Aikyam-Lab/Synoptic-Bench huggingface dataset:
315 AM CDT Fri Apr 24 2015 Breezy southeast winds ahead of an approaching warm front are helping to keep temperatures rather mild this morning, with readings only falling into the low to mid 50s as of 3 AM. While the surface warm front remains well to our southeast, the 925 and 850 fronts are starting to lift northeast over the region this morning, and short term guidance continues to suggest that the associated isentropic ascent will eventually result in showers and thunderstorms developing across the region closer to daybreak.
1136 PM MDT THU APR 23 2015 06Z TAF CYCLE AN UPPER LEVEL PACIFIC TROUGH WILL ENCROACH UPON NEW MEXICO TONIGHT. TEMPERATURES WILL BE COOLER AND MOSTLY BELOW NORMAL EXCEPT IN THE FAR EAST. A SHORT WAVE RIDGE WILL CROSS NM SATURDAY BUT THE SECOND STORM WILL BEGIN TO IMPACT THE AREA BY SATURDAY NIGHT. THIS DISTURBANCE WILL COME FROM THE PACIFIC NW AND INCREASE IN INTENSITY AS IT DIVES SE AND FORMS A CLOSED LOW OVER AZ SATURDAY NIGHT.
HIGH PRESSURE WILL KEEP QUIET WEATHER IN PLACE FOR TODAY BEFORE A LOW PRESSURE SYSTEM SWINGING OUT OF THE PLAINS TONIGHT BRINGS RAIN AND CHANCES FOR THUNDERSTORMS TO THE AREA TONIGHT THROUGH SATURDAY NIGHT.
HIGH PRESSURE CONTINUES TO BUILD INTO THE REGION THIS AFTERNOON ALLOWING FOR A CLEAR AND WINDY DAY. AS THE HIGH MOVES OVERHEAD TONIGHT. THINKING THAT TEMPS WILL DROP TO NEAR FREEZING ON THE RIDGES AND BELOW FREEZING IN THE VALLEYS. AS THE HIGH MOVES TO OUR EAST TOMORROW. PRECIP LOOKS TO HOLD OFF UNTIL LATE FRIDAY NIGHT/EARLY SATURDAY MORNING WHEN A WARM FRONT IS PROGGED TO PUSH INTO THE AREA.
APPEARS THAT A WEAK SHORT WAVE STRETCHES TOWARD NW COLORADO HAS BEEN PIVOTING AROUND THE THE CLOSED LOW CIRCULATION (OVER THE SRN NEVADA TIP). AS QPF AMOUNTS WILL BE LIGHT (WITH TRACE AMOUNTS FOR THE LOWER VALLEYS). HOWEVER THE APPROACHING SHEAR AXIS AND CLOSED LOW CIRCULATION TOWARD THE FOUR CORNERS REGION COULD RE-ENERGIZE A FEW NOCTURNAL SHOWERS AFTER MIDNIGHT. BUT BANDS OF SHOWERS AND TSTORMS WILL DEVELOP IN EASTERN UTAH AND TREK EAST AS THE DAY GOES ON FRIDAY AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT AFOREMENTIONED ABOVE WILL DIVE DOWN FROM THE PACIFIC NW ON SATURDAY AND THE ASSOCIATED TROUGH WILL BECOME QUITE ELONGATED AS IT ENTERS UTAH SATURDAY NIGHT.
110 AM EDT FRI APR 24 2015 DRY AND COOL WEATHER CAN BE EXPECTED TODAY AS HIGH PRESSURE SLIDES ACROSS THE REGION. BUT THE REPRIEVE WILL BE BRIEF AS LOW PRESSURE IS FORECAST TO GENERATE RAIN ON SATURDAY. RESIDUAL FLURRIES AND CLOUDS WILL DIMINISH THROUGHTHE PREDAWN HOURS AS SUBSIDENCE INCREASES UNDER BUILDING HIGH PRESSURE. MOIST ADVECTION INCREASES AHEAD OF LOW PRESSURE ADVANCING OUT OF THE MIDWEST. SUCH A TRACK WOULD KEEP THE FORECAST AREA ALONG OR JUST NORTH OF THE ASSOCIATED WARM FRONT.
TOWARD MORNING A WARM FRONT AND SOME UPPER LEVEL ENERGY WILL MOVE INTO AR FROM THE SOUTHWEST.
THESE ARE DUE TO THETA-E ADVECTION AS WELL AS SOME WEAK SPEED CONVERGENCE IN THE LOWER LEVELS.
412 AM CDT FRI APR 24 2015 LATEST SFC ANALYSIS WAS INDICATING ELONGATED NORTH-TO-SOUTH RIDGE AXIS STARTING TO SLIDE EAST OF THE AREA BUT STILL PRODUCING LIGHT TO CALM WINDS ACRS IL. WATER VAPOR LOOP SHOWING A RIDGE-RIDING LEAD VORT LOBE ACRS NORTHEASTERN NEB INTO NW IA WITH SIGNS IT WILL MOVE ACRS IA THROUGH MIDDAY. BUT THICKENING CLOUD COVER AND EVAPO-COOLING PROCESSES MAY MAKE FOR COOLER HIGHS THAN ADVERTISED. MOST OF THE 00Z RUN MODEL GUIDANCE IN GENERAL AGREEMENT OF ROLLING CLOSING OFF UPPER LOW SYSTEM ACRS NORTHWESTERN MO BY 12Z SAT. THE SOUTH WILL TAP INTO HIGHER DEWPOINTS CLOSER TO THE SURFACE CYCLONE. STEEP MID LEVEL LAPSE RATES AND PROXIMITY TO THE 850 MB WARM FRONT MAY LEAD TO AT LEAST ISOLATED THUNDER DURING THE MORNING ACROSS THE SOUTH.
353 AM CDT FRI APR 24 2015 HAND ANALYSIS OF THE 07Z MSL DATA SHOWED LOW PRESSURE CENTERED IN SOUTHEAST MONTANA AND WESTERN SOUTH DAKOTA WITH A QUASI- STATIONARY FRONT ACROSS NORTHERN NEBRASKA INTO CENTRAL MONTANA. RIDGING ALOFT WILL BUILD ACROSS THE CENTRAL PLAINS SATURDAY AHEAD OF AN APPROACHING LONG WAVE TROUGH MOVING ONTO THE WEST COAST.
119 AM EDT FRI APR 24 2015 AN APPROACHING PRESSURE RIDGE WILL EXTEND THROUGH THE FORECAST AREA FRIDAY. THE RIDGE WILL SHIFT OFF THE EAST COAST FRIDAY NIGHT AND MOISTURE WILL INCREASE AHEAD OF A WARM FRONT. USED THE GUIDANCE CONSENSUS FOR THE LOW TEMPERATURE FORECAST. EXPECT LOWS IN THE LOWER 40S NORTH TO NEAR 50 SOUTH. NO RAIN CHANCES FRIDAY AND HIGH TEMPERATURES WILL BE BELOW NORMAL IN THE LOWER 70S. TEMPERATURES SATURDAY LIKELY TO BE COOLER THAN NORMAL WITH PLENTY OF CLOUDS AND PRECIPITATION.
HIGHEST AMOUNTS SHOULD BE CONCENTRATED WITHIN THE SOUTHERN ONE OR TWO TIERS OF COUNTIES IN SOUTHERN WI AND THEN SOUTH OF THE WI/IL BORDER CLOSEST TO THE LOW. THE GFS IS FARTHEST NORTH WITH THE HIGHER QPF THAN THE CANADIAN. THE THERMAL TROUGH WILL MOVE ACROSS WI DURING THE DAY SATURDAY.
KBRO DOPPLER RADAR NOTES STRATIFORM RAINFALL WITH A FEW EMBEDDED THUNDERSTORMS MAINLY ALONG AND EAST OF THE HIGHWAY 281/INTERSTATE 69C CORRIDOR RIGHT NOW.
COOL HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTHWEST TODAY. A WARM FRONT WILL MOVE IN FROM THE SOUTHWEST LATE TONIGHT. BRINGING UNSETTLED WEATHER AS WAVES OF LOW PRESSURE TRACKING EAST ALONG THE FRONT. A SECONDARY PUSH OF COLD AIR WILL MOVE INTO THE REGION AS HIGH PRESSURE BUILDS IN FROM THE NW. DEWPOINTS ARE ALREADY IN THE LOW 20S ACROSS THE NORTH AND WEST WHILE ACROSS THE SOUTHEAST THEY REMAIN IN THE MID 40S. THIS IS SUPPORTIVE OF HIGH TEMPS CLOSER TO THE WARMER MAV TEMP GUIDANCE.
BY THE TIME A WEAK 500 MB TROUGH TRAVELS OVERHEAD AND COMBINES WITH SURFACE CONVERGENCE ASSOCIATED WITH AN INVERTED TROUGH. GIVEN THE LOW FREEZING LEVELS. WEAK UPPER LEVEL RIDGING THEN SETS UP OVER THE REGION. WITH A HIGH AMPLITUDE LONG WAVE TROUGH JUST TO THE WEST.
319 AM EDT FRI APR 24 2015 DRY AND COOL WEATHER CAN BE EXPECTED TODAY AS HIGH PRESSURE SLIDES ACROSS THE REGION. BUT THE REPRIEVE WILL BE BRIEF AS LOW PRESSURE IS FORECAST TO GENERATE RAIN ON SATURDAY. RESIDUAL FLURRIES AND CLOUDS WILL DIMINISH THROUGH THE PREDAWN HOURS AS SUBSIDENCE INCREASES UNDER BUILDING HIGH PRESSURE. MOIST ADVECTION INCREASES AHEAD OF LOW PRESSURE ADVANCING OUT OF THE MIDWEST. SUCH A TRACK WOULD KEEP THE FORECAST AREA ALONG OR JUST NORTH OF THE ASSOCIATED WARM FRONT.
IFR/MVFR CIGS FOR MANY ATTM WITH WIDE SPREAD LOW STRATUS AND SPOTTY SHWRS BY DAYBREAK AS A WARM FRONT RETURNS NORTHWARD. EXPECT INTENSE CONVECTION DEVELOPING DURING THE AFTERNOON IN OUR CWA AS A COLD FRONT SHIFTS EWRD ACROSS TX/OK AT PEAK HEATING.
636 AM EDT FRI APR 24 2015 HIGH PRESSURE IN CONTROL INTO TONIGHT. LOW PRESSURE RIDES EAST ALONG FRONTAL BOUNDARY AND PASSES SOUTHERN WV LATE SATURDAY NIGHT.
500 MBAR RIDGE INITIALLY ALONG THE MISSISSIPPI RIVER VALLEY WILL SHIFT EASTWARD TONIGHT AND WITH AXIS FROM GREAT LAKES DOWN INTO CAROLINAS BY 18Z SATURDAY. SHOWERS AND A FEW THUNDERSTORMS WILL BECOME LIKELY TONIGHT AS WARM FRONT LIFTS NORTHWARD IN THE OVERNIGHT HOURS. CANT RULE OUT A STRONG TO POSSIBLY SEVERE STORM AHEAD OF WARM FRONT TOWARD DAYBREAK SATURDAY BUT SHOULD BE LIMITED IN NUMBER AS MAIN ENERGY REMAINS WELL TO OUR SOUTHWEST. WARM FRONT HANGS UP WEST TO EAST ACROSS KENTUCKY SATURDAY MORNING WITH BULK OF SHOWERS AND STORMS ALONG AND NORTH OF WARM FRONT. MAY ONLY SEE SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS AFTER WARM FRONTAL PASSAGE SATURDAY MORNING UNTIL ABOUT NOON. UPPER TROUGH LIFTS OUT INTO THE CENTRAL AND SOUTHERN PLAINS TONIGHT WITH AN 80 KNOT SPEED MAX NOSING INTO THE MID STATE BY NOON SATURDAY.
623 AM EDT FRI APR 24 2015 DRY AND COOL WEATHER CAN BE EXPECTED TODAY AS HIGH PRESSURE SLIDES ACROSS THE REGION. BUT THE REPRIEVE WILL BE BRIEF AS LOW PRESSURE IS FORECAST TO GENERATE RAIN ON SATURDAY. MOIST ADVECTION INCREASES AHEAD OF LOW PRESSURE ADVANCING OUT OF THE MIDWEST. SUCH A TRACK WOULD KEEP THE FORECAST AREA ALONG OR JUST NORTH OF THE ASSOCIATED WARM FRONT.
324 AM EDT FRI APR 24 2015 HIGH PRESSURE WILL WILL OFF THE SOUTHEAST COAST TODAY AS THE NEXT FRONTAL SYSTEM BEGINS TO APPROACH FROM THE WEST. A STATIONARY BOUNDARY CURRENTLY ACROSS THE FLORIDA/GA LINE WILL BEGIN TO MOVE NORTH AS A WARM FRONT LATER TONIGHT AND EARLY SATURDAY. ANOTHER ROUND OF CONVECTION IS POSSIBLE LATER IN THE AFTERNOON ALONG AND AHEAD OF A COLD FRONT. THERE IS SOME QUESTION ON EXACTLY HOW FAST AND HOW FAR THE WARM FRONT WILL MOVE NORTH. SO CONFIDENCE ON THE NORTHWARD PROGRESSION OF THE WARM FRONT IS LOW AT THIS TIME. THE SECOND ROUND OF CONVECTION IS EXPECTED TO DEVELOP IN THE MID TO LATE AFTERNOON ALONG THE COLD FRONT. THE AFTERNOON EVENT WILL BE ALONG AND AHEAD OF A COLD FRONT.
A WEAK AREA OF LOW PRESSURE WILL MOVE ACROSS THE STATE TODAY.
THE HIGHER RESOLUTION MODELS (HRRR/RAP/WRF) HINT AT A FEW SHOWERS DEVELOPING ACROSS FAR SOUTHERN NORTH DAKOTA THIS AFTERNOON ASSOCIATED WITH AN AREA OF WEEK ISENTROPIC LIFT. DEEP WESTERN CONUS TROUGH ON FRIDAY WILL TRANSITION TO A SPLIT FLOW PATTERN THROUGH THE WEEKEND. A SHORT WAVE IMPULSE EJECTING OUT OF THE WEST COAST TROUGH WILL TRIGGER LARGE SCALE ASCENT ACROSS THE NORTHERN HIGH PLAINS AND EVENTUALLY INTO WESTERN ND.
EARLY MORNING GOES WATER VAPOR IMAGERY SHOWED UPPER LEVEL RIDGING SPREADING INTO THE LOWER MS RIVER VALLEY FROM THE SOUTHERN PLAINS. INTO THE LOWER MS RIVER VALLEY. AS THE UPPER RIDGE AXIS PASSES TO THE EAST THIS AFTERNOON. WITH THE SURFACE WARM FRONT RATHER DIFFUSE UNDER A CONTINUED VEIL OF CIRROSTRATUS. IT WILL COME DOWN TO TIMING AND POSITIONING OF THE LOW LEVEL DRYLINE WITH STORMS BECOMING ROOTED IN THE BOUNDARY LAYER. WITH UPPER LEVEL NORTHERN BRANCH RIDGING OVER THE MID MS RIVER VALLEY UNDERCUT BY AN APPROACHING CLOSED SOUTHERN BRANCH LOW OVER TX.
UPPER AIR ANALYSIS LAST EVENING SHOWED A RIDGE OVER THE MIDDLE OF THE COUNTRY AND A TROUGH EXTENDING FROM UTAH TO THE PACIFIC COAST OF BAJA CALIFORNIA. THE DRYLINE WAS LYING ACROSS EDWARDS AND VAL VERDE COUNTIES AND A COLD FRONT STRETCHED FROM NEAR BEAUMONT TO STEPHENVILLE. MOST OF OUR CWA REMAINS WARM AND MOIST WITH DEW POINT TEMPERATURES IN THE LOWER TO MIDDLE 70S. THE UPPER LEVEL TROUGH OVER THE SOUTHWEST WILL PROGRESS TO THE NORTHEAST DURING THIS PERIOD CAUSING SOME MINOR HEIGHT FALLS OVER TEXAS. A COLD FRONT WILL DEVELOP TONIGHT AND MOVE THROUGH OUR CWA.
TEMPERATURES WILL BE A BIT COOLER. SATURDAY MORNING WILL START OFF DRY ACROSS THE AREA WITH A SHORT WAVE RIDGE AXIS OVER EASTERN COLORADO. THIS RIDGE WILL MOVE OFF TO EAST AND SOUTHWEST FLOW ALOFT WILL PREVAIL BY AFTERNOON. EXPECT SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP OVER THE HIGHER TERRAIN EARLY SATURDAY AFTERNOON AND THEN SPREAD EASTWARD DURING THE LATE AFTERNOON AND EVENING HOURS. A SEVERE STORM OR TWO CAN'T BE RULED OUT EVEN THOUGH INSTABILITY WILL BE ON THE LOW SIDE.
655 AM EDT FRI APR 24 2015 HIGH PRESSURE WILL REMAIN IN CONTROL OF THE WEATHER TODAY. AN AREA OF LOW PRESSURE WILL TRACK ACROSS THE OHIO VALLEY ON SATURDAY.
OF COURSE THE MAIN QUESTION WILL BE PRECIPITATION TYPE OVER THE HIGHER ELEVATION OF SOUTHEAST WYOMING OUTSIDE OF THE MOUNTAINS. WILL HAVE TO KEEP A CLOSE EYE ON MODEL TEMPERATURE TRENDS OVER THE NEXT 24 HOURS AS A FEW DEGREES WARMER OR COOLER WILL MAKE A HUGE DIFFERENCE IN PRECIPITATION TYPE AND THE POTENTIAL FOR SNOW.
617 AM EDT FRI APR 24 2015 HIGH PRESSURE ACROSS THE AREA WILL MOVE EAST TONIGHT AND ALLOW LOW PRESSURE TO MOVE THROUGH THE LOWER OHIO VALLEY ON SATURDAY.
THE SURFACE ANTICYCLONE WILL BEGIN TO PULL AWAY THIS EVENING. EVENTUALLY GETTING PUSHED EASTWARD LATE TONIGHT AS THE PRESSURE GRADIENT INCREASES IN RESPONSE TO APPROACHING LOW PRESSURE. MARKED IMPROVEMENT IS EXPECTED IN THE TEMPERATURE DEPARTMENT WITH A STRONG CONSENSUS IN GUIDANCE FOR HIGHS TODAY REACHING THE LOW TO MIDDLE 50S.
528 AM EDT FRI APR 24 2015 HIGH PRESSURE WILL REMAIN IN CONTROL OF THE WEATHER TODAY. AN AREA OF LOW PRESSURE WILL TRACK ACROSS THE OHIO VALLEY ON SATURDAY.
THERE ALSO LOOKS LIKE THERE IS A WEAK TROUGH AT 850 MB EXTENDING THE LOUISIANA COAST TO AROUND LAREDO. THERE IS ALSO EVIDENCE OF WEAK 850 MB HIGH PRESSURE OVER THE WESTERN GULF. 700 MB LOOKS DRY WITH MORE PRONOUNCED RIDGING ALONG THE TEXAS COAST. WEAK RIDGING WAS AGAIN NOTED OVER THE WESTERN GULF. THE OTHER CONCERN REGARDING CONVECTION IS THE 850-500 RIDGE OVER THE GULF THAT IS IMPINGING ON SE TX.
A WEAK SHORT WAVE EMBEDDED WITHIN THE LONG WAVE TROUGH WILL PASS THROUGH THE REGION TONIGHT. MODELS SUGGEST UPPER LEVEL RIDGING BUILDING INTO THE EASTERN HALF OF THE CWA BY 18Z. THIS RIDGE SHOULD SUPPRESS CONVECTION FOR A LARGE PORTION OF THE CWA.
AIRMASS WILL MOISTEN UP TONIGHT AS HIGH PRESSURE SHIFTS EAST.
THE STRONG WARM AIR ADVECTION WILL BRING IN ABOVE FREEZING TEMPERATURES BEFORE PRECIP BEGINS. UPPER RIDGING BUILDS OVER THE REGION TONIGHT INTO SATURDAY. AND SLIGHTLY WARMER TEMPERATURES.
MEANWHILE TO THE NORTH A POLAR UPPER TROUGH IS CURRENTLY ROTATING OVER THE NEW ENGLAND STATES, AND FURTHER NORTHWEST A CUTOFF LOW IS SPINNING OFF THE PACIFIC NORTHWEST. THE SENSIBLE WEATHER IMPACTS OCCURRING TODAY INCLUDE A COOL CP AIRMASS AND HIGH CLOUD COVER THAT HAS KEPT OUR TEMPERATURES ABOUT 10- 15 DEGREES COOLER THAN NORMAL. A BROAD UPPER TROUGH CONTINUES TO SPIN OVER THE NORTHEAST STATES WITH A DEEP TROUGH OVER SOCAL USHERING IN UPPER LEVEL MOISTURE ACROSS OUR AREA.
HIGH PRESSURE WILL CONTINUE TO SLIDE EAST THROUGH FRIDAY AS AN AREA OF LOW PRESSURE MOVES OUT INTO THE PLAINS. BUT ANY MIXTURE WILL TRANSITION TO RAIN ON FRIDAY AS WARMER AIR MOVES INTO THE REGION.
357 AM EDT FRI APR 24 2015 HIGH PRESSURE OVER INDIANA WILL BUILD ONTO THE EAST COAST TODAY.
COOL HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTHWEST TODAY. A WARM FRONT WILL MOVE IN FROM THE SOUTHWEST LATE TONIGHT. BRINGING UNSETTLED WEATHER AS WAVES OF LOW PRESSURE TRACKING EAST ALONG THE FRONT. HIGH PRESSURE OVER THE OHIO VALLEY. WILL INCH EASTWARD THIS MORNING AND THEN BECOME ELONGATED OVER THE REGION THIS AFTERNOON AS A PIECE OF THE HIGH SETTLES OFF THE SOUTHEAST COAST.
Given the shear from the approaching upper level trough and the instability, some of the storms will likely reach severe levels, especially across the Heartland where the deepest low level moisture will reside.
SHOWERS ARE ALONG A NE-SW COLD FRONT BUT SHOWERS WILL LAST INTO THIS EVENING NEAR THE NEVADA BORDER. ANOTHER RELATIVELY STRONG COLD AND MOIST SHORT WAVE TROUGH WILL COME IN FROM THE NORTH PACIFIC OVERNIGHT IN HARNEY COUNTY AND THE REST OF OUR CWA SATURDAY WITH MORE SHOWERS. AN UPPER LEVEL RIDGE BUILDING OVER THE WESTERN U.
WITH SUBFREEZING TEMPERATURES IN MANY PLACES. AN UPPER LEVEL RIDGE WAS JUST TO OUR WEST. AND HIGH CLOUDS WERE SPILLING OVER THE RIDGE INTO OUR SOUTWEST COUNTIES. AND WILL HEAD EAST TO THE LOWER OHIO VALLEY BY THE END OF THE PERIOD. AND A WARM FRONT WILL MOVE NORTH INTO KY.
AN UPPER LEVEL LOW WILL KEEP THE WEATHER COOL AND SHOWERY AS IT MOVES SLOWLY ACROSS THE REGION THROUGH SATURDAY.
TEMPERATURES SHOULD BE A FEW DEGREES COOLER OVER THE REGION ON FRIDAY BECAUSE OF CLOUD COVER/PRECIP. OTHERWISE, A DISTURBANCE EJECTING FROM THE MAIN UPPER TROUGH OVER VANCOUVER ISLAND WILL BRING INCREASING CLOUDINESS AND A CHANCE FOR SHOWERS/THUNDERSTORMS TO MOST OF THE AREA, ESPECIALLY AFTER 18Z AS A WEAK COLD FRONT MOVES ACROSS THE AREA. A BROAD UPPER LEVEL TROUGH WILL REMAIN IN PLACE OVER MUCH OF THE WESTERN U. SEVERAL CIRCULATION CENTERS ARE EMBEDDED WITHIN THE BROAD TROUGH WITH THE MAIN CENTER LOCATED OFF VANCOUVER ISLAND WHILE THE SOUTHERN EXTENSION OF THE TROUGH AXIS MOVES EAST ACROSS THE DESERT SW. MOISTURE STREAMING NE FROM THE SW TROUGH IS JUST CLIPPING FAR SW MT.
PROJECTED LOW TEMPS STILL LOOK REASONABLE WITH A LEAN TOWARD THE WARMER NUMBERS WARRANTED.
1044 PM PDT Thu Apr 23 2015 Showers and thunderstorms possible overnight in the higher terrain. Trough dropping south and outflow boundaries from earlier convection have been enough to initiate shower and thunderstorm development farther south including the northern Sac metro area.
659 AM EDT FRI APR 24 2015 DEEP COLUMN RIDGING WILL SUPPORT VFR CONDITIONS ACROSS SOUTHEASTERN MICHIGAN TODAY AND TONIGHT. LIGHT WESTERLY WINDS WILL EVENTUALLY TRANSITION TO EASTERLY IN RESPONSE TO APPROACHING LOW PRESSURE. THE SURFACE ANTICYCLONE WILL BEGIN TO PULL AWAY THIS EVENING. EVENTUALLY GETTING PUSHED EASTWARD LATE TONIGHT AS THE PRESSURE GRADIENT INCREASES IN RESPONSE TO APPROACHING LOW PRESSURE. MARKED IMPROVEMENT IS EXPECTED IN THE TEMPERATURE DEPARTMENT WITH A STRONG CONSENSUS IN GUIDANCE FOR HIGHS TODAY REACHING THE LOW TO MIDDLE 50S.
BY TONIGHT A WARM FRONT WILL DEVELOP TO OUR SOUTH.
455 AM EDT FRI APR 24 2015 UPPER LEVEL LOW PRESSURE WILL KEEP UNSETTLED CONDITIONS ACROSS THE REGION TODAY THROUGH THE WEEKEND. UPPER LEVEL LOW PRESSURE WILL REMAIN ACROSS THE REGION TODAY THROUGH TONIGHT KEEPING UNSETTLED CONDITIONS ACROSS THE FORECAST AREA. THE COLD POOL ALOFT WITH THE UPPER LOW WILL ALLOW A LIGHT RAIN/SNOW MIX EARLY TONIGHT TO TRANSITION TO LIGHT SNOW ACROSS NORTHERN PORTIONS OF THE FORECAST AREA OVERNIGHT WITH SNOW ACCUMULATIONS OF UP TO AROUND AN INCH AGAIN POSSIBLE. HIGH TEMPERATURES TODAY WILL RANGE FROM THE LOWER 40S NORTH. LOW TEMPERATURES TONIGHT WILL RANGE FROM AROUND 30 TO THE LOWER 30S NORTH. TO THE LOWER TO MID 30S DOWNEAST.
1002 PM PDT Thu Apr 23 2015 Showers and thunderstorms possible overnight in the higher terrain.
THE UPPER TROUGH WILL CONTINUE LIFTING FROM OVER THE BAJA PENINSULA TO THE NORTHEAST. HIGHS WILL ONCE AGAIN REACH INTO THE LOWER 90S OUT WEST TODAY. SATURDAY WILL BE A FEW DEGREES WARMER.
652 AM EDT FRI APR 24 2015 HIGH PRESSURE WILL BUILD OVER THE AREA THROUGH TONIGHT. THE HIGH WILL MOVE OFFSHORE SATURDAY AS DEVELOPING LOW PRESSURE APPROACHES FROM THE WEST.
HIGH PRESSURE WILL CONTINUE TO RESIDE OVER THE REGION.
A WEAK COLD FRONT WILL MOVE THROUGH THE REGION TODAY RESULTING IN A GRADUAL WIND SHIFT FROM WESTERLY. A LARGE AREA OF HIGH PRESSURE WILL BUILD NORTH OF THE AREA RESULTING IN INCREASING WINDS AND SEAS BEGINNING THURSDAY NIGHT AND CONTINUING THROUGH THE WEEKEND.
1133 AM EDT WED OCT 14 2015 LATEST SURFACE ANALYSIS DEPICTS A COLD FRONT MOVING SOUTHEASTWARD ACROSS NORTHEAST FLORIDA. WE EXPECT LOWS TONIGHT TO FALL TO THE LOW/MID 50S INLAND. RANGING TO THE LOWER 60S AT THE BEACHES. A DRY COLD FRONT WILL PUSH THROUGH THE NORTHEAST FLORIDA COASTAL WATERS BY EARLY AFTERNOON. HIGH PRESSURE WILL BUILD INTO THE SOUTHEASTERN STATES TONIGHT. WINDS WILL BECOME ONSHORE ON THURSDAY AS HIGH PRESSURE CONTINUES TO SINK SOUTHWARD TOWARDS OUR REGION.
WITH A THURSDAY NIGHT COLD FRONT BRINGING THE BEST SHOWER CHANCES. LOWS NEAR FREEZING ARE FORECAST THIS WEEKEND. A BROAD UPPER TROUGH WILL PERSIST ACROSS THE REGION TODAY. A CLEARING TREND IS EXPECTED LATE TONIGHT INTO THURSDAY AS WEAK SURFACE RIDGING BRIEFLY BUILDS IN.
NET RESULT WILL BE A MILDER START TO THE DAY TODAY AND A TAD WARMER TEMPERATURES THIS AFTN THAN WHAT OCCURRED ON WEDNESDAY. ACCOMPANIED COLD FRONT WILL PASS SOUTH THRU THE AREA AS WELL AND USHER IN THE COLDEST AIRMASS THIS FALL. SOME LIKELY FOR A BRIEF TIME BEHIND COLD FRONT. HIGH PRESSURE WILL DROP SOUTHEAST AND BE IN EASTERN ND 12Z FRI. FRESH SUPPLY OF COOLING SHOULD ALLOW TEMPS IN MANY AREAS TO DROP BELOW FREEZING.
758 AM EDT WED OCT 14 2015 AN AMPLIFIED UPPER LEVEL TROUGH OVER EASTERN CANADA WILL DOMINATE THE REGIONAL WEATHER PATTERN THROUGH THE WEEKEND WITH TEMPERATURES AVERAGING BELOW NORMAL. MID TO HIGH CLOUD SHIELD ASSOCIATED WITH WEAK UPPER TROF IS MOVING ACROSS CENTRAL PA THIS MORNING.
958 AM EDT WED OCT 14 2015 A COLD FRONT MOVED OFFSHORE OVERNIGHT. A SECOND COLD FRONT MOVES THROUGH TODAY WITH ANOTHER ROUND OF SHOWERS POSSIBLE. HIGH PRESSURE PASSES SOUTH OF THE AREA ON THURSDAY.
/ISSUED 335 AM CDT WED OCT 14 2015/ NORTH AND CENTRAL TEXAS WILL CONTINUE TO REMAIN UNDER NORTHWEST FLOW ALOFT FOR THE NEXT FEW DAYS WITH AN UPPER LEVEL RIDGE CENTERED TO OUR WEST AND A DEEP TROUGH OVER THE EASTERN CONUS. THE INFLUENCE OF THE UPPER LEVEL RIDGE WILL RESULT IN RECORD TEMPERATURES IN THE 90S ACROSS THE REGION TODAY AND THURSDAY. THE UPPER LEVEL RIDGE WEAKENS SOME AND ANTICIPATE TEMPERATURES WILL BE JUST SLIGHTLY BELOW TODAY/S VALUES BUT BOTH WACO AND DFW AGAIN HAVE A CHANCE TO BREAK THEIR DAILY RECORD MAX TEMPERATURES FOR THE 15TH.
After a brief return to southwesterly winds overnight, a dry cold front will move through the Ozarks this morning. If anything, temperatures may be a few degrees warmer in spots with highs ranging from the middle 70s across central Missouri to the lower 80s across far southern Missouri. Lows tonight will range from the middle 40s around Rolla (closer to that high pressure) to the lower 50s across southwestern Missouri. Thursday then looks like another warm day ahead of an approaching Canadian cold front. While moisture will be somewhat scarce, lift in the low and mid levels of the atmosphere may be able to compensate. Behind that front, a cool air mass will filter into the Ozarks to end the week as high pressure builds southeast across the Great Lakes and Corn Belt.
CHATTANOOGA AIRPORT, TN 76 48 75 51 / 0 0 0 0 KNOXVILLE MCGHEE TYSON AIRPORT, TN 73 46 72 48 / 0 0 0 0 OAK RIDGE, TN 73 45 72 48 / 0 0 0 0 TRI CITIES AIRPORT, TN 71 40 68 42 / 0 0 0 10.
1207 PM EDT WED OCT 14 2015 AN AMPLIFIED UPPER LEVEL TROUGH OVER EASTERN CANADA WILL DOMINATE THE REGIONAL WEATHER PATTERN THROUGH THE WEEKEND WITH TEMPERATURES AVERAGING BELOW NORMAL. A WEAK UPPER TROF DENOTED BY BKN MID-HIGH CLOUDS IS EXITING THE REGION TO THE EAST AT MIDDAY. WHILE A MID TO HIGH CLOUD SHIELD ASSOCIATED WITH A SECOND UPPER TROF IS SPREADING INTO CENTRAL PA LATE THIS MORNING.
A PRESSURE RIDGE MOVING INTO THE FORECAST AREA FROM THE WEST WILL EXTEND THROUGH THE AREA THURSDAY AND THURSDAY NIGHT.
DENSE FOG IS IN A NARROW TRANSITION ZONE BETWEEN THE COOLER AIR OVER VICTORIA CROSSROADS AND THE WARMER AND MORE MOIST AIR OVER THE GULF WATERS INTO THE COASTAL BEND. A WIDE RANGE OF DPT TEMPERATURES ACROSS THE REGION THIS MORNING AS COLD FRONT YESTERDAY STALLED OVER SOUTH TEXAS. WILL HAVE A PRETTY QUIET FORECAST WITH HIGH PRESSURE BUILDING IN. THE HIGH PRESSURE RIDGE WILL SHIFT WINDS BACK AROUND TO THE SOUTHEAST LATER TODAY AS THE STALLED FRONT DISSIPATES. WARMER WEDNESDAY THAN THURSDAY.
BROAD HIGH PRESSURE AT THE SURFACE WILL REMAIN IN PLACE TODAY AND CONTINUE TO BRING TRANQUIL CONDITIONS WITH MOSTLY SUNNY SKIES. WILL BE WATCHING A COLD FRONT TRACK SOUTHEAST ACROSS THE CWA ON THURSDAY WITH COLDER AIR TO FOLLOW. THURSDAY WILL BE BREEZY AND RATHER COOL WITH CANADIAN HIGH PRESSURE BEGINNING TO BUILD SOUTHEAST INTO THE NORTHERN PLAINS.
1109 AM EDT WED OCT 14 2015 A SECONDARY COLD FRONT WILL MOVE THROUGH THE AREA TODAY PRODUCING MOSTLY CLOUDY SKIES AND SCATTERED SHOWERS.
AND HIGH PRESSURE PASSING TO THE SOUTH OF THE STATE WILL MAKE FOR A SUNNY FALL DAY. WINDS WILL BACK TO THE WSW THIS PM USHERING IN WARMER TEMPS. WAA WILL CONTINUE THROUGH THE NIGHT IN THE LOWER LEVELS OF THE ATMOSPHERE KEEPING TEMPS ON THE WARMER SIDE OVERNIGHT BEFORE A COLD FRONT PUSHES THROUGH THE AREA ON THURSDAY. A COLD FRONT WILL MOVE THROUGH THE AREA. A BROAD AREA OF LOW PRESSURE WILL BECOME ESTABLISHED OVER ONTARIO CANADA THROUGH THE PERIOD WHILE HIGH PRESSURE WILL MOVE FROM THE MO RVR VALLEY TO THE OHIO RVR VALLEY. THUS EXPECTING HIGHS IN THE LOWER TO MID 60S. THE WLY SFC FLOW AND WARM ADVECTION WILL CONTINUE TNT WITH THE SFC-850 MB THERMAL RIDGE TO SHIFT SWD INTO THE AREA. TEMPS ALOFT ARE WARM ENOUGH FOR HIGHS INTO AT LEAST THE LOW 60S.
UPPER LEVEL RIDGE WILL REMAIN ALONG THE WEST COAST WITH NORTHWEST FLOW ALOFT PREVAILING OVER MONTANA THROUGH THURSDAY MORNING. SURFACE COLD FRONT WILL MOVE SOUTH FROM CANADA OVERNIGHT WITH WINDS SHIFTING TO THE NORTH AND NORTHEAST.
635 AM CDT WED OCT 14 2015 MAIN CONCERNS IN THE SHORT TERM ARE FOCUSED AROUND WARMER TEMPERATURES TODAY AND THE NEXT CHANCE FOR RAIN EXPECTED DURING THE DAY THURSDAY. ALONG WITH COOLER TEMPERATURES. WEAK HIGH PRESSURE WILL REMAIN IN PLACE OVER SOUTHWEST MINNESOTA TODAY WITH A DRY AIR MASS ACROSS THE ENTIRE UPPER MIDWEST. TEMPERATURES WILL CLIMB INTO THE UPPER 50S OVER THE ARROWHEAD AND INTO THE LOWER TO MID 60S FURTHER SOUTH. MAY SEE AN AREA OF MID LEVEL CUMULUS DEVELOP LATE THIS AFTERNOON AND EARLY EVENING OVER THE NORTHLAND AS A WEAK PRE- FRONTAL TROUGH DROPS IN FROM THE NORTH. THE MAIN PUSH OF COLDER AIR WILL BEGIN TO ARRIVE FROM CANADA DURING THE DAY THURSDAY AS A COLD FRONT SWEEPS SOUTHWARD ACROSS THE AREA. IN THE LOWER 50S.
AS TEMPERATURES STARTED IN THE LOW TO MID 40S ACROSS MUCH OF THE AREA.