Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 335 AM CST Fri Mar 2 2018/ Upper level ridging will persist across our part of the country today though some changes are expected into the weekend. An upper level low will come ashore the Pacific Northwest late this evening resulting in backing flow on Saturday.
The dynamic midlevel trough has pivoted across the central Great Lakes overnight, becoming negatively tilted well east of southeastern Michigan. Very strong upper level confluence, deep isentropic downglide, and differential geopotential height rises off of the lowered height anomaly all supports deep subsidence within the column today. Associated surface ridging will begin to build into the forecast area as the center of anticyclone aligns with the southern Lake Michigan basin by this evening. As for clouds, model data shows an 850 mb temperature gradient become aligned north to south over center sections of the Lower Peninsula. The northern cwa will see the warmer readings with little to no snowpack from this past event. Generally went a degree cooler than MOS for tonight with lows likely dropping to around 20 degrees in many areas.
Fog may also form along the edge of the low cloud deck, affecting mainly KHOB and KINK. Will introduce the low clouds to most terminals, but allow later issuances to better determine/time the extent of the fog.
In the wake of last night's cold front, noticeably cooler and less humid conditions are on tap for today.
244 PM CST Fri Mar 2 2018 Ridge of high pressure currently extending from Ontario southward to the Gulf Coast will shift slowly eastward over the next 24 hours. As a result, am expecting afternoon highs just a few degrees warmer than today. generally topping out in the lower to middle 50s.
Cooler in eastern ND where increased clouds will inhibit warming.
259 PM MST Fri Mar 2 2018 21z surface analysis had low over northeast WY with warm front into eastern NE. Water vapour showed upper low heading into the western WA/OR coast with ridge shifting east of the CWA. Upper low the main concern this forecast.
This seems an unlikely possibility, as the lowest levels of the atmosphere remain quite dry.
A low pressure system over the Pacific Northwest will continue to bring in colder, unstable air today into this weekend.
1225 PM EST Fri Mar 2 2018 Dry weather is expected from today through the weekend as a ridge of high pressure settles across the area.
122 PM EST Fri Mar 2 2018 Dry weather is expected through the weekend as a ridge of high pressure settles across the area.
A relatively pleasant start to the extended periods is anticipated Saturday as high pressure aloft amplifies across the Missouri River valley and an upper level low pressure system moves onshore across the Pacific Northwest.
Temperatures were able to reach the upper 70s and low 80s over land with winds from the northwest to north over the Lower and Middle Keys and shifting from the west over the Upper Keys. A strong low pressure, centered just east of Long Island this afternoon, will continue to move east tonight and tomorrow. From this low, a cold front stretches towards central Florida and it should move south and reach the Keys later tonight. Another thing to thank this powerful low pressure is the increase in winds.
1019 AM CST Fri Mar 2 2018 Ridge of high pressure extending from Ontario southward to the Gulf Coast will dominate the weather across central Illinois today. Clear and cool this morning with temps within a degree or two from the freezing mark throughout Central IL. Light northwesterly winds dominate and are expected to become more northerly today as the ridge axis slips to the east. Even with the cooler air and the high pressure moving through the Midwest, plenty of sunshine will help to keep high temps in the upper 40s/lower 50s, above normals for this time of year.
1142 AM EST Fri Mar 2 2018 Latest WPC surface analysis shows a very strong mid latitude cyclone centered south of Massachusetts. The accompanying cold front drapes southward from the low, then westward across the central Florida peninsula. NNW wind around 10 KT later this morning will turn NNE as weak cold front moves through. Drier air associated with this front will hold through the weekend with cooler mornings and temperatures closer to average for this time of year.
400 PM EST Fri Mar 2 2018 Mostly clear skies will be seen through the short term, as an upper level ridge of high pressure gradually shifts from the Plains to the Mississippi Valley. Given the drier air in place and mostly clear skies, have favored a wider diurnal range, staying on the cooler side of guidance for the lows, while going warmer for the highs. Lows tonight and Saturday night will be in the 20s, with highs on Saturday in the low 50s for most locations.
1251 PM EST Fri Mar 2 2018 Low pressure pressure will move off the New England coast today.
137 PM CST Fri Mar 2 2018 High pressure over the region today under an upper level ridge, will allow for mild temperatures and light winds through this afternoon and tonight. The south winds will allow temperatures to climb into the lower 60s.
307 PM EST Fri Mar 2 2018 The North Country will still experience some snow tonight from the strong low pressure system south of Cape Cod.
Highs should top of in the low to mid 50s north /upper 40s highest terrain/ to upper 60s central. Not many obs to go by for the higher elevations but hi-res models all in agreement at wind gusts in excess of 40mph possible for the higher peaks. Temps much cooler than recently especially when you add the breezy/windy conditions. Cold conditions tonight with below freezing for NE GA and right at the freezing mark North of I20. We have started the freeze program for areas outside of the mountains but with temps just touching freezing, will not go with a watch at this time. A more likely scenario would be for day shift to go straight to warning should 12Z guidance come in a little cooler.
This should diminish towards evening as we lose heating and the upper level ridge builds in more from the west. Clouds will thin out across the east, as an upper level ridge of high pressure builds in from the west. After a few straggler rain showers finally exit the area early this morning, a ridge of high pressure will spread across the region. This ridge will bring cooler and drier air into eastern Kentucky, which will lead to clearing skies. Saturday should be slightly warmer, with highs reaching upper 40s and lower 50s around the area. High pressure will remain firmly in control to bring the weekend to a close allowing for clear skies and mild daytime temperatures and cool nights.
214 PM CST Fri Mar 2 2018 High pressure is now centered over central Illinois, and this slight shift east has already offered up a pronounced shift towards warm advection. So, we'll go on the mild side of guidance in Iowa and Missouri, and near cooler guidance in Illinois, where winds under 5 mph are possible tonight.
310 PM CST Fri Mar 2 2018 Today a broad area of high pressure is building across the Upper Great Lakes.
207 PM MST Fri Mar 2 2018 A warming trend will continue today ahead of an approaching low pressure system. High temperatures will likely reach the mid 70s across the lower deserts, making it the warmest day in nearly two weeks.
A deep upper level low pressure system is centered just off the Pacific Northwest coast and remain nearly stationary through tonight. A band of moisture rotating around the low currently stretches from northeast Oregon to northwest Washington and is slowly moving north.
Dry SW flow aloft will be over the region today and tonight as a sfc lee trough strengthens along the front range. With downslope SW low level flow in place aftn highs across the plains will be around 10 degrees warmer than yesterday.
A slightly elevated nerly flow will persist through the afternoon as the remains under a somewhat tight gradient between lower pressures over the Gulf and high pressure centered over the wrn Great Lakes.
Stronger, deeper downslope momentum will overspread the High Plains resulting in deeper leeside trough and warmer 850mb temperatures. This will translate to warmer surface temperatures as well, with the expectation of afternoon highs in the upper 70s, perhaps 80 in a couple spots across far west central and southwest KS.
/issued 937 AM CST Fri Mar 2 2018/ High pressure at the surface and aloft will keep the skies clear with plenty of sun for today.
The latest sfc analysis was indicating an elongated ridge extending down along and west of the mid to upper MS RVR Valley, while south- southeasterly return flow gradient was organizing up the western plains.
1116 AM CST Fri Mar 2 2018 238 AM CST Looking at a pretty quiet period thanks to high pressure.
Expect a noticeable difference in airmass this afternoon, with sunny skies, breezy northerly winds, dewpoints in the low to mid 30s, and highs in the upper 50s to upper 60s. Tonight, temperatures fall into the mid to upper 30s, with a few locations near and north of the Highway 278 corridor falling to 32F.
Low level southerly flow will result in warmer temperatures tonight.
Dry and quiet weather is expected across the region today as high pressure slides through. With the expected clouds at times plan on highs ranging from the mid to upper 40s over portions of southwest Wisconsin to the lower 40s over southeast Minnesota into northcentral Wisconsin. Meanwhile a trough digs into the Rockies tonight into Saturday with an increasing pressure gradient over the region, with south/southeasterly flow developing at the surface.
As for temps, highs will be just a bit lower than yesterday's, in the low to mid 50s. Byrd An upper level RIDGE combined with SE low level flow will prevail across our region for the upcoming weekend, maintaining mostly dry weather and above average temperatures.
220 PM EST Fri Mar 2 2018 Continued windy into tonight in the wake of a cold front, with deepening east coast low.
Brisk 50 to 55 knot winds aloft over Carbon County near 700 mb may help yield 50 knot gusts near Arlington and Elk Mountain, thus will continue the high wind warning there. Expect winds to partially decouple at Arlington, thus ending the high wind threat in the early evening. Relatively mild overnight with southwest flow aloft and a warmer than normal airmass in place.
/issued 236 AM CST Fri Mar 2 2018/ High pressure both at the surface and aloft will build over the Mid South today and persist through the first half of the weekend. Lows will be chilly tonight with temperatures dropping into the lower to middle 30s.
Temperatures are expected to remain cooler than normal.
and concern is plenty of warm air on the east/northeast side of the storm keeping rain/freezing rain the main threat early on over central ND. Big challenge remains where the rain/snow line will be - this will have a large impact on expected threats (rain/freezing rain/snow) and snow amounts. Upper level analysis places low off the Pacific Northwest with ridge over the eastern plains. For tonight, upper low off the Pacific shore pushes onshore and stretches to the northeast. On Saturday, upper low transitions over the Canadian Rockies as a deep trough stretches to the south and pushes eastward.
The high will slide east today and into the Great Lakes tonight. The winds will not be overly strong, but with the dry airmass over head will likely see some elevated fire weather conditions develop across southeast Kansas and western Missouri where the higher winds and low humidities will be co-located. High today will be a few degrees higher than yesterday given the southerly winds and sunshine, with readings in the mid 50s to near 60 and overnight lows tonight in the low to mid 30s under mainly clear skies. Mid level ridging and a southerly low level flow will continue Saturday into Saturday night with a quiet and mild period. Moisture will increase Saturday night ahead of an approaching upper level trough.
This will result in increasing south winds and warmer highs in the 60s to lower 70s under mostly sunny skies.
1251 PM EST Fri Mar 2 2018 Continued windy through today in the wake of a cold front, with deepening east coast low.
An upper low over the offshore waters will drift southeast into Oregon Saturday night. The threat of showers will decrease through the weekend as the upper low moves farther away from Western Washington.
The front with slightly drier and cooler air - along with decreasing clouds - in it/s wake is over the Nature Coast and will work southward during the rest of the day. High pressure builds into the west half of the Gulf today with northwest to north and briefly gusty winds. The high continue to build in and ease eastward tonight with a tightening gradient supporting exercise caution wind speeds.
241 PM EST Fri Mar 2 2018 High pressure will build into the region for the weekend, resulting in dry conditions. Wind gusts remain the primary story with the weather this afternoon, although the high wind warning has been cancelled for Garrett and eastern Tucker counties. These gusts will begin to ease off overnight as high pressure moves into the area. Quiet and dry weather is expected through the period as ridging builds across the region. Low pressure will develop in the Plains and shift east.
322 PM EST Fri Mar 2 2018 High pressure and dry conditions will be present through the weekend. High pressure and dry conditions will be present for Saturday and Saturday night.
A warming trend will continue today ahead of an approaching low pressure system. High temperatures will likely reach the mid 70s across the lower deserts, making it the warmest day in nearly two weeks.
318 PM CST Fri Mar 2 2018 Upper level ridging will dominate the weather tonight and Saturday ahead of a deep long wave trough digging south along the west coast. Have went with the lower guidance for lows due to the light winds and fairly dry air in place. The exception will be across far eastern portions of north central Nebraska around O'Neill and Ewing where south winds will stay up a bit and lows will be in the lower 30s. This will turn winds to the southeast across the area, with warmer air working northwest into the region. Latest ECMWF run continues on track with northern trajectory and latest GFS has closed low moving further north.
/Issued 318 AM CST Fri Mar 2 2018/ (Today and Tonight) The recent rainfall combined with the clear skies and nearly calm winds will produce some patchy and very shallow ground fog in some areas early this morning even though the low level airmass would normally be too dry for fog. Lows temperatures tonight will not be as cool as this morning and only bottom out in the low 40s east to upper 40s west where increasing dewpoints and winds of 5 to 10 mph will lessen surface heat loss.
Temperatures are expected to remain cooler than normal. The majority of surface and pavement temperatures have worked their way above freezing this morning so I expect to allow the remaining winter weather highlights addressing the widespread slick conditions to expire with the idea that bulk of the ongoing snow has stopped accumulating on most of the lowland and valley pavement. Over the higher elevation eastern TAF sites this band will arrive as a 3 to 5 hour period of -SN with a change to -RA at KSFF after 18Z.
The coastal trough is forecast to develop overnight and that should be the impetus for generating some light rain and/or drizzle, mainly starting out as drizzle but becoming more like rain toward morning as the nice mid level theta-e ridge moves into the area from the southeast. This ridge, with PWATs around 1.
Strong high pressure will build to the Northwest Tonight, then to the North on Saturday, providing clear skies.
1004 AM MST Fri Mar 2 2018 Current surface map places trof of low pressure across eastern Wyoming into eastern Colorado. For today, upper level ridge shifts across the northern Plains, with low level thermal ridge over the forecast area. Warmest temperatures will be in downslope area of northern/eastern Black Hills Upper low moves through western CONUS Saturday, with surface cold front sliding into northeast Wyoming/northwest South Dakota Saturday morning and through rest of the forecast area Saturday night.
1234 PM EST Fri Mar 2 2018 Aviation High pressure will be situated across the Great Lakes region from today through the weekend.
Latest rap and satellite imagery showed a zonal flow in the upper levels as well as ridging building into the ArkLaMiss from the Plains in the lower to middle levels of the atmosphere. On the surface a secondary cold front had pushed across our southern counties. A 1030 mb high over the Great Lakes will build high pressure into the forecast area. After the high clouds clear this morning clear skies is expected through tonight. It will be a little cooler today with highs from the upper 50s northwest to the middle 60s southeast. There may be some normally cooler locations that may briefly touch freezing during the early morning hours. Another cool night is expected on Saturday night as clear skies and light winds will allow heat to easily escape the lower reaches of the atmosphere.
459 PM EST Fri Mar 2 2018 Building high pressure will ensure dry and seasonably cool conditions for the weekend. An update was issued for tonight to correct wind gusts over the ridges. Otherwise, overall wind/wind gusts will continue to ease off tonight and into Saturday as high pressure moves toward the area, which in turn will veer the boundary layer wind northward and diminish the upslope component.
However, with temperatures well below freezing, some slick spots can be expected on roadways where fog is present. Otherwise, look for increasing clouds today as the upper ridge axis slides east and we get into low level return flow.
Temperatures so far have warmed into the low to mid 70s, and some upper 70s are probably going to be reached over the next couple of hours.
Main issue is the timing of the lowering CIGS and VSBYS (mainly the former). Expect east winds to diminish and become more northeast overnight (stay east at KLRD for the most part), as the coastal trough begins to take shape overnight. A coastal trough will develop to the south which will lead to better chances of showers on Saturday.
Temperatures are expected to remain cooler than normal. Winter weather advisories have been adjusted to address this mornings warmer temperatures allowing for snow accumulation to minimize/end on most roadways in the Spokane and Coeur d' Alene area while locations further south and east in North Idaho are lagging a bit as far as shedding recent and ongoing snowfall thus winter weather advisories issued for Central Panhandle Mountains, Lewiston area (primarily east of Lewiston, Idaho) and Lewis and Southern Nez Perce Counties from now until 4 pm.
Drier and cooler air has infiltrated the area for the first time in a while. As the system over the Mid-Atlantic and New England region cuts off and digs into the Atlantic and the Pacific trough comes more onshore the pattern will amplify with a building ridge across the cntrl CONUS.
Sharp short wave trough axis is now crossing the eastern half of the state early this morning with a closed mid level circulation swinging through Pennsylvania. Will have to maintain some lower end PoPs across NE lower Michigan for the next few hours as sharp short wave trough axis and associated forcing slips eastward out of the region. Strong subsidence and drier air along the front end of incoming short wave ridge will clear things out as we go through the morning (perhaps faster) with a good amount of sunshine then anticipated.
Temperatures were in the high 70s-near 80 by mid-morning along the Keys with winds generally from the northwest 5 to 10 mph. A strong low pressure, centered this morning south of Long Island, is causing all kinds of extreme weather for the northeast. A dry cold front will make its way south over the Florida peninsula this afternoon and reach the Keys later tonight.
A much cooler and drier airmass has moved into the area in the wake of a cold front that moved through yesterday. Meanwhile, mid-level ridging will also build over the area today.
Noticeably Cooler Tonight. Cold front pushed south of the area earlier today and north winds behind the boundary are advecting much cooler and drier air into the area. While min temps will be much cooler, they will actually be close to seasonal norms from upper 40s to mid 50s.
Cold front with a line of snow showers moved across western Idaho around sunrise, a little later than expected. Colder air will come in from the west later today and tonight as the offshore upper low moves onshore. A short wave trough rotating around the low will come into our CWA Saturday afternoon with a chance of snow showers, but it should be only a minor event. Clouds and precipitation chances increase across far southeast Oregon Saturday morning and in much of the area during the day Saturday as the low moves inland. While the air mass will be cold enough for snow to the lowest valley floors, accumulation will be limited to sites above 4k feet.
In the mid levels a deep trough will move on shore over the west coast of the CONUS. downstream of this deepening trough, over the local area mid level ridging will build in for Friday and Saturday.
342 PM CST Fri Mar 2 2018 Latest UA analysis and WV imagery shows low amplitude ridging over the southern plains building eastward over the area. At the sfc, a ridge of high pres extends south from the upper MS valley to the northwest Gulf.
Low Pressure will track along the boundary across the area this weekend.
1037 PM EDT Thu Jul 20 2017 Currently - A weak pressure pattern remains in place across the Florida Keys, due to a split ridge setup. Short Term Update - Rain chances will remain slim through the overnight period as a SAL, and associated warmer/drier lower levels, begins to spread across the Florida Keys.
A low pressure system was passing to our north and creating gusty winds over portions of the kittitas and yakima valleys this evening. As the low moves away the winds will lessen tonight.
A building ridge of high pressure will lead to warmer temperatures into the weekend.
There has been a little bit of convection across NE AL earlier this afternoon, courtesy of a weak upper disturbance moving swd along the ern fringe of the upper ridge axis. Conditions should begin to gradually improve with the onset of the evening hrs, as temps quickly fall into the 80s this evening and eventually into the lower/mid 70s after midnight, under predom mostly clr skies. High pressure is xpcted to be layered across the mid/srn Atlantic states while the upper ridge axis gradually translates ewd across the SE region. Slightly cooler conditions/higher rain chances are then xpcted going into the weekend period, as Gulf moisture begins to increase into the area and a weak cold front approaches from the NW.
A ridge of high pressure aloft will maintain VFR conditions thru the period.
Temperatures will be slightly warmer on Friday as the dry southwest flow continues.
Then as high pressure builds in from the west, we can look forward to a dry weekend, Temperatures will start out relatively cooler, with the biggest cool down expected in Johnson county Friday.
Steep mid-level lapse rates, surface dew points reaching the low 60s, and cross-boundary effective bulk shear in the 40-50 knot range has built an environment ample for supercells across western North Dakota. a closed upper level low will meander east over the southern Canadian Prairie, shifting a surface boundary eastward through the state. The 850 mb thermal ridge axis stays centered over the upper high plains until later in the evening, keeping high temperatures in the 80s and 90s across the state.
A building ridge of high pressure will lead to warmer temperatures into the weekend. Today was a day much like yesterday with afternoon highs close to seasonal averages, except slightly warmer than normal temperatures in the North Bay Valleys. An upper level ridge, currently centered over the southern Great Plains and Four Corners area, is forecast to build westward and across California over the next few days.
924 PM EDT Thu Jul 20 2017 A cold front will approach the area tonight and cross through by Friday morning.