE ARCTIC HIGH PRESSURE RIDGE CENTER THAT WILL SINK SOUTH-SOUTHEAST OUT OF SASKATCHEWAN AND MANITOBA CANADA INTO MINNESOTA THROUGH TONIGHT. THE UPPER PATTEN SHOWS THE MAIN UPPER LOW WELL TO THE NORTH OVER NORTHERN ONTARIO MOVING TOWARD QUEBEC.
345 PM CST FRI FEB 12 2016 THE SHORT TERM PERIOD WILL SEE QUIET WEATHER AS A STRONG HIGH PRESSURE AREA BUILDS IN FROM THE NORTH THROUGH THE NIGHT. BUT WILL STILL BE WELL BELOW NORMAL TONIGHT AND TOMORROW THANKS TO THE HIGH PRESSURE PROVIDING US WITH MOSTLY CLEAR SKIES AND CALM WINDS TONIGHT.
With the sfc fnt pushing swd today as the ridge builds into the area, expect a brief warming period this morning for srn portions of the CWA.
THE SYSTEM'S COLD FRONT IS CURRENTLY MOVING THROUGH WESTERN WASHINGTON AND OREGON. EXPECT THE POTENTIAL FOR ISOLATED SHOWERS TO PERSIST AHEAD OF THE MAIN PRECIP BAND ASSOCIATED WITH THE COLD FRONT. PROGRESSIVE WEST/NORTHWEST FLOW CONTINUES AS HIGH PRESSURE TO THE SOUTH SHIFTS OVER SOUTHERN CA/NV/AZ.
OF COURSE NORTH OF THE BOUNDARY TEMPERATURES WILL BE RUNNING COOLER EVEN UNDER CLEAR SKIES WITH PREVIOUSLY FORECAST TEMPS LOOKING GOOD. A COLD FRONT CURRENTLY RESIDES OVER MY SOUTHERN ZONES JUST NORTH OF THE HIGHWAY 84 CORRIDOR. BOTH THE LOW CLOUDS AND PATCHY FOG WILL DISSIPATE OVER THE SOUTHERN HALF OF THE FORECAST AREA. BOTH HIGH PRESSURE AND COLD ADVECTION WILL INCREASE ACROSS THE FORECAST AREA ON SATURDAY.
1043 AM MST FRI FEB 12 2016 FORECAST DISTRICT SHOULD EXPERIENCE GENERALLY DRY CONDITIONS IN COMBINATION WITH COOLER TEMPERATURES IN WAKE OF COOL SURGE WHICH IS CURRENTLY OVER EAST-CENTRAL NEW MEXICO EARLY THIS MORNING. COOLER SOUTHEASTERLY TO EASTERLY FLOW IS EXPECTED TO DEVELOP OVER EASTERN SECTIONS TODAY AND TONIGHT ALLOWING MAXIMUM TEMPERATURES THIS AFTERNOON TO RUN SOME 5F TO 13F COOLER OVER EASTERN SECTIONS WHILE WESTERN PORTIONS OF THE FORECAST DISTRICT SHOULD EXPERIENCE TEMPERATURES WITHIN A CATEGORY OR SO OF READINGS NOTED PREVIOUS 24 HOURS. WITH A RIDGE SITTING OFF THE WEST COAST. ON TUE THE UPR RIDGE WL MOVE OVER THE WRN U. THU AND UPR TROF IS FORECAST TO MOVE OVR CA.
256 PM MST FRI FEB 12 2016 UPPER RIDGE MIGRATES EASTWARD THROUGH THE ROCKIES TONIGHT AND SATURDAY. MIGHT ALSO SEE SOME LOWER CLOUDS WRAP BRIEFLY WESTWARD AROUND THE LOW INTO EASTERN PUEBLO/EL PASO COUNTIES. LEE TROUGH KICKS EASTWARD TOWARD THE KS BORDER ON SAT AS FLOW ALOFT INCREASES AHEAD OF WAVE DROPPING INTO THE NORTHERN ROCKIES. WITH WARMER WESTERLY FLOW ACROSS ALL THE AREA BY AFTERNOON.
THE WIND WILL GRADUALLY DIMINISH FROM WEST TO EAST TONIGHT AS THE HIGH SETTLES IN OVER THE WEST.
THE CLOUD COVER STREAMING IN FROM THE NW IS ON THE BACK SIDE OF THE TROUGH THAT ENCOMPASSES THE EASTERN HALF OF THE U. TEMPS WILL BE ABLE TO REACH NEAR SEASONABLE VALUES IN THE LOWER 50S. TO UPPER 40S IN SOUTHERN MIDDLE TN BEFORE WINDS BECOME NORTHWESTERLY WITH AN APPROACHING COLD FRONT.
1024 AM PST FRI FEB 12 2016 A cold front will pass through the region today with continued precipitation chances and slightly lower snow levels.
DO LIKE THE MAV AND ECMWF GUIDANCE WHICH HAS SLIGHTLY WARMER AFTERNOON HIGHS.
INCREASING WESTERLY FLOW TODAY WILL CAUSE THE LOW CLOUDS TO ERODE QUICKLY FROM WEST TO EAST.
942 AM MST FRI FEB 12 2016 AS OF 16Z, A WARM FRONT WAS ANALYZED TO ROUGHLY STRETCH FROM GTF TO BIL. STILL EXPECTING LIGHT PRECIP TO CONTINUE INTO THIS AFTERNOON ALONG AND NORTH OF THE WARM FRONT AS IT LIFTS NE THROUGH THE DAY. CURRENT AND POINT SOUNDINGS AS WELL AS ANALYSIS OF RADAR/DUAL POL DATA AND SFC OBS SUGGESTS MOST OF THE PRECIP IS SNOW ALONG THE HI- LINE WITH MOSTLY RAIN IN THE LOWER ELEVATIONS ALONG AND SOUTH OF A GREAT FALLS TO LEWISTOWN LINE. HOWEVER, WITH SFC TEMPS JUST BELOW FREEZING IN A FEW SPOTS, SOME FREEZING RAIN STILL CANNOT BE RULED OUT THIS MORNING. AREAS OF LIGHT RAIN AND/OR LIGHT SNOW CONTINUE TO SPREAD ACROSS THE AREA THIS MORNING IN THE WAKE OF A WARM FRONTAL PASSAGE.
/issued 327 AM CST FRI FEB 12 2016/ An upper trough remains over the eastern conus and an upper ridge over the western conus putting the CWA under northwest flow aloft.
213 PM CST FRI FEB 12 2016 Visible imagery shows some energy still rounding the base of the mean long wave trof, with clouds affecting all but the far south/west parts of our FA. as upper energy starts to spill southward out of the High Plains.
NO SIGNIFICANT CHANGES WERE NEEDED WITH THE MIDDAY FORECAST UPDATE AS COLD HIGH PRESSURE YIELDS LIGHT WINDS. LOWERED HIGH TEMPERATURES A FEW DEGREES FROM THE PREVIOUS FORECAST WITH LITTLE TO NO TEMPERATURE RECOVERY EXPECTED TODAY AS ARCTIC HIGH PRESSURE BUILDS ACROSS NORTH DAKOTA. POSSIBLY MIXED WITH OR CHANGING TO FREEZING RAIN FOR A BRIEF TIME IN THE SOUTHWEST. ARCTIC HIGH PRESSURE WAS CENTERED OVER NORTHERN SASKATCHEWAN. AS THE HIGH MOVES SOUTHEAST. FORECAST BUFKIT SOUNDINGS INDICATE A TEMPERATURE PROFILE THAT FAVORS LIGHT SNOW MIXING WITH OR CHANGING OVER TO FREEZING RAIN IN THE FAR SOUTHWEST - JUST AS THE ISENTROPIC LIFT BEGINS TO WEAKEN LATE TONIGHT.
BUT SOME OF THE HIGHEST DEW POINTS IN RECENT WEEKS SHOW THAT PLENTY OF GULF MOISTURE REMAINS.
Temperatures will struggle into the low 20s far northwest to the lower 30s far southeast this afternoon, but once the winds start to increase, temperatures and wind chills will start to drop off later this afternoon. Mostly clear skies will help the temperatures drop down into the low single digits as the sun rises on Saturday.
TODAY THROUGH SATURDAY NIGHT BROAD TROUGH CONTINUES ACROSS THE ERN CONUS WITH NWRLY FLOW PERSISTING ACROSS THE NCNTRL PLAINS. UPPER RIDGING SITS ACROSS THE WRN CONUS WITH WARMER LOW LEVELS. BUT SOME AREAS ACROSS NW/CNTRL SD MIGHT SEE LIGHT FZRA IN THE AFTN HOURS IF 800MB WARMER LAYER DOESNT COOL QUICKLY ENOUGH.
1051 AM CST FRI FEB 12 2016 COLD FRONT DRAPED ACROSS THE REGION FROM NEAR JACKSONVILLE TX. A NEARLY STATIONARY COLD FRONT OVER EAST TEXAS AND NORTHWEST AND NORTH CENTRAL LOUISIANA WILL SHIFT SOUTH DURING THE AFTERNOON WITH NORTHERLY WINDS OF 5-10 KNOTS IN ITS WAKE WITH LIGHT AND VARIABLE TO LIGHT SOUTH LESS THAN 7 KNOTS PRIOR TO ITS PASSAGE. /ISSUED 409 AM CST FRI FEB 12 2016/ A SURFACE COLD FRONT REMAINS STALLED JUST SOUTH OF INTERSTATE 20. THE FRONT SHOULD FINALLY MOVE SOUTH OF THE CWA BY THIS AFTERNOON AS A COOLER AIRMASS BEGINS TO MOVE INTO THE REGION.
An upper ridge axis stretched from the desert southwest into the northern Rockies. At the surface, area observations showed a cold front pushing south through the northern plains and into the forecast area. Highs today are expected to be cooler due to the persistent cold air advection. Lows tonight should range from around 5 above over northeast KS to the mid teens in central KS as the center of high pressure passes to the northeast of the forecast area across IA. On Saturday arctic high pressure will move across the central US bringing cooler temperatures to the area.
SCT SC DEVELOPING ON W/SW LOW LVL FLOW ACRS THE REGION WITH A COLD FRONT POISED ACRS NRN LA. A COLD FRONT WILL SLIP ACROSS THE AREA THIS AFTERNOON WITH ANY CLOUDS DIMINISHING IN ITS WAKE WHILE WINDS TREND BECOME LIGHT NORTHERLY. BUT A CHANGE IS ON THE WAY AS ANOTHER DRY COLD FRONT WILL PUSH THROUGH LATE TODAY. A COOLER START TO TOMORROW AS COLD AIR ADVECTS BACK INTO THE REGION OVERNIGHT. THIS LATEST FRONT WILL USHER IN A COOLER AND DRIER WEEKEND.
A back door cold front is expected to move through Eastern Oklahoma and Northwest Arkansas today.
THE CLOUD COVER STREAMING IN FROM THE NW IS ON THE BACK SIDE OF THE TROUGH THAT ENCOMPASSES THE EASTERN HALF OF THE U. TEMPS WILL BE ABLE TO REACH NEAR SEASONABLE VALUES IN THE LOWER 50S. TO UPPER 40S IN SOUTHERN MIDDLE TN BEFORE WINDS BECOME NORTHWESTERLY WITH AN APPROACHING COLD FRONT. A COLD FRONT WILL DROP SOUTHEAST FROM TN THIS AFTERNOON SHIFTING WINDS TO THE NW AT 10-12KT WITH GUSTS NEAR 16KT.
WINDS OUT OF THE N/NW WILL INCREASE AND BE GUSTY THIS EVENING AND INTO THE MORNING HOURS AS HIGH PRESSURE SLIDES SE TOWARD MIDDLE TN.