Aikyam-Lab/Synoptic-Bench huggingface dataset:
AN UPPER TROUGH WILL CONTINUE TO CARVE OUT OVER THE WESTERN STATES INTO THIS WEEKEND. WITH AN UPPER LOW CLOSING OFF OVER CALIFORNIA BY SUNDAY. ANOTHER UPPER TROUGH WILL SLIDE SOUTHEAST OUT OF CANADA. THIS COULD RESULT IN A WINTRY MIX OF LIGHT FREEZING RAIN. THE MAIN IMPACT WILL BE THE POTENTIAL FOR SLICK ROADS DUE TO THE SNOW ACCUMULATION AND ANY SLEET/FREEZING RAIN IN THE SOUTH.
ALBEIT LIGHT RAIN SHOWERS ALONG THE LOWER KEYS AND AND THE ADJACENT NEARSHORE GULF AND ATLANTIC WATERS. EAST-WEST ORIENTED AREA OF HIGH PRESSURE (1041 MB) IS CENTERED IN THE OHIO VALLEY INTO THE MID ATLANTIC STATES. NORTH-SOUTH ORIENTED COASTAL TROUGH IS DRAPED JUST OFFSHORE OF THE FLORIDA EAST COAST AND NEAR THE UPPER KEYS.
FURTHER TO THE NORTH WHERE TEMPERATURES ARE RUNNING 3 TO 5 DEGREES ABOVE FREEZING. IT LOOKS LIKE PERIODS OF MAINLY LIGHT RAIN/SHOWERS WILL BE FOUND ACROSS PORTIONS OF SOUTHEAST TEXAS OVER THE WEEKEND AS A TROF AXIS DEVELOPS NEAR THE COAST AND DISTURBANCES MOVE ACROSS THE AREA ALONG A STRENGTHENING SOUTHWEST FLOW ALOFT. WHILE MOST OF THE AREA'S TEMPERATURES WILL BE WARMER THAN OBSERVED OVER THE LAST SEVERAL DAYS (RECORD LOW MAXIMUM TEMPERATURE SET YESTERDAY AT COLLEGE STATION).
NORTHERLY WINDS CONTINUE TO USHER IN COLD AIR ACROSS CENTRAL ALABAMA AND TEMPERATURES HAVE FALLEN TO NEAR OR JUST BELOW FREEZING ACROSS THE NORTHERN COUNTIES.
THIS IS ALONG A BUILDING 850MB THETA-E RIDGE NICELY DEPICTED BY THE 00Z WRF.
230 AM EST SAT FEB 28 2015 HIGH PRESSURE WILL BUILD SOUTH OF THE REGION THIS WEEKEND.
335 AM CST SAT FEB 28 2015 WV IMAGERY SHOWING A BROAD TROF THE DOMINATE FEATURE ACROSS THE CONUS THIS MORNING WITH THE JET STREAM DIPPING ALL THE WAY DOWN INTO THE SOUTHERN TIER STATES.
AND FREEZING RAIN. ALL PRECIPITATION TO TRANSITION TO RAIN LATER THIS MORNING AS TEMPERATURES RISE ABOVE FREEZING.
411 AM EST SAT FEB 28 2015 HIGH PRESSURE WILL BRING CONTINUED UNSEASONABLY COLD DRY WEATHER TO THE AREA THROUGH TONIGHT.
SURFACE OBS AND MESONET SITES INDICATE TEMPERATURES IN THE LOWER TO MID TEENS AND ANTICIPATE TEMPERATURES TO FALL SEVERAL DEGREES FURTHER OVERNIGHT. OVERNIGHT TEMPERATURES ALOFT CONTINUE TO WARM TO WHERE SNOW LOOKS UNLIKELY AREA WIDE AND THE THREAT OF A LIGHT RAIN/FREEZING RAIN MIX BECOMES MORE LIKELY. A CLOSED LOW WILL DEVELOP OFF THE SRN CA COAST THIS WEEKEND.
THINKING MOST PLACES WILL MAKE IT INTO THE LOWER TEENS ONLY. ONLY A BRIEF FEW HOURS OF TEMPS ABOVE FREEZING SATURDAY AFTERNOON. ANYTIME YOU SEE AN UPPER LOW EJECTING OUT OF THE FOUR CORNERS REGION WITH DEEP SOUTHWEST FLOW AIMED TOWARD THE OHIO AND TENNESSEE VALLEYS. A SLUG OF PRECIPITATION WILL SPREAD ACROSS THE AREA ON SUNDAY AS A WARM FRONT GETS DRAWN TO THE NORTH INTO OUR REGION. THERE MAY BE SOME PATCHY FREEZING RAIN SUNDAY MORNING WITH SURFACE TEMPS LIKELY SLOW TO WARM ABOVE FREEZING WHILE STRONG WARM NOSE PUNCHES IN ALOFT.
WATER VAPOR IMAGERY THIS EVENING SHOWING AN UPPER LEVEL LOW CIRCULATION POSITIONED NEAR BEND OREGON. MOST OF THE PRECIPITATION DEVELOPMENT THROUGH 04Z HAS BEEN CLOSE TO THE LOW CENTER. THESE AREAS WILL SEE RAIN/SNOW CONTINUE THROUGH THE NIGHT AS THE UPPER LOW CENTER TRACKS TO THE SSW. THINKING THIS SLIGHT WESTWARD PULL ON THE LOW WILL LESSEN PRECIPITATION CHANCES OVER THE WEST-CENTRAL AND BOISE MTNS AND MUCH OF THE SNAKE RIVER PLAIN AND THUS HAVE LOWERED PRECIP CHANCES IN THESE ZONES. UPPER LOW WILL MOVE SOUTH ALONG THE CASCADES TONIGHT AND SATURDAY MORNING. THE UPPER LOW WILL BRING ANOTHER COUPLE INCHES NEW SNOW TO EASTERN OREGON TONIGHT AND EARLY SATURDAY. AS THE UPPER LOW EXITS SOUTH.
LATEST SHORT TERM TRENDS SUGGEST PRECIPITATION WHICH HAS OCCURRED OVER NORTHEAST TEXAS AND WESTERN SECTIONS OF THE LOWER MISSISSIPPI VALLEY SHOULD REMAIN JUST TO THE NORTHWEST OF THE FORECAST AREA TONIGHT. ANOTHER COLD FRONT IS EXPECTED TO DROP INTO THE MID SOUTH SATURDAY NIGHT INTO SUNDAY. THIS WILL RESULT IN AN INCREASE OF PRECIPITATION CHANCES WITH PERHAPS A POTENTIAL FOR FREEZING RAIN OR SLEET ACROSS PORTIONS OF NORTHEAST ARKANSAS SATURDAY NIGHT. ANY WINTRY PRECIPITATION SATURDAY NIGHT SHOULD TRANSITION OVER TO RAIN ON SUNDAY AS THE FRONT BEGINS TO MOVE BACK NORTH AS A WARM FRONT.
459 AM EST SAT FEB 28 2015 HIGH PRESSURE WILL MOVE EAST OF THE REGION TODAY. A WARM FRONT WILL DEVELOP SOUTH OF THE AREA TONIGHT. LIFT NORTH ON SUNDAY AND THEN BE FOLLOWED BY A COLD FRONT ON SUNDAY EVENING.
THIS EVENING THROUGH SATURDAY NIGHT BROAD UPPER TROUGH SPANS THE CONUS. BRINGING IN SOME WARMER AIR. EXPECT HIGHS TO RANGE FROM THE UPPER TEENS ACROSS NORTHEAST WY AND FAR NORTHWEST SD TO THE LOWER 30S ACROSS SOUTH CENTRAL SD. BUT KEPT CHANCES SLIGHT AS BEST FORCING STAYS SOUTH AND HIGH PRESSURE REMAINS OVER THE AREA.
1252 AM EST SAT FEB 28 2015 CANADIAN HIGH PRESSURE WILL BUILD INTO THE AREA OVER THE WEEKEND WITH TEMPERATURES REMAINING BELOW NORMAL. HIGH PRESSURE WILL EXTEND FROM THE OHIO VALLEY TO MID-ATLANTIC REGION TONIGHT. WIND ASSOCIATED WITH HIGH PRESSURE BUILDING NORTH OF THE REGION SHOULD HELP PREVENT FOG TONIGHT DESPITE HIGH LOW-LEVEL MOISTURE FROM THE RECENT RAIN EVENT. THE WARMER LOW TEMPERATURE GUIDANCE MAY VERIFY BECAUSE OF WIND. BUT WE KEPT THE FORECAST CONSISTENT AND LEANED TOWARD THE COOLER MAV MOS BECAUSE OF THE COLD AIR AND SNOW COVER UPSTREAM. THERE IS SOME POSSIBILITY OF LIGHT FREEZING RAIN ACROSS THE NORTH MIDLANDS. CONFIDENCE REMAINS LOW SO ONLY INDICATED A SLIGHT CHANCE FOR LIGHT FREEZING RAIN.
Upper-level trough currently centered along US/Can border will continue to push southward through MT tonight and tomorrow morning. Expect mix of VFR/MVFR ceilings to persist thru the overnight period, with 06Z TAFs backing off from the earlier forecast of more widespread MVFR/IFR conditions and -SN ahead of the trough axis. All TAF sites should be back to VFR by late morning/midday Saturday as the trough exits into eastern MT/WY. As for snow accumulations the lower elevations of the east slopes should get no more than an inch while mountains from the Rocky Mountain Front to southwest Montana could see up to 3 inches. Sunday is expected to be mostly sunny and not as cold as a weak upper ridge moves southeast through Montana.
Lower ceilings (MVFR/IFR) and an increase in -SN coverage are forecast after about 03Z as additional moisture arrives ahead of an upper-level trof that will track NW-to- SE across the state tonight and Sat morning. Forecast models have been consistent in showing the the trof clearing out of the region starting around 12Z tomorrow vcnty KCTB/KHVR and vcnty KBZN by about 18Z. Conditions will return to VFR following trof passage. As for snow accumulations the lower elevations of the east slopes should get no more than an inch while mountains from the Rocky Mountain Front to southwest Montana could see up to 3 inches. Sunday is expected to be mostly sunny and not as cold as a weak upper ridge moves southeast through Montana.
SATELLITE SHOWS UPPER LOW CENTERED OVER WESTERN OREGON THIS EVENING. THE LOW WILL MOVE SOUTH OVERNIGHT INTO CALIFORNIA AND NEVADA ON SATURDAY. RAIN AND HIGHER ELEVATION SNOW WILL GRADUALLY MOVE SOUTH WITH THE LOW. SIGNIFICANTLY COOLER TOMORROW AS COMPARED TO THE PAST SEVERAL DAYS. UPPER RIDGE OVER THE AREA SATURDAY NIGHT WITH CLEAR SKIES AND LIGHT WINDS. SUNDAY WILL BE SUNNY AS HIGH PRESSURE REMAINS OVER THE REGION. WITH THE PRECIP BAND OVER EAST-CENTRAL AND CENTRAL OREGON OVERNIGHT AND LOW TEMPS FALLING BELOW FREEZING, EXPECT SNOW ACCUMULATIONS TO CONTINUE ACROSS THIS AREA. COOLER AND DRIER AIR WILL MOVE INTO THE REGION LATE TONIGHT AND SATURDAY. THESE WINDS LOOK TO BE STRONGEST ACROSS THE LOWER COLUMBIA BASIN, THE YAKIMA VALLEY AND THE SIMCOE HIGHLANDS.
FCST SOUNDINGS SHOW THE WEAK LIFT IS AHEAD OF THE FULL SATURATION OF THE SOUNDING WITH LITTLE TO NO LIFT AND DRYING IN THE MID LEVELS OCCURRING NOT LONG AFTER THE LOW LEVELS SATURATE.
A COASTAL TROUGH REMAINS NEARLY STATIONARY NEAR THE COAST WITH LIGHT RAIN OVERRUNING THE COLD AIRMASS SITTING ACROSS S TX. MODELS PROG THE COASTAL TROUGH TO SHIFT SLIGHTLY INLAND OVERNIGHT WHICH WILL MAKE MN TEMPS TRICKY FOR THE COASTAL BEND. MOS GUIDANCE PROGS TEMPS TO GENERALLY STAY STEADY ACROSS THE W AND N PORTIONS OF THE CWA AND SLIGHTLY INCREASE BY A COUPLE OF DEGREES ACROSS THE COASTAL BEND IN RESPONSE TO THE TROUGH MVG INLAND. IF THE TROUGH REMAINS ALONG THE COAST. WILL CONTINUE THE SMALL CRAFT ADVISORY ACROSS THE BAYS AND COASTAL WATERS DUE TO THE COASTAL TROUGH PROVIDING A FAIRLY TIGHT GRADIENT ACROSS THE AREA.
CURRENTLY THE AREA IS UNDER A PRETTY DRY AIR MASS THERE WILL LIKELY BE INSTANCES ACROSS THE AREA WHERE PRECIP WILL WET BULB COLD ENOUGH FOR FREEZING RAIN IN MOST AREAS. THE LL JET LOOKS TO BE STRONG ENOUGH TO BRING MOISTURE NORTHWARD AND SATURATE THE LOWER LEVELS. ENOUGH EVAPORATIVE COOLING WILL TAKE PLACE SATURDAY NIGHT FOR A FEW HUNDREDTHS OF FREEZING RAIN.
1145 PM CST FRI FEB 27 2015 COLD ARCTIC HIGH PRESSURE BEGINNING TO SLIDE AWAY FROM THE STATE TONIGHT.
1110 PM CST FRI FEB 27 2015 AN AREA OF HIGH PRESSURE AND DRY AIR WILL KEEP THE NORTHLAND PRECIP FREE THROUGH MUCH OF THE SHORT TERM PERIOD. CLOUDS WILL GRADUALLY INCREASE FROM WEST TO EAST THROUGH THE DAY SATURDAY AS A TROUGH MOVES TOWARD THE NORTHLAND. A LOW PRESSURE TROUGH WILL MOVE THROUGH THE NORTHLAND SATURDAY NIGHT AND SUNDAY. THE TROUGH COULD PRODUCE A DUSTING OF SNOW AS IT MOVES THROUGH THE REGION SATURDAY NIGHT AND SUNDAY.
216 AM EST SAT FEB 28 2015 HIGH PRESSURE WILL BRING CONTINUED UNSEASONABLY COLD DRY WEATHER TO THE AREA TONIGHT THROUGH SATURDAY NIGHT. EXPECT A QUICK DROP IN TEMPERATURE ONCE AGAIN SATURDAY EVENING WITH HIGH PRESSURE STILL IN CONTROL ALLOWING FOR CLEAR SKIES AND LIGHT WINDS. WEAK AREA OF LOW PRESSURE WILL TRACK FROM THE MIDWEST ACROSS NY AND PA LATER SUNDAY.
CIGS WILL LOWER TO LIFR SATURDAY NIGHT ALONG WITH SOME PATCHY FOG AS A DEVELOPING WARM FRONT APPROACHES THE COAST. THE LATEST RAP13 AND NAM12 BOTH KEEP SURFACE WET BULB TEMPERATURES ABOVE FREEZING EXCEPT MAYBE ALONG THE FAR NORTHWEST BORDERS OF BURLESON. THIS WILL BE DETERMINED BY HOW CLOSE THE DRIZZLE AREA AND FREEZING TEMPERATURES CAN MOVE IN FROM WEST.
A FEW FLURRIES STILL POSSIBLE MAINLY NEAR THE COLORADO BORDER THIS EVENING DUE TO THE UPSLOPE PATTERN INDUCED BY THE CHEYENNE RIDGE. EXPECT TO SEE LIGHT SNOW INCREASE FROM THE SW AGAIN LATE SATURDAY AS AN IMPULSE RIDES ENE FROM AN UPPER LOW ALONG THE CALIFORNIA COAST AND SFC UPSLOPE STEPS UP A BIT IN RESPONSE TO AN INCREASING SFC PRESSURE GRADIENT MAINLY ACROSS SRN WY. MAINLY DRY SUNDAY AFTERNOON AND NIGHT AS SHORT RIDGING NOSES ACROSS THE AREA FROM COLORADO.
THIS SYSTEM WILL HELP PUSH A COLD FRONTAL BOUNDARY SOUTHEASTWARD THROUGH THE REGION SATURDAY AND SATURDAY NIGHT. TEMPERATURES ON SUNDAY SHOULD BE WARMER THAN ON SATURDAY AND CLOSER TO CLIMO NORMAL FOR THE FIRST OF MARCH.
352 AM CST SAT FEB 28 2015 ARCTIC HIGH PRESSURE IS DEPARTING OFF TO THE EAST THOUGH RIDGING REMAINS EXTENDED INTO NORTHEAST IOWA.
955 PM PST Fri Feb 27 2015 A weather system will move across California this weekend, leading to cooler and wetter weather.
1157 PM EST FRI FEB 27 2015 A CLEAR SKY AND LIGHT WIND FIELD WILL EXIST OVERNIGHT AND INTO SATURDAY UNDER THE INFLUENCE OF STRONG HIGH PRESSURE AND A DEEP DRY LAYER. WITH STRONG HIGH PRESSURE BUILDING THROUGH THE NORTHERN OHIO VALLEY. CONFIDENCE IS HIGH LOCATIONS SOUTH OF EIGHT MILE WILL DROP INTO THE -5 TO -10 F RANGE (SLIGHTLY WARMER CITY OF DETROIT). JET MAX NOTED ON WATER VAPOR ALIGNED ALONG THE NORTH SLOPE OF ALASKA IS PROGGED BY THE 12Z SUITE TO DIG SOUTH ALONG THE EASTERN PERIPHERY OF THE WESTERN UNITED STATES RIDGE.
A STORM SYSTEM WILL BRING SHOWERS AND COOLER TEMPERATURES TO THE AREA STARTING THROUGH THE SATURDAY NIGHT.
THIS LOWERS THE CHANCE OF RAIN FOR THE LATTER PART OF THE WEEKEND THAN PREVIOUSLY FORECAST.
A CHANGEOVER TO SOME LIGHT SLEET AND EVENTUALLY LIGHT FREEZING RAIN AND/OR FREEZING DRIZZLE WILL OCCUR FROM SOUTH TO NORTH SATURDAY AFTERNOON AND EVENING. ALTHOUGH THE FREEZING RAIN/DRIZZLE IS EXPECTED TO BE LIGHT.
412 AM EST SAT FEB 28 2015 HIGH PRESSURE RIDGE WILL REMAIN OVER THE AREA THROUGH EARLY SUNDAY.
WARMER AND MORE MOIST AIR WILL START TO RETURN DURING THE PERIOD. SO WILL KEEP POPS ON THE LOW SIDE. TEMPS MAY BE COLD ENOUGH MAINLY NORTHEAST ZONES GIVEN LINGERING SNOW COVER THERE AND ALSO SW NC FOR THE PRECIP TO BE IN THE FORM OF FREEZING RAIN OR FREEZING DRIZZLE.
333 AM CST SAT FEB 28 2015 SOME WEAK CAA IS CONTINUING THIS MORNING IN THE WAKE OF A COLD FRONT THAT IS CURRENTLY OVER THE CENTRAL GULF. TEMPERATURES THIS MORNING ARE IN THE LOW 30S IN THE CLOUD FREE AREAS OF CENTRAL LOUISIANA AND IN THE MID AND UPPER 30S WHERE CLOUDS HAVE MOVED BACK IN ACROSS EAST TEXAS AND WESTERN LOUISIANA. THE NEXT COLD FRONT IS FORECAST TO MOVE INTO CENTRAL LOUISIANA AND THE LAKES REGION OF TEXAS TOMORROW NIGHT AND THIS WILL FURTHER INCREASE THE RAIN AND ISOLATED THUNDER CHANCES ACROSS THESE AREAS.
FREEZING DRIZZLE CONTINUES TO AFFECT THE SOUTHERN EDWARDS PLATEAU AND HILL COUNTRY WHILE LIGHT RAIN/DRIZZLE AFFECTS THE REMAINDER OF SOUTH CENTRAL TEXAS. WITH TEMPERATURES IN THE UPPER 20S AND LOWER 30S EARLY THIS MORNING AND EXPECTED TO SLOWLY COME OUT FROM THE FREEZING MARK. BRIDGES AND OVERPASSES. TEMPERATURES SHOULD BE IN THE MID 30S WHILE REACHING THE LOWER 40S BY MID AFTERNOON.
319 AM EST SAT FEB 28 2015 HIGH PRESSURE CENTERED OVER OHIO WILL MOVE SLOWLY EAST TO PENNSYLVANIA AND NEW YORK BY THIS EVENING. LOW PRESSURE OVER THE OKLAHOMA PANHANDLE TODAY WILL MOVE ACROSS THE LOCAL AREA ON SUNDAY.
431 AM EST SAT FEB 28 2015 HIGH PRESSURE BUILDS INTO THE AREA THROUGH TONIGHT. A COLD FRONT WILL PASS THROUGH THE AREA SUNDAY NIGHT.
12Z MODELS SHOW THAT THE HIGH WILL MOVE EAST INTO WESTERN PENNSYLVANIA. EVEN THOUGH THE HIGH WILL BE MOVING AWAY FROM THE REGION. DUE TO THIS LOWERED THE PRECIPITATION CHANCES AND SNOW AMOUNTS ACROSS NORTHEAST IOWA AND SOUTHWEST WISCONSIN.
DEW POINTS THIS AFTERNOON AT PEAK MIXING REMAIN IN THE LOWER TO MIDDLE 30S. AS A WEAK SFC WARM FRONT FORMS IN OR NEAR THE AREA. INCREASING SOUTHERLY FLOW IS EXPECTED TUESDAY NIGHT AHEAD OF A TROUGH APPROACHING FROM THE NORTHWEST. WILL LIKELY SEE TEMPERATURES SLIGHTLY WARMER ON THE NORTH SIDE OF THE BUFFALO RIDGE. AS THE TROUGH APPROACHES. COOLER AIR MOVES INTO THE THE REGION BEHIND THE TROUGH. THOUGH MODELS DEBATING ON HOW MUCH COOLER AIR MOVES INTO THE REGION. WHILE THE GFS IS 3 TO 5 DEGREES WARMER. WHILE THE ECMWF LINGERS THE COOLER AIR THROUGH THE EXTENDED.
WITH THE ONLY EXCEPTION BEING THE COUNTIES NEAR THE LOWER TENNESSEE RIVER VALLEY. WESTERLY WINDS WERE PROVIDING THE WARMER MIXING ACROSS THE DELTA. THE MIDSOUTH WILL REMAIN SANDWICHED BETWEEN AN UPPER RIDGE OVER THE WEST AND THE SIGNIFICANT TROUGH OVER THE EAST TODAY AND TONIGHT.
TODAY THROUGH WEDNESDAY NIGHT WATER VAPOR SHOWS LARGE AMPLITUDE RIDGE OVER THE ROCKIES/PLAINS. HIGH PRESSURE HAS SHIFTED INTO THE UPPER MIDWEST WITH DEEPENING LEE TROF ALONG THE ROCKY MOUNTAIN FRONT. LEE TROF WILL ADVANCE EWD INTO THE WRN DAKOTAS BY AFTN. THICKNESS RIDGE PASSING OVERHEAD ALONG WITH DOWNSLOPE FLOW WILL RESULT IN ANOTHER WARM DAY WITH PLENTY OF RECORD HIGHS EXPECTED.
THIS TROUGH SHOULD BE NOTHING BUT A WIND SHIFT AS IT MIXES S ACROSS THE REMAINDER OF E TX AND N LA TUESDAY MORNING. BEFORE SFC RIDGING BUILDS S INTO THE REGION IN ITS WAKE.
CENTRAL ALABAMA WAS LOCATED ON THE BACK SIDE OF AN UPPER TROUGH AND ANOTHER FEW DISTURBANCES WILL ROTATE AROUND THIS TROUGH THE NEXT 24 HOURS. ADDED MENTION OF THE LOWER CEILINGS AT BHM/EET/ASN/ANB.
/ISSUED 357 PM CST MON JAN 26 2015/ FAIRLY BENIGN WEATHER EXPECTED FOR THE NEXT FEW DAYS AS AN UPPER LEVEL RIDGE OF HIGH PRESSURE TRANSLATES ACROSS THE REGION. A COLD FRONT IS PROGGED TO MOVE ACROSS THE SRN HIGH PLAINS ON WEDNESDAY. WITH COOLER TEMPS ONCE AGAIN FOR THE LATTER PART OF THIS WEEK INTO THE WEEKEND.
UPPER LEVEL RIDGING IS KEEPING IT MILD FOR THE REGION. NWS GLASGOW HAS BROKEN THE HIGH TEMPERATURE RECORD FOR TODAY. THIS RIDGE IS BREAKING HIGH TEMPERATURE RECORDS FROM OKLAHOMA CITY TO THE PAC NW. WE START OUT WITH A RIDGE FROM EL PASO NW TOWARDS SEATTLE. SOME MID TO UPPER LEVEL MOISTURE COMING ACROSS THE TOP OF THE RIDGE WITH SOME MID LEVEL CLOUDINESS COMING ACROSS THE ROCKIES. DROP TO AROUND 10 DEGREES C TOMORROW AND THEN DROP WITH A COOL FRONT ON TUESDAY NIGHT INTO WEDNESDAY INTO THE LOWER SINGLE DIGITS.
1144 PM EST MON JAN 26 2015 LOW PRESSURE OFF THE CAROLINA COAST WILL MOVE UP THE EAST COAST TONIGHT AND DEEPEN INTO A NOREASTER ON TUESDAY. ARCTIC HIGH PRESSURE WILL BUILD IN FROM THE WEST THROUGH TUESDAY.
LOW STRATUS AND WIDESPREAD FOG REMAINS OVER THE LOWER COLUMBIA BASIN AND ADJACENT VALLEYS TONIGHT. KRDM AND KBDN WILL HAVE CIG AOA 10K FT AGL AS MID AND UPPER LEVEL CLOUDS MOVE IN AHEAD OF AN UPPER LOW AND PASSING TROUGH. PASSING WEATHER SYSTEMS WILL HELP FLATTEN THE RIDGE AND ERODE THE INVERSION SOME WITH WESTERLY WINDS BTWN 5 TO 10 KTS ACROSS WESTERN PORTION OF THE LOWER COLUMBIA BASIN.
PARTIAL CLEARING WILL BEGIN TONIGHT AS HIGH PRESSURE SETTLES IN JUST TO OUR NORTH. A WEAK RIDGE AXIS WILL STRETCH ACROSS THE MID STATE SO WE SHOULD SEE TEMPS WARM UP CLOSE TO 50 DEGREES FOR MOST AREAS.
as an upper level ridge of high pressure continues to reside over the region. Temperatures will be a few degrees cooler on Tuesday when compared to today. An upper level high pressure ridge will remain over the region through Tuesday and keep the region dry. Upper ridge axis will cross the Divide overnight resulting in continued dry and stable conditions. Afternoon readings on Wednesday will be cooler but still above average.
WITH THE HIGH PRESSURE RIDGE AXIS REMAINING OVER COLORADO TONIGHT. JUST DOWNSTREAM OF THE UPPER RIDGE AXIS. THE WARM AND DRY WEATHER WILL BE PRETTY MUCH DONE BEGINNING TUESDAY NIGHT AS THE UPPER RIDGE MOVES TO OUR EAST. THIS ALLOWS A WEAK UPPER TROUGH AND ASSOCIATED WEAK QG ASCENT TO CROSS THE CWA EARLY TUESDAY NIGHT BRINGING A SMALL THREAT OF SOME SNOW TO THE HIGH COUNTRY TUESDAY NIGHT THROUGH WEDNESDAY. NOT EXPECTING ANYTHING OF SIGNIFICANCE IN THE QPF ARENA WITH THIS SYSTEM BUT COOLER TEMPERATURES AND INCREASED WINDS ARE ANTICIPATED IN ITS WAKE.
847 PM PST MON JAN 26 2015 LOW PRESSURE CENTERED OFF THE COAST WILL MOVE TO THE NORTH ON TUESDAY CARRYING THE SHOWERS WITH IT. DRY AND COOLER ON TUESDAY WITH CLOUDS LINGERING IN SOME AREAS. A WEAK HIGH PRESSURE RIDGE WILL BRING SLIGHTLY WARMER WEATHER WITH MORE SUN ON WEDNESDAY.
201 AM EST TUE JAN 27 2015 LIGHT SNOW SHOWERS AND FLURRIES WILL REMAIN TODAY BEFORE HIGH PRESSURE DECREASES CLOUDS TONIGHT. AREA OF SNOW LIGHT SNOW IN WEAKENING DEFORMATION ZONE CONTINUES ACROSS THE RIDGES. STILL SOME LOWER VSBY IN SNOW IN THE SOUTHERN RIDGES AND A FLUFFY INCH OR TWO STILL POSSIBLE INTO THE LATE MORNING HOURS. FRIGID HIGH PRESSURE TONIGHT INTO WEDNESDAY WITH LOWS IN THE SINGLE DIGITS TO NR ZERO OVER NRN COUNTIES.
THIS EVENING THROUGH TUESDAY NIGHT UPPER ANALYSIS SHOWS A HIGH AMPLITUDE RIDGE OVER THE WESTERN HALF OF THE CONUS WITH A TROUGH OVER THE EAST RESULTING IN MILD NORTHWEST FLOW OVER THE FORECAST AREA. AT THE SURFACE WEAK HIGH PRESSURE WAS LOCATED OVER THE AREA. THE UPPER RIDGE WILL CONTINUE TO SHIFT EASTWARD TONIGHT. 850-700MB TEMPERATURES WILL BE 2-3 STANDARD DEVIATIONS WARMER THAN THE AVERAGE FOR THIS TIME OF YEAR.
OTHERWISE THE LARGE UPPER LOW OVER THE NE US WILL KEEP CLOUDS MOVING ACROSS THE TN VALLEY THRU THE FCST PERIOD.
1248 AM EST TUE JAN 27 2015 SOME VERY LIGHT SNOW OR FREEZING DRIZZLE WILL BE POSSIBLE EARLY THIS MORNING ACROSS FAR WESTERN AND NORTHWESTERN INDIANA AS WELL AS ILLINOIS. STRONG SUBSIDENCE/RAPID HEIGHT RISES WITH WEAK CONVERGENCE/PCPN SETTLING WELL SOUTH SHOULD ENSURE A DRY TUESDAY AS WESTERN/CENTRAL LAKES LOW LEVEL RIDGING BECOMES RE-ESTABLISHED. BETTER RESPONSE TO WAA EXPECTED WED AS LOW PRESSURE MOVES EAST FROM THE CENTRAL PLAINS INCREASING MIXING. SHRTWV APCHG PAC NW/SW CANADA TODAY KICKING OUT CUT-OFF LOW WEST OF BAJA. A PERIOD OF FREEZING RAIN ALSO PSBL. ANOTHER STRONG NORTHERN STREAM SYSTEM WILL DROP SOUTH INTO THE MAIN LONGWAVE TROF OVER CENTRAL NORTH AMERICA.
STRONG RIDGE ALOFT WILL REMAIN IN PLACE THROUGH TUESDAY. MOS GUIDANCE SHOWS HIGHS A FEW DEGREES WARMER ON TUESDAY WHICH MEANS WE WILL BE GETTING CLOSE TO 70 DEGREES. WILL LEAVE THE HIGH WIND WATCH IN EFFECT FOR THE SOUTHERN LARAMIE RANGE AND ARLINGTON AREAS. TEMPS WILL BE AROUND 15 DEGREES COOLER ON WED IN THE POST FRONTAL AIRMASS. ACCUMULATIONS OF 3-5 INCHES WILL BE POSSIBLE WITH THE HIGHEST AMOUNTS ON WEST FACING SLOPES.
223 AM CST Tue Jan 27 2015 Weak high pressure was over the area early this morning with a highly amplified upper level pattern across the CONUS. Missouri is currently in between the deep low affecting the northeast with an intense Winter storm and a high amplitude ridge from the southern Plains into the northern Rockies. The short term forecast will be affected by this ridge shifting eastward over the next couple of days bringing well above normal temperatures to the region. This will send a cold front towards the region, but will not push through the area until Wednesday night. Front will push through on Wednesday night, however most of the precipitation will be concentrated closer to the low which will be well to the northeast of us.
342 AM CST Tue Jan 27 2015 Mid and high cloud will decrease today as moisture at these levels heads into an upper ridge axis over the region. The same appears to be on tap Wednesday as the upper ridge remains over the region, except highs could be closer to 15 to 20 degrees above normal.
209 AM EST TUE JAN 27 2015 LOW PRESSURE OFF THE COAST OF SOUTHERN NEW ENGLAND WILL CONTINUE TO MOVE NORTHEAST. A PRESSURE RIDGE IN THE MISSISSIPPI VALLEY WILL BUILD INTO THE CAROLINAS THROUGH WEDNESDAY.
STRONG RIDGING REMAINS OVER THE ROCKIES. WEAK LEE TROUGHING STRETCHES FROM EASTERN MT INTO NW KS. 850MB TEMPS WILL ACTUALLY BE SEVERAL DEGREES WARMER THAN WHAT THEY WERE MON. TEMPS WILL PROBABLY END UP CLOSE TO WHERE THEY WERE MON JUST DUE TO THE WARMER 850MB TEMPS. WHILE THE AIR BEHIND THIS WAVE WILL BE MUCH COOLER THAN WHAT WE'VE HAD THE LAST FEW DAYS.
ENJOY THE NICE WEATHER TODAY AND TOMORROW THOUGH BEFORE A COLD FRONT WED NIGHT BRINGS US BACK DOWN TO EARTH. WED MAY BE JUST A TOUCH COOLER. A COLD FRONT WILL COME THROUGH WED NIGHT WITH A REINFORCING SHOT OF COOLER AIR THU MORNING.
An upper level high pressure system, currently over the Four Corners area, will continue to migrate east through Tuesday. With mostly sunny skies, and high pressure building into West Central Texas, expect temperatures to warm into the mid and upper 70s on Tuesday. 18 One more warm day is expected on Wednesday with highs in the upper 70s to near 80 degrees, before the next cold front and upper level trough head toward the area.
VFR CONDITIONS WITH DRY WNW FLOW WILL PERSIST AS A REINFORCING COLD FRONT PUSHES THROUGH LATER THIS EVENING THROUGH WEDNESDAY MORNING. /ISSUED 250 PM EST MON JAN 26 2015/ A SERIES OF COLD FRONTS WILL REINFORCE BELOW AVERAGE TEMPERATURES INTO SOUTH FLORIDA UNTIL LATE WEEK. AS HIGH PRESSURE DOMINATES. ASSOCIATED WITH A COLD FRONT. TEMPERATURES HAVE BOOSTED INTO THE LOWER 70S.
HIGH PRESSURE SITUATED ACROSS THE REGION THIS MORNING WILL PUSH OFF TO THE EAST THROUGH THE DAY. AND AS IT DOES SO THE LOW LEVEL FLOW WILL BECOME SOUTHEASTERLY. AND IN RESPONSE HIGH TEMPERATURES WILL GENERALLY BE COOLER THAN YESTERDAY. TOPPING OUT IN THE LOWER 40S THROUGH SOUTHWESTERN MINNESOTA INTO THE EASTERN PORTIONS OF OUR IOWA ZONES. TO 50S THROUGH THE JAMES RIVER VALLEY THROUGH THE LOWER MISSOURI RIVER CORRIDOR. WEDNESDAY STILL TO BE THE FINAL VERY MILD DAY AS LOW PRESSURE PASSES AND COOLER AIR BEGINS TO DRAIN SOUTHWARD.
311 AM EST TUE JAN 27 2015 LIGHT SNOW SHOWERS AND FLURRIES WILL REMAIN TODAY BEFORE HIGH PRESSURE DECREASES CLOUDS TONIGHT. AREA OF LIGHT SNOW IN WEAKENING DEFORMATION ZONE CONTINUES ACROSS THE RIDGES. STILL SOME LOWER VSBY IN SNOW IN THE SOUTHERN RIDGES AND A FLUFFY INCH OR TWO STILL POSSIBLE INTO THE LATE MORNING HOURS. FRIGID HIGH PRESSURE TONIGHT WILL BREAK OUT STRATUS AND ALLOW FOR LOWS TO REACH THE SINGLE DIGITS WITH READINGS BELOW ZERO POSSIBLE ACROSS THE FAR NORTH.