Aikyam-Lab/Synoptic-Bench huggingface dataset:
Thereafter, our region will lie between a large area of low pressure well east of the Bahamas and an extended ridge of high pressure covering the entire eastern United States including the Sunshine State. During the next several days, this area of high pressure will build into the southwest Atlantic ocean resulting in a strengthening easterly flow beginning Friday night.
Convection may linger into this evening across the eastern portions before the upper trough moves away from the forecast area and subsidence prevails behind the exiting upper trough.
Will carry small thunderstorm chances this afternoon with the greater chances west of Highway 75 in Northeast Oklahoma this evening and overnight tonight as precip on the southeast periphery of the wave pushes north northeast around the low. These conditions combined with warmer temperatures will help to increase fire danger concerns over the region.
This is all occurring ahead of an approaching cold front that will sweep across the forecast area late overnight and exit Thursday morning. Precipitation will decrease west to east behind the cold front with some increase of westerly winds. A cooler unstable airmass will move in behind the cold front which will lead to instability showers Thursday afternoon with the possibility of some thunderstorms producing small hail. Mainly VFR conditions will continue through Thursday with several rounds of showers moving through as a low pressure area drifts north along the Washington/Oregon coast. A low pressure system over the e pac will continue to pump moisture into the two state area overnight. The bulk of the moisture should drift away of the region and a weak ridge of high pressure should build into the two state area Friday night.
High pressure moving into the Northeast States will ridge southward and into the forecast area Friday.
The highest chances and heaviest amounts are expected in western parts of the fa today.
Today Through Friday Night An upper ridge is over the Plains this morning with an upper low pressure system near the Pacific Northwest. This low will not move much today or tonight as it will be blocked by the upper ridge to the east. An upper low will develop over the high Plains this afternoon and move northeast through the Plains through Friday. High pressure will remain over the southeast U. A cold front in Nebraska and Iowa this morning will become stationary. then move north on Friday as a warm front.
641 AM EDT Thu Apr 13 2017 A back-door cold front will settle south through the region this morning. Cooler high pressure will follow for the end of the week. Much warmer temperatures will arrive for the weekend as high pressure drifts offshore. The surface cold front will stall/dissipate just to the south of the area this morning. The will result in a continuation of dry weather with high temps generally in the mid to upper 70s and low temps in the lower to mid 50s.
Otherwise, weak upper level ridging will bring dry and warm conditions to the region today. As a low pressure system develops west of the region, western and north-central South Dakota will see increasing winds which will create fire weather concerns.
Low pressure will bring rain and above average temperature for the weekend. Expect passing clouds from time to time, but with warmer air filling in underneath strengthening ridge, temperatures will once again be above normal.
More clouds today should result in slightly cooler temps compared to yesterday, with 60+ degrees returning on Friday. 5 inches) will slide into the Western Great Lakes Friday Night, there does look to be sufficient moisture transport and instability (showalter slightly negative) extending into southern Lower Michigan to generate showers and possible thunderstorms as warm front lifts north.
Thursday will shape up to be a mild day across the region, with upper level ridging rebounding across the northern Plains. Upper level ridge continues to edge further east into the Missouri Valley on Friday, leaving more active northwest flow across the high Plains.
127 AM EDT Thu Apr 13 2017 High pressure dominates through Thursday.
An upper low was noted off the Pacific northwest coast. At the surface, an inverted trough of low pressure extended from southeast CO into the mid MO river valley. The interesting thing is models don't really generate any precip until the core of the upper low lifts over late tonight in spite of a conditionally unstable airmass with little or no inhibition progged by the models. Upper trough axis shifts east towards east Friday morning, setting up a decent band of showers and thunderstorms across east central Kansas.
249 AM EDT Thu Apr 13 2017 Although high pressure is building to the north, the weather pattern looks to continue to be somewhat active through the forecast period. Mainly, the flow around the high will bring a slight chance to a chance of showers every couple of days.
High pressure over the OH Valley continues to keep winds out of the north this evening. Some additional drier air will filter into the area tonight, as dewpoints upstream are in the low to mid 40s. With weak upper ridging also building ewd into the wrn/cntrl Gulf states, this should also translate into an unseasonably warm pattern persisting thru Fri, with afternoon highs climbing into the lower/mid 80s for many areas.
141 AM EDT Thu Apr 13 2017 A back-door cold front will settle south through the region this morning. Cooler high pressure will follow for the end of the week. This scattered convection a result of weak convergence along a slow moving sfc cold front with additional lift provided by a shear axis crossing overhead. Hourly temperatures have been trending slightly warmer than forecast, and have adjusted to reflect this trend. Highs Thursday will be cooler, with highs around 70 northeast ranging to mainly mid 70s elsewhere except for possibly some upper 70s near the South Carolina border.
This would cause a SE-moving cold front that has entered Southeast Nebraska & Northwest KS to stall. With the N/S-oriented lower-deck trof axis remaining across the Wrn Plains increasing moisture would be afforded extra time to continue spreading north across KS. A 3rd and somewhat stronger mid-upper trof rounding the base of a mid-upper cyclone drifting east across Srn Canada should be strong enough to force a SE-moving cold front into Central KS Sat Afternoon then into Southeast KS late Sat Night. However, this 3rd upper-deck wave will begin to shear as it encounters a STRONG mid- upper high centered over Sern U. As such this cold front would also decelerate & eventually stall as it crosses the KS/OK border on Sun.
Locations seeing clouds have temps in the lower to mid 50s. Have trended NW sections warmest today near the low 70s. a secondary trough/dry line sets up along the Front Range on Friday. clearing the CWA as nightfall progresses with high pressure building over the region. strong WAA ahead of the trough/dryline will allow temps to reach a range from the upper 70s to the mid 80s.
The low ceilings and fog will gradually thin and dissipate by mid-morning Thursday. The low ceilings and fog will gradually thin and dissipate by mid-morning Thursday.
137 AM EDT Thu Apr 13 2017 High pressure over the lower lakes will lift NE allowing a warm front to lift across the forecast area Friday.
309 AM CDT Thu Apr 13 2017 High pressure shifting eastward across the upper Ohio river valley allows a return fetch of lower trop southerlies to establish, underneath a ridging upper High that firms up across the lower Mississippi valley. And as the aforementioned upper High shifts eastward across the Tennessee valley with time, we'll see a moistening profile as well, topping said ridge, with chance category/scattered Pops affecting ptns of the FA Friday.
Warming trend underway as stg upper ridge over se TX drifts over area and moves east to AL area by Friday eve. Highs into the lower to mid 80s for much of area from today into the wknd. Deepening southerly flow around backside of upper ridge may induce an increased sea breeze activity beginning Sat aftn.
Dewpoint depressions were narrow in spots with the light winds and lessening cloud cover with the higher clouds. an h5 trough over New Mexico and Colorado will slowly lift northeastward Thursday and Friday.
Weak southern stream upper troughs were located over Georgia and West Texas separated by weak ridging. Temperatures are considerably cooler in some locations this morning with 2 AM readings away from marine influences anywhere from the mid 50s to mid 60s. With surface and upper ridging over the area today, dry weather expected.
This low is forecast to open into a trough and move slowly east into the Atlantic on Friday. Meanwhile, a mid to upper-level ridge over the western Gulf will move into the eastern Gulf bringing a return to strong subsidence and very dry air aloft. At the surface, a large high pressure area centered over the Great Lakes this morning will gradually build southeastward toward New England and the mid-Atlantic states by Friday.
The cold front passes into the forecast area around 1800 MDT, and exits the state at the WY border close to midnight tonight. Everybody will be below freezing on Fri night as skies clear, with the exception of a threat of fog or stratus, depending on how much moisture is actually left behind.
Thermal ridge axis will be over the fa and depending on the amount of cloud cover could be the warmest day of the week.
If there are some, temperatures should warm to around 55 with cooler temperatures further south. High pressure to the northeast and weak upper ridging could result in some clearing in the north this evening, though clouds would likely return late. Good Friday should have good weather through the afternoon hours, but then showers and thunderstorms are possible by dusk as a warm front approaches.
A cold front will spread rain across the North Bay this evening and elsewhere later tonight.
340 AM EDT Thu Apr 13 2017 A back-door cold front will settle south through the region this morning. Cooler high pressure will follow for the end of the week. Much warmer temperatures will arrive for the weekend as high pressure drifts offshore. The surface cold front will stall/dissipate just to the south of the area this morning. The will result in a continuation of dry weather with high temps generally in the mid to upper 70s and low temps in the lower to mid 50s.
245 AM EDT Thu Apr 13 2017 A back-door cold front will settle south through the region this morning. Cooler high pressure will follow for the end of the week. Much warmer temperatures will arrive for the weekend as high pressure drifts offshore. This scattered convection a result of weak convergence along a slow moving sfc cold front with additional lift provided by a shear axis crossing overhead. Hourly temperatures have been trending slightly warmer than forecast, and have adjusted to reflect this trend. Highs Thursday will be cooler, with highs around 70 northeast ranging to mainly mid 70s elsewhere except for possibly some upper 70s near the South Carolina border.
The upper level trough that produced the heavy rainfall across the area is overhead early this morning. Some showers and thunderstorms could redevelop today across the northern and eastern sections of the Permian Basin closest to the departing upper level trough in the cooler air aloft. Further west across the Guadalupe and Davis Mountains, destabilization is expected this afternoon as upslope flow combines with heating of the higher terrain to produce mainly isolated to widely scattered thunderstorms.
458 AM EDT Thu Apr 13 2017 High pressure dominates through Thursday.
330 AM EDT Thu Apr 13 2017 High pressure across the Great Lakes region this morning will build across the Middle Atlantic region today and tonight before shifting offshore later Friday.
As the upper ridge shifts eastward, the upper disturbance will continue its advance northeastward toward northern TX/OK through the daytime hours of Thursday. Ample moisture due to southeasterly winds advecting moisture from the Gulf, weak dynamics from the base of the lifting upper ridge, as well as sufficient instability, will yield the chance for isolated to scattered thunderstorms across much of the region today.
A weak trough will pass through the northern Rockies today through Friday. Today the winds will be strongest, combining with very low RH, thus the Red Flag Warning continues over the lower elevations of west-central CO this afternoon to just after sunset.
Few clouds Fri afternoon should also lead to slightly warmer max temps.
311 AM CDT Thu Apr 13 2017 A ridge of high pressure was slowly building across the TN Valley early this morning, with mostly clear skies persisting. At the surface, high pressure was moving east across the Great Lakes and winds were generally light and out of the northeast. Therefore, expect temperatures to drop a few more degrees, with lows bottoming out in the lower 50s by daybreak. Today should be a fairly nice day across the region as the upper ridge continues to shift eastward. Under mostly sunny skies and the rising heights, temperatures will warm into the low to mid 80s. The upper ridge will become anchored over the TN Valley by Friday morning, while high pressure slowly builds to our south. Expect quiet weather on Friday, as the upper ridge strengthens.
This activity is in association with a short wave trough that is moving across West Texas. Precipitation will affect areas generally east of a Haskell, Abilene to Sonora line this morning, with some redevelopment along the trough axis primarily east of a Haskell, Abilene to Junction line this afternoon.
Upper ridging is crossing the central CONUS with the main axis just moving into the CWA. An upper trough over the western CONUS will push eastward today with southwest flow developing aloft. A weak cold front will cross the area late tonight into Friday bringing cooler temps and breezy northwest winds. Highs will range from the low 60s over northeast WY to the mid/upper 70s over south central SD.
Chances for rain and storms will continue into tomorrow morning as the upper level low moves through Nebraska.
Temperatures will be in the upper 50s for the most part, but far western MN could see the clouds break up this afternoon, so temperatures may be a few degrees warmer there. Expect to see showers expanding across the area on Friday as an attendant warm front lifts into the area, with fairly high confidence in measurable precipitation given model agreement and consistency.
Clouds will then be the main forecast problem for the day as moisture/stratus gets trapped under ridge of high pressure/subsidence inversion. Focus then shifts to next incoming mid-level trough pushing northeast out of the Central Plains tonight. Area expected to remain pretty much precipitation-free through midnight but then approach of the trough and nose of 850mb moisture transport/warm air advection expected to produce scattered/elevated showers and perhaps an isolated thunderstorm or two mainly south of I-90 after midnight. For Friday into Friday night, mid level trough will work in conjunction with surface warm front pushing north.
613 AM EDT Thu Apr 13 2017 High pressure across the Great Lakes region this morning will build across the Middle Atlantic region today and tonight before shifting offshore later Friday.
The trough will weaken as it moves across Florida today, and at the surface, high pressure will build across the mid-Atlantic. As the high strengthens, onshore flow will also strengthen and should act to keep partly to mostly cloudy skies across much of the Florida peninsula.
231 AM EDT Thu Apr 13 2017 High pressure will move in today and remain into Friday night with dry weather.
313 AM EDT Thu Apr 13 2017 With high pressure northeast of the dominating and mainly high thin cirrus passing has set the stage for good net radiational cooling particularly in valley locations and a rather steep nocturnal inversion. More open terrain locations and coalfield ridgetops are experiencing a light east to northeast wind of 5 mph or less around high pressure over the Great Lakes with readings currently ranging through the 50s. High pressure in place at the surface and aloft will provide quiet weather in the short term with just a bit of patchy fog possible in our river valleys late tonight. Bumped highs up into the low 80s for many areas.
with upper ridging planted just to our east (ridge axis is centered across Appalachia) and the bulk of the lower to middle layer moisture positioned over southern Texas. southeast breezes and partially cloudy skies as temperatures warm into the lower 80s by Noon.
Will remain in a rather quiet weather pattern with high pressure over the Southern Appalachian Region through the short term.
Temperatures today will be a bit warmer than yesterday and it will feel more like May than April.
Through this morning, the highest rain coverage will be along and north of I-80, with only scattered to isolated showers and storms to the south. The position of the warm front will be key in this afternoon's high temperature forecast.
Although this will not directly impact Deep South Texas, the system will weaken the high pressure ridge in place and shift it to the east. This will leave the region under generally weak troughing aloft. Weak mid level troughing over the Western Gulf will stick around for Friday, with yet another small chance for showers. Meanwhile, low temperatures will continue to run a bit above normal given the higher dewpoints.
221 AM EDT Thu Apr 13 2017 High pressure will sit off to our northeast.
An active day is in store for the area due to a large trough moving into the PacNW. Another strong windshift is coming later this morning as a cold front associated with the large trough moves through. At 330 am MDT, showers were numerous across southeast Oregon and the higher terrain of southwest Idaho. As the main upper trough axis moves Friday, the showers will continue. Temps will cool sharply from yesterday, with highs today 10-15 degrees cooler than yesterday, and the forecast calls for another 5-10 degrees of cooling tomorrow. The result will be highs Friday from the upper 40s to lower 50s in the lower elevations, and mainly 30s in the mountains.
An overall easterly flow around the base of the ridge should become southeast to south with the slight overall nudge to the east of the main ridge. As for temperatures with no major airmass changes, look for continued well above normal temperatures for today only a few degrees warmer.
This would cause a SE-moving cold front that has entered Southeast Nebraska & Northwest KS to stall. With the N/S-oriented lower-deck trof axis remaining across the Wrn Plains, increasing moisture would be afforded extra time to continue spreading north across KS. A 3rd and somewhat stronger mid-upper trof rounding the base of a mid-upper cyclone drifting east across Srn Canada should be strong enough to force a SE- moving cold front into Central KS Sat Afternoon then into Southeast KS late Sat Night. However, this 3rd upper-deck wave will begin to shear as it encounters a STRONG mid-upper high centered over Sern U. As such this cold front would also decelerate & eventually stall as it crosses the KS/OK border on Sun.
High pressure will build over the region today and tomorrow.
311 AM EDT Thu Apr 13 2017 A weak cold front will dissipate across South Carolina today. High pressure will spread across the Carolinas and Georgia through this weekend.
336 AM CDT Thu Apr 13 2017 Through tonight: We had a few showers popping up yesterday afternoon but today anticipate the northern extent of the subtropical ridge building up into the Lower Mississippi Valley to largely suppress diurnal convective development. Deep mixing by afternoon should get 925 MB temperatures to around 20 degrees which should yield highs today generally a few degrees warmer than was the case yesterday in most spots. Tonight, a few high clouds will continue to stream in from the west but surface winds should again go very light with the lower atmosphere certainly not overly moist.
AN upper level trough will continue showers today and Friday across SW Washington and NW Oregon. THe showers will be most noticeable over the higher terrain. High pressure will end showers Friday night and support dry weather for the weekend.
252 AM EDT Thu Apr 13 2017 High pressure dominates through Thursday.
400 AM EDT Thu Apr 13 2017 A warm front will develop into the area today and then linger through Friday before lifting north Friday night.
Also cannot rule out an isolated shower in the Lower Valley Thursday afternoon, but confidence is currently low on any impacts to the local airports.
352 AM CDT Thu Apr 13 2017 It was mostly clear and cool across the Mid-State early this morning, with temperatures ranging from the middle 40s to the lower 50s. Look for upper level high pressure area to build over the southeastern United States, producing a warm and dry atmosphere across Middle Tennessee.
402 AM EDT Thu Apr 13 2017 Weakening frontal boundary over the state will give way to high pressure building into the region through the short term. The frontal boundary gets pushed off the GA/SC coast late tonight as high pressure centered over the New England/Mid Atlantic states build south down the eastern seaboard. There is some mid to upper level moisture that gets trapped under the high pressure ridge so still expecting some partly to mostly cloudy skies.
146 AM EDT Thu Apr 13 2017 High pressure will bring dry and cooler conditions that will last through Friday. An approaching warm front will bring the next chance of widespread showers this weekend. High pressure and subsidence killed off all of our clouds. Satellite loop shows rapid clearing in the post cold frontal environment. High pressure will continue to build out of the Great Lakes and keep fair conditions in place through the overnight. With mainly clear skies and generally light winds, lows will drop back to around freezing over the NW mountains, to around 40 over the MD border counties. Friday the high slowly retreats to our east and the warm moist air is still approaching the region.
331 AM MDT Thu Apr 13 2017 Upper ridging is crossing the central CONUS with the main axis just moving into the CWA. An upper trough over the western CONUS will push eastward today with southwest flow developing aloft. A weak cold front will cross the area late tonight into Friday bringing cooler temps and breezy northwest winds. Highs will range from the low 60s over northeast WY to the mid/upper 70s over south central SD.
1151 PM MDT Wed Apr 12 2017 Cold front lays across the Wyoming/Colorado state line area this afternoon. Temperatures are in the low 60s east of the Laramie Range with low to mid 50s west.
At the surface, induced lee low between LHX and TAD has kept low level moisture and easterly to southeast winds in place across most the eastern plains through the early afternoon, with drier westerly winds across the higher terrain starting to mix out west of the I-25 corridor at this time. Should see breezy westerly flow persisting across the higher terrain tonight, keeping temperatures up and dew pts low supporting poor RH recovery, especially along and west of the I-25 corridor. Flow aloft relax a tad through the day tomorrow, though will still see breezy westerly winds across the higher terrain through the afternoon. Temperatures to be at or slightly warmer than today, especially across the eastern plains, where could see highs pushing the century mark once again.
Today will be the warmest day of the coming week, with temps punching into the lower 90s, and enough humidity to push afternoon heat indices close to 100.
320 AM EDT WED JUL 13 2016 High pressure sliding to the east and an upper level ridge overhead will cause very warm and muggy weather for the middle of the week.
216 AM EDT WED JUL 13 2016 A warm front slowly lifts across the area tonight through Wednesday night.
Yesterday's trough that brought thunderstorms to northern zones has moved east and drier west-northwesterly flow will prevail today. Thursday will be 5 to 8 degs warmer as a flat upper ridge comes in ahead of the next trough from the Gulf of Alaska.