Aikyam-Lab/Synoptic-Bench huggingface dataset:
911 PM EDT Tue Oct 18 2016 Rain shower chances will increase this evening and overnight as a weak cold front crosses the area. That said, a decent moisture slug generally from 700 mb downward along with modest baroclinicity in the lower half of the troposphere should allow for the development and propagation of showers along the front as it translates southeastward through the night. Upper level forcing never does manage to sag southeastward overnight with this low-level boundary.
The unseasonably hot afternoon temperatures are the result of deep layer ridging parked across the region. Otherwise, clear skies with light or calm winds with lows in the lower 60s inland and mid to upper 60s along the coast.
After a rather 'toasty' afternoon for mid October, lows overnight should cool into the low/mid 60s. as a cold front approaches from the NW.
Mostly clear and cool night tonight as a high pressure ridge begins to build over the region.
A cold front continues to slowly slide southeast across North Dakota today. An upper level ridge moves in by the weekend. MVFR with localized IFR cigs are expected to prevail tonight over northern North Dakota in the wake of a slowly advancing cold front.
As the pacific high continue to build eastward on Wednesday, stronger nw winds will develop in the afternoon, in the teens with gusts to 20 mph, at least across the High Plains (west of 283).
Any accumulating snow should stay confined to the higher mtns.
936 PM EDT Tue Oct 18 2016 Secondary surface trof crossing Lake MI contributed to reasonably healthy late afternoon/early evening sprinkle/-shra coverage in northern MI. High pressure settling over the Great Lakes tonight. With a wet ground from recent rains and the cooler temperatures, will likely see some radiation fog develop overnight,and possibly some areas of stratus.
1141 PM EDT Tue Oct 18 2016 Secondary surface trof crossing Lake MI contributed to reasonably healthy late afternoon/early evening sprinkle/-shra coverage in northern MI. High pressure settling over the Great Lakes tonight. With a wet ground from recent rains and the cooler temperatures, will likely see some radiation fog develop overnight,and possibly some areas of stratus.
739 PM EDT Tue Oct 18 2016 High pressure settling over the Great Lakes tonight. With a wet ground from recent rains and the cooler temperatures, will likely see some radiation fog develop overnight,and possibly some areas of stratus.
Meanwhile we should see an increase of thunderstorm coverage during the day on Wednesday, as upper trough axis sharpens a bit and dynamics from entrance region of upper jet boosts overall vertical motion across the region.
648 PM CDT TUE OCT 18 2016 A cold front will continue to drift south over the forecast area this evening, with a band of lower clouds just ahead of it. Cooler air filtering in behind the boundary will result in overnight lows in the 50s north of the I-70 corridor. The cold front moving through central Illinois early this afternoon is expected to slow down as it becomes parallel to the upper level flow near the Ohio River Valley later tonight.
More great weather for flight expected this forecast period as the protective ridge remains in place for yet another day, holding a frontal boundary just to the northwest of the region over the Ohio Valley.
although the lower cigs will be slower to lift across the remaining terminals until late morning. Heating is still possible as the clouds continue to thin quickly in the warmer dome overhead.
Temperatures behind the front have warmed into the low 80s, with low to mid 90s ahead of the front. Overnight lows will mainly be in the low to mid 60s. A cold front will move into north Texas Wednesday afternoon and approach the northern Big Country by early evening.
Ridge will remain across the southern Appalachians overnight. Chattanooga Airport, TN 63 88 65 85 / 0 10 10 40 Knoxville McGhee Tyson Airport, TN 63 88 63 85 / 0 0 10 30 Oak Ridge, TN 62 87 63 84 / 0 10 10 40 Tri Cities Airport, TN 55 84 59 81 / 0 10 10 20.
Increased southerly flow in the lower levels will allow moisture from the Gulf to continue to advect in the lower levels tonight. This will result in some low clouds and warmer than average overnight lows.
Tonight and Wednesday Skies cleared as a cold front to the southeast continued to move away from the forecast area.
A cold front located just north of KHVR could move over the terminal, so have added possible fog for a few hours early Wednesday morning.
Strong darkening in the water vapor over central NV/UT is also an indication of the strong jet moving around the base of the trough. This jet is helping drop the dynamic trop lower in the atmosphere which is aiding instability but moisture is not being drawn in ahead of the trough. Looking at webcams there are some showers over the Uintas but the rain is struggling to reach the lower elevations attm.
A strong cold front will move into the KABI area after 7 PM tomorrow evening. Temperatures behind the front have warmed into the low 80s, with low to mid 90s ahead of the front. Overnight lows will mainly be in the low to mid 60s. A cold front will move into north Texas Wednesday afternoon and approach the northern Big Country by early evening.
For tonight, relatively calm winds and partly cloudy skies will allow temperatures to fall into the middle to upper 30s in our eastern Colorado counties and the lower 40s elsewhere. Highs on Wednesday will reach the lower 60s, which is about where our seasonal average is for this time of year.
917 PM MDT Tue Oct 18 2016 A cold front appears to have moved through Greeley and Longmont and will make its way into Denver around 04z. Upper trough moving across srn WY/nrn CO overnight. Models have the upper trough push across the CWA by Wednesday morning. The plains will have very little moisture in the lower levels. Strong ridging over the western U.
In addition to increased high cloud from upper wave's approach, expect Wednesday highs to be a bit lower than today Wednesday night, an upper level trough will dig east southeast across central NE and western KS across northeast KS and northern MO. AS the upper trough shifts east-southeast and amplifies across the mid and lower MS valley, the widely scattered showers will move east and southeast of the CWA just after sunrise.
801 PM EDT TUE OCT 18 2016 High pressure at the surface and ridging aloft will keep conditions warm and dry for the next few days. A cold front will approach from the west towards the end of the week. High pressure and very light southwest flow to keep things marginally mixed tonight. Tomorrow will likely be the warmest day of the week as high pressure continues to dominate the surface pattern with sunny skies. Low temperatures in the low 60s.
High pressure will return for the latter half of the week. A low-amplitude trough continues to slide east into Wyoming and northwest Colorado this evening. The associated cold front has already moved into far southern Utah. Otherwise, expect slightly cooler temperatures across the area tonight behind the cold front. High pressure will then build into the Great Basin tomorrow through the end of the week.
1201 AM EDT Wed Oct 19 2016 Aviation Breezy conditions will subside this afternoon as cooler, drier air replaces the unseasonably warm, humid airmass.
754 PM EDT Tue Oct 18 2016 A weak and dry cold front pushes south through the region Wednesday afternoon - still record warmth for Wednesday.
The jet continues to be active from Oregon through the Rockies long wave trough into the Great Lakes. The NV short wave currently in the base of the western CONUS trough will be slow to evolve only reaching the Plains by Wednesday.
Late in the day Wednesday a cold front will advance southward from the Texas Panhandle. /issued 254 PM CDT TUE OCT 18 2016/ Upper level trough will pass to our north on Wednesday as flow in West Texas remains more or less zonally oriented. Low level theta-e will continue to be relatively high for this area leading up to and through the evening until the cold front plows through.
Issued at 907 CDT Tue Oct 18 2016 Large upper high over the sern US will keep a cdfnt now across the midwest from moving to far south overnight. as a cold front approaches from the NW.
VFR conditions will prevail areawide today as southerly winds over the region become northwest to north this afternoon ahead and behind a cold front respectively.
718 PM EDT Tue Oct 18 2016 A cold front across SE Lower Michigan will move across the forecast area tonight then stall near the Ohio river tomorrow.
Most exciting thing happening during the short term is a weak cold front currently up across central NODAK into northern MN will work across the area tonight, exiting off to our southeast Wednesday morning. The passage of the cold front tonight will continue to chip away at temperatures/dewpoints, with h85 temps dropping from around +6C today to around +2C tomorrow.
high pressure will briefly move in Wednesday, giving us a dry day with light winds.
907 PM CDT Tue Oct 18 2016 Issued at 907 CDT Tue Oct 18 2016 Large upper high over the sern US will keep a cdfnt now across the midwest from moving to far south overnight. as a cold front approaches from the NW.
932 PM EDT Tue Oct 18 2016 A cold front across SE Lower Michigan will move across the forecast area tonight then stall near the Ohio river tomorrow.
Most of the high resolution short range models currently have this band too far to the northwest. A cold front is pushing southeast across the Midwest and should reach the Ohio River by about dawn on Wednesday.
Late in the week a cold front will sweep across the waters shifting winds to northwest and then northerly, with decreasing winds and cooler conditions this weekend.
Elongated broad high pressure aloft extends across the Southern Plains to Mid Atlantic at 500 hPa and across the Pacific offshore near far southern CA to northern Mexico at the beginning of the period. Elsewhere, broad low amplitude westerly flow is present across the Western CONUS to Central Rockies to the Lower Great Lakes. The trough then continues to advance eastward across the Central Plains tomorrow. Overall, the pattern aloft becomes more amplified with a ridge building across the Intermountain West into the Northern Rockies Wednesday. The combination of a weak surface cold front advancing southward tomorrow, showers, and ample sky cover will result in tomorrow being one of the cooler days this work week.
Update The upper trough continues to dominate the weather pattern keep cloudy and cool weather in place through the overnight hours. Proton Previous Discussion Upper pattern still shows a broad trough over the Western states with a disturbance moving through the Northern Rockies.
The jet continues to be active from Oregon through the Rockies long wave trough into the Great Lakes. The NV short wave currently in the base of the western CONUS trough will be slow to evolve only reaching the Plains by Wednesday. An upper level trough of low pressure will approach the state by late in the period which will increase mid and high level clouds but there appears to be a lot of dry air to overcome so any precip chances look to be minimal and more on the order of sprinkles far West towards 00Z.
A weak upper level ridge will bring a short dry period through Wednesday morning.
Temperatures ranged from the lower 50s in the north to the mid 60s in the south. A brush with cooler air late this week then warming to slightly above normal temperatures this weekend.
MVFR ceilings may return to some sites Wednesday evening behind a cold front. /Issued 340 PM CDT Tue Oct 18 2016/ A cold front was positioned from Southwest Texas through East Central Oklahoma and Northwest Arkansas and extended northeast through the Midwest and the Great Lakes Region this afternoon. This evening the cold front looks to drift a bit further southeast into Southeast Oklahoma and Northwest Arkansas before retreating back northwestward into Northeast Oklahoma late tonight. an increasing 20-40KT LLJ along the front over an expanding area of warm advection will allow for a slight chance of showers and thunderstorms mainly within the higher terrain locations of far Northwest Arkansas into far Northeast Oklahoma.
Despite a cold front slicing through the region, temperatures ranged from the lower 70s to the lower 80s. This frontal system will stall out near the Arkansas and Missouri state line tonight, and eventually push back north as a warm front early Wednesday morning.
1038 PM EDT Tue Oct 18 2016 A weak and dry cold front pushes south through the region Wednesday afternoon - still record warmth for Wednesday.
340 AM EDT SUN MAY 1 2016 MID-LVL Q-VECT CONV AND COLUMN MOISTENING ON PERIPHERY OF LOW PRESSURE SYSTEM SLIDING E THROUGH THE MIDWEST ALONG WITH MODERATE 700-600 MB FGEN IN RESPONSE TO COUPLED UPPER JET STRUCTURE OVER AREA HAS SUPPORTED SOME SCT -SHRA OVER NE WI EARLY THIS MORNING. MID-HIGH CLOUDS ON PERIPHERY OF LOW PRESSURE OVER THE MIDWEST WILL GRADUALLY THIN LATER THIS MORNING INTO THE AFTERNOON. HIGH PRESSURE BUILDING IN FM NW OF LAKE SUPERIOR WILL RESULT IN MOSTLY CLEAR SKIES AND LIGHT WINDS TONIGHT WITH MIN TEMPS RANGING FROM THE UPPER 20S TO AROUND 30F OVER THE INTERIOR. TO THE LOWER TO MID 30S NEAR THE GREAT LAKES. A DECAYING MID-LEVEL RIDGE TRACKING SE ACROSS THE CWA ON MONDAY WILL LEAD TO WIDESPREAD LAKE BREEZE DEVELOPMENT ALONG WITH DIURNAL CUMULUS INLAND.
AN UPPER LEVEL RIDGE WILL BUILD OVER THE PACIFIC NORTHWEST AND SOUTHWEST CANADA TODAY. THIS RIDGE WILL REMAIN OVER THE REGION THROUGH MONDAY, THOUGH THE RIDGE AXIS WILL BEGIN TO SHIFT EAST MONDAY. THIS HEATING WILL CAUSE SOME WEAK SURFACE BASED INSTABILITY THAT WILL CAUSE AFTERNOON AND EARLY EVENING CONVECTIVE CLOUDS OVER THE HIGHER TERRAIN. WITH THE RIDGE AXIS SHIFTING EAST MONDAY INTO MONDAY NIGHT, WILL START TO SEE THE DEVELOPMENT OF A MOIST SOUTHERLY FLOW OVER OUR WESTERN MOST ZONES. HIGH TEMPS WILL BE A FEW DEGREES WARMER.
HIGH PRESSURE ALOFT WILL PREVAIL OVER THE AREA THROUGH MONDAY.
BY MONDAY NIGHT RAIN CHANCES WILL BE NEGLIGIBLE AND HIGH PRESSURE WILL BEGIN TO BUILD INTO THE REGION.
THE COLD FRONT IS EXPECTED TO REMAIN ACROSS THE COASTAL PLAINS THIS EVENING. THEN BEGIN LIFTING NORTHWARD AS A WARM FRONT OVERNIGHT. GIVEN THE HIGHER MOISTURE LEVELS NEAR THE COAST. ESPECIALLY ALONG THE RIO GRANDE PLAINS GIVEN STRONG SOUTHEASTERLY FLOW IN THE LOW-LEVELS.
COUPLED WITH TEMPERATURES CLIMBING INTO THE LOW 80S FOR MANY TODAY AND INCREASING SHEAR VALUES THIS AFTERNOON. AS A COLD FRONT STARTS TO SLOWLY WORK ITS WAY INTO THE MID- STATE LATE TONIGHT. THE COLD FRONT GETS HUNG UP FOR SEVERAL HOURS ACROSS THE MID-STATE ON MONDAY.
349 AM CDT SUN MAY 1 2016 The cold front that was hanging around the area yesterday will get a good push south as high pressure builds into eastern New Mexico and West Texas this morning. The strong cold air advection will be aided by increasing clouds to give much cooler highs today than we have seen in quite a while. Models have been trending lighter with QPF amounts on rainfall today likely due to the upper low producing the rain weakening as it moves northeast into the plains later today.
Breezy day across the region as last night's weather system moves into Arizona and high pressure builds along the West Coast. Temperatures are a mixed bag today with mountain areas generally cooler than 24 hours ago with readings in the 40s and 50s (continuing cold advection in the mid- levels) while the Central Valley is running about 4-8 degrees warmer with temps in the upper 70s and lower 80s under sunshine and some compressional warming. Eastern Pacific ridge develops into blocking high over the northern Rockies on Sunday allowing some portion of the SW low to retrograde back into NorCal from the east. Valley high temperatures will be mainly in the low to mid 80s.
THE UPPER LOW MAKES LITTLE EASTWARD MOVEMENT THROUGH THE NIGHT BUT SLIDES SLOWLY EAST TOWARDS SUNDAY MORNING. THE HIGHER TOTALS ARE NORTH OF INTERSTATE 80. PRECIPITATION WILL SLOWLY SLIDE EASTWARD AS THE LOW MOVES EAST SUNDAY ENDING DURING THE DAY. BUT SLIGHTLY WARMER THAN TODAY. HIGHS IN THE LOW 50S EXPECTED.
211 AM PDT SUN MAY 1 2016 High pressure builds Today and Monday, resulting in a warming trend, with temperatures climbing into the mid 70s to low 80s.
The highest PoPs overnight will be across Crockett County/Interstate 10 corridor, with PoPs decreasing as you head north into the Big Country. System pushes out of the area, with an upper level ridge building into the area for the middle and end of the week.
THE NORTHLAND WAS BETWEEN AN AREA OF LOW PRESSURE IN THE CENTRAL US. AND HIGH PRESSURE CENTERED OVER MANITOBA AND FAR NW ONTARIO. TEMPERATURES RANGED FROM THE UPPER 40S NEAR LAKE SUPERIOR TO THE LOW TO MIDDLE 50S WELL INLAND. THE LOW PRESSURE WILL SHIFT EAST TO SOUTH OF THE GREAT LAKES TONIGHT AND SUNDAY. WHILE THE HIGH PRESSURE IN CANADA WILL BEGIN TO APPROACH THE NORTHLAND FROM THE NORTH. AN AREA OF HIGH PRESSURE WILL SETTLE OVER WESTERN LAKE SUPERIOR. TEMPERATURES SHOULD RANGE FROM THE LOW 50S NEAR LAKE SUPERIOR TO THE UPPER 50S AND LOW 60S WELL INLAND.
PROBABLY MEANDERING NORTHWEST/SOUTHEAST OF THE HIGHWAY 59 CORRIDOR INTO LATE EVENING. PRECIP WILL THEN TAPER OF AND WE'LL HEAD INTO A MUCH NEEDED DRYING TREND AS UPPER RIDGE BUILDS INTO THE REGION DURING THE MID AND LATE WEEK TIME PERIOD. 47 GENERALLY LIGHT TO MODERATE ONSHORE WINDS TO PREVAIL TODAY WITH THE COLD FRONT LINGERING OVER INLAND AREAS OF SE TX.
THE UPPER LOW OVER ARIZONA IS EXPECTED TO OPEN INTO A WAVE AS IT LIFTS NORTHEAST INTO THE SOUTHERN HIGH PLAINS TONIGHT. FOCUS WILL SHIFT TO THE WEST TONIGHT AS HIGH PRESSURE SURGING SOUTH THROUGH WEST TEXAS WILL PUSH A FRONTAL BOUNDARY INTO AREA TONIGHT. AIR MASS WILL BE UNSTABLE AHEAD OF THE FRONT AND SOME OF THE HI-RES MODELS DEPICT STRONG CONVECTION DEVELOPING OVER THE HIGHER TERRAIN IN MEXICO AND MOVING SOUTHEAST WITH THE FRONT. SO WILL CONTINUE THE HIGH RISK FOR RIP CURRENTS TODAY.
323 AM EDT SUN MAY 1 2016 A WARM FRONT WILL LIFT NORTH ACROSS THE AREA THIS MORNING. A COLD FRONT STALLS OVER THE AREA MONDAY.
Next closed cyclone to affect SW KS weather looks quite healthy on IR satellite imagery across Arizona this morning, with ongoing convection SW of the Four Corners. With 850 mb temperatures holding near a chilly +2C, and limited insolation, afternoon tempeatures will struggle into the lower 50s, with some SW locales holding in the upper 40s.
523 AM EDT SUN MAY 1 2016 LOW PRESSURE CENTERED OVER MISSOURI WAS BRINGING WARM AIR ADVECTION/ISENTROPIC LIFT TO OUR AREA DURING THE NIGHT AS A DIFFUSE WARM FRONT PASSES NORTH AND EAST. THE WARM FRONT WILL BECOME BETTER DEFINED AS IT MOVES TO OUR NORTH AND EAST TODAY. THE LOW CENTER WILL MOVE EAST ACROSS OH AND INTO PA TONIGHT. SENDING A COLD FRONT SOUTHEAST INTO KY. IT WILL STALL AND ANOTHER LOW PRESSURE WAVE RIPPLING NORTHEAST ALONG THE FRONT WILL BRING A POTENTIAL FOR MORE SHOWERS/STORMS ON MONDAY. WITH MUCH COOLER WEATHER ANTICIPATED HEADING THROUGH THE FIRST WEEK OF MAY.
EXPECT THE MVFR CEILINGS WILL MOVE INLAND WITH THE LOW LEVEL EASTERLY FLOW AND REACH LRD AROUND 09Z.
AND COMBINED WITH THE CLEAR SKIES AND RELATIVELY LOW DEWPOINTS IN THE LOW/MID 30S.
1203 AM CDT SUN MAY 1 2016 SLOW-MOVING UPPER LOW OVER MID-AMERICA WILL SUPPORT MOSTLY CLOUDY SKIES AND BELOW NORMAL TEMPERATURES THE NEXT FEW DAYS. OPERATIONAL MODELS AND ASSOCIATED GFS ENSEMBLES CONTINUE TO SUPPORT A HIGH AMPLITUDE WESTERN CONUS TROUGH MATERIALIZING THROUGH THE WEEK.
A broad northeast to southwest oriented upper-level trof stretches across the lower 48 states, with several smaller scale upper lows embedded within it. The feature we need to key in on today is the upper low spinning over the central Plains. There is currently very little on radar upstream, and expect the bulk of our precipitation will occur through a combination of diurnal heating and mid-level cooling with the approach of the upper low remnants. Persistent upper troughing pattern expected over the eastern U. much of the upcoming week, as a significant ridge builds west of the Rockies.
Warmer temperatures will hold on over our eastern counties today before drier/cooler winds veer more to the nw-nnw tonight. A blocking pattern will remain established with a high amplitude ridge over western NOAM. Then after a brief cool down again Thu, temperatures should warm nicely for the end of the week as the western upper level ridge axis moves into the Plains.
615 AM EDT SUN MAY 1 2016 A MOIST SOUTHERLY FLOW WILL CONTINUE INTO THE FORECAST AREA THROUGH MONDAY AHEAD OF A SLOW MOVING COLD FRONT.
AN UPPER RIDGE WILL MOVE INLAND ACROSS THE PACIFIC NORTHWEST AND NORTHERN ROCKIES TODAY AND MONDAY. WITH AN UPPER HIGH BECOMING CENTERED JUST ACROSS THE CANADIAN BORDER. A TROUGH CURRENTLY OVER THE SOUTHWEST STATES WILL GRADUALLY WEAKEN.
153 AM EDT SUN MAY 1 2016 A COUPLE OF LOW PRESSURE SYSTEMS WILL PROVIDE RAIN OVER THE REGION INTO EARLY MONDAY. A DIGGING UPPER LEVEL TROUGH OVER THE NORTHEAST WILL HELP SUPPORT A LOW PRESSURE SYSTEM ALONG THE EAST COAST.
429 AM CDT SUN MAY 1 2016 UPPER LEVEL LOW TO OUR NORTHEAST IS SPINNING OVER NORTHERN KANSAS WHILE ANOTHER UPPER LEVEL LOW IS NEARLY STATIONARY OVER ARIZONA. THIS SHALLOW LAYER OF COLDER AIR COMBINED WITH THE ASCENT FROM THE APPROACHING UPPER LEVEL LOW SHOULD BE ENOUGH FOR SCATTERED SHOWERS TO FORM ACROSS THE AREA AGAIN LATER THIS MORNING AND INTO THE AFTERNOON. OVERALL FORCING WILL WEAKEN AS THE UPPER LOW DISSOLVES OVER NEW MEXICO AND HAVE ENDED MOST POPS LATE TONIGHT AND A SHIFT TO PERHAPS SOME LINGERING DRIZZLE EARLY MONDAY MORNING AS THE LOWEST LAYERS STILL LOOK FAIRLY SATURATED. GUIDANCE AGAIN SUGGESTS NEAR FREEZING TEMPERATURES COULD AGAIN BE POSSIBLE IN THE FAR NORTHWEST.
THE UPPER LOW WILL SLOWLY MIGRATE ACROSS THE STATE TODAY. AHEAD OF THE LOW WE WILL CONTINUE TO DEAL WITH STRATUS AND FOG ALONG WITH A COLD DRIZZLE. BANDS OF PRECIP ACROSS NORTHERN IOWA AND TO THE WEST WILL WRAP AROUND THE LOW AND BRING SHOWERS. AS THE UPPER LOW MOVES BY.
337 AM EDT SUN MAY 1 2016 A WARM FRONT WILL LIFT NORTH OF THE AREA INTO DAYBREAK.
442 AM CDT SUN MAY 1 2016 COMPLEX UPPER TROUGH EXTENDING FROM FOUR-CORNERS REGION INTO CENTRAL PLAINS PROGD TO SHEAR OUT AND MOVE PROGRESSIVELY OVER AND NORTH OF OKLAHOMA THROUGH TONIGHT AND EARLY MONDAY. SCATTERED SHOWERS WILL BE EXPECTED MAINLY ACROSS WESTERN AND NORTHERN OKLAHOMA CLOSER TO TROUGH AXIS.
TRAILING BROADER NORTHERN STREAM TROUGH WILL FILL IN BEHIND THIS SYSTEM FOR MONDAY. RESIDUAL LOW LEVEL THERMAL TROUGHING UNDER NORTHEAST LOW LEVEL FLOW SUGGESTS THE CLEARING TREND WILL BE SLOW PROCESS. A NEUTRAL TO SLIGHTLY COOLER TEMPERATURE PROFILE ONCE AGAIN WILL TRANSLATE INTO BELOW NORMAL HIGHS. BUT MORE UNIFORMLY IN THE VICINITY OF 60 DEGREES /OUTSIDE OF THE TYPICALLY COOLER NEARSHORE LOCALES GIVEN THE ONSHORE FLOW/.
402 AM EDT SUN MAY 1 2016 A COUPLE OF LOW PRESSURE SYSTEMS WILL PROVIDE RAIN OVER THE REGION INTO EARLY MONDAY. A DIGGING UPPER LEVEL TROUGH OVER THE NORTHEAST WILL HELP SUPPORT A LOW PRESSURE SYSTEM ALONG THE EAST COAST.
UPPER RIDGING AND DRIER AIR WILL BUILD OVER THE AREA TODAY. UPPER LEVEL HIGH PRESSURE CONTINUES TO STRENGTHEN OVER THE AREA TONIGHT AS VORTICITY DROPS S OUT OF CANADA INTO THE NORTHERN PLAINS. UPPER LEVEL RIDGING REMAINS IN CONTROL FOR MON AND MODEL CONSENSUS BRINGS THE VORTICITY INTO SD/NE. DRY CONDITIONS CONTINUE MON NIGHT UNDER THE RIDGE.
CLEARING TREND WILL CONTINUE OVERNIGHT AS HIGH PRESSURE RIDGING AND DRIER AIR BEGIN TO SETTLE IN EAST OF THE DIVIDE FOR TOMORROW. SKIES WILL CLEAR FROM EAST TO WEST OVERNIGHT AS HIGH PRESSURE RIDGING BUILDS INTO WESTERN CANADA NORTH OF THE CLOSED UPPER LOW OVER THE CENTRAL ROCKIES FOR PREDOMINATELY EASTERLY FLOW. HIGH PRESSURE ALOFT PREVAILS FOR THE REMAINDER OF THE SHORT TERM PERIOD FOR MOSTLY CLEAR SKIES THROUGH MONDAY.
HIGH PRESSURE WILL REMAIN IN CONTROL OVER THE FORECAST AREA TODAY WITH SUNNY SKIES AND LIGHT WINDS. /CANADA UPPER LEVEL RIDGE. WITH COOLER TEMPERATURES ALOFT PROVIDING SUPPORT FOR ISOLATED SHOWERS DROPPING SOUTH ACROSS CENTRAL NORTH DAKOTA DURING THE DAY.
A TRAILING INVERTED TROUGH COMBINED WITH SOME 700 HPA FRONTOGENESIS WILL BRING A BETTER CHANCE FOR ONE LAST ROUND OF SHOWERS ACROSS THE SOUTHERN TIER COUNTIES. EXPECT TEMPERATURES TO RISE INTO THE LOWER TO MID 60S WITH LIGHT NORTHERLY WINDS.