Aikyam-Lab/Synoptic-Bench huggingface dataset:
259 PM EDT THU JUN 30 2016 Scattered showers and thunderstorms are possible on Friday into Friday evening as a cold front moves through the northeast.
339 PM CDT THU JUN 30 2016 Remnants of convection in northwest Iowa behind a departing cold front will scoot south of our forecast area by late this afternoon. In the cold fronts wake, chilly and dry high pressure will takeover tonight, leaving a light northerly wind and clear skies. The high pressure system will move eastward on Friday into central MN and central IA. Warm front and southern stream wave push into the central Plains this weekend, however the latest model runs have trended these features further south, closer to the Nebraska and Kansas border.
Inverted trough extends SW along the eastern edge of the Appalachians from SW Virginia to N Georgia. This trough looks to be evening and early overnight focal point for any convection. Weak cold front will begin to influence the area by Friday afternoon.
412 PM CDT THU JUN 30 2016 A nice dry weekend is in store as the region is situated under anomalously dry air situated over the northeast portions of our region and into the lower Mississippi Valley. Expect with dry conditions tonight and surface ridging building in tonight, expect a cool night with lows dropping even into the upper 60s. Did not go as cool as some of the MOS due to dewpoints likely staying up overnight but still a little cooler in the E/NE. Expect a warming and dry trend through through the weekend as the trough over the Great Lakes quickly moves east tonight, helping to push the trough axis to the east of our area.
630 PM EDT THU JUN 30 2016 Weak high pressure will build over the region tonight then move east on Friday. A warm front will cross the area Friday night.
343 PM EDT THU JUN 30 2016 Wavy cold front slowly pushing into eastern upper MI, and ne and central WI. But clearly the incoming cold front and associated convection is the primary precip threat.
1122 AM MDT THU JUN 30 2016 18Z TAF CYCLE Upper high center has drifted over the southeast half of NM with plentiful moisture in place over the west and northern sections of the state for sct to nmrs showers and storms.
602 PM EDT THU JUN 30 2016 Dry conditions overnight are expected before a cold front increases rain chances for Friday. High pressure will bring dry and mild weather through the holiday weekend.
200 PM EDT THU JUN 30 2016 High pressure lingering over the area today will keep fair weather over the region through this evening. A cold front will move through the area tonight, bringing chances for showers and thunderstorms.
Readings will be about 2-4 degrees warmer compared to yesterday and should top out in the 82 to 85 range. Humidity levels will remain on the low side as dewpoints stay in the 50s. Late tonight into Friday a weak cold front is expected to pass through southern Indiana and parts of central Kentucky.
1234 PM PDT THU JUN 30 2016 The persistent upper level ridge, responsible for our recent hot weather will begin to weaken today. A series of weak cold fronts will bring cooler temperatures by the weekend and periods of breezy winds.
147 PM EDT THU JUN 30 2016 High pressure centered over the area today will shift to the east coast on Friday. This will allow a cold front to sag south across the area tomorrow.
415 PM EDT THU JUN 30 2016 High pressure located over the Ohio River Valley brought about mostly clear skies and light winds for most of the region, creating an overall pleasant afternoon.
113 PM CDT THU JUN 30 2016 Sharp H5 Trof makes Great Lakes passage tonight. It will drive a cold front across the PAH FA, with associated showers/storms, currently seen across central ptns IL-MO, accompanying its passage.
322 PM CDT THU JUN 30 2016 A large ridge of high pressure extended southwest out of the mid Atlantic states into the Tennessee valley region this afternoon. The short term models are in decent agreement involving a weak cold front moving through the lower Ohio valley region tonight. The boundary should lose its strength and weaken considerably as it attempts to move into the surface to upper level ridge axis through Friday.
Even under clear skies this has only allowed temperatures to climb into the 73 to 78 degree range (about 5 degrees cooler than the past few weeks at this time) in most locations.
1239 PM CDT THU JUN 30 2016 Low level ridging has built into AR and ERN TX creating a weak low level jet at 925hPa, which extends from NRN TX up into WRN MO. This is producing isentropic accent in the lower levels, 900-800hPa, in two distinct areas of the CWA, the W and NE portions. A cold front extending through central MN will advect southward to lie just north of the CWA Thursday afternoon into the evening. A MCV associated with the MCS over Nebraska currently, also moves over the CWA with similar timing to the cold front providing even more dynamics to develop scattered thunderstorms through through Thursday night.
303 PM CDT THU JUN 30 2016 A cold front was moving through northwest wisconsin this afternoon and will exit by early this evening. Behind the front, additional showers and storms were found over northeast Minnesota that were driven by positive vorticity advection associated with an upper level long wave trof moving overhead. Behind this trof, a clearing trend was noted on visible satellite imagery. Cool conditions will be over the region tonight as the high pressure drifts into the Red River Valley of the North. Meanwhile high pressure is overhead. The cool northwest flow aloft will keep max temps in the lower 70s, with upper 60s right next to Lake Superior.
203 PM CDT THU JUN 30 2016 Upper level high pressure centered across eastern New Mexico will bring a mild and quiet night across west Texas and southeast New Mexico.
327 PM EDT THU JUN 30 2016 High pressure in control through tonight. A high pressure keeps weather conditions dry under calm or light and variable winds. A cold front approaches from the west later on Friday.
322 PM CDT THU JUN 30 2016 Current synopsis shows broad upper trough over the eastern third of the country and ridge to the west. The local CWA is on the sw cusp of the trough but ridge is building in from the west/northwest.
353 PM EDT THU JUN 30 2016 High pressure over the mid atlantic states will shift to the east coast on Friday. Meanwhile a cold front over the upper Mississippi Valley will move southeast across the area tomorrow.
PLEASANT SPRING DAY WITH TEMPS IN THE LOWER 70S ACROSS THE PLAINS. WHICH WOULD SUPPORT HIGHS IN THE LOWER 80S ACROSS THE PLAINS TOMORROW. THIS MAY LIMIT THE HIGH TEMPS TOMORROW. ON WED AN UPR TROF AND A COUPLE DISTURBANCE MOVE ACRS THE STATE AND IN THE AFTERNOON HOURS CHANCES FOR PCPN LOOK FAIRLY GOOD FROM THE I- 25 CORRIDOR AND WESTWARD. THU AN UPR RIDGE WL BUILD OVR THE WRN STATES AND THE FORECAST AREA LOOKS DRY ALONG WITH WARMER TEMPS. THE UPR RIDGE BREAKS DOWN BY SAT NIGHT AS A NEW SYSTEM MOVES FROM THE PACIFIC NW AND INTO THE NRN ROCKIES.
HIGHS TODAY WILL BE IN THE MID 50S AND LOW 60S TODAY AND IN THE LOW 60S TO LOW 70S ON TUESDAY.
654 PM EDT MON MAY 9 2016 GENERALLY DRY WEATHER WILL CONTINUE THROUGH MID WEEK, AS A LARGE HIGH PRESSURE SYSTEM REMAINS IN CONTROL.
UPWARD FORCING WILL BE MAXIMIZED BY AN UPPER LEVEL TROUGH PASSING BY TO THE NORTH.
LATEST AVAILABLE IR IMAGERY OVERLAID WITH MODEL STREAMLINE ANALYSIS AS OF 200 PM DETAIL UPPER TROUGHING OVER THE WESTERN CONUS. WITH RIDGING ACROSS THE EASTERN CONUS. AT THE SURFACE AND IN THE LOWER TO MIDDLE LEVELS. A 1020-1025 MB SURFACE RIDGING REMAINS ORIENTED ACROSS THE WESTERN ATLANTIC TO THE SOUTHEASTERN STATES. TEMPERATURES HAVE REACHED THE LOWER TO MIDDLE 80S WITH DEWPOINTS IN THE LOWER 60S. A RIDGE OF HIGH PRESSURE WILL REMAIN IN PLACE ACROSS THE WESTERN ATLANTIC AND SOUTHEASTERN UNITED STATES.
Southwesterly flow aloft and ridging at the surface will continue through the night.
TEMPERATURES THIS AFTERNOON WERE RUNNING BETWEEN 5 AND 10 DEGREES WARMER COMPARED TO 24 HOURS AGO. THE HIGH RES MODELS SUCH AS THE HRRR.
AHEAD OF THE MAIN UPPER LEVEL TROUGH STILL BACK IN THE PLAINS. MINIMUM TEMPERATURES SHOULD RANGE FROM THE LOWER 50S FAR NORTH TO THE UPPER 50S FAR SOUTH. THE MAIN TROUGH WILL COME ACROSS THE AREA SO WILL HAVE CHANCE POPS IN THE MORNING. WITH THE WARM FRONT LIFTING NORTH OF THE CWA WE WILL HAVE SOUTHERLY WINDS AND SOME SUNSHINE TO PUSH AFTERNOON TEMPERATURES INTO THE 70S AT MOST LOCATIONS. MAJORITY OF THE CWA WILL MORE THAN LIKELY STAY DRY THROUGH THE NIGHT AS A COMPACT 500MB RIDGE DEVELOPS AND MID-LEVEL HEIGHTS RISE OVER THE UPPER MISSISSIPPI RIVER VALLEY.
1248 PM CDT MON MAY 9 2016 LARGE AND SLOW MOVING UPPER LOW CURRENTLY CENTERED OVER THE NEBRASKA/COLORADO/WYOMING BORDER WILL IMPACT THE REGION FOR THE NEXT SEVERAL DAYS. WITH THE UPPER LOW APPROACHING FROM THE WEST IN THE AFTERNOON. WILL SEE A DECREASE IN CLOUDS WITH HIGHS CLIMBING INTO THE LOWER TO MID 70S IN A SOUTHERLY LOW LEVEL FLOW.
700 PM EDT MON MAY 9 2016 A WARM FRONT NEAR THE OHIO RIVER WILL LIFT SLOWLY NORTH TONIGHT AND TUESDAY.
1139 AM MDT MON MAY 9 2016 THE UPPER LOW OVER SOUTHEAST WYOMING LIFTS INTO SOUTH DAKOTA TODAY AND IS ABSORBED INTO THE UPPER LOW MOVING THROUGH THE NORTHWEST U. TONIGHT AS THE TROUGH EXTENDING FROM THE LOW SWINGS THROUGH THE SOUTHERN PLAINS AND INTO THE CENTRAL U. AS THE UPPER LOW MOVES EAST OF THE NORTHERN ROCKIES ON TUESDAY.
1245 PM CDT MON MAY 9 2016 AT H5 RIDGE OFF THE WEST COAST EXTENDING INTO THE GULF OF ALASKA. TROUGH INTO MONTANA AND NEGATIVELY TILTED TROUGH FROM EASTERN MONTANA INTO THE CENTRAL PLAINS. SHARP RIDGE FROM ILLINOIS INTO NORTHERN MINNESOTA WITH CLOSED LOW OVER THE NORTHEAST CONUS. COLD FRONTAL BOUNDARY LIES ACROSS THE NORTHWEST AND WILL DEVELOP THUNDERSTORMS FROM THE EASTERN NEBRASKA PANHANDLE INTO WESTERN NEBRASKA THIS AFTERNOON WITH COLD POOL ALOFT. THE NEXT UPPER LEVEL LOW WILL BE MOVING EAST THROUGH MONTANA.
/ISSUED 914 AM EDT MON MAY 9 2016/ HIGH PRESSURE WILL REMAIN OVER THE WESTERN ATLANTIC WATERS TODAY ALLOWING FOR AN EASTERLY WIND FLOW TO CONTINUE OVER SOUTH FLORIDA ALONG WITH DRY WEATHER. /ISSUED 332 AM EDT MON MAY 9 2016/ HIGH PRESSURE CONTINUES ACROSS THE FLORIDA PENINSULA AND SURROUNDING WATERS WITH A STATIONARY FRONT EXTENDING EAST-WEST ACROSS THE CAROLINAS AND TENNESSEE.
249 PM CDT MON MAY 9 2016 SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP THIS AFTERNOON ON THE EAST SIDE OF AN UPPER LEVEL LOW CENTERED NEAR PHILLIP. AS THE FIRST UPPER LOW OVER CENTRAL SD EXITS TONIGHT ANOTHER UPPER LOW WILL MOVE IN FROM THE NORTHWEST. IF THE HIGH TEMP REALIZES ITS POTENTIAL THERE COULD BE AN ISOLATED SEVERE STORM OR TWO AHEAD OF THE COLD CORE LOW.
A BROAD UA LOW NOTED ACROSS THE CENTRAL/HIGH PLAINS LATE THIS AFTN IS PROGGED TO EJECT ENE TOWARDS THE LOWER/MID MISSISSIPPI VALLEY. A VEERING VERTICAL WIND PROFILE AND A VEERING HODOGRAPH IN THE LOW LEVELS SUGGESTS POTENTIAL FOR SEVERE STORMS WITH HAIL AND GUSTY THE PRIMARY THREATS.
300 PM MST MON MAY 9 2016 HIGH PRESSURE AND DRY CONDITIONS BUILD INTO THE REGION THIS WEEK FOR A GRADUAL.
315 PM CDT MON MAY 9 2016 UPPER TROUGH MOVING ACROSS THE FCST AREA APPROACHING MID-AFTERNOON. AXIS OF THE TROUGH WILL SHIFT QUICKLY EWD REMAINDER OF THE AFTN AND THIS EVENING. VERY QUICK PERIOD OF SHORT WAVE RIDGING OVERHEAD TONIGHT WILL GIVE WAY TO SOUTHWESTERLY FLOW AS ANOTHER UPPER LOW MOVES ACROSS THE NORTHERN ROCKIES. A NOTABLE INCREASE IN 1000-500 MB THICKNESS POINTS TO WARMER TEMPERATURES TUESDAY AFTN COMPARED TO TODAY. LIKELY ON THE ORDER OF 5-10 DEGREES WARMER AND IN LINE WITH MOS GUIDANCE.
303 PM EDT MON MAY 9 2016 A RIDGE OF HIGH PRESSURE WILL RESIDE OVER THE REGION LATE TODAY AND TONIGHT.
132 PM PDT MON MAY 9 2016 HIGH PRESSURE ALOFT NEAR THE WEST COAST WILL STRENGTHEN.
624 PM EDT MON MAY 9 2016 A WEAK AREA OF HIGH PRESSURE WILL BE ACROSS THE AREA THIS EVENING WHILE A WARM FRONT APPROACHES FROM THE SOUTH.
COVERAGE OF PRECIPITATION WILL SLOWLY EXPAND NORTH NOW INTO THIS EVENING AS THE LOW CONTINUES TO TRACK NORTH. STILL EXPECT AREAL COVERAGE TO BECOME MORE SCATTERED IN NATURE AND HAVE ALREADY SEEN THIS TREND THE PAST FEW HOURS AS LOW LEVEL LIFT BROADENS OUT AND THE CLOSED LOW MORPHS INTO AN OPEN SHORT WAVE. MID/UPPER LEVEL LOW OVER EASTERN IDAHO MOVES EAST INTO SOUTHEASTERN MONTANA TONIGHT. WILL MONITOR SEVERE PARAMETERS ON TUESDAY WITH HIGH RES GUIDANCE DEPICTING A NARROW BAND OF ELEVATED CAPE ALONG THE TROUGH AXIS OVER MY CENTRAL AND NORTHWEST AREAS.
628 PM EDT MON MAY 9 2016 A RIDGE OF HIGH PRESSURE WILL RESIDE OVER THE REGION LATE TODAY AND TONIGHT.
339 PM CDT MON MAY 9 2016 UPPER LOW CURRENTLY OVER SOUTHEAST SOUTH DAKOTA WILL CONTINUE TO OPEN AND BECOME A NEGATIVELY TILTED TROUGH WITH THE TROUGH AXIS EXTENDING FROM THE WESTERN DAKOTAS INTO WESTERN MISSOURI/WESTERN IOWA BY 06Z TONIGHT. THE UPPER TROUGH AXIS WILL SWING EAST OF OUR AREA BY MORNING.
346 PM CDT MON MAY 9 2016 TEMPERATURES ARE A BIT COOLER THAN EXPECTED TODAY ACROSS THE MIDSOUTH. MOST OF THE AREA HAS ONLY MANAGED TO CLIMB INTO THE LOW 70S. EVEN WITH DEW POINTS IN THE LOW TO MIDDLE 60S WE HAVE ONLY BEEN ABLE TO EEK OUT 300-400 J/KG OF CAPE IN EAST ARKANSAS WHERE IT IS CURRENTLY MOST UNSTABLE. AS THE TROUGH ATTAINS A STRONG NEGATIVE TILT IT SHOULD BE EASY TO TRANSFER SOME OF THAT ENERGY TO THE SURFACE.
133 PM EDT MON MAY 9 2016 HIGH CLOUDS PERSIST OVER EAST TN THROUGH TONIGHT AS LOW PRESSURE SYSTEM IN THE PLAINS CONTINUES TO MOVE SLOWLY EAST.
UNSETTLED AND COOLER CONDITIONS ARE EXPECTED ON TUESDAY WITH A FEW SHOWERS. A MINOR UPDATE FOR THIS AFTERNOON AND TONIGHT AS A COLD FRONT SWEEPS SOUTHWARD OVER NORTHERN NEVADA.
ENERGETIC UPPER TROUGH WAS MOVING IN FROM THE NNW WITH CLOUDS AND SHOWERS IN NORTHERN ZONES. UPPER LOW WITHIN THE TROUGH.
Noticeably warmer. Short high pressure ridge axis passes SW KS around sunrise, with SW flow aloft by afternoon. Strong closed low will be well north of SW KS, in the Dakotas, by afternoon, while the associated cold front approaches the NW zones late in the day. Feel the marginal wind/hail threat will extend down the cold front to include the far SW counties as well, especially through Tuesday evening.
131 PM PDT MON MAY 9 2016 A cold front will push through northern Nevada this evening bringing gusty northerly and easterly winds through Tuesday.
606 PM EDT MON MAY 9 2016 LOW PRESSURE OVER THE PLAINS WITH A WARM FRONT EXTENDING EAST INTO SOUTHERN INDIANA WILL MOVE SLOWLY NORTHEAST OVER THE NEXT FEW DAYS. SHOWERS AND A FEW THUNDERSTORMS ARE EXPECTED THROUGH TUESDAY NIGHT AS WARMER AND MORE MOIST AIR LIFTS NORTHEAST AHEAD OF THIS SYSTEM.
HIGH PRESSURE SURFACE AND ALOFT WILL HOLD OVER THE GULF OF MEXICO AND FLORIDA FOR THE NEXT COUPLE OF DAYS. REX BLOCK WILL TAKE SHAPE OVER THE EASTERN PACIFIC WITH A DOWNSTREAM TROUGH THROUGH THE INTER-MOUNTAIN WEST. FOLLOWED BY A STRONG U/L RIDGE OVER THE GREAT LAKES EXTENDING NORTH INTO CANADA. THIS WILL MAINTAIN AN EAST TO SOUTHEAST BOUNDARY LAYER FLOW ACROSS THE PENINSULA WHICH WILL GRADUALLY ALLOW L/L MOISTURE TO RECOVER WITH DEW POINTS CLIMBING GENERALLY INTO THE LOWER 60S. AS AN UPPER RIDGE FLATTENS ACROSS THE GULF OF MEXICO AND WESTERN ATLANTIC.
1222 PM MDT MON MAY 9 2016 THE UPPER LOW IS CURRENTLY MOVING VERY SLOWLY EAST ACROSS EASTERN WYOMING EARLY THIS MORNING AND WILL SLOWLY MAKE ITS WAY EAST ACROSS SOUTH DAKOTA BY THE AFTERNOON HOURS. ANOTHER UPPER LOW CURRENTLY OVER NORTHEASTERN WASHINGTON STATE WILL BE MAKING ITS WAY EAST ACROSS SOUTHERN MONTANA ON TUESDAY. COVERAGE OF SHOWERS TOMORROW SHOULD BE LESS AND WITH A BIT FASTER STORM MOTIONS NOT EXPECTING SIGNIFICANT ACCUMULATIONS FOR THE HIGHER ELEVATIONS. WITH ANOTHER UPPER TROUGH TO THE WEST TOMORROW SCATTERED SHOWERS AND A FEW THUNDERSTORMS (ESPECIALLY ALONG THE COLORADO BORDER) A DECENT BET FOR TOMORROW SO WILL CONTINUE WITH CHANCE POPS MOST AREAS FOR THE AFTERNOON HOURS.
355 PM EDT MON MAY 9 2016 HIGH PRESSURE WILL PREVAIL INTO MID WEEK.
1145 AM MDT MON MAY 9 2016 AVIATION SECTION UPDATED WIDESPREAD PRECIPITATION ASSOCIATED WITH A LOW PRESSURE TROF WILL CONTINUE ACROSS THE REGION. AN UPPER LEVEL LOW PRESSURES SYSTEM WILL REMAIN OVER CENTRAL AND SOUTHWEST MONTANA THROUGH TUESDAY.
ANOTHER AREA OF CONCERN WILL BE IN CENTRAL SOUTH DAKOTA CLOSER TO THE UPPER LEVEL LOW. BY MID AFTERNOON A FRONT WILL APPROACH FROM THE WEST AND WITH CONVECTIVE TEMPERATURES IN THE LOW TO MID 70S WE SHOULD BE ABLE TO BREAK THE CAP IN A FEW SPOTS. ESPECIALLY WITH FREEZING LEVEL ABOUT 9000 FEET.
343 PM EDT MON MAY 9 2016 LATEST SURFACE ANALYSIS SHOWS HIGH PRESSURE WELL INTO THE ATLANTIC WITH LOW PRESSURE OVER THE MIDWEST LEAVING THE AREA BETWEEN MAJOR PRESSURE SYSTEMS.
Perhaps subsidence from the passing upper trough is transferring more momentum to the surface and resulting in the higher wind speeds.
345 PM CDT MON MAY 9 2016 THE TAIL END OF A NEGATIVELY TILTED UPPER LEVEL TROUGH AXIS WILL SWEEP THROUGH THE FORECAST AREA TONIGHT. BUT THESE SHOWERS SHOULD COME TO AN END THIS EVENING AS THE TROUGH AXIS LIFTS TO THE NORTHEAST.
336 PM EDT MON MAY 9 2016 A WARM FRONT NEAR THE OHIO RIVER WILL LIFT SLOWLY NORTH TONIGHT AND TUESDAY.
235 PM MDT MON MAY 9 2016 COLORADO IS IN-BETWEEN SYSTEMS TODAY WITH MAIN ELONGATED UPPER TROF OVER CENTRAL PLAINS AND EXTENDING NORTHWARD TO SOUTH DAKOTA. THERE IS WEAK SUBSIDENCE BEHIND THE TROF AS WEAK RIDGING MOVES INTO WESTERN COLORADO. HIGHEST COVERAGE WILL BE OVER THE MOUNTAINS WITH FAVORED OROGRAPHIC FLOW AND ALSO OVER HIGHER TERRAIN OF THE CYS RIDGE. COVERAGE WILL BE MORE ISOLATED FURTHER EAST OFF THE HIGHER TERRAIN. THE NEXT UPPER LOW WILL BE MOVING INTO THE NORTHERN ROCKIES ON TUESDAY WITH A JET STREAK NOSING INTO NORTHERN COLORADO. AN ASSOCIATED WEAK COLD FRONT WILL PROVIDE SOME WEAK CONVERGENCE WITH FOCUS AREA ALONG PALMER DIVIDE FOR TUESDAY AFTERNOON. QG LIFT ASSOCIATED WITH THE CYCLONE CROSSING THE NORTHERN ROCKIES WILL KEEP SOME PRECIPITATION THREAT OVER THE AREA TUESDAY NIGHT.
AS THE UPPER LEVEL LOW GRADUALLY DRIFTS EASTWARD THE POTENTIAL FOR CONVECTION LOWERS WITH DRY AIR MOVING INTO THE AREA. THE LOWER LEVEL CLOUDINESS SHOULD FADE AROUND SUNSET WITH CIRRUS STREAMING OUT OF MEXICO ANTICIPATED FOR THE OVERNIGHT HOURS. A WEAK 500 MB TROUGH IS EXPECTED TO RIDE WITHIN A MID-LEVEL SOUTHWEST-TO-NORTHEAST FLOW OVER DEEP SOUTH TEXAS AND THE RIO GRANDE VALLEY TODAY. THE PROGRESSION OF THE 500 MB TROUGH INTO THE MISSISSIPPI VALLEY WILL LEAVE DRY WEATHER FOR THE BRO CWFA TONIGHT.
259 PM EDT MON MAY 9 2016 WARM FRONT MOVES SLOWLY NORTHWARD INTO THE AREA BEFORE STALLING ON TUESDAY.
345 PM CDT MON MAY 9 2016 LOW PRESSURE REMAINS STATIONARY OVER SOUTHERN SOUTH DAKOTA RESULTING IN RAIN SHOWERS CONTINUING ACROSS THE NORTHERN CWA THROUGH THE EARLY EVENING HOURS. AS THE LOW PUSHES NORTH AND EASTWARD. OVERNIGHT LOWS ACROSS THE REGION WILL BE IN THE LOW TO UPPER 40S. WITH THE BEST CHANCE FOR WARMER LOW TEMPERATURES TOWARDS THE EAST WHERE CLOUD COVER WILL LINGER LONGER OVERNIGHT. A RIDGE OF HIGH PRESSURE WILL KEEP CENTRAL NEBRASKA DRY. FEW CLOUDS ACROSS THE REGION WILL ALLOW TUESDAY HIGH TEMPERATURES TO REACH UP INTO THE LOW 70S ACROSS THE SOUTHEAST PORTION OF THE CWA. RAIN CHANCES RETURN ON TUESDAY AFTERNOON AS A LOW PRESSURE SYSTEM DEVELOPS ACROSS SOUTHERN NEBRASKA.
A RATHER STABLE AND DRY AIR MASS HAS PREVAILED DURING THE PAST FEW DAYS OVER THE AREA, BUT WINDS VEERING TO THE EAST WILL CONTINUE TO MODIFY THE LOWER LEVELS WITH INCREASING MOISTURE FROM THE COASTAL WATERS.
TEMPERATURES SHOULD BE SLIGHTLY WARMER THAN NORMAL THROUGH THE SHORT TERM PERIOD. BUT EXPECT MORE SUN TUESDAY TO RESULT IN A WARMER DAY.
237 PM CDT MON MAY 9 2016 AN AREA OF LOW PRESSURE FORMED IN THE WAKE OF THE SHOWERS AND THUNDERSTORMS EARLIER IN THE MORNING OVER SOUTH CENTRAL TEXAS. THIS LOW CAUSED FOR SE WINDS TO INCREASE WITH STRONG GUSTY WINDS OVER THE GULF WATERS. LONG WAVE TROUGH OVER THE NORTH CENTRAL PLAINS WILL DRIFT EASTWARD BUT WILL NOT CAUSE MUCH OF AN IMPACT FOR THE CWA AS SE WINDS REMAIN THROUGH THE PERIOD.
AS RIDGING INTENSIFIES OVER THE NEXT FEW DAYS, AND THE THERMAL TROUGH STRENGTHENS AT THE SURFACE, WINDS WILL BECOME PREDOMINANTLY EASTERLY. THIS PATTERN, TYPICAL FOR THE WARMER MONTHS, WILL RESULT IN SEVERAL WARM, DRY, AND CLEAR DAYS FOR THE VAST MAJORITY OF THE AREA.
112 PM EDT MON MAY 9 2016 VFR CONDITIONS WILL PREVAIL MUCH OF THE FORECAST PERIOD EVEN AS CLOUDS GRADUALLY THICKEN AND LOWER AS BAND OF MOISTURE SLOWLY EDGES NORTH THROUGH THE AREA OVERNIGHT INTO TUESDAY AND OVERCOMES DRIER LOW LEVEL EASTERLY FLOW COMING FROM HIGH PRESSURE CENTERED JUST NORTH OF THE AREA. AS MOISTURE AXIS/850-700 MB THETA-E RIDGE ENCOMPASSES SOUTHERN TWO THIRDS OF THE CWA. TEMPERATURES WILL BE HARD PRESSED NOT TO RISE INTO THE 60S EVEN WITH UNFAVORABLE COOLER EASTERLY FLOW.
A COLD FRONT MOVES SOUTHWARD ACROSS CENTREAL NEVADA THIS EVENING AND BRINGS WINDY CONDITIONS. COOLER AND UNSETTLED CONDITIONS EXPECTED TUESDAY WITH LIGHT SHOWERS AND A THUNDERSTORM OR TWO WILL BE POSSIBLE OVER NORTHEAST NEVADA. NIGHTTIME TEMPERATURES WILL BE AT OR BELOW FREEZING AT MANY LOCATIONS TONIGHT AND TUESDAY NIGHT.
THE BEST LOW LEVEL WIND SHEAR WILL BE ALONG THE RED RIVER FROM INTERSTATE 35 EASTWARD IN THE VICINITY OF PSEUDO-WARM FRONT. STORMS SHOULD END QUICKLY FROM WEST TO EAST DURING THE EARLY EVENING HOURS WITH THE PASSAGE OF AN UPPER LEVEL TROUGH. DRY AND SUBSIDENT AIR WILL MOVE IN OVERNIGHT AND TUESDAY MORNING IN THE WAKE OF THE DEPARTING UPPER TROUGH.
A LOW PRESSURE SYSTEM DRIVING SOUTHEASTWARD THROUGH THE ROCKY MOUNTAIN REGION WILL MOVE AWAY FROM THE PACIFIC NORTHWEST TONIGHT. AN UPPER RIDGE WILL BE NEAR THE COAST IN THE MID WEEK PERIOD WITH DRY AND WARMER WEATHER.
443 PM EDT MON MAY 9 2016 WARM FRONT MOVES SLOWLY NORTHWARD INTO THE AREA BEFORE STALLING ON TUESDAY.
147 PM MDT MON MAY 9 2016 THE UPPER LOW OVER SOUTHEAST WYOMING LIFTS INTO SOUTH DAKOTA TODAY AND IS ABSORBED INTO THE UPPER LOW MOVING THROUGH THE NORTHWEST U. TONIGHT AS THE TROUGH EXTENDING FROM THE LOW SWINGS THROUGH THE SOUTHERN PLAINS AND INTO THE CENTRAL U. AS THE UPPER LOW MOVES EAST OF THE NORTHERN ROCKIES ON TUESDAY.
348 PM EDT MON MAY 9 2016 GENERALLY DRY WEATHER WILL CONTINUE THROUGH MID WEEK, AS A LARGE HIGH PRESSURE SYSTEM REMAINS IN CONTROL.
WATER VAPOR IMAGERY/RAP 500MB ANALYSIS/RADAR MOSAIC EARLY THIS MORNING SHOWING A CLOSED LOW OVER EASTERN WY/CO WITH A WING OF PV- ADVECTION AND ASSOCIATED SHOWER/THUNDERSTORMS ROTATING NORTHWARD THROUGH EASTERN NEB. QUITE OVER OUR LOCAL AREA RIGHT NOW UNDER A RIDGE OF HIGH PRESSURE WITH SOME CONVECTIVE MID/HIGH CLOUD DEBRIS OVERHEAD. WILL SEE AN UPTICK IN SHOWER/ISOLATED THUNDER CHANCES TONIGHT AS THAT CLOSED LOW OPENS INTO A TROUGH AND LIFTS NORTHEAST INTO THE REGION. INCREASING LIFT/MOISTURE FEED AHEAD OF THE TROUGH COULD PRODUCE ANY WHERE FROM 1/10 INCH TO LOCALLY 3/4 INCH OF RAINFALL. TAPERING OFF TUESDAY NIGHT AS THE TROUGH CONTINUES TO LIFT THROUGH THE REGION.
HIGH PRESSURE RIDGE EXTENDING FROM THE ATLC ACROSS FL PENINSULA WILL STRENGTHEN SLIGHTLY AND KEEP A PERSISTENT SE FLOW OVER THE AREA. FORECAST MODEL SOUNDINGS SHOW MOISTURE WILL INCREASE IN THE LOW LEVELS AND HIGH ALOFT. THE MOISTURE IN THE LOW LEVELS LOOKS THIN SO DO NOT EXPECT MUCH PRECIP OUT OF IT BUT A FEW SPRINKLES WILL BE POSSIBLE NEAR THE COAST IN THE MORNING. THE FORECAST MIDWEEK AND ONWARD PREDICATED ON EROSION OF THE RIDGE OVER THE AREA. WITH SOME M60S IN THE NORMALLY COOLER SHELTERED LOCATIONS AND AROUND 70F ALONG THE SPACE/TREASURE COAST BARRIER ISLANDS. (FROM PREV DISC) AXIS OF ELONGATED MID LEVEL SHORT WAVE TROUGH WILL SLIDE EWD. HIGH PRESSURE RIDGE WILL STRENGTHEN A BIT TONIGHT AND PRODUCE SE WINDS 15 TO 20 KNOTS OVER MUCH OF THE ATLC COASTAL WATERS SO WILL HEADLINE SMALL CRAFT EXERCISE CAUTION.
141 PM EDT MON MAY 9 2016 A WARM FRONT WILL LIFT NORTH TO THE OHIO VALLEY TODAY.
HIGH PRESSURE RIDGE TO THE SOUTH ACROSS NORTH CENTRAL FLORIDA WILL TRACK TO THE EAST-NORTHEAST OVER THE OPEN ATLANTIC BY TUESDAY RESIDING ABOUT 675 MILES EAST OF MYRTLE BEACH.
AS A LOW PRESSURE SYSTEM APPROACHES FROM THE WEST. AN MCS WILL LIKELY DEVELOP ACROSS THE LOWER OHIO VALLEY.