Aikyam-Lab/Synoptic-Bench huggingface dataset:
Water vapor loop indicated an upper level trough from lower MI to western Ontario. Upper low over far northern Mn will continue to lift NE into Ontario overnight. A lobe of energy rotating around the low will swing through the NE tonight so will maintain some low pops as weak returns showing up on Canadian radar. A quiet day for Friday as high pressure builds into the region. Fairly decent weekend on tap with high pressure keeping conditions quiet.
924 PM EDT Thu Apr 27 2017 A weak cold front crosses the area from the west tonight.
On friday, a warm front will spread north to near Interstate 40 as an upper level low drops to near the Four Corners area.
1025 PM EDT Sun May 7 2017 Currently - A weak ridge from the Gulf of Mexico, extends across Florida past the Bahamas. Weak flow will prevail as weak ridge remains nearby.
The low pressure system over southern California will eject a series of weather disturbances north across Utah through midweek. High pressure aloft will develop across the region late in the week.
High pressure will be in place for the next few days keeping dry conditions in place. Temperatures are expected to fall into the upper 50s to lower 60s north and inland, and in the lower 60s to near 70 along the coast and south. High pressure will keep winds below headline criteria for the next few days.
With high pressure parked over the western Great Lakes, VFR conditions will persist through Monday afternoon. There is good model consensus that by Monday afternoon, the upper levels of a warm front will nose into southwestern WI, gradually spreading widespread clouds across the area tomorrow evening. High pressure is expected to linger just east of the area tonight into Monday morning. Highs should reach the lower 60s well inland, with cooler 50s near the lake.
The North Country remains under the influence of an unseasonably cold, slow moving closed upper low. Monday night will be the coldest night of the coming week with temps lowering into the low/mid 30s with the potential for frost headlines in the Champlain Valley where the frost/freeze program has started.
730 PM EDT Sun May 7 2017 A high pressure ridge will bring mostly clear skies and temperatures in the thirties tonight. A warm front will work into the region Monday night bringing a chance of rain showers.
1026 PM EDT Sun May 7 2017 A high pressure ridge will bring mostly clear skies and temperatures in the thirties tonight. A warm front will work into the region Monday night bringing a chance of rain showers.
834 PM EDT Sun May 7 2017 Low pressure over Quebec will continue to track northeast. Weak high pressure will slide southeast across the area Monday into Monday night.
537 PM MDT Sun May 7 2017 00Z TAF CYCLE VFR conditions prevail and are forecast to persist through the TAF period with strong southerly flow in the lower atmosphere. An unusually strong upper level low will impact northern and central New Mexico during much of the week.
1156 PM EDT Sun May 7 2017 Aviation As high pressure settles over the Great Lakes, the wind will diminish and temperatures will fall into the 20s under clear skies. Even so, another cold night with lows around freezing is expected Monday night.
852 PM CDT Sun May 7 2017 Tranquil night ahead as high pressure continues to settle across the area. Light winds and clear skies are still expected tonight with lows dropping into the lower to upper 40s with a few sites around 50.
757 PM EDT Sun May 7 2017 A pressure ridge will extend through the northern Gulf of Mexico through the middle of the week. The ridge will direct a dry westerly flow into the forecast area, but there will be increased moisture in the north part of the area closer to a stalled front extending through North Carolina. Weak high pressure and drier air continue building into the forecast area and will result in clear skies overnight.
With the aid of mostly clear skies, low temperatures on Monday morning will be a few to several degrees below normal though generally a few degrees higher than the lows from this morning.
/22/ Prior discussion below: Through Monday: The ridge of high pressure aloft over the region will only strengthen through the short term period with any residual cool air brought down on the backside of the eastern CONUS trough effectively disappearing.
20z surface analysis had low over southeast MT with lee trough into western NE and cold front into southwest WY. Water vapour matinee showed upper ridge shifting east of the CWA with upper low spinning over CA. Temperatures will be noticeably cooler, but seasonal.
02z satellite analysis shows upper level trough axis extending from the Canadian border near Sweet Grass, southwest to Lost Trail Pass in extreme Southwestern Montana. Skies will begin to slowly clear throughout the evening hours, with more rapid clearing expected during the early morning hours on Monday as drier air continues to filter in as a weak transient ridge builds into the region. Flow around the upper level trough along the West Coast continues to split overnight. The northern branch of this system progresses eastward through the Northern Rocky Mountains while the southern portion remains in place as a closed low over Southern California through the short term period.
1150 PM EDT Sun May 7 2017 VFR conditions will persist within dry airmass bleeding off of large high pressure center well north/northwest over parts of Canada. NW flow will persist between this ridge of high pressure and stalled low pressure over southern Quebec/New England. Wind gusts will be subdued on Monday as the pressure gradient weakens in response to this building ridge. Despite nearly full sunshine, highs today in the lower to mid 50s will be 10-15 degrees below normal followed by a run at record lows tonight/Monday morning outside of metro Detroit.
723 PM EDT Sun May 7 2017 Even cooler conditions expected tonight with temperatures in the low 30s for most locations under clear skies and light winds.
/issued 140 PM CDT Sun May 7 2017/ The upper ridge and warm air will last into mid-week.
938 PM EDT Sun May 7 2017 East coast upper low has moved far enough east to allow higher pressure over the Midwest and Great Lakes to slip south over the Tennessee Valley tonight.
/22/ Through Monday: The ridge of high pressure aloft over the region will only strengthen through the short term period with any residual cool air brought down on the backside of the eastern CONUS trough effectively disappearing.
/issued 411 PM CDT Sun May 7 2017/ Quiet and beautiful conditions continue to rule the forecast over the next few days as high pressure remains the main influence over the area.
902 PM EDT Sun May 7 2017 Low pressure will maintain precipitation chances early this morning before building high pressure returns mainly dry weather through the first half of the week. Fair weather cumulus has developed in much of the area with the last vestiges of low level moisture manifesting as showers over northern WV and the ridges. Likewise, the northern and western reaches of the CWA will likely fall below freezing.
The ridges should keep wind speeds above 5 mph and not allow sufficient radiational sfc cooling for frost to form in the higher terrain. Minimum temperatures should range from the upper 20s across the Alleghenies to the mid/upper 30s across the lower Susquehanna Valley. Unseasonably cool/broad cyclonic flow continues to dominate the large scale pattern on Monday as deep upper low remains nearly stationary over western New England.
1155 PM CDT Sun May 7 2017 Currently, a large amplitude ridge resides over the central plains in an omega blocking pattern with the western low over southern CA and the eastern low over the Great Lakes.
High pressure will continue to work its way into the region tonight. Clouds will be on the increase Monday as a disturbance dives toward the lower Ohio Valley in the northwest flow aloft and a warm front starts to lift north across the region. The warm front will continue to lift to the north on Monday night with the rain chances lifting north with it. Lows tomorrow night will be much warmer than tonight only dropping into the 50s in most locations.
With clear skies and light winds, temperatures across the area will drop into the lower 40s to near 50 tonight.
A cold front looks to start its trek southward across our counties shortly before sunrise. Water vapor imagery showing pronounced closed low over southern California this afternoon. Seeing some shower/thunderstorm activity developing over Colorado in the southerly flow ahead of this low. Better chances for precip Monday as upper low tracks into Arizona and New Mexico Upper level diffluence Monday afternoon. This will interact with increasing low level moisture pooling into the east slopes of the Laramie Range and pieces of energy being pinwheeled off the low in our area.
Mid level ridge axis will shift over the fa overnight. A weak impulse drifting up the back side of the ridge over western ND ahead of the main wave providing enough support for band of ACCAS in zone of steeper mid level lapse rates with a few ltg strikes vcnty DVL. Temperatures will hinge on cloud cover but with more clouds expected with fropa feel temperatures will be a few degrees cooler.
A cell of high pressure will drift southeast through AL into GA tonight. A modest ridge- valley split is expected with lows in the middle to upper 40s in valleys, and the lower 50s atop the higher elevations above the inversion.
Clear skies and warm conditions were again observed across the region today, as ridging at the surface and aloft remained in control. Monday looks to be a bit breezier, but otherwise pretty similar to today, with highs in the low 80s area-wide.
Mid level moisture is expected increase over the Mexican Plateau over the next 24 hours, so there could be a few pockets of convection firing off the higher terrain of Mexico and moving to near the Rio Grande by Monday evening.
A flat ridge of high pressure will remain over the region through Monday.
1040 PM EDT Sun May 7 2017 A broad area of low pressure will continue to spin over the Northeast and eastern Canada into the first half of the week.
606 PM CDT Sun May 7 2017 An upper level ridge will continue to dominate the weather across North and Central Texas through Monday night.
1214 AM EDT Mon May 8 2017 High pressure should maintain mainly dry weather through the first half of the week. A few mid level clouds should continue crossing the area early this morning as a weak upper trough rotates around an upper low across NY.
/Issued 347 PM CDT Sun May 7 2017/ Upper ridging over the area will result in a couple more warm and dry days.
1144 PM CDT Sun May 7 2017 Based on current temperature trends this evening, cannot rule out patchy frost with overnight lows down into the lower to mid 30s across far eastern Trempealeau, La Crosse, Vernon, and Richland Counties. Latest water vapor satellite imagery indicates upper level cut off/closed low over the southwest United States/upper level trough over northeast United States and upper level ridge over central United States. Latest 19z surface analysis shows elongated ridge from the Southern Plains into southern Ontario Canada.
1148 PM CDT Sun May 7 2017 An upper level ridge will continue to dominate the weather across North and Central Texas through Monday night.
02z satellite analysis shows upper level trough axis extending from the Canadian border near Sweet Grass, southwest to Lost Trail Pass in extreme Southwestern Montana. Skies will begin to slowly clear throughout the evening hours, with more rapid clearing expected during the early morning hours on Monday as drier air continues to filter in as a weak transient ridge builds into the region. Weak high pressure will bring mainly clear skies and VFR conditions to the entire region on Monday with relatively light winds. Flow around the upper level trough along the West Coast continues to split overnight. The northern branch of this system progresses eastward through the Northern Rocky Mountains while the southern portion remains in place as a closed low over Southern California through the short term period.
610 PM CDT Sun May 7 2017 Currently, a large amplitude ridge resides over the central plains in an omega blocking pattern with the western low over southern CA and the eastern low over the Great Lakes.
637 PM CDT Sun May 7 2017 Latest radar and satellite images are indicating scattered showers and isolated thunderstorms have overcome some of the low level dry air in eastern ND and west central MN. Mid level ridge axis will shift over the fa overnight. A weak impulse drifting up the back side of the ridge over western ND ahead of the main wave providing enough support for band of ACCAS in zone of steeper mid level lapse rates with a few ltg strikes vcnty DVL. Temperatures will hinge on cloud cover but with more clouds expected with fropa feel temperatures will be a few degrees cooler.
Atmosphere remains very dry with strong high pressure overhead.
830 PM EDT Sun May 7 2017 00z sfc analysis shows high pressure building into eastern Kentucky. This will result in temperatures falling into the 30s for most locations and frost developing in the valleys toward dawn as moderate ridge to valley temperature split sets up. High pressure will control our weather through tomorrow. Clouds will increase on Monday as a warm front activates to our west.
723 PM EDT Sun May 7 2017 Upper air pattern consists of a 500 mb ridge across the plains and troughs in the western and ern U. As a high pressure system builds into the region tonight into Monday winds will diminish to 20 knots or less and remain below 20 knots through the rest of the forecast period.
628 PM CDT Sun May 7 2017 Latest water vapor satellite imagery indicates upper level cut off/closed low over the southwest United States/upper level trough over northeast United States and upper level ridge over central United States. Latest 19z surface analysis shows elongated ridge from the Southern Plains into southern Ontario Canada.
GAH PREVIOUS SHORT TERM DISCUSSION The upper-level ridge axis will be positioned through North Dakota to begin this evening, while the energetic northern portion of the Western split-trough swings across the Divide. The cold front in advance of the trough will be moving east through the eastern half of the local CWA. With the CAA, expect overnight lows to run 15F to 20F degrees cooler for the western counties. Monday will continue with the cooler temperatures, actually just a return to normal. Winds will diminish Monday night while a narrow and shallow ridge rides over the area.
The Northland's fair weather will continue for much of the week, including Monday, but Monday will be a bit cooler than what we had for today (Sunday). An axis of high pressure extending from northern Canada through the western Great Lakes will help maintain easterly flow into Monday. The easterly flow over Lake Superior will strengthen Monday in response to low pressure in the Northern Plains approaching from the west. The stronger flow over the Lake will make for cooler weather around Lake Superior, with highs only in the upper 40s and low 50s. Areas well inland will reach the low to middle 60s.
/issued 317 PM CDT Sun May 7 2017/ Upper ridge continues to be centered over the country's midsection, sandwiched between two powerful low pressure systems on either coast. The ridge will continue to slowly and resistantly drift ewd as we move into the first half of the work week, which will continue to spell fair wx and warming temps.
734 PM EDT Sun May 7 2017 A broad area of low pressure will continue to spin over the Northeast and eastern Canada into the first half of the week.
945 PM CDT Sun May 7 2017 Based on current temperature trends this evening, cannot rule out patchy frost with overnight lows down into the lower to mid 30s across far eastern Trempealeau, La Crosse, Vernon, and Richland Counties. Latest water vapor satellite imagery indicates upper level cut off/closed low over the southwest United States/upper level trough over northeast United States and upper level ridge over central United States. Latest 19z surface analysis shows elongated ridge from the Southern Plains into southern Ontario Canada.
Morning surface analysis shows the center of now-post-tropical- cyclone Irma right over the HUN CWFA, perhaps just SW of the Huntsville metro area. The interaction of these two ridges and the shearing of the remnants should continue into Wednesday with the center of the future mid- level trough as the cutoff low (former remnants) opens as a wave.
405 PM CDT Tue Sep 12 2017 Interesting meteorological process underway nearby that we normally do not see around here in September as it relates to tropical cyclone transitions. The upper portion, essentially everything above 400 mb, of Irma's circulation has remained intact in the vicinity of Memphis, TN while the lower portion of the column has detached while warm occluding over northern Alabama.
255 PM MDT Tue Sep 12 2017 An upper level ridge will be over the area tonight and into Wed, but a weak disturbance is forecast to move through the upper ridge on Wed. Highs on Wed across the southeast plains should be around 10 degrees above average, and around 5 degrees above average in the high valley locations. Still expecting a pattern shift mid week with the monsoonal ridge being replaced by a series of disturbances coming into the western conus.
222 PM CDT Tue Sep 12 2017 An upper low is over the southeast part of the country, and another upper low is just off the coast of California. Upper ridging is over the southwest part of the country, and the CWA is under north to northwest flow aloft. There is a slight chance of thunderstorms across the higher terrain Wednesday afternoon.
Mid level ridge will be in place as we go through mid week with its axis extend northeastward into the Panhandles. As we go toward the end of the work week, a trough will be digging south out of Alberta toward the Four Corners region.
Very light winds overnight will turn to light southeast to south on Wednesday with broad high pressure over the Gulf. At the sfc, high pressure across east Texas, will slowly shift to the east through the next 24 hours.
The cutoff low will be absorbed back into the main flow aloft Wednesday, ushering in a mid-week ridging pattern overhead. An active upper-level pattern over the Northern Plains may help to provide sufficient surface forcing and moisture supply ahead of a cold front for widespread precipitation late in the weekend. After the high clouds move off overnight, clear skies and light variable winds will remain through the rest of the forecast.
241 PM MDT Tue Sep 12 2017 Water vapor imagery shows compact upper low centered across western SD pushing E/NE. Activity tonight will continue to slide eastward as the upper low moves into the central and eastern Dakotas overnight. Flat upper ridging will continue across the region through Wednesday with the next upper wave bringing additional chances for storms Wed afternoon and evening.
The remaining upper level trough will then start to lift northeast across the lower Ohio Valley on Wednesday. For Wednesday, rain chances will increase as the upper level trough moves across the region. The highest gusts look to be in the 30-35 mph range. Highs look to top out in the mid 60s, perhaps even in the lower 60s in some locations.
335 PM EDT Tue Sep 12 2017 High pressure will remain over the region through Wednesday.
344 PM CDT Tue Sep 12 2017 A few light showers have developed near the TX and NM state line along a wind shear axis between the remnant tropical system over the MS valley and upper ridge centered over the 4-corners.
Increased cloud coverage will keep overnight lows a little warmer across much of the CWA with lows expected to be in the mid 60s. With less low level moisture and clouds across southeast Alabama, forecast lows for a portion of that area dip into the low 60s and even upper 50s for a very small portion.
123 PM EDT Tue Sep 12 2017 A washed out cold front has settled into nrn lower Michigan, with only a narrow and drying thin corridor of moisture associated with it. High pressure remains sprawled across much of the Great Lakes region early this morning. The northern edge of the high cloud shield from Irma will clip our far SE CWA. Low temps tonight range from the mid 40s across interior sections of Northern Lower Michigan to the low to mid 50s across the rest of our CWA.
637 PM EDT Tue Sep 12 2017 The remnants of Tropical Cyclone Irma will gradually dissipate over the mid Mississippi valley through Wednesday. Weak high pressure will build into the area through the weekend, as Hurricane Jose spins in the Atlantic between the Bahamas and Bermuda. Lows from the mid 60s inland to the lower 70s coast look on track. Weak high pressure over the southwestern Atlantic will be in control on Wednesday across the region as the upper low from the remnants of Irma spins over the Mid-Mississippi Valley.
/issued 306 AM CDT Tue Sep 12 2017/ An upper high centered over the 4 Corners region continues to dominate the weather for west Texas. An upper low off the coast of CA will cause the ridge to gradually deamplify and push eastward through the week.
A broad area of high pressure centered over the Coulee region of Wisconsin has helped usher in subsidence, clear skies, and light and variable winds.
128 PM EDT Tue Sep 12 2017 High pressure will remain across the region today.
Issued by National Weather Service AUSTIN/SAN ANTONIO TX 257 PM EDT Tue Sep 12 2017 Isolated showers are moving northeast from the Lower Keys into Florida Bay.
Lenning 254 AM CDT Generally translucent cirrus shield on the northwest flank of former tropical cyclone Irma will filter sunshine today, but temps should still rebound nicely, climbing well into the 70s. Once again today, winds off the lake will temps a bit cooler lakeside. - Izzi 254 AM CDT In the wake of Irma's remnants, a more progressive pattern will set up over the CONUS, starting with an amplifying long wave trough over the western U. Downstream amplification of an upper level ridge should set the warming temperatures locally heading into the weekend.
Although this low was advecting cooler, drier air into our forecast area in the low levels, and the satellite presentation looks extratropical, there was still a substantial warm anomaly from 500 mb upward near the system's upper level center. As the low pulls away from our forecast area, the rain chances will gradually diminish, and we expect no rain after sunrise. Despite the expected increase in insolation, relatively cool temperatures at 850 mb will limit mixing/heating, and high temperatures will "only" be in the lower to mid 80s, which is below average for this time of year. The lower humidity and fresh breeze will make it feel rather comfortable.
The high risk will continue through this evening, then gradually decrease as winds and swells over the Gulf continue to diminish. Aloft a trough over the eastern U. into the western Gulf lifts up north as a ridge just east of FL slides west into the Gulf by Sat. The trough then drops south down along the eastern seaboard to the FL and the Bahamas where it resides through midweek. and ridging across FL into the Gulf. A ridge of high pressure will build north of the waters this week, allowing easterly winds to return by the end of the week.
319 PM EDT Tue Sep 12 2017 High pressure will provide the region with another cool night, along with valley fog towards daybreak.
408 PM CDT Tue Sep 12 2017 Quiet weather continues across the region, as high pressure maintains control across the upper midwest. The thermal ridge leans in even farther tomorrow, so expect a few degrees warmer than today, possibly reaching 90 degrees in western MN.
Weak high pressure will build into the area late this week into the weekend. Today: TD Irma continues to becoming embedded within a large upper low and this was occurring well to west over the southeast states across the Gulf Coast and Tennessee Valley. Weak upper ridging over our area Wed through Fri will yield warming temperatures and retain mid/upper 60s dewpoints.
Fairly strong southerly flow ahead of the trough with good warm air advection. Temperatures with a warm start this morning will climb into the lower 90s over most of the forecast area.