Aikyam-Lab/Synoptic-Bench huggingface dataset:
1224 AM EST Mon Feb 24 2020 High pressure will maintain dry weather through part of Monday. Rain returns later tomorrow with a crossing low pressure system. The approaching low pressure system is expected to weaken early Monday morning over the Mississippi River before advancing into the Great Lakes.
Surface analysis depicts high pressure centered offshore from the North Carolina coast and extending westward across the Southeastern states. Meanwhile, water vapor imagery reveals a progressive pattern across the CONUS, with the closed low that was located in the desert Southwest 24 hours ago now centered over the Oklahoma panhandle. This low is supporting the next surface cold front, which stretches across the central and southern Plains states. Downstream of this low and associated trough, weak mid level ridging is building over the Gulf of Mexico and Florida. For the late evening forecast issuance, will maintain the Small Craft Advisory for the Straits and Hawk Channel west of Seven Mile Bridge, as well as for the offshore Gulf waters including the Dry Tortugas.
Strong cold front moved across eastern Oregon this afternoon and was in southwestern Idaho this evening. The frontal passage has been followed by sharply colder temps after daytime highs that reached 55 to 63 in the lower valleys and basins.
1152 PM CST Sun Feb 23 2020 MVFR/IFR conditions to continue throughout much of the overnight pd as shwrs accompany a cold front. Winds will begin to veer around from the s to the w as a cold front moves across the area Monday, with speeds diminishing after sunset. /Tonight through Monday Night/ An upper-level trough approaching the region from the west will be the main feature driving the forecast in the near term. A trailing cold front will swing across the region on Monday with conditions improving from the west. Temperatures overnight to fall into the 50s ahead of the cold front. All locations forecast to fall into the lower 40s on Monday night as high pressure rebuilds across the region.
Another cold front remains on track to bring gusty surface winds, from the west to northwest, beginning around 18Z Monday.
A short wave trough over the southern plains will deamplify as it lifts northeast through the Ohio Valley during the period. Precip type should be primarily rain for this event, but model soundings show enough evaporative cooling with the initial isentropic lift for some snow/sleet at least in the higher elevations and parts of the north this morning. There may be some light accumulations especially over the higher peaks, but at this time impacts look quite limited.
Ridge axis of high pressure over the west Atlantic builds across the area, with low level winds veering to the south to southeast and increasing through the period. Psg of the cold front by Wed night will bring a return to more seasonal lows. The remainder of the week will by dry and cool as large high pressure upstream over the north Gulf builds across the remainder of the south. Continued advection of cooler dry air will keep cool night time readings in place with L-M40s at night into the weekend and highs only in the 60s Fri through Sunday.
With temps above freezing, rainfall will occur today.
228 AM PST Mon Feb 24 2020 Fair and warmer weather is expected this week under building high pressure and offshore flow.
and Tuesday A cold front has shifted southeast of the area, but low clouds have not developed in its wake. If something does develop, it would probably be flurries or very light drizzle or freezing drizzle, as temperatures in the low-level saturated layer barely get to -10 C. Highs on Tuesday are expected to reach the lower to middle 30s.
Chattanooga Airport, TN 79 56 82 56 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 75 54 78 55 / 10 10 0 0 Oak Ridge, TN 76 53 79 54 / 0 0 0 0 Tri Cities Airport, TN 71 50 73 52 / 20 20 10 0.
Large trough sprawled across the western US will remain nearly stationary over the next 24 hours. A subtle cold front associated with the trough will brush the area late tonight towards morning. The low center that was to our west today will shift northeast through Sunday. Cooler temperatures are expected behind the cold front, with below normal highs. Nighttime lows Sunday night will also be below normal and quite a bit cooler than tonight's. Additional low pressure energy over the Pacific Northwest will keep a mean long wave trough over the western CONUS through the period. Then a better defined low pressure system will break off from the mean trough during the second half of the week.
505 AM EDT SUN MAY 22 2016 A weak frontal boundary will be across north central areas today while low pressure near the Mid Atlantic coast tracks south of the Gulf of Maine. High pressure will build across the region Monday.
Recent PV analysis, real-time data, forecast model soundings and computer simulations suggest that relatively dry southwesterly upper flow will prevail over the majority of the forecast district into Sunday, with the far eastern plains having the highest potential of experiencing storm activity(some potentially severe) into this evening and then again from later Sunday into Sunday evening. Another warm and mainly dry day expected although temps may be a degree or two cooler and sfc winds will be less as a weak short wave ridge moves across the area in the sw flow aloft.
The upper ridge just east of the Red River currently will move eastward today, allowing southwesterly flow aloft to pick up and the pattern to become more active. The most prominent is still rotating through southern California at the base of the main trough and should bring some decent chances tonight.
with a trough along each coast and a ridge over the central part of the US. The ridge axis remains to our west over Texas and Oklahoma this morning. but maybe a degree or two cooler given the high clouds spreading across the area. The ridge axis will gradually shift eastward over the next 36 to 72 hours. as the west coast trough elongates with a series of disturbances.
353 AM EDT SUN MAY 22 2016 A few showers will be possible across the Scioto Valley this afternoon as a low pressure system pushes off to the east.
For the remainder of the day, the upper level trough that moved through yesterday will continue to slowly shift eastward. A disturbance rotating around the back side of this trough may bring some increased cloudiness to the Bluegrass region this afternoon. High pressure at the surface and ridging aloft will slowly build in from the west tonight through Monday.
/issued 250 PM CDT SAT MAY 21 2016/ WV imagery shows West Texas and Southeast New Mexico sitting under an upper-lvl ridge between two systems, one over the Great lakes region, and the other over eastern OR. East of the dryline, sfc analysis shows a ridge of cape in excess of 3000J/kg extending from LBBB-K6R6, w/radar showing convection developing over the Davis Mtns. Monday, continued leeside troughing/sw flow will push the dryline even further east, where it will remain on the eastern fringes of the CWA thru the rest of the week, favoring slight chances of convection each day there.
Isolated showers circulating around the upper closed low continue this morning in the West Central Mountains as of 3 AM MST. Closed low will be well to the region's northeast later this morning, but a few weak disturbances will keep showers in the forecast through Monday. Temperatures will trend warmer through the period.
while low pressure drifts slowly northward through the Gulf of Maine today and early tonight.
317 AM CDT SUN MAY 22 2016 Latest 07z surface analysis shows high pressure from Minnesota/Wisconsin to the Central Plain States. Will continue to focus the higher chances of showers/thunderstorms over these areas.
Water vapor imagery shows ridging over the central and northern plains with a psuedo-omega block pattern given the broad upper low over the Pacific NW and over New England.
324 AM CDT SUN MAY 22 2016 (Today thru Tue) Earlier today, energy on the backside of the upper trough translated to some cloud cover for much of the day. Otw, dry weather with a warming trend as a slow moving but high amplitude ridge moves in.
Cooler than average conditions will continue Sunday with the most concentrated precipitation expected over the Idaho Panhandle. The upper level low is making its move out of northeast OR and is progged to shift into southern Alberta by Sunday morning. Moisture will continue to wrap around the low into the northeast portion of the region mainly across the Northeast Mtns over into the central to northern Panhandle. /SVH 06Z TAFS: A low pressure system will push across the ID Panhandle tonight and into southern Alberta on Sunday. Moisture will wrap around the low into the region with rain expected over the next 24 hours across the Northeast Mtns and into the central to northern ID Panhandle.
339 AM EDT SUN MAY 22 2016 Showers today will give way to drier and warmer weather through mid week. Clouds, rain, and shallow heights are forecast to limit the high temperature to about 5 to 10 degrees below the average.
329 AM CDT WED MAY 11 2016 ABUNDANT LOW LEVEL MOISTURE TRAPPED UNDER AN INTERIM RIDGE OF HIGH PRESSURE EARLY THIS MORNING. CLOSED LOW/TROUGH LIFTING NORTHEAST THROUGH THE PLAINS WAS PRODUCING SOME VIGOROUS CONVECTION/SPORADIC SEVERE STORMS ACROSS THE CENTRAL PLANS. THIS LOW WILL BE OUR WEATHER-MAKER THROUGH THE NEXT 12-24 HOURS. WITH WINDS PICKING UP OUT OF THE WEST IN THE WAKE OF THE LOW. PLAN ON OVERNIGHT LOWS IN THE UPPER 40S TO THE LOWER 50S. PLAN ON HIGHS IN THE LOWER 60S TO NEAR 70.
614 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND LINGER THROUGH THURSDAY.
THERE IS A SMALL CHANCE THAT AN MVFR CEILING OR REDUCTION IN VSBY COULD OCCUR WITH A SHOWER OR THUNDERSHOWER AT TRI OR TYS BUT MOST OF THE FORECAST PERIOD SHOULD REMAIN VFR WHILE THE REGION AWAITS A BETTER CHANCE OF MORE WIDESPREAD CONVECTION WITH A COLD FRONTAL PASSAGE THURSDAY NIGHT.
DRIER AND WARMER WITH SOME PARTIAL CLEARING POSSIBLE LATE IN THE DAY. A COLD FRONT WILL BRING RENEWED SHOWER AND THUNDERSTORM CHANCES BACK INTO THE FORECAST LATER TONIGHT INTO THURSDAY.
TONIGHT THROUGH WEDNESDAY AN UPPER LEVEL LOW PRESSURE STORM CENTER OVER SOUTHEAST MONTANA WILL BRING DOWN CLOD CANADIAN AIR AND SOME MOISTURE PRODUCING MAINLY SNOW SHOWERS WITH SOME THUNDERSTORMS ACROSS THE SOUTH THIS EVENING. CENTRAL AND SOUTHERN WYOMING WILL HAVE FREEZING TEMPERATURES AND FREEZE WARNINGS IN EFFECT LATE TONIGHT AND WEDNESDAY MORNING FOR NATRONA. WEDNESDAY WILL BE COLD AND BREEZY TO WINDY WITH MOUNTAIN SNOW SHOWERS AND RAIN SNOW MIXED SHOWERS IN THE LOWER ELEVATIONS.
510 AM EDT WED MAY 11 2016 CHANGES TO FORECAST -- SMALL CRAFT ADVISORY WAS DISCONTINUED FOR STRAITS OF FLORIDA OCEAN REEF TO WEST END OF SEVEN MILE BRIDGE. AND EXTENDED FOR STRAITS OF FLORIDA WEST END OF SEVEN MILE BRIDGE PAST DRY TORTUGAS. CURRENT SITUATION AND ANALYSIS -- A DEEP LAYER MEAN RIDGE PREVAILS OVER THE REGION. A TIMELY SCATTEROMETER PASS AND REPORTS FROM THE NOAA SHIP NANCY FOSTER OFF THE COAST OF CUBA WERE ABLE TO CONFIRM WEATHER PREDICTION MODEL OUTPUT SHOWING HIGHER WIND SPEEDS OVER THE LOWER STRAITS AND LOWER WIND SPEEDS OVER THE GULF AND BAY WATERS.
THE FRONT LIFTS NORTH AS A WARM FRONT THURSDAY NIGHT.
446 AM CDT WED MAY 11 2016 MAIN CONCERN TODAY AND TONIGHT IS THE COLD FRONT SET TO MOVE THROUGH THE FORECAST AREA STARTING EARLY THIS MORNING IN WESTERN MN. THIS FRONTAL BOUNDARY IS ASSOCIATED WITH A LOW PRESSURE CENTER IN NORTHWESTERN NORTH DAKOTA THIS MORNING.
150 AM EDT WED MAY 11 2016 HIGH PRESSURE OFF THE ATLANTIC COAST WILL CONTINUE RIDGING INTO THE FORECAST AREA THROUGH THURSDAY. MOISTURE WILL INCREASE AHEAD OF AN APPROACHING COLD FRONT.
629 AM EDT WED MAY 11 2016 Upper level trough exits this morning.
342 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL PROVIDE THE AREA WITH DRY WEATHER THROUGH THURSDAY ALONG WITH DAYTIME TEMPERATURES RUNNING SLIGHTLY ABOVE NORMAL.
WITH A COLD FRONT SLOWLY DROPPING SE TOWARDS THE STATE THROUGH TONIGHT. WITH THE BEST POTENTIAL FOR SEEING SOME SVR WX REMAINING NW OF THE CWA ALONG AND JUST AHEAD OF THE COLD FRONT. COOLER CONDITIONS WILL BE SEEN FOR THU COMPARED TO THIS WED AS A RESULT OF INCREASED RAINFALL POTENTIAL AND CLOUD COVER.
UPPER AND SURFACE RIDGING PREVAIL ACROSS THE AREA THIS MORNING. BUT UPPER RIDGING WILL BEGIN TO WEAKEN BY THIS EVENING. AN UPPER TROUGH WILL DRAG A COLD FRONT INTO THE DELTA THURSDAY AFTERNOON AND ACROSS THE AREA DURING THE EVENING HOURS. THE COLD FRONT WILL EXTEND ACROSS THE SOUTHERN PORTIONS OF THE AREA BY MIDNIGHT.
336 AM EDT WED MAY 11 2016 UPPER RIDGE OVER SOUTHEASTERN STATES FLATTENS TODAY AS UPR TROUGH MOVES ACROSS OHIO VALLEY AND MID ATLANTIC REGIONS. WEAK PRESSURE GRADIENT COUPLED WITH BERMUDA RIDGE WILL ALLOW BOTH THE ATLANTIC AND GOMEX SEABREEZES TO PUSH WELL INLAND. PLENTY OF SUN WITH RIDGING ALOFT WILL FAVOR MAX TEMPS IN THE LOWER 90S. THE ATLANTIC SEABREEZE WILL KEEP THE BEACHES IN THE LOWER TO MID 80S WITH BREEZY CONDITIONS DEVELOPING IN THE AFTERNOON BEHIND THE SEABREEZE.
An even warmer day expected on Thursday with showers and thunderstorms anticipated across northwest Montana and along the Continental Divide.
WITH MOST LOCATIONS STILL INTO THE LOW 70S. AN UPPER LEVEL RIDGE IS FORECAST TO BUILD EASTWARD THROUGH THE DAY. WITH THE AXIS OF THIS RIDGE SETTING UP NEAR THE MS/AL STATE LINE. DESPITE THE PROBABILITY FOR SUBSIDENCE OVER THE WEST FROM THE RIDGE. THE RIDGE WILL CONTINUE TO SHIFT TO THE WEST TONIGHT. AS AN UPPER LEVEL TROUGH BEGINS TO PUSH INTO THE PLAINS. A COLD FRONT WILL TRAIL SOUTHWARD FROM THIS LOW. AND ENTER THE LOWER MISSISSIPPI VALLEY BY THURSDAY AFTERNOON. THE WESTERN PERIPHERY OF THE RIDGE WILL REMAIN OVER THE AREA.
High pressure builds today and peaks over the region today into Thursday with a 1000 foot marine layer along the coast.
Mid level thermal ridging will again lead to highs about 10 degrees above normal today. Meanwhile, an upper level trough will move across the Plains today sending a strong cold front south.
LOW PRESSURE WILL MOVE THROUGH THE AREA THIS EVENING. WATER VAPOR SATELLITE INDICATED A NEGATIVE TILTED UPPER TROUGH ACROSS NORTH CENTRAL INDIANA. HRR MODEL INDICATES SHOWERS AND THUNDERSTORMS WILL GRADUALLY END OVERNIGHT AS THE UPPER TROUGH AND MCV MOVE EAST.
643 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND LINGER THROUGH THURSDAY.
419 AM EDT WED MAY 11 2016 A RIDGE OF HIGH PRESSURE WILL REMAIN OVER THE NORTH COUNTRY TODAY THROUGH THURSDAY NIGHT.
HIGH PRESSURE AND DRY AIR WILL BUILD INTO THE REGION THROUGH THURSDAY BEFORE SLIDING OFFSHORE THURSDAY NIGHT.
345 AM PDT WED MAY 11 2016 Dry and warmer weather through Thursday then cooling into the weekend. High temperatures will be around 5-10 degrees above average today and Thursday as the ridge over the eastern Pacific shifts onto the West Coast. Warmest temperatures in the Central Valley will reach the lower to mid 90s.
314 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND LINGER THROUGH THURSDAY.
HIGH PRESSURE BUILDING OVER THE REGION WILL RESULT IN AN INLAND WARMING TREND THROUGH THURSDAY.
335 AM MDT WED MAY 11 2016 AN UPPER TROUGH ACROSS THE NORTHERN ROCKIES WILL MOVE SLOWLY EAST OUT OVER THE GREAT PLAINS THROUGH TONIGHT. A JET STREAK MOVING AROUND THE BOTTOM OF THE TROUGH IS ORIENTED WSW-ENE ACROSS COLORADO THIS MORNING. TEMPERATURES WILL BE 10 TO 15 DEGREES COOLER THAN AVERAGE FOR THIS TIME OF YEAR.
UPPER LEVEL RIDGE OVER THE AREA WEDNESDAY WITH MOSTLY SUNNY SKIES AND WARMER TEMPS. THE RIDGE WILL HOLD THROUGH THURSDAY WITH ANOTHER SUNNY WARM DAY.
637 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL PROVIDE THE AREA WITH DRY WEATHER THROUGH THURSDAY ALONG WITH DAYTIME TEMPERATURES RUNNING SLIGHTLY ABOVE NORMAL.
625 AM EDT WED MAY 11 2016 HIGH PRESSURE AND DRY AIR WILL BUILD INTO THE REGION THROUGH THURSDAY BEFORE SLIDING OFFSHORE THURSDAY NIGHT.
401 AM EDT WED MAY 11 2016 THE AREA WILL REMAIN SITUATED BETWEEN ATLANTIC HIGH PRESSURE AND A PIEDMONT TROUGH THROUGH THURSDAY.
AN UPPER RIDGE WILL START TO BUILD OVER THE REGION TODAY IN RESPONSE TO AN UPPER LOW MOVING SOUTH THROUGH BRITISH COLUMBIA. THE RIDGE WILL BE ACCOMPANIED BY LIGHT WINDS. AND WARMER TEMPERATURES. THE RIDGE WILL AMPLIFY FURTHER ON THURSDAY AHEAD OF AN EASTERN PACIFIC TROUGH.
HIGH PRESSURE ALOFT WILL BUILD ACROSS THE REGION THROUGH THE REMAINDER OF THE WEEK.
THE UPPER LOW THAT HAS BROUGHT THE RAIN AND WIND THE PAST COUPLE OF DAYS IS CURRENTLY OVER NORTHWEST NORTH DAKOTA AND WILL SLOWLY MOVE INTO SOUTHERN CANADA BY THIS EVENING. THERE WILL CONTINUE TO BE A CHANCE FOR A RAIN/SNOW MIX OR SOME WET SNOW THIS MORNING ACROSS SOME OF THE HIGHER TERRAIN ACROSS THE LOWER ELEVATIONS BUT ANY ACCUMULATIONS ARE EXPECTED TO BE MINOR. HIGH PRESSURE RIDGING AND SLOWLY RISING HEIGHTS CAN BE EXPECTED ON THURSDAY WHICH WILL RESULT IN A DRY DAY WITH TEMPERATURES BACK TO AROUND SEASONAL VALUES. A COLD FRONT WILL APPROACH THE NORTHERN PORTIONS OF OUR FORECAST AREA DURING THE AFTERNOON AND MOVE THROUGH THE ENTIRE AREA BY MID EVENING.
607 AM EDT WED MAY 11 2016 UPPER LEVEL TROUGH EXITS THIS MORNING.
448 AM CDT WED MAY 11 2016 LIGHT WINDS CONTINUED THIS MORNING WITH TEMPERATURES IN THE LOW TO MID 70S. AN AREA OF LOW PRESSURE HAD MOVED OUT INTO THE NORTHERN PLAINS AROUND THE DAKOTAS.
158 AM PDT WED MAY 11 2016 A PASSING RIDGE OF HIGH PRESSURE ALOFT WILL GIVE ANOTHER MOSTLY SUNNY, DRY, AND WARM DAY TO THE AREA TODAY. ONSHORE FLOW WILL DEVELOP LATE THIS AFTERNOON AND CONTINUE THROUGH MIDDAY THURSDAY AS AN UPPER LEVEL TROUGH PASSES BY TO THE NORTH OF THE AREA.
500 AM CDT WED MAY 11 2016 A WEAK UPPER LEVEL RIDGE IS CURRENTLY PASSING EAST ACROSS THE EASTERN HALF OF THE COUNTRY. THE STRENGTH OF THIS RIDGE ISN'T PARTICULARLY STRONG AND THUS SHOWERS AND STORMS CAN BE OBSERVED ACROSS SOUTHEAST PORTIONS OF THE CONUS UNDER THIS RIDGE. WHILE INCREASED 500MB HEIGHTS SUGGEST WARMER TEMPERATURES, CLOUD COVER COULD LIMIT THAT WARMING. 9 SATELLITE IMAGERY SHOWING CLOUDS IN THE MORNING TO JUST BE A CIRRUS DECK AND MODELS INDICATING A MID LEVEL DECK NOT DEVELOPING UNTIL 18Z, WILL BE GOING WITH WARMER GUIDANCE FOR MAX TEMPS. A BROAD UPPER LEVEL TROUGH THAT IS CURRENTLY MOVING EAST ACROSS THE NORTHERN ROCKIES WILL CONTINUE EAST ACROSS THE NORTHERN PLAINS TODAY.
AN UPPER LEVEL RIDGE WILL CONTINUE TO BUILD IN FROM THE WEST. THIS WILL ALSO ALLOW STRONG WARMING AND WILL REDUCE THE AREAL COVERAGE OF SUB-FREEZING TEMPERATURES. UNDER THIS RIDGE.
438 AM CDT WED MAY 11 2016 SURFACE ANALYSIS THIS MORNING PLACES A WARM FRONT OVER MISSOURI WITH SOUTHERLY RETURN FLOW PRESENT ACROSS MUCH OF THE LOWER MISSISSIPPI VALLEY. MAINLY RAIN FREE CONDITIONS ARE OCCURRING ACROSS THE MID-SOUTH WITH TEMPERATURES IN THE LOWER 70S AT MOST LOCATIONS. SHORT TERM MODELS INDICATE A COLD FRONT WILL BEGIN TO APPROACH THE LOWER MISSISSIPPI VALLEY LATER TONIGHT AND PUSH THROUGH THE MID- SOUTH ON THURSDAY. SHOWERS AND THUNDERSTORMS WILL DIMINISH ACROSS THE AREA THURSDAY NIGHT FROM NORTHWEST TO SOUTHEAST AS HIGH PRESSURE FILTERS INTO THE MID-SOUTH.
509 AM EDT WED MAY 11 2016 UPPER LEVEL TROUGH EXITS FIRST THING THIS MORNING.
A COLD FRONT WILL SHIFT WINDS AROUND TO THE WEST. A COLD FRONT WILL CROSS ROUGHLY HALF OF OKLAHOMA DURING THE DAY TOMORROW.
354 AM CDT WED MAY 11 2016 UPPER RIDGE ALONG THE WEST COAST EXTENDING INTO THE GULF OF ALASKA. CLOSED LOW OVER THE DAKOTAS. UPPER TROUGH INTO THE GREAT LAKES AND A RIDGE THROUGH THE EASTERN CONUS. COOLER AIR THAN ADVERTISED WITH THE AIR ON THE BACKSIDE OF THE UPPER LOW.
A clear sky across SW KS this afternoon under temporary high pressure ridge axis. Strong closed low well to our north in SE Montana at midday will strengthen further as it tracks into North Dakota through Wednesday morning. Associated cold front will track across SW KS tonight, reaching the far northern zones around 7 pm, Hays and Garden City by 10 pm, Dodge City around midnight, and clearing Barber county around sunrise. Cold front passage expected to be dry across the central and southern zones. Markedly cooler with a gusty N/NE wind continuing. Most locales topping out in the lower 70s. Dry and several degrees warmer. Afternoon highs in the low to mid 70s.
612 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND LINGER THROUGH THURSDAY.
506 AM EDT WED MAY 11 2016 UPPER LEVEL TROUGH EXITS FIRST THING THIS MORNING.
THE STALLED BOUNDARY WILL LIFT BACK A BIT NORTH BUT APPEARS UNLIKELY TO LEAD TO SIGNIFICANTLY ENHANCED STORM CHANCES UNTIL AN UPPER TROUGH SWINGS OUT OF THE ROCKIES AND ACROSS THE TEXAS PANHANDLE TONIGHT. TEMPS WILL BE NOTICEABLY COOLER AS COOL NORTHEASTERLY WINDS STAY IN PLACE INTO THE EVENING.
408 AM EDT WED MAY 11 2016 TEMPERATURES WILL TREND MODESTLY WARMER THROUGH THE END OF THE WEEK.
355 AM EDT WED MAY 11 2016 A RIDGE OF HIGH PRESSURE WILL REMAIN OVER THE NORTH COUNTRY TODAY THROUGH THURSDAY NIGHT.
HIGH PRESSURE WILL BUILD OVER THE WEST COAST AND REMAIN IN PLACE THROUGH THE END OF THE WEEK ALLOWING FOR TEMPERATURES TO CLIMB TO WELL ABOVE NORMAL READINGS. AN AREA OF LOW PRESSURE IS FORECAST TO MOVE INTO NORTHERN CALIFORNIA OVER THE WEEKEND BRINGING SLIGHT COOLING AND LOCALLY BREEZY CONDITIONS.
UPPER LEVEL LOW CURRENTLY OVER EASTERN MONTANA WILL ACCELERATE NORTHEAST INTO NORTH DAKOTA TONIGHT AND INTO SOUTHERN CANADA ON WEDNESDAY. A WARMING TREND WILL BEGIN AS THE UPPER LEVEL RIDGE BUILDS INTO THE ROCKY MOUNTAIN REGION. EARLY MORNING LOW TEMPERATURES ON WEDNESDAY AND THURSDAY MORNING WILL LIKELY BE BELOW FREEZING ALONG AND WEST OF I25 DUE TO CLEARING SKIES OVERNIGHT. AND NEAR FREEZING FURTHER EAST. WARMEST OVER THE LOWER ELEVATIONS IN WESTERN NEBRASKA.
DRY, MAINLY SUNNY, WARM WEATHER WILL PERSIST OVER MUCH OF THE AREA THE NEXT 48 HOURS AS A THERMAL TROUGH SHIFTS INLAND.
650 AM EDT WED MAY 11 2016 Upper level trough exits this morning.
613 AM EDT WED MAY 11 2016 Upper level trough exits this morning.
A BRIEF LULL IN ACTIVITY WILL CONTINUE THIS MORNING WITH WEAK RIDGING ALOFT. BECOMING MORE WIDESPREAD TONIGHT AS AN ASSOCIATED SURFACE COLD FRONT MOVES THROUGH CENTRAL INDIANA. THIS FRONT WILL QUICKLY BE FOLLOWED BY A SECOND COLD FRONT.
635 AM EDT WED MAY 11 2016 DRIER AND WARMER AIR WILL BRIEFLY WORK INTO THE AREA TODAY WITH SOME PARTIAL CLEARING POSSIBLE LATE IN THE DAY. A COLD FRONT WILL BRING RENEWED SHOWER AND THUNDERSTORM CHANCES BACK INTO THE FORECAST LATER TONIGHT INTO THURSDAY.
Upper low beginning to move into North Dakota early this morning. Precipitation shield remains over eastern Montana with some snow over the ridge tops in the southwest zones. The low will continue to drift eastward today with rainfall tapering off during the afternoon. A brief dry period is expected tonight through Thursday morning as an upper ridge begins to build to the west.
THE PERIOD WILL START AS A COLD FRONT IS ADVANCING TOWARDS THE AREA. THE COLD FRONT WILL SWING ON THROUGH THURSDAY NIGHT AND BRING THE BEST CHANCE OF RAIN TO THE AREA.
513 AM CDT WED MAY 11 2016 Surface analysis this morning places a warm front over Missouri with southerly return flow present across much of the Lower Mississippi Valley. As of 4 am CDT, mainly rain free conditions are occurring across the Mid-South with temperatures in the lower 70s at most locations. Short term models indicate a cold front will begin to approach the Lower Mississippi Valley later tonight and push through the Mid- South on Thursday. Showers and thunderstorms will diminish across the area Thursday night from northwest to southeast as high pressure filters into the Mid-South.
642 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL BUILD ACROSS THE REGION TODAY AND LINGER THROUGH THURSDAY.
130 AM EDT WED MAY 11 2016 DRY WEATHER WILL CONTINUE THROUGH THURSDAY, WITH HIGH PRESSURE IN CONTROL.
251 AM EDT WED MAY 11 2016 HIGH PRESSURE AND DRY AIR WILL BUILD INTO THE REGION THROUGH THURSDAY BEFORE SLIDING OFFSHORE THURSDAY NIGHT.
145 AM EDT WED MAY 11 2016 SCATTERED THUNDERSTORMS WILL AFFECT THE AREA THIS EVENING AS A WARM FRONT LIFTS NORTH THROUGH THE AREA. A COLD FRONT WILL BRING ANOTHER CHANCE OF THUNDERSTORMS ON THURSDAY.
343 AM MDT WED MAY 11 2016 UPPER TROUGH AXIS IS CURRENTLY PASSING OVER THE CWA WITH LITTLE CLOUD COVER IN THE SUBSIDENCE BEHIND IT.
446 AM EDT WED MAY 11 2016 HIGH PRESSURE WILL PUSH AWAY FROM THE REGION TODAY AS A WEAK FRONTAL BOUNDARY SAGS INTO THE AREA.