Aikyam-Lab/Synoptic-Bench huggingface dataset:
NEAR THE SURFACE, ARCTIC HIGH PRESSURE CONTINUES TO DRIFT SLOWLY EAST ACROSS THE NORTHERN PLAINS. UPPER LEVEL RIDGE AXIS WILL WEAKEN AS IT MOVES EAST TOWARDS THE NORTHERN AND CENTRAL ROCKIES TODAY, AS AN UPPER LEVEL DISTURBANCE EXITS THE EASTERN PACIFIC AND BEGINS TO ROTATE AROUND THE UPPER LEVEL RIDGE AXIS. AS THIS WEAKENING UPPER LEVEL RIDGE MOVES EAST A NORTHWESTERLY DOWNSLOPE FLOW WILL IMPROVE ACROSS THE CENTRAL HIGH PLAINS. WITH WIND SPEEDS SLIGHTLY STRONGER THAN WHAT THEY WERE EARLIER THIS MORNING AND FROM THE SOUTH/SOUTHWEST WILL FAVOR KEEPING OVERNIGHT LOWS A FEW DEGREES WARMER THAN WHAT THE LATEST GUIDANCE SUGGESTED.
A RE-ENFORCING DRY COLD FRONT WILL ADVANCE ACROSS THE REGION OVERNIGHT. VFR EXPECTED THROUGH THE FORECAST PERIOD AS HIGH PRESSURE SETTLES OVER THE AREA TODAY AND THURSDAY. TO NEAR THE FREEZING MARK ALONG THE I-10 CORRIDOR. AS HIGH PRESSURE SITS OVER OUR REGION FOR THE NEXT 24-36 HOURS.
THIS EVENING THROUGH THURSDAY NIGHT LARGE-SCALE TROUGH IS SHIFTING OVER THE EAST COAST. WITH UPPER RIDGE PERSISTING OVER THE WESTERN CONUS. COLD HIGH PRESSURE OVER THE NORTHERN PLAINS IS SLOWLY RETREATING AS A TROUGH PUSHES THE ARCTIC BOUNDARY EASTWARD. ALLOWING WARMER AIR INTO THE REGION. AS THE TROUGH MOVES INTO THE NORTHERN PLAINS AND WARM AIR CONTINUES TO ADVECT INTO THE REGION. LOWS WILL RANGE FROM THE SINGLE DIGITS ACROSS CENTRAL SD TO THE LOWER 20S IN NORTHEASTERN WY. WINDS WILL BECOME WESTERLY BEHIND THE TROUGH.
1006 AM CST WED FEB 18 2015 MORNING SURFACE ANALYSIS SHOWED THE REGION UNDER THE INFLUENCE OF WEAK SURFACE RIDGING. AT 250 MB THIS MORNING A LONGWAVE TROUGH WAS ANALYZED ACROSS THE CENTRAL UNITED STATES WITH SOUTHEAST TEXAS AT THE BASE OF THE TROUGH AXIS. THE TROUGH AXIS WILL CONTINUE TO SWING TO THE EAST TODAY ALLOWING FOR BEAUTIFUL WEATHER THIS AFTERNOON. 850 TEMPS ARE CURRENTLY RIGHT AROUND FREEZING AND WITH FULL SUN THIS WILL TRANSLATE TO HIGH TEMPERATURES IN THE LOWER 60S. ON THURSDAY ANOTHER COLD FRONT WILL DIVE SOUTHWARDS AND WILL LIKELY PUSH TO THE EAST AND ONLY AFFECT OUR FAR NORTHEASTERN COUNTIES. CLOUDS WILL START TO MAKE A RETURN TO THE AREA THURSDAY AFTERNOON IN THE FORM OF SOME CU WITH SLIGHTLY WARMER TEMPERATURES.
WINDS WILL QUICKLY VEER E AROUND 5KTS BY 12Z AS CANADIAN SFC RIDGING BUILDS SE ACROSS THE MS VALLEY. /ISSUED 1058 AM CST WED FEB 18 2015/ LARGE-SCALE UPPER TROF CONTINUES TO MAKE ITS WAY EWD TODAY.
High pressure will remain in place for one more night. But steadily increasing high clouds should keep low temperatures a touch warmer than the past few mornings.
122 PM PST WED FEB 18 2015 HIGH PRESSURE ALOFT WILL CONTINUE SLIGHTLY WARMER WEATHER THROUGH THURSDAY.
1122 AM CST WED FEB 18 2015 FOR 18Z TAFS /ISSUED 1014 AM CST WED FEB 18 2015/ AN ARCTIC COLD FRONT CURRENTLY EXTENDS FROM THE EASTERN GREAT LAKES REGION SOUTHWESTWARD THROUGH ARKANSAS AND WILL MOVE THROUGH THE FORECAST AREA OVER THE NEXT FEW HOURS. MOISTURE WILL BEGIN TO PULL TO THE EAST OF THE AREA THIS AFTERNOON AS THE COLD FRONT MOVES THROUGH. ALSO TWEAKED THE HIGH TEMPS AND HOURLIES TO ACCOUNT FOR CURRENT TRENDS. AS A COLD FRONT PASSES EAST OF THE TERMINAL.
WATER VAPOR SATELLITE IMAGERY SHOWING A DEEP MID-LEVEL TROUGH CARVED OUT ACROSS THE EASTERN CONUS. EMBEDDED SHORT WAVE TROUGH WITHIN NORTHWEST FLOW ALOFT HAS PUSHED AN ARCTIC FRONT SOUTHWARD ACROSS THE AREA. RADAR STILL SHOWING SCATTERED SNOW SHOWERS MAINLY ALONG/EAST OF THE MISSISSIPPI RIVER UNDER THE PASSING MID-LEVEL TROUGH. WILL SEE A CHANCE OF SNOW WEST OF THE MISSISSIPPI RIVER LATE THURSDAY NIGHT AS A WARM FRONT APPROACHES FROM THE NORTHERN/CENTRAL PLAINS.
TONIGHT AND THURSDAY DEEP UPPER TROUGH WAS CENTERED OVER ONTARIO TODAY AND IS RESPONSIBLE FOR THE BITTER COLD TEMPERATURES THAT HAS PLAGUED THE MIDWEST AND NORTHEAST U. HIGH AMPLITUDE UPPER RIDGE OVER THE WESTERN CONUS IS MAINTAINING DRY NORTHWEST UPPER FLOW OVER THE SOUTHERN PLAINS. SURFACE LEE SIDE TROUGHING WILL SET UP OVER THE WESTERN HIGH PLAINS THURSDAY.
WHICH IS SITTING JUST WEST OF AN UPPER TROUGH DOMINATING THE EASTERN HALF OF THE COUNTRY. WITH A WEAK COLD FRONT DRAPED FROM THE TEXAS PANHANDLE ALONG THE RED RIVER AND EAST TOWARDS GEORGIA. THIS COLD FRONT WILL CONTINUE TO SAG SOUTH TOWARDS THE REGION OVERNIGHT. SOUTHERLY RETURN FLOW WILL RESUME TONIGHT INTO THURSDAY AS SURFACE RIDGING SLIDES EAST OF THE REGION AND INCREASE AS A LEE TROUGH DEVELOPS OVER THE HIGH PLAINS.
FORECAST SOUNDING INDICATES WARMING OF 5F IN THE LOWER LAYERS WITH A BOISE HIGH OF 59. LOW LAYER WINDS ARE A LITTLE STRONGER AND FROM THE NW WHICH SHOULD ALLOW US TO MIX AROUND 3000 FT AGL AGAIN FOR 57-58 WHICH IS A LITTLE WARMER THAN FORECAST AND WITH FULL LATE WINTER SUN IT/S REASONABLE.
237 PM EST WED FEB 18 2015 IT WILL BE VERY COLD BEHIND A STRONG COLD FRONT TONIGHT.
ARCTIC HIGH PRESSURE WILL MOVE ACROSS THE FORECAST AREA WHICH WILL GREATLY DECREASE THE WINDS. THE WELL ADVERTISED WARM FRONT BEGINS TO NUDGE SLOWLY EASTWARD ALONG WITH AN INCREASE IN MOISTURE. THE LOW LEVELS ARE MOISTURE STARVED TO BEGIN WITH. BUT MEASURABLE POPS WILL BE AT LIKELY IN THIS HIGH POP LOW QPF EVENT.
1111 AM CST WED FEB 18 2015 A COLD FRONT CONTINUES TO SURGE SOUTH THROUGH THE FORECAST AREA THIS MORNING BRINGING GUSTY NORTHWEST WINDS.
ISSUED BY NATIONAL WEATHER SERVICE LA CROSSE WI 222 PM CST WED FEB 18 2015 HIGH PRESSURE OVER THE CENTRAL PLAINS WILL BUILD INTO THE AREA OVERNIGHT AND THURSDAY.
HIGH PRESSURE OVERHEAD WILL SLIDE EAST ALLOWING FOR EAST-SOUTHEAST FLOW TO DEVELOP IN THE AFTN/EVNG UNDER CLEAR SKIES.
A WARM FRONT WILL TRACK EASTWARD ACROSS THE REGION ON THURSDAY/THURSDAY NIGHT. MODEL SOUNDINGS ARE SHOWING SIGNIFICANT DRY IN THE LOWER LEVELS WHICH SHOULD LIMIT SNOWFALL AMOUNTS. MUCH WARMER TEMPERATURES WILL PUSH INTO THE REGION BEHIND THIS FRONTAL PASSAGE WITH 925 MB TEMPS WARMING TO THE SINGLE DIGITS ON EITHER SIDE OF ZERO.
WITH AN UPPER LEVEL RIDGE OVER THE WEST COAST. AN UPPER LEVEL TROUGH OVER EASTERN CANADA AND NORTHWEST IN BETWEEN FLOW OVER THE PLAINS. SATELLITE IMAGERY HAS CONTINUED TO SHOW A BAND OF CLOUDS OVER THE HIGH PLAINS COINCIDING WITH A BAND OF MID LEVEL MOISTURE. WITH THE COOLEST READINGS EAST OF HIGHWAY 83 NEAR THE COLD FRONT.
942 AM MST WED FEB 18 2015 WAA CONTINUE ALOFT AIDING IN SUSTAINED WIND GUSTS FOR THE HIGHER MOUNTAINS AND FOOTHILLS OF BOULDER AND LARIMER COUNTIES. COOLER AIR OUT EAST DUE TO INCREASED CLOUDINESS WILL AID IN PREVENTING WINDS MAKING IT TO LOWER ELEVATIONS. HOWEVER WITH THE STRONG NW TO N FLOW TEMPERATURES WILL BE WARMER THAN THE EASTERN PLAINS. AS FOR HIGHS WILL KEEP READINGS MAINLY IN THE 40S OVER NERN CO EXCEPT CLOSER TO THE WY-CO BORDER WHERE DOWNSLOPE NWLY WINDS COMING OFF THE CHEYENNE RIDGE WILL ALLOW FOR HIGHS IN THE LOWER TO MID 50S. FOR TONIGHT BREEZY CONDITIONS WILL CONTINUE OVER THE HIGHER TERRAIN AND MAY MIX DOWN TO THE LOWER FOOTHILLS AFTER MIDNIGHT.
STILL SEEING SUBSIDENCE OVER MUCH OF THE AREA AHEAD OF THE TROUGH AND FRONT. FIRST WAVE MAKES IT INTO THE RIDGES THIS AFTERNOON. MAINLY OVER THE SOUTHEASTERN CORNER AND PARTICULARLY OVER THE RIDGES. THE HIGHEST SNOWFALL ACCUMULATIONS WILL BE OVER THE RIDGES WHERE ADVISORIES HAVE BEEN ISSUED. MODELS ARE HIGHLIGHTING THE NORTH AND RIDGES WITH THE PASSAGE OF THE LATE AFTERNOON/EVE WAVE.
THEN BECOMING EAST TOMORROW MORNING AND SOUTHEAST TOMORROW AFTERNOON AS HIGH PRESSURE MOVES OFF TO THE EAST.
Wind chills will not be much of a factor in part due to surface winds weakening with arrival of high pressure.
A DEEP UPPER VORTEX IN PLACE OVER NE ONTARIO HAS CREATED DEEP TROUGHING OVER THE EASTERN CONUS. A CLIPPER-TYPE SYSTEM AND A REINFORCING COLD FRONT THAT MOVED ACROSS THE AREA BEFORE DAYBREAK TODAY BROUGHT A BOUT OF SNOW SHOWERS TO THE TENNESSEE VALLEY. AS HIGH PRESSURE BUILDS OVER THE REGION. SOUNDINGS SHOW A WARMER INTRUSION MOVING IN DURING THE DAY FRI/FRI NIGHT. FREEZING RAIN FRI AFTERNOON/ EVENING. THIS WINTRY MIX WILL BECOME MAINLY SLEET/FREEZING RAIN/RAIN BY MIDNIGHT.
THIS WILL RETURN A SOUTH TO SOUTHEASTERLY FLOW TO WESTERN KANSAS DRAWING WARMER AIR NORTHWARD INTO CENTRAL AND SOUTHWEST KANSAS. LOOK FOR LOWS PRIMARILY DOWN INTO THE 20S(F) ACROSS CENTRAL KANSAS TO THE LOWER 30S(F) IN EXTREME SOUTHWEST KANSAS. HIGHS ARE EXPECTED ONLY UP INTO THE 40S(F) IN CENTRAL KANSAS NORTH OF A DEVELOPING WARM FRONT TO THE LOWER AND MID 60S(F) IN FAR SOUTHWEST KANSAS SOUTH OF THE BOUNDARY.
WILL GO WITH THE COOLER NAM GUIDANCE AND LOWER TEMPS IN MY NW. DO NOT FORESEE WARM ADVECTION BRINGING BALMY WARMER TEMPS INTO THE FAR WESTERN COUNTIES IN ND MAKING IT TO MY WESTERN ZONES TODAY. UPPER LEVEL TROUGH OVER THE EASTERN US SHIFTS AND LIFTS EAST/NORTHEAST. UPPER LEVEL RIDGE OVER THE WEST COAST WILL SHIFT EAST AND FLATTEN. WATER VAPOR LOOP INDICATED A TROUGH OVER THE WESTERN PACIFIC OR WEST OF THE UPPER RIDGE. PACIFIC UPPER TROUGH WILL MOVE INTO THE DAKOTAS THU NIGHT AND PRODUCE SOME LIGHT SNOW. UPPER RIDGE BUILDING RESUMES OVER WESTERN NORTH AMERICA THU AND SO WILL ANOTHER TROUGH ROTATE SOUTH OUT OF CANADA.
200 PM PST WED FEB 18 2015 HIGH PRESSURE WILL REMAIN ALONG THE WEST COAST THROUGH THE WEEKEND. THE HIGH PRESSURE SYSTEM WILL UNDERGO A SHARP AMPLIFICATION ALONG 130W THE REST OF THIS WEEK.
236 PM EST WED FEB 18 2015 IT WILL BE VERY COLD BEHIND A STRONG COLD FRONT TONIGHT.
333 PM CST WED FEB 18 2015 LARGE-SCALE UPPER TROF CONTINUES TO DOMINATE THE WEATHER PATTERN FOR OUR REGION AND MUCH OF THE ERN HALF OF THE U.
AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL BE OVER THE REGION TODAY. THIS RIDGE WILL SHIFT EAST TONIGHT AS A PACIFIC SYSTEM BEGINS TO MOVE INTO THE PACIFIC NORTHWEST. PRECIP ASSOCIATED WITH THE PACIFIC SYSTEM'S COLD FRONT WILL REACH OUR WESTERN MOST ZONES LATE IN THE TONIGHT PERIOD. WEAK RIDGING WILL TAKE PLACE WITH A COOL NORTHWEST FLOW OVER THE AREA.
/ISSUED 429 AM EDT MON MAR 30 2015/ CURRENT SURFACE ANALYSIS SHOWS A COLD FRONT STRETCHING FROM THE CENTRAL GREAT LAKES BACK THROUGH THE LOWER MISSISSIPPI RIVER VALLEY. A LOW PRESSURE WAVE HAS DEVELOPED ALONG THE BOUNDARY. THERE IS A SIGNIFICANTLY COOLER AND DRIER AIRMASS ACROSS WESTERN GA. AS THIS AREA WILL RECEIVE THE BEST HEATING AND HAVE THE HIGHEST DEWPOINTS/MOISTURE.
1254 PM EDT MON MAR 30 2015 LOW PRESSURE WILL APPROACH FROM THE WEST TODAY AND TRACK NORTH OF THE AREA TONIGHT. A COLD FRONT WILL CROSS THE REGION EARLY TUESDAY.
1056 AM CDT Mon Mar 30 2015 High pressure centered over AR will continue to drift to the southeast, with light southwest winds over central IL. Highs will therefore reach the low to mid 60s, with the warmer temperatures toward the west side of the state.
TUESDAY THERE WILL BE A DEVELOPING LEE TROUGH IN EASTERN COLORADO WHICH WILL INCREASE SOUTHERLY WINDS. THIS WILL RESTRAIN TEMPERATURES SLIGHTLY BUT IT WILL STILL BE WARMER THAN YESTERDAY. THE RIDGE OF HIGH PRESSURE WILL BE OVER COLORADO WITH A MOSTLY DRY AND CONTINUED WARM AIRMASS IN PLACE.
539 AM MDT MON MAR 30 2015 04Z WATER VAPOR IMAGERY/RAP ANALYSIS INDICATED BROAD RIDGING ACROSS THE WESTERN CONUS WITH TROUGH MOVING ACROSS THE GREAT LAKES AREA. SHORT WAVE TROUGH NOTED ALONG NORTHERN EDGE OF RIDGE NEAR NORTHERN MONTANA BORDER. WITH SECOND TROUGH UNDERCUTTING RIDGE IN SOUTHERN NEVADA. HIGH PRESSURE WAS IN PLACE ACROSS THE AREA WITH RETURN FLOW DEVELOPING ACROSS WESTERN CWA. HUMIDITIES WILL LIKELY FALL TO THE 10 TO 20 PERCENT RANGE THROUGH THE AFTERNOON WITH HIGHER TDS COINCIDING WITH WARMER TEMPS SO LOW HUMIDITIES WILL PREVAIL.
SFC WINDS WILL INCREASE AROUND MID MORNING AS A SFC TROF OF LOW PRESSURE ORGANIZES JUST TO THE WEST OF THE AREA. THE SFC TROF OF LOW PRESSURE WILL GRADUALLY SLIDE EWD ACROSS NRN TAF SITES THIS EVENING AND TONIGHT. /ISSUED 526 AM CDT MON MAR 30 2015/ MINIMUM TEMPERATURES THIS MORNING HAVE REMAINED A BIT WARMER THAN EXPECTED ACROSS PORTIONS OF THE WESTERN TEXAS PANHANDLE.
AN APPROACHING COLD FRONT WILL SPREAD RAIN ACROSS DEL NORTE AND HUMBOLDT COUNTIES TONIGHT AND TUESDAY. HIGH CLOUDS ARE STREAMING OVERHEAD AHEAD OF AN APPROACHING UPPER TROF OVER THE E PACIFIC. IN THE LOWER LEVELS. COOLER SURFACE TEMPERATURES WILL TRAIL THE FRONT. BUT THEN DROP OFF AGAIN BY SUN AS A TROF DIGS OVER THE E PACIFIC. THE LOWER CONDITIONS ARE DUE TO REDUCED CEILINGS AND/OR VISIBILITIES. WINDS AND SEAS WILL DIMINISH TODAY AS AN INLAND THERMAL LOW PRESSURE TROUGH AND AN OFFSHORE HIGH PRESSURE RIDGE WEAKENS. A WEAK COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT THEN A HIGH PRESSURE RIDGE WILL BUILD ACROSS THE REGION IN THE WAKE OF THE FRONT. THE HIGH PRESSURE RIDGE WILL STRENGTHEN THE MIDDLE OF THIS WEEK INCREASING THE PRESSURE GRADIENT AND SUBSEQUENTLY NORTHERLY WINDS AND THE SEAS.
THE WIND SHOULD BE DECREASING ACROSS WESTERN ZONES AS THE TROUGH AXIS MOVES THROUGH AND THUS FAR CONFIDENCE IS NOT HIGH ENOUGH THAT WESTERN COUNTIES WILL MEET THE RED FLAG WIND CRITERIA FOR THE REQUIRED 3HR PERIOD. SURFACE ANALYSIS HAS A HIGH PRESSURE SYSTEM IN EASTERN KANSAS EARLY THIS MORNING AND A LOW PRESSURE SYSTEM ON THE HIGH PLAINS. WINDS AHEAD OF THE TROUGH INCREASE FROM THE SOUTHWEST. THE TROUGH IS THROUGH THE AREA THIS EVENING.
1243 PM EDT MON MAR 30 2015 LOW PRESSURE WILL MOVE EAST ACROSS QUEBEC TODAY WITH HIGH PRESSURE BUILDING OVER THE OHIO VALLEY.
04Z WATER VAPOR IMAGERY/RAP ANALYSIS INDICATED BROAD RIDGING ACROSS THE WESTERN CONUS WITH TROUGH MOVING ACROSS THE GREAT LAKES AREA. SHORT WAVE TROUGH NOTED ALONG NORTHERN EDGE OF RIDGE NEAR NORTHERN MONTANA BORDER. WITH SECOND TROUGH UNDERCUTTING RIDGE IN SOUTHERN NEVADA. HIGH PRESSURE WAS IN PLACE ACROSS THE AREA WITH RETURN FLOW DEVELOPING ACROSS WESTERN CWA. HUMIDITIES WILL LIKELY FALL TO THE 10 TO 20 PERCENT RANGE THROUGH THE AFTERNOON WITH HIGHER TDS COINCIDING WITH WARMER TEMPS SO LOW HUMIDITIES WILL PREVAIL.
WELL AHEAD OF A WEAK COLD FRONT LOCATED FROM THE OH VALLEY SWD INTO THE MID SOUTH/ARKLATEX REGIONS. AS HIGH PRESSURE QUICKLY MOVES EWD ACROSS THE SE REGION.
MOISTURE WILL LIFT NORTH THIS EVENING AND OVERNIGHT AS A WARM FRONT MOVES NORTH OVER THE STATE.
ADDITIONALLY, AIR TEMPERATURES ARE RUNNING A LITTLE WARMER OVER NORTH ALABAMA (ESPECIALLY OVER NW AL).
905 AM EDT MON MAR 30 2015 HIGH PRESSURE RIDGE WILL SLIDE SOUTH AS A COOL FRONT MOVES INTO SOUTHEAST GA THIS AFTERNOON.
A SURFACE COLD FRONT WAS RAPIDLY MOVING ACROSS NORTHERN MISSISSIPPI AT 08Z. AS THE UPPER TROUGH AND SURFACE FRONT APPROACH.
933 AM EDT MON MAR 30 2015 LOW PRESSURE WILL APPROACH FROM THE WEST TODAY AND TRACK NORTH OF THE AREA TONIGHT. A COLD FRONT WILL CROSS THE REGION EARLY TUESDAY.
737 AM EDT MON MAR 30 2015 A COLD FRONT WILL MOVE THROUGH THE FORECAST AREA TODAY. THE PRESSURE RIDGE BEHIND THE FRONT WILL MOVE OVER THE FORECAST AREA TONIGHT. HIGH PRESSURE WILL BE CENTERED SOUTH OF THE REGION TUESDAY. THE HIGH-RESOLUTION MODELS DISPLAY SHOWERS IN THE WEST PART OF THE FORECAST AREA THIS MORNING. LEANED TOWARD THE WARMER TEMPERATURE GUIDANCE BASED ON A RELATIVELY WARM START AND EXPECTED AFTERNOON SUN WITH A WESTERLY AND SOMEWHAT DOWNSLOPE FLOW. HIGH PRESSURE BEHIND THE FRONT WILL BE CENTERED NEAR THE FORECAST AREA TONIGHT. THE TEMPERATURE GUIDANCE WAS CLOSE WITH LOWS MAINLY IN THE LOWER 40S. THE MODELS DISPLAY A PRESSURE RIDGE SOUTH OF THE FORECAST AREA TUESDAY AND TUESDAY NIGHT. THIS FEATURE SHOULD LIMIT MOISTURE AHEAD OF A COLD FRONT FORECAST TO SINK SOUTHWARD AND INTO THE AREA TUESDAY NIGHT.
1008 AM EDT MON MAR 30 2015 HIGH PRESSURE TODAY AND TONIGHT. COLD FRONT TUESDAY/TUESDAY NIGHT. SWIFT MOVING COLD FRONT EXITS THE MOUNTAINS AFTER 12Z THIS MORNING IN A CLEAN SWEEPING FASHION WITHOUT LINGERING LOW LEVEL MOISTURE. BUT THE DRY AIR WILL NOT EXHIBIT THE LOW DEWPOINTS SEEN BEFORE THE CURRENT FRONT ARRIVED. LAST CLIPPER TYPE LOW PRESSURE SYSTEM AND COLD FRONT IN NORTHWEST FLOW ALOFT. THE TRACK OF THE LOW ITSELF BY ALL THE MODELS WILL BE JUST NORTH OF OUR AREA.
933 AM PDT MON MAR 30 2015 A FEW UPPER-LEVEL TROUGHS MOVING BY TO OUR NORTH WILL HELP DEEPEN THE MARINE LAYER. CREATE SLIGHTLY COOLER WEATHER AND DEVELOP BREEZY WESTERLY WINDS IN THE MOUNTAINS AND DESERTS THROUGH MID WEEK.
632 AM CDT Mon Mar 30 2015 Highly anticipated warmup to get underway today as high pressure tracks into the Tenn Rvr Vly and southerly flow returns ahead of next area of low pressure moving into the upper Midwest. dry and moderating conditions expected right through midweek with upper 70s/low 80s possible by Wed ahead of main cold front still forecast to pass late Wed/early Thurs.
A COUPLE OF QUITE MILD/WARM DAYS WILL OCCUR OVER THE CWA TODAY THROUGH TUESDAY AS AN UPPER RIDGE APPROACHES TODAY THEN SHIFTS EAST ACROSS THE REGION ON TUESDAY. SIMILAR PATTERN FOR TUESDAY THOUGH A BIT STRONGER LEE TROUGH SHOULD EXIST OVER THE HIGH PLAINS. MAX TEMPS SHOULD BE ABOUT 4-7 DEGREES WARMER OVER THE PLAINS AS A THERMAL RIDGE MOVES ACROSS WITH 700MB TEMPS WARMING TO ABOUT 5-8C TUESDAY AFTERNOON. MID LEVEL MOISTURE SHOULD BEGIN TO STEP UP A BIT TUESDAY AFTERNOON AS THE UPPER RIDGE AXIS MOVES EAST OF THE CWA AND WSW UPPER FLOW SETS UP.
ALL IS QUIET ACROSS THE KS NEIGHBORHOOD AS LARGE BUT WEAK LOWER- DECK HIGH PRESSURE COVERS THE CENTRAL AND SOUTHERN U. TODAY-TUESDAY NIGHT: A WEAK LOWER-DECK TROF SETTLING S/SE SHOULD REACH CENTRAL KS LATE THIS AFTERNOON. THIS WILL FORCE THE WEAK HIGH PRESSURE SE ACROSS THE LOWER MS VALLEY TO ENABLE SOUTHERLY FLOW TO RETURN TO THE KICT NEIGHBORHOOD.
Light northerly wind this morning will veer around to the SE during the afternoon as leeside trough deepens. /ISSUED 332 AM CDT Mon Mar 30 2015/ Will go into brief ridging aloft but main feature of interest is a A cut off low south of CA this morning will move across Baja overnight. After that a flat ridge builds across the area with mild and warm wx through the end of the work week. By the weekend another upper trough may approach the area from the west with rain chances returning to the forecast.
925 AM EDT MON MAR 30 2015 LOW PRESSURE WILL MOVE EAST ACROSS QUEBEC TODAY WITH HIGH PRESSURE BUILDING OVER THE OHIO VALLEY.
ALONG A WEAK COLD FRONT. /61/ /ISSUED 644 AM CDT MON MAR 30 2015/ A SURFACE COLD FRONT WAS RAPIDLY MOVING ACROSS NORTHERN MISSISSIPPI AT 08Z. AS THE UPPER TROUGH AND SURFACE FRONT APPROACH.
EAST-WEST ORIENTED WESTERN ATLANTIC RIDGE LIES ACROSS THE CENTRAL PORTION OF THE FLORIDA PENINSULA AND INTO THE GULF OF MEXICO. WITH A WESTERN ATLANTIC RIDGE LYING ACROSS THE SUNSHINE STATE AND THE ADJACENT WATERS SETTLING SOUTHWARD.
A WEAK AND RATHER DIFFUSE LOOKING COLD FRONT EXTENDED FROM ABOUT TEXARKANA TO FORT WORTH TO ABOUT DEL RIO. TEMPS ARE ALREADY IN THE LOWER 70S AT 10 AM SO WILL LEAN TOWARD THE WARMER ECMWF GUIDANCE FOR MAX TEMPS THIS AFTN.
ADDITIONALLY, AIR TEMPERATURES ARE RUNNING A LITTLE WARMER OVER NORTH ALABAMA (ESPECIALLY OVER NW AL). VFR CONDITIONS ARE FORECAST THROUGH THIS EVENING AS WEAK HIGH PRESSURE SLIDES SE THROUGH THE REGION.
High pressure will continue over the zones today and the region will remain dry with temps above normals. Building high pressure over the area will provide dry and stable conditions.
526 AM MDT MON MAR 30 2015 12Z TAF CYCLE ISOLD LIGHT SHOWERS WILL DEVELOP AROUND THE HIGH TERRAIN AFT 20Z WITH AREAS OF VIRGA LEADING TO GUSTY AND ERRATIC OUTFLOW WINDS.
922 AM EDT MON MAR 30 2015 AFTER A COLD FRONT CROSSES THE REGION THIS MORNING. LOW PRESSURE TRACKING ACROSS THE REGION TONIGHT INTO TUESDAY WILL BRING ANOTHER ROUND OF PRECIPITATION. FRIES THE BREAK FROM PRECIPITATION WILL BE RELATIVELY SHORT LIVED AS LOW PRESSURE TRACKS RIGHT ACROSS THE FORECAST AREA TONIGHT INTO TUESDAY. RANGING FROM THE LOWER 40S IN THE NORTH WITH EXTENSIVE CLOUD COVER TO THE UPPER 50S IN THE SOUTH WHERE A LITTLE BIT OF SUN IS EXPECTED. BUT PARTIAL CLEARING IS EXPECTED AS HIGH PRESSURE MOVES INTO THE REGION.
A WARMER SOUTHWEST FLOW ALOFT WILL PUSH TEMPERATURES CLOSE TO RECORD LEVELS THIS AFTERNOON. LITTLE CHANGE IN FORECASTS THROUGH TONIGHT WITH TEMPS RISING TO NEAR RECORD HIGHS TODAY WITH ONLY SOME HIGH CLOUDINESS UNDER UPPER RIDGE. UPPER RIDGE WILL PASS EAST OF US TONIGHT AS A MODERATELY STRONG UPPER TROUGH COMES INLAND FROM THE PACIFIC. SURFACE COLD FRONT WILL PASS THROUGH EASTERN OREGON SHORTLY BEFORE SUNRISE. AND WESTERN IDAHO TUESDAY MORNING FOLLOWED BY GUSTY WEST WINDS AND SIGNIFICANTLY COOLER TEMPS.
A QUICK MOVING MCS AHEAD OF A SFC COLD FRONT THAT BROUGHT THE THUNDERSTORMS TO THE REGION TODAY IS NOW LOCATED OVER CENTRAL AL AND CENTRAL GA.
HIGH PRESSURE RIDGE AXIS WILL BE DRAPED ACROSS THE CENTRAL PENINSULA WHICH WILL PROMOTE LIGHT WINDS AND ALLOW THE EAST COAST SEA BREEZE TO PUSH INLAND FROM CANAVERAL SOUTHWARD. A WEAKENING HIGH PRESSURE RIDGE AXIS WILL SETTLE ACROSS CENTRAL FL AND THE ADJACENT ATLANTIC WATERS. THE RIDGE AXIS WILL PRESS SOUTH OF THE WATERS AND A SLIGHTLY STRONGER WESTERLY FLOW 10-15 KNOTS WILL DEVELOP OVER NORTH AND CENTRAL WATERS.
/ISSUED 357 AM CDT Mon Mar 30 2015/ (Today and Tonight) Weak upper level ridging over the forecast area this morning will deamplify through tonight with a northwest flow aloft becoming pseudo-zonal by this afternoon. An upper low west of the Baja Peninsula will move east over northern Mexico by tomorrow morning with low to mid level moisture on the increase over the forecast area. Temperatures will be cooler today, generally in the lower 80s, but still above seasonal norms. Tonight will also be warmer than normal with morning lows on Tuesday in the upper 50s to around 60 degrees.
GOOD DIFFERENTIAL HEATING OVER THE SOUTHERN MOUNTAINS COMBINED WITH WEAK DYNAMIC LIFT SHOULD DRIVE CONVECTIVE CLOUD DEVELOPMENT ACROSS THE HIGHER TERRAIN DURING THE AFTERNOON. THE AXIS OF THE UPPER RIDGE TO THE WEST OF UTAH TODAY WILL SHIFT EAST ACROSS THE STATE TONIGHT THROUGH EARLY TUESDAY. AN INCREASINGLY WARM AND STILL QUITE DRY SOUTHWEST FLOW ALOFT WILL DEVELOP ACROSS THE GREAT BASIN TUESDAY IN ADVANCE OF AT LEAST A COUPLE OF COLD CORE PACIFIC MID-LEVEL TROUGHS FOR THE MIDDLE AND LATTER PORTION OF THE WEEK.
838 AM PDT MON MAR 30 2015 The Inland Northwest will enjoy one last day of well above average temperatures before a vigorous cold front arrives during the early morning hours on Tuesday.
/ISSUED 337 AM CDT MON MAR 30 2015/ ITS BEEN A NOISY NIGHT ACROSS THE EASTERN HALF OF THE MIDSOUTH AS A LINE OF THUNDERSTORMS DEVELOPED AND RACED ACROSS THE REGION ALONG THE LEADING EDGE OF A COLD FRONT. TEMPERATURES REMAIN IN THE LOW TO MIDDLE 60S SOUTH OF TUPELO MISSISSIPPI AHEAD OF THE FRONT. BUT ARE IN THE LOW TO MIDDLE 50S BEHIND THE FRONT ACROSS THE MAJORITY OF THE MIDSOUTH.
WILL LIKELY SEE MUCH COOLER TEMPERATURES THAN ADVERTISED. DECIDED TO GO WITH THE MUCH WARMER GFSMOS TEMPERATURES WHICH HAS BEEN DOING QUITE WELL LATELY COMPARED TO THE COOLER NAMMOS. THE NEXT BEST CHANCE OF RAIN APPEARS TO BE ON WED/WED NIGHT AS AN UPPER LEVEL TROUGH MOVES OUT OF OLD MEXICO AND INTO THE SOUTHERN PLAINS. TRENDS HAVE BEEN FOR A MUCH FLATTER TROUGH EJECTING OUT OF THE TX HILL COUNTRY ON WED BUT THERE SHOULD BE ENOUGH LIFT FOR SCATTERED CONVECTION INCREASING FROM WEST TO EAST FOR THOSE PERIODS.
TEMPERATURES ARE A BIT COOLER THAN WHAT WE EXPERIENCED 24 HOURS AGO BUT WILL WARM UP TO THE MID TO UPPER 70S ACROSS THE REGION TODAY UNDER SUNNY SKIES. THE TRAILING EDGE OF A COLD FRONT WILL MOVE INTO NORTHERN FLORIDA LATER THIS EVENING. BUT HIGH PRESSURE OVER CENTRAL AND SOUTHERN FLORIDA SHOULD KEEP ANY EFFECTS FROM THIS FRONT WELL TO OUR NORTH. HIGH PRESSURE MOVES OVER THE AREA PRODUCING PLEASANT WEATHER CONDITIONS AND LIGHT WINDS AROUND 5 TO 10 KNOTS THROUGH THE WEEK.
555 AM MDT MON MAR 30 2015 A COUPLE OF QUITE MILD/WARM DAYS WILL OCCUR OVER THE CWA TODAY THROUGH TUESDAY AS AN UPPER RIDGE APPROACHES TODAY THEN SHIFTS EAST ACROSS THE REGION ON TUESDAY. SIMILAR PATTERN FOR TUESDAY THOUGH A BIT STRONGER LEE TROUGH SHOULD EXIST OVER THE HIGH PLAINS. MAX TEMPS SHOULD BE ABOUT 4-7 DEGREES WARMER OVER THE PLAINS AS A THERMAL RIDGE MOVES ACROSS WITH 700MB TEMPS WARMING TO ABOUT 5-8C TUESDAY AFTERNOON. MID LEVEL MOISTURE SHOULD BEGIN TO STEP UP A BIT TUESDAY AFTERNOON AS THE UPPER RIDGE AXIS MOVES EAST OF THE CWA AND WSW UPPER FLOW SETS UP.
AND IN THE TEENS OVER THE MOUNTAINS WITH A FEW SINGLE DIGITS IN THE HIGH VALLEYS. AN UPPER RIDGE WILL BUILD OVER THE AREA SATURDAY FOR WARMER AND DRIER CONDITIONS. AS WELL AS SOUTHWESTERLY WINDS OVER THE HIGHER TERRAIN.
345 PM CDT Fri Apr 3 2015 (Tonight and Saturday) The cold front was located south of West Central Texas this afternoon. Temperatures were 20 to 25 degrees cooler than 24 hours ago, thanks to gusty north winds and low level cold air advection. Going with the highest POPS along the I-10 corridor. Highs will be in the lower to mid 60s.