Aikyam-Lab/Synoptic-Bench huggingface dataset:
Expect widespread precipitation to continue through the bulk of the morning hours as the upper low moves northeast into northeast Kansas by 00Z Tuesday. Precipitation type still looks to be freezing rain across north central and far northern Kansas into the mid to late morning hours and will continue with the current ice storm warning in those areas through 18Z. Areas just to the southeast will see a mix of rain or freezing rain through 12Z and will keep this area until then. Temperatures should continue to increase through the day across the area ending the threat for freezing rain. Temperatures should top out in the mid 30s in north central Kansas to the lower 50s in east central Kansas. Tonight precipitation will come to an end in the evening hours as lift shifts off to the northeast as the upper low departs.
1049 PM CST Sun Jan 15 2017 Short Term (Tonight - tomorrow night): Freezing rain is transitioning to rain as the freezing line is lifting north across the CWA. That freezing line currently extends from MCI to Moberly line. Areas north of that line will continue to see freezing rain into tonight however accumulations are expected to be limited mainly to untreated, elevated surfaces, and other objects. By sunrise tomorrow, the entire CWA will be above freezing and the upper level system that brought the weekend ice will move through the area. An associated cold front will move through the CWA tomorrow afternoon continuing shower chances and in fact a thunderstorm can not be ruled out.
Temperatures are expected to climb above freezing in southeast Nebraska and southwest Iowa by late morning into the early afternoon which should limit ice accumulations in those areas during that time. Still not much cold air available for this system with snowfall expected to be quite limited on the backside through the evening as it tracks rapidly towards the lower Great Lakes region. Most of the precip should be east of the area by 06Z with trailing upper trough helping to kick mid level moisture eastward through 12Z.
331 AM EST Mon Jan 16 2017 A warm front will bring warmer temperatures today, with increasing rain chances tonight and Tuesday.
Under continued mostly sunny skies through much of day, Monday's high temps should rise well into the 30s over much of the west half of Upper Mi with cooler low 30s temps east, downwind of Lake Mi in a sw flow. Wed and Thu look dry and warmer thanks to increased ridging aloft. Late this week into this weekend is highly uncertain as models depict the upper ridge being attacked by multiple waves coming in from the W. Highs will be around 40F and lows should be near or just above freezing. As the high moves off to the east overnight, increasing w to sw winds above a sfc based inversion will result in LLWS at CMX and SAW. Winds will then diminish to under 15kt Mon afternoon thru Tue as a high pres ridge moves over the area.
Some models suggest the tail end of the deformation precip band curling around the backside of this low could make it that far S.
South winds will increase later this morning ahead of a cold front which will approach the area tonight. Cold front will move through the CWA during the day tomorrow.
105 AM EST Mon Jan 16 2017 High pressure to the north will push a little cooler air into the forecast area Monday. The high will be off the coast and a southerly flow on the backside of the high will dominate Tuesday.
328 AM EST Mon Jan 16 2017 A warm front will bring warmer temperatures Monday, with increasing rain chances Monday night and Tuesday.
In the northern stream, water vapor loop indicated a short wave trough from southeast SASK to MT. Only mid and high level clouds associated with the trough along the International border and into Canada. Trough will move across the area this afternoon and tonight. Upper level ridge over the Pacific northwest will move across the area Tue with the upper level jet to the north. Upper level trough in the southern stream will be far enough south and east to keep precip south of the area on Mon afternoon/Mon night.
1110 PM EST Sun Jan 15 2017 High pressure will remain over Pennsylvania tonight.
The higher elevation bench lands of eastern ND and forested areas of northwest through west central MN mixed out a bit earlier this afternoon while remaining cold air pockets in the lower elevation RRV floor should warm through the late afternoon. a low pressure system now moving into the southern and central plains states will draw a more moist and overall warmer airmass northward and into the area tonight through Monday.
With radar echoes moving across the Illinois River Valley, cannot rule out some patchy freezing drizzle for the next couple of hours before readings climb above freezing by dawn. Thus far the lowest visibilities have been centered from the St. With warm front well to the south and E/SE boundary layer flow expected to persist all day, think visibilities will eventually decrease across all of central and southeast Illinois this morning. Showers will eventually become widespread this afternoon/evening as low pressure and its accompanying warm front lift northward into the area. As low pressure tracks into the Great Lakes, it will pull a weak cold front through central Illinois late tonight.
However, areas of freezing rain and freezing drizzle, and perhaps some sleet, will persist for locations generally northwest of Pratt-Lyons-Salina where temperatures are at or just below freezing. Otherwise, with the exception of a cooler Tuesday, quiet weather and above normal temperatures will prevail this week.
Area of rain and freezing rain is currently moving through northeast and north central KS. Where temperatures are above freezing the rain has pretty much come to an end besides some drizzle and maybe an isolated shower. Where temperatures are below freezing minor ice accumulation is taking place, but the ice:liquid ratios are fairly low. The only exception would be far north central KS where temperatures hover around freezing through tomorrow morning. As the precipitation type turns over to rain for most locations tonight the main upper level low pressure lifts over the area. As the upper low tracks overhead a dry slot moves in from the southwest tomorrow afternoon. In the mid-range forecast period beginning Tuesday, split flow regime takes hold over the Central CONUS with ridging building over the Central Plains into mid week.
An upper level trough has lifted north to the Central Plains leaving behind a weak cold front between the I-35 corridor and the Coastal Plains and a larger upper level trough over the southwestern states to off the Baja California coast.
400 AM CST Mon Jan 16 2017 While the focus of this forecast remains on the ejecting circulation moving northeast across the southern Plains early this morning, the impacts will be rather minimal compared to the past weekend as surface temperatures will finally be ranging above freezing. This has resulted in temperatures rising above freezing in all but extreme north central to northeast Missouri counties early this morning. Current timing of the retreating surface freezing line has it moving north of Missouri around sunrise, thus the threat of icing will finally end. However, there might still be a slight chance for some icing to persist into the post sunrise hours of today thanks to surfaces that are still below freezing; though even those surfaces will warm up by mid-morning.
The significant upper level storm system will continue moving northeast across Texas overnight into Monday, bringing increased moisture and lift, and the cold frontal boundary to approach the area.
214 AM MST Mon Jan 16 2017 09z surface analysis had weak trough/cold front from north central ND into eastern WY. Upper low spinning over western OK pushing a band of mixed precipitation to the SD border in south central SD. Temperatures will be cooler over the higher terrain today, but slightly warmer over the plains given boundary layer mixing. Tonight and Tuesday, upper ridge builds into the CWA with lovely warm air advection.
The advisory will be for a mix of snow, sleet, and freezing rain.
321 AM EST Mon Jan 16 2017 High pressure will build over the area through tonight. A stationary front over the southern mid-Atlantic states will move north as a warm front Tuesday.
1141 PM CST Sun Jan 15 2017 Water vapor imagery shows upper low currently churning over far sw TX with strong upper diffluence lifting over the southern high Plains. Cold front is still down over southern TX and has moved little over last 24 hours. Temps are expected to stay at or just below freezing tonight for areas generally north of a Hutch to Marion line and this is where we'll keep the warning in effect overnight. By Mon afternoon, the upper low will be lifting across northeast KS, with the better precip chances over eastern Nebraska and Iowa. Main Aviation Hazards: Freezing rain potential in west-central through north-central Kansas overnight into Monday morning, LIFR conditions area-wide tonight into Monday morning, and a low-level wind shear threat at the ICT and CNU terminals overnight into mid morning Monday.
249 AM EST Mon Jan 16 2017 High pressure will move east today as low pressure tracks north of the region. A weak cold front will then cross the state tonight. High pressure is expected to build back across the region on Tuesday.
Tranquil boating conditions will continue over the Gulf waters the remainder of tonight as high pressure to the north remains in control with east winds around 10 knots and seas of 2 feet or less expected.
As upper system and warm front move north tonight.
449 AM EST Mon Jan 16 2017 High pressure will provide the region with dry, seasonably chilly weather today. An approaching frontal complex will bring rain Tuesday, with an initial period of freezing rain expected, especially in the morning.
1244 AM EST Mon Jan 16 2017 A ridge of high pressure will build east from the Great Lakes overnight and will remain over the north country through Tuesday morning.
Temperatures ranged from the mid 20s to the lower 30s. The well advertised low pressure system that will move into the Great Lakes during the week, has trended well to the south and east over the past several model runs. Main concern in the extended is the low moving into the Upper Midwest from the Central Plains Monday evening through Tuesday. As a result, expect the highest precipitation chances across far southeastern locations in NW WI. Still expecting a wintry mix of snow, freezing rain, sleet and rain. Mid to late in the week high pressure will build over the region from the southeast with good agreement between the GFS/ECMWF and CMC. The the ridge will remain southeast of the region.
202 AM CST Mon Jan 16 2017 The upper low that brought thunderstorms to the area yesterday has lifted into the Plains this morning. An upper trough will lag back to our west behind the main system over the Plains. This will bring another chance for showers Tuesday along with cooler temperatures behind a cold front.
The increase in south winds is in response to a short wave trof forecast to lift northward into the Plains States tonight. The aforementioned s/wv trof will lift towards the Great Lakes Region on Tuesday and push a weak front into northern Mississippi and western Tennesse. A northern stream s/wv trof will quickly follow and re-generate convection along the stalled out front Tuesday night, and kept likely rain chances across areas north of I-20.
258 AM MST Mon Jan 16 2017 An area of light snow and/or freezing rain continues to pivot from the southern Nebraska Panhandle into far southeastern Wyoming this morning. Any lingering threat of freezing rain along I-80 from Sidney to Kimball should end soon as forecast soundings still show cooling profiles through the night, but any snow on top of the ice that has already accumulated will yield hazardous travel. The Winter Adzy for Snow/Freezing rain still looks good but expect we will be able to cancel it early.
A broad, low-amplitude upper level ridge will remain across the GOMEX and southeast CONUS as a stacked low pressure system lifts NEWD from the Central Plains into the Midwest.
1252 PM EDT WED APR 20 2016 HIGH PRESSURE BUILDS OVER THE AREA TODAY. THE HIGH MOVES OFF THE COAST THURSDAY.
1224 PM EDT WED APR 20 2016 A WARM FRONT WILL LIFT NORTH INTO THE REGION THIS AFTERNOON INTO TONIGHT.
THE LARGE UPPER LEVEL LOW OVER THE PLAINS WILL SEND A COUPLE OF IMPULSES TOWARD MID TN.
BUT THE THREAT FOR HEAVY RAINFALL WILL CONTINUE THIS AFTERNOON MAINLY FOR THE LOWER TOLEDO BEND COUNTRY INTO NCNTRL LA ESPECIALLY AS SOME INSTABILITY DOES TRY TO EXPAND NE OVER THIS AREA.
WITH WEAK HIGH PRESSURE RIDGING OVER THE STATE WINDS WILL BE LIGHT FOR TODAY.
A WEAKENING UPPER LEVEL TROUGH MAY PRODUCE A FEW SHOWERS OVER THE MOUNTAINS TODAY.
741 AM EDT WED APR 20 2016 HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTH THROUGH TONIGHT, THEN GRADUALLY MOVE OFFSHORE THURSDAY.
1036 AM MDT WED APR 20 2016 TODAY/S WEATHER WILL CONTINUE TO BE DICTATED BY THE CLOSED LOW WHICH HAS IMPACTED THE REGION SINCE LATE LAST WEEK. THE LOW CENTER HAS CONTINUED TO SLOWLY SHIFT TO THE EAST OVER THE PAST 24 HOURS AND WAS CENTERED OVER THE PANHANDLE REGION OF WESTERN NEBRASKA EARLY THIS MORNING. SNOW ACCUMULATIONS IN THE HIGHER TERRAIN ARE EXPECTED TO REMAIN LIGHT WITH MINOR IMPACTS TO ROADWAYS OVER THE MOUNTAIN PASSES IN THE AREA. A HIGH PRESSURE RIDGE BUILDS OVER THE AREA THURSDAY AND CONDITIONS WILL REMAIN DRY DURING THE EARLY PART OF THE DAY. RESIDUAL MOISTURE AND INSTABILITY ASSOCIATED WITH DAYTIME HEATING WILL BRING ABOUT SOME ISOLATED SHOWERS OVER THE HIGH COUNTRY.
STRENGTHENING HIGH PRESSURE WILL BRING CLEAR SKIES AND A WARMING TREND TO THE REGION THROUGH THURSDAY. A SERIES OF PACIFIC LOW PRESSURE SYSTEMS WILL BRING COOLER TEMPERATURES.
OTHERWISE AM EXPECTING SOME SHOWERS AND ISOLATED THUNDERSTORMS TO MOVE IN FROM THE NORTHWEST DURING THE AFTERNOON ON THE BACKSIDE OF DEPARTING UPPER LOW CENTER WHICH BY 00Z IS FORECAST TO BE IN IOWA. CURRENTLY EXPECTING HIGH TEMPERATURES IN THE MID 50S TO LOW 60S BUT THEY COULD BE A FEW DEGREES COOLER DEPENDING ON EXTENT OF CLOUDINESS ASSOCIATED WITH THE PRECIPITATION.
1019 AM MDT WED APR 20 2016 SATELLITE PICTURES ARE SHOWING THE UPPER LOW CIRCULATION CENTER OVER THE NORTHEAST TIP OF COLORADO RIGHT NOW.
Large upper low will begin shifting east of the area as an open wave late tonight into Thursday as it phases with the northern jet stream. Scattered showers are possible late tonight and into Thursday as this system passes through with the highest chances across northern Missouri. Low-level ridging building in behind this system will finally bring an end to precipitation chances altogether Thursday evening. Broad upper-level ridging will build into much of the central U.
852 AM EDT WED APR 20 2016 HIGH PRESSURE OVER THE REGION WILL SLOWLY SLIDE EASTWARD INTO THE ATLC BY TONIGHT. THIS "DIRTY" RIDGE HAS SOME HIGH CLOUDS ASSOCD WITH IT TO PRODUCE "FILTERED" SUNSHINE TODAY BUT STILL EXPECT MAX TEMPS TO REACH INTO THE LOWER 80S INLAND AND 70S ALONG THE COAST AS ATLC SEA BREEZE DEVELOPS THIS AFTERNOON AROUND 10 MPH AND PUSHES INLAND.
UPPER LEVEL LOW OVER THE PLAINS STATES WILL CONTINUE TO SLOWLY MOVE EASTWARD DURING THE NEAR TERM PERIOD.
1253 PM EDT WED APR 20 2016 HIGH PRESSURE WILL BUILD INTO THE AREA FROM THE NORTH THROUGH TONIGHT, THEN GRADUALLY MOVE OFFSHORE THURSDAY.
956 AM EDT WED APR 20 2016 A RIDGE OF HIGH PRESSURE WILL CREST OVER THE NORTH COUNTRY TODAY AND TONIGHT.
NO CHANGES PLANNED FOR THE HIGH TEMPERATURE FORECAST FOR THE TIME BEING. THIS IS THE LAST OF THE PRECIP ASSOCIATED WITH THE PERSISTENT UPPER LOW WHICH OPENS AND SHIFTS EAST WITH UPPER RIDGING TAKING OVER AND DRYING US OUT. NORTHWEST FLOW WILL FORCE CANADIAN HIGH PRESSURE ACROSS THE NORTHERN PLAINS AND WESTERN LAKES FOR THURSDAY. WHILE WARMER AIR DEVELOPS ACROSS THE FRONT RANGE.
AMPLE MOISTURE CONTINUES TO HOLD ACROSS THE REGION AS AN EXPANSIVE AREA OF LOW PRESSURE ADVANCES EAST ACROSS THE CENTRAL PLAINS. /ISSUED 505 AM CDT WED APR 20 2016/ ANOTHER WET MORNING ON TAP AS THE COMBINATION OF THE UPPER LEVEL LOW BACK TO THE NORTHWEST AND A FRONTAL BOUNDARY DRAPED OVER NORTH TEXAS HAS PRODUCED A SQUALL LINE THAT IS MOVING TOWARDS SOUTHEAST TEXAS.
A cold front will turn wind around to the n-ne at most sites by 12Z Thur, except FST. An upper level low is over the Great Plains/Upper Midwest with mostly westerly flow over the CWA. As the upper low/trough moves eastward, a cold front will push southward across West Texas tonight. Temperatures are expected to be slightly cooler on Thursday behind the front with a chance of thunderstorms across the Permian Basin and Lower Trans Pecos.
/TODAY/ UPPER LOW RESPONSIBLE FOR THE WEATHER THE PAST FEW DAYS TO CONTINUE TO MIGRATE EASTWARD INTO IOWA TODAY. AN ASSOCIATED WARM FRONTAL BOUNDARY WILL LIFT NORTHWARD THROUGH THE CWA. SO COULD SEE A STRONGER STORM OR TWO IN VICINITY OF THE WARM FRONT AND ALONG THE LEADING EDGE OF THE DRY SLOT.
Convection will again blossom over the High Plains but tend to spread more southeastward overnight keeping the heaviest precip southeast of the forecast area.
ON THE SOUTH SIDE OF THE SLOW MOVING UPPER LOW CURRENTLY OVER WRN NEB. AS THE MAIN UPPER LOW IN WRN NEB. AS THIS UPPER LOW MAKES SLOW PROGRESS EAST. AS THE NEXT IMPULSE ROUNDS THE BASE OF THE LOW AND DROPS EAST-SOUTHEAST. THU-SAT: TIMING OF THE REMNANTS OF THE UPPER LEVEL LOW WILL BE PROBLEMATIC FOR THU. EXPECT THE LOWS INFLUENCE TO END IN THE PLAINS. WITH MOST LOCATIONS SEEING SEASONAL TEMPS AND LOTS OF SUNSHINE RETURNING FOR THE END OF THE WEEK AS UPPER RIDGING MOVES OVER THE AREA FOR THU THROUGH SAT.
928 AM EDT WED APR 20 2016 HIGH PRESSURE WILL KEEP THE AREA DRY FOR ONE MORE DAY. LOW PRESSURE WILL TRACK FROM THE MIDWEST ACROSS THE CENTRAL LAKES AND TO ONTARIO CANADA.
744 AM EDT WED APR 20 2016 HIGH PRESSURE WILL CONTINUE TO KEEP QUIET WEATHER AND AN EASTERLY FLOW ACROSS SOUTH FLORIDA.
OVERNIGHT TONIGHT AND INTO EARLY THURSDAY MORNING A STRONG COLD FRONT WILL PUSH DOWN THE VALLEY WITH A LOW LEVEL CAA AND NORTH WINDS.
ISSUED BY NATIONAL WEATHER SERVICE BINGHAMTON NY 1005 AM EDT WED APR 20 2016 HIGH PRESSURE WILL CONTINUE TO BUILD OUT OF CANADA INTO THE NORTHEASTERN US.
BROAD HIGH PRESSURE EXTENDING FROM THE MID ATLC SEABOARD S TO FL WL BRING PLEASANT WEATHER CONDS TODAY WITH DEVELOPMENT ON AN ONSHORE BREEZE BY MIDDAY.
639 AM CDT WED APR 20 2016 THE DECENT RAIN PRODUCING UPPER LOW WILL COME UP PRETTY MUCH AS EARLIER EXPECTED TODAY. THIS IS EXPECTED TO HOLD INTO THE EARLY MORNING DESPITE INCREASING HIGHER CLOUDS AHEAD OF THE SYSTEM WITH THE LOWER LEVELS MORE OR LESS LOCKED IN. TEMPERATURES WILL REACH THE LOWER TO MIDDLE 60S NORTH OF INTERSTATE 90 TODAY BUT STAY IN THE 50S IN MUCH OF NORTHWEST IOWA WITH THE DEVELOPING RAIN. THE APPROACHING NORTHWESTERLY UPPER FLOW AND ASSOCIATED RIDGING WILL BRING CLEARING NORTH AND WEST OF FSD. THURSDAY WILL SEE LOW PRESSURE ALOFT SHIFTING SOUTHEAST OF THE AREA.
MAIN FEATURE OF INTEREST WILL BE A SHORT WAVE TROUGH MOVING NEWD THROUGH OREGON THIS AFTERNOON AND EVENING WITH A SLIGHT CHANCE OF THUNDERSTORMS IN HARNEY COUNTY AND WRN-MOST BAKER COUNTY.
AS THE RIDGE OF HIGH PRESSURE THAT HAS BROUGHT ABNORMAL WARMTH AND DRYNESS TO THE REGION FOR THE PAST WEEK WILL REMAIN IN PLACE FOR ANOTHER DAY. THE RIDGE WILL FINALLY BEGIN TO BREAK DOWN LATE IN THE DAY TODAY. AS A LARGE TROUGH OF LOW PRESSURE IS FINALLY ABLE TO MAKE AN EASTWARD PUSH OUT OF THE NORTH CENTRAL PLAINS. THE TROUGH AND ITS ASSOCIATED SURFACE FRONTS SHOULD FINALLY BEGIN TO INFLUENCE THE WEATHER OF EASTERN KENTUCKY LATE TONIGHT. AS A WEAK COLD FRONT APPROACHES FROM THE WEST. AS THE AFOREMENTIONED RIDGE ONLY BEGRUDGINGLY MOVES OFF TO THE EAST OF THE AREA. THE HIGHEST PROBABILITY OF RAIN IN THE SHORT TERM LOOKS TO BE THURSDAY AFTERNOON. IT WILL BE SLIGHTLY COOLER TOMORROW. IN THE LOW TO MID 70S. BUT A MUCH COOLER DAY THAN TODAY WILL BE IN STORE.
A LOW PRESSURE SYSTEM IS EXPECTED TO MOVE THROUGH THE GREAT LAKES REGION AROUND THURSDAY. HIGH PRESSURE WILL BUILD INTO THE AREA OVER THE WEEKEND. WILL GO WITH THE HIGHEST POPS ON WEDNESDAY NIGHT AND THURSDAY AS A RESULT. BUT MODEL DATA SUGGEST CONVECTIVE DEVELOPMENT POSSIBLE LATE THURSDAY AFTERNOON AND NIGHT WITH THE PASSAGE OF THE COLD FRONT.
745 AM EDT WED APR 20 2016 A RIDGE OF HIGH PRESSURE WILL CREST OVER THE NORTH COUNTRY TODAY AND TONIGHT.
DRY AND WARMER WEATHER WILL GRACE NORTHERN ARIZONA TODAY AND THURSDAY UNDER HIGH PRESSURE ALOFT.
Highs are expected to be in the low-mid 80s, similar to yesterday.
732 AM EDT WED APR 20 2016 HIGH PRESSURE WILL KEEP THE AREA DRY FOR ONE MORE DAY. LOW PRESSURE WILL TRACK FROM THE MIDWEST ACROSS THE CENTRAL LAKES AND TO ONTARIO CANADA.
Western Kansas will remain under the influence of the upper low across Nebraska.
1055 AM EDT WED APR 20 2016 WEAK HIGH PRESSURE TODAY. PRECIPITATION CHANCES INCREASE FOR SECOND HALF OF THE WEEK WITH AN UPPER LEVEL LOW/COLD FRONT. HIGH PRESSURE FOR THE WEEKEND. AS THE UPPER LOW PARKED OVER THE PLAINS STATES STILL WAITS FOR A KICKER. WITH FILTERED SUNSHINE THRU CIRRUS CLOUDS FLOWING OVER THE UPPER RIDGE STILL DOMINATING THE OHIO VALLEY. LOOK FOR HIGH TEMPERATURES RANGING FROM THE UPPER 70S FAR NORTH TO THE LOWER 80S SOUTH. INCREASING LOW LEVEL MOISTURE AND RELATIVELY LIGHT WINDS OUTSIDE OF SOME MOUNTAIN RIDGETOP GUSTS WILL KEEP CONDITIONS BELOW RED FLAG. LOW LEVEL FLOWS INCREASE MODESTLY BUT ERRATICALLY AS THE NORTHERN TROUGH AXIS WEAKENS AND LOWER MISSISSIPPI VALLEY UPPER LOW BECOMES THE DOMINANT SYSTEM.
1113 AM EDT WED APR 20 2016 HIGH PRESSURE BUILDS OVER THE AREA TODAY. THE HIGH MOVES OFF THE COAST THURSDAY.
UPPER LEVEL LOW HAS FINALLY MOVED OUT OF THE STATE. PERHAPS AIDED ALONG BY A WEAK SURGE IN THE LOW LEVEL PRESSURE/WIND FIELDS.
MID-LEVEL CLOSED LOW SPINS FARTHER TO OUR EAST-NORTHEAST ON THURSDAY WITH NORTHWEST FLOW ALOFT EXPECTED TO TAKE OVER.
ELONGATED H7 TROUGH THAT WILL CONTINUE TO MOVE NORTHWARD THIS MORNING. THE UPPER LEVEL LOW IN THE CENTRAL PLAINS WILL FINALLY OPEN UP AND LIFT INTO THE WESTERN GREAT LAKES TONIGHT AND THURSDAY. AS THE LOW LIFTS E/NE. THE HIGHEST TEMPS WILL BE IN THE SOUTHEAST ON THURSDAY. WITH COOLER AIR BEHIND THE COLD FRONT IN THE NORTH. NORTHWEST FLOW PATTERN TAKES HOLD FOR THE WEEKEND RESULTING IN COOLER TEMPS AND A CHANCE FOR RAIN.
THE RIDGE STILL LINGERS ACROSS MUCH OF THE EASTERN U. THE MOISTURE IN THE LOW AND MID LEVELS HAS IMPROVED SINCE YESTERDAY BUT ARE STILL DRY AND THERE IS NOT A LOT OF INSTABILITY.
1025 AM EDT WED APR 20 2016 HIGH PRESSURE WILL PROVIDE PLEASANT SPRING WEATHER THROUGH THURSDAY MORNING.
REMOVAL DUE TO NONE OF THE HI-RES MODELS SHOWING ANYTHING FOR THIS AFTERNOON AND BECAUSE SOUNDINGS KEEP DRY AIR IN THE LOWER LEVELS THROUGH THE REMAINDER OF THE DAY. ANOTHER CHANGE WAS TO BUMP WINDS UP ACROSS THE HIGHER ELEVATIONS. CHATTANOOGA AIRPORT, TN 83 59 77 61 / 10 10 30 60 KNOXVILLE MCGHEE TYSON AIRPORT, TN 82 58 78 58 / 10 10 20 60 OAK RIDGE, TN 82 58 77 59 / 10 10 30 60 TRI CITIES AIRPORT, TN 78 52 78 57 / 10 20 20 60.
WESTERN ATLANTIC HIGH PRESSURE CONTINUES WITH EASTERLY FLOW OVER THE COASTAL WATERS TODAY IN THE 10 KT RANGE WITH A FEW HIGHER GUSTS AT TIMES.
SUBJECTIVE 00Z UPPER AIR ANALYSIS INDICATES BROAD CLOSED UPPER LOW CENTERED IN WESTERN NEB. UPPER-LEVEL JET OF UP TO 85KT EXTENDED NORTHEASTWARD FROM THE BASE OF THE UPPER LOW. WITH WEAKENING HIGH PRESSURE IN CENTRAL/WESTERN NEB DRIFTING WESTWARD. AS MODELS ARE IN GOOD AGREEMENT THAT IN ADDITION TO THIS WAVE OF PRECIPITATION ON THE WARM SIDE OF THE LOW. THURSDAY IN WAKE OF THE LOW.
HIGH PRESSURE WILL RESULT IN WARM AND DRY CONDITIONS THROUGH THURSDAY.
DID GO AHEAD AND NUDGE HIGH TEMPS ACROSS THE WESTERN HALF OF THE CWA UP INTO THE LOW 70S FOR TODAY. NO CHANGES PLANNED FOR THE HIGH TEMPERATURE FORECAST FOR THE TIME BEING. THIS IS THE LAST OF THE PRECIP ASSOCIATED WITH THE PERSISTENT UPPER LOW WHICH OPENS AND SHIFTS EAST WITH UPPER RIDGING TAKING OVER AND DRYING US OUT. NORTHWEST FLOW WILL FORCE CANADIAN HIGH PRESSURE ACROSS THE NORTHERN PLAINS AND WESTERN LAKES FOR THURSDAY. WHILE WARMER AIR DEVELOPS ACROSS THE FRONT RANGE.