Aikyam-Lab/Synoptic-Bench huggingface dataset:
Moisture channel imagery shows the strong cut off upper low is now located over the middle Tennessee valley. System is moving ever so slowly to the east as its running into strong high pressure sitting off the eastern seaboard. Pattern overall remains highly amplified and blocky in nature with a sprawling upper level ridge over the Rockies and another upper trough just off the west coast. Moisture continues to wrap around the departing upper low with light rain still ongoing over eastern Arkansas. Upper ridge will slowly advance towards the area through the period but overall blocky pattern means it will be a slow process. In the interim, a back door cold front will move through the area Saturday night but no precipitation is expected.
400 AM CDT Fri May 5 2017 An anomalously deep upper low located over Tennessee will dominate our weather today. As the upper low moves eastward, a band of wrap-around rain is expected to affect the northern part of the area for the late morning into the afternoon.
but most areas will see ample sunshine as temperatures rebound into the lower 60s/upper 50s. a quick wave diving into the main trough will bring a chance for some showers mainly over Indiana.
207 AM MDT Fri May 5 2017 Upper level analysis has a long wave ridge over the Rockies creating northwest flow across the forecast area. At the surface, weak high pressure is centered over CWA, with light winds and clear skies. Upper ridge will continue to build and slide eastward, becoming centered over the forecast area by Saturday. This will bring warmer conditions with temperatures 15-20F above normal this weekend.
1219 AM CDT Fri May 5 2017 Upper level low pressure continues to exit the region at this time taking the majority of the mid to low level moisture with it.
High pressure will continue to move in to the region. The weather story for today and the weekend will be sunshine for everyone and dry weather! Upper level ridging will take place over the Central U.
553 AM EDT Fri May 5 2017 Low pressure will maintain rain chances and colder temperatures through the weekend. Low pressure will continue up the Ohio river valley this morning and is progged to be north of the forecast area by mid/late afternoon. Widespread rain ahead of the low will continue up until mid/late morning when the associated dry slot pivots over the region. Not much change is expected over the weekend as the sharp meridional pattern remains in place and maintains the large upper trough over the forecast area through the period.
259 AM CDT Fri May 5 2017 A deep-layer cyclone over the TN Valley early this morning will gradually evolve into a full-latitude trough across eastern North America, while farther to the west, an amplified ridge will shift from the Interior West to the central part of the nation. The aforementioned, mid-level ridge will remain intact over the Great Plains through the weekend, yielding dry conditions and above normal high temperatures. A mid-level ridge will be maintained through the early to middle part of the upcoming week across the central and southern Plains, downstream from a subtropical-branch upper low meandering from the southwestern U.
1131 PM MDT Thu May 4 2017 Large upper ridge will build across the central Rockies and adjacent plains through the short term period, resulting in mostly clear skies, light winds, dry and warm conditions. This is due to a ridge in place over the CWA with a developing closed low pressure system over the desert southwest.
The high pressure ridge that gave us sunny skies and very warm temperatures into the lower 80s will slowly be pushed eastward as a pretty dynamic low pressure system moves into the Northern Rockies. Saturday night the slow moving cold front, that has served as a convective initiation point Friday and Saturday, will shift east of the Divide.
344 AM CDT Fri May 5 2017 An upper level ridge over the Rockies today will slowly progress toward the high plains by Saturday.
A cold front will move through forecast are today and interact with an unstable airmass ahead of the front resulting in scattered to numerous showers in the eastern mountains along with isolated thunderstorms.
339 AM CDT Fri May 5 2017 The 500mb ridge extends from Mexico up through AZ, central MT, and western Canada.
324 AM CDT Fri May 5 2017 Clear skies, light winds and seasonably cool temperatures were found across the region early this morning as the area was under upper level subsidence northwest of a cutoff upper low over the TN Valley region. As this low opens into a longwave trough over the eastern U. , a deepening trough over the west coast and sharpening ridge in between over the rockies will result in an omega block pattern over the continental U. A weak upper level vort max topping this ridge will dive down across the western Great Lakes tonight, bringing a threat of at least sprinkles into our far eastern counties.
412 AM CDT Fri May 5 2017 An upper ridge will build over the Rockies today and will build east over the Panhandles over the weekend.
430 AM EDT Fri May 5 2017 A potent upper-level low pressure system remains centered across the Deep South this morning while an associated cold front is pushing through our area. Because of this, a Lake Wind Advisory has been issued from Pasco county north across the Nature Coast where the highest sustained wind speeds are expected. Temperatures will remain steady for most of the day as CAA will bring cooler, drier air into the peninsula. Highs today will be around 10 degrees cooler than yesterday with noticeably drier dewpoints to accompany the cool down.
347 AM EDT Fri May 5 2017 A cutoff low pressure system is spinning over northern Alabama and Tennessee at this hour. A cold front is draped across the Florida Panhandle and the Eastern Gulf of Mexico to the Yucatan Peninsula. The upper low over the Tennessee Valley will begin to move northeastward today. A large area of high pressure over the Atlantic will be attacked on its northern flank by a trough digging southward out of Greenland. Meanwhile a trough will dig southward across the eastern United States and absorb the upper low. The cool front associated with the low will finally cross the Keys area around midnight tonight.
A cold front will continue to push across the Southern Appalachian reduced VIS and local MVFR to IFR conditions. will see cooler air push into the region as an upper low moves in. Moisture and weak lift rotating around the low will continue the scattered showers and low clouds.
Farther south, additional convection has develop along and south of I-85, in an area ahead of a pre-frontal trof. Low level moisture remains plentiful across central Alabama due to remnants of Tropical Cyclone Cindy. A weak cold front has pushed into nw Alabama and will be near the I-59 corridor by 21z.
Broad troughing will cover the eastern half of the CONUS to start the new work week.
300 PM EDT Sat Jun 24 2017 A cold front will approach from the northwest today, and drift into central North Carolina tonight. Another area of convection will develop over the nw Piedmont just ahead of the slow moving sfc cold front. Not overly concerned with large hail as freezing level quite high at 16k ft. Sfc cold front will enter the nw Piedmont early-mid evening, then drift slowly se overnight. Min temps will vary from the mid 60s NW to the low-mid 70s SE. A shower or two will be possible south of Goldsboro-Fayetteville line Sunday morning as the sfc cold front slowly exits the region.
337 PM EDT Sat Jun 24 2017 A cold front near the Virginia, North Carolina border will head southeast overnight.
234 PM EDT Sat Jun 24 2017 Cooler and drier air continues to invade the region in the wake of the cold frontal passage last night. A reinforcing shot of cool air will occur Sunday night as another cold front moves across the area. Models remain in good agreement with a area of Canadian high pressure building southeast toward the region and remaining in control of the sensible weather through midweek. This will lead to fair weather but upper level trough will also dig across the area. This trough will lead to below normal temperatures, as NAEFS and ECMWF ensembles standardized anomalies shows significant signals for below normal temperatures at multiple levels.
Clear skies and light winds overnight will fuel efficient radiational cooling and so in keeping with persistence from observations occurring in previous nights the low temperatures were trended a little below guidance. Dry and warm weather conditions are expected on Sunday with high pressure over the area as the upper ridge axis moves east. Eastern Montana will be positioned under northwest flow aloft on the leading edge of the ridge with rising heights.
306 PM MDT Sat Jun 24 2017 Northwest flow continues across the northern Plains today as the broad trough drifts eastward over the MS valley. Upper ridging is building across the western third of the CONUS. Northwest flow will persist into Sunday along with cooler temps. although warmer than today.
406 PM EDT Sat Jun 24 2017 Latest water vapor imagery loop shows a large dome of upper level high pressure dominating the Florida peninsula with broad troughing further north, sagging over the Ohio valley. The aforementioned broad trough will begin to deepen over the Tennessee valley, dropping a cold front southward.
208 PM MDT Sat Jun 24 2017 Dry cool northwest flow aloft will gradually warm and pick up some Pacific moisture with time as a large high pressure ridge over the great basin moves north into the region.
1215 PM MDT Sat Jun 24 2017 Hardly any change in the forecast as high pressure, to our south, remains in control. The ridge axis of the high reaches from Arizona up through Nevada and into Oregon. Another sunny day in store with a few cumulus expected over the higher terrain but coverage will be minimal. The ridge of high pressure will remain centered in southern Arizona and extending along the California coast on Sunday night, resulting in a mild and dry end to the weekend. Going into the new work week, a broad upper level low will begin to dig into the northwestern CONUS. This will gradually flatten the ridge over the course of a few days with temperatures moderating, though still remaining above normal for this time of year.
129 PM EDT Sat Jun 24 2017 Cooler, less humid, and breezy conditions will be in store for the weekend.
Temperatures are running cooler than yesterday especially across inland areas which are running as many as 9 degrees cooler than yesterday at this time. As of 1 PM, inland area readings ranged from the mid 70s to mid 80s, with even the warmest areas (Fort Hunter Liggett and Parkfield) in the mid to upper 90s, also 8-10 degrees cooler than 24 hours ago. The cooling trend is forecast to persist into Sunday as an upper trough approaches the coast, strengthens the onshore flow and ramps up the marine layer. SFO Bridge Approach. VFR conditions this morning and early afternoon, but the question becomes when will the low clouds return again tonight.
305 PM EDT Sat Jun 24 2017 A large semi-stationary upper trough across central Canada will keep a near daily threat of showers and a few thundestorms across the area through much of the upcoming week. The highest threat of showers should occur during the afternoon and early evening hours. Highs trend cooler per 925-850 mb thermal progs and higher coverage of afternoon clouds.
139 PM EDT Sat Jun 24 2017 Clouds will continue to clear through the afternoon with high pressure moving in.
346 PM EDT Sat Jun 24 2017 Cooler and drier air continues to invade the region in the wake of the cold frontal passage last night. A reinforcing shot of cool air will occur Sunday night as another cold front moves across the area.
Highs will be several degrees cooler throughout. Models have trended toward much better agreement with the evolution of the seasonably strong large scale upper trough over the Eastern U.
343 PM CDT Sat Jun 24 2017 Temps this afternoon are hovering in the mid to upper 60s in the southwest CWA and in the lower 80s in the northeast CWA. The mostly broken to overcast cloud cover in response to the cold front is the responsible party for these below normal temps. The northeast has seen a break in the clouds; thus the higher temps. After the ridge moves away, zonal flow will set in for mid-week, but it will be short lived as an upper level trough tries to push its way south out of western Canada. The end of the work week will see a chance for precip to return as ridging tries to build back into the western CONUS, creating northwest flow again for the area.
146 PM EDT Sat Jun 24 2017 One cold front has passed east, and a secondary cold front will pass tonight.
Upper ridge continues to migrate slowly east through Sunday, stretched across the state by Sunday night. Bears watching as apex of ridge drives across the region.
326 PM CDT Sat Jun 24 2017 Long wave trough positioned over eastern North America will dominate the sensible weather across the region through the short term.
The cold front although a bit hard to detect as it is rather diffused, has pushed south of the CWA, while an elevated 850 mb front was located around the Interstate-30 corridor thus lagging behind. This will lead to overnight temps dipping into the lower to middle 60s across southeast OK, extreme northeast TX and portions of southwest AR, versus upper 60s to lower 70s elsewhere, given the proximity of the elevated front which will maintain moist lower levels.
226 PM MDT Sat Jun 24 2017 An upper level ridge of high pressure will gradually build over the Northern Rockies through the weekend. Slightly unstable northwest flow aloft ahead of the ridge will bring a few showers to the region over north-central areas through early this evening, but mostly dry conditions on Sunday as the ridge axis moves overhead.
/issued 1122 AM CDT Sat Jun 24 2017/ High pressure continues to build into the Mid-South this morning. Dewpoints have dropped into the lower to mid 60s resulting in lower humidity across the area. /issued 333 AM CDT Sat Jun 24 2017/ A cold front has moved through the Midsouth, currently located along a line from Greenwood, MS to Columbus Air Force Base to Jasper, AL. At Walnut Ridge, AR and Pine Bluff, MO, dew points are in the low 60s.
Upper air analysis showed a broad trough over central and northeast CONUS, high over southwest CONUS and Florida, and inverted trough over west Gulf. Upper level trough over northern tier will shift east and allow northwest winds through Sunday.
215 PM CDT Sat Jun 24 2017 High pressure will continue to extend across the area tonight through Sunday, resulting in dry weather with temperatures and humidity levels lower than normal.
Short Term (Now through Sunday night): The change in the weather pattern has begun to evolve this afternoon as the H5 ridge gets pushed westward by the inverted trough moving into the western Gulf. Morning sounding still showed that moisture was held down in the lowest roughly 9000 feet, so shower activity has remained widely scattered. Sunday will bring a more numerous showers as the moisture continues to sweep inland, and begins to infiltrate into the higher levels of the atmosphere.
140 PM EDT Sat Jun 24 2017 A cold front will approach from the northwest today, and drift into central North Carolina tonight. However, with the main surge of cooler area still to the north and west of the area expect high temps on Sunday will generally be in the mid to upper 80s, with even a few 90s in the far s/se.
357 PM EDT Sat Jun 24 2017 High pressure will attempt to build into the mid- Atlantic region for tonight and Sunday.
A surge of drier air behind the cold front is making its way into central Kentucky, and in its wake it has cleared any fog that developed this morning. Surface analysis reveals a cold front has nearly cleared the CWA at this hour, with the Lake Cumberland region just now starting to see a wind shift to the northwest. Cooler and drier air has filtered in behind the front, allowing for some clearing skies this morning. A rather pleasant weekend is in store as cooler and drier air continue to funnel in from the west and northwest.
333 PM EDT Sat Jun 24 2017 Models in pretty good agreement with bringing the cold front into north Georgia this evening and through central Georgia later tonight. This will continue the rest of this afternoon as the cold front moves into the northern part of the CWA. 17 Minor adjustments to late period pops as models indicate gradual moisture return in wake of early week ridging.
Temperatures today are running 3 to 6 degrees warmer than yesterday throughout the valleys and 5 to 9 degrees warmer across the higher terrain under a gorgeous sunny sky. We expect another seasonably cool night that will be just a bit warmer than this morning which will help us achieve another day of similar warming on Sunday (anywhere from 5 to 10 degrees warmer than today).
Upper trough over the East CONUS will begin to surpress persistent ridge over FL.
138 PM EDT Sat Jun 24 2017 A trough of low pressure will remain across the Great Lakes today and tonight. Sunday a cold front will swing east across the region.
Some sfc heating with temps nr 60 BJI/PKD area but will need to see warmer temps to get enough instability for thunder. Challenge will be rain shower placement with passage of upper low and def zone rain band across the northern FA this afternoon. Center of the upper low moving into SE ND this morning with an area of showers heading for the southern Red River valley. Second area of rain expected to move into the Devils Lake basin and northern valley late this morning to early afternoon as band of 700mb Omega slides south with the upper low.
High pressure over the Pacific Northwest will bring unseasonably hot, potentially record breaking temperatures across much of northwestern Oregon and southwestern Washington Saturday and Sunday.
The high resolution HRRR is indc that convection is possible late Sunday morning at KMAF. /issued 156 PM CDT Sat Jun 24 2017/ Today tstms are most favored across the srn CWFA in closer proximity to the cold front and where upslope flow and modestly steep mid level LRs are noted.
406 PM CDT Sat Jun 24 2017 (Tonight and Tomorrow) Cold front has moved south of the area today, with much cooler temperatures today in its wake.
245 PM EDT Sat Jun 24 2017 A cold front moves to our east tonight with high pressure building in. Sunshine should be prevalent on Sunday, but troughing across the Eastern U. should keep temperatures cooler than average in the short term. We will continue with calm weather with the drier northwest flow and slight troughing in the mid levels.
Showers and thunderstorms will be most concentrated over the Coastal Praries through the early evening after a strong morning outflow brought a portion of the cold front through the area. Rain chances should continue into daytime Sunday with the mid-level ridging feature continuing to break down to the west.
156 PM CDT Sat Jun 24 2017 Today tstms are most favored across the srn CWFA in closer proximity to the cold front and where upslope flow and modestly steep mid level LRs are noted.
112 PM EDT Sat Jun 24 2017 Cooler and drier air continues to filter into the area on northwest winds. This will just be the beginning of a stretch of cool dry weather with even cooler and drier air on the way to start the new week.
Another area will be over southeast GA ahead of a cold front with pre-frontal trough. and from the northwest associated with cold front moving into SE GA by late afternoon and evening.
237 PM CDT Sat Jun 24 2017 Weak cold front will quickly progress through the CWA overnight tonight. With a mostly clear sky for most of the area during a majority of the overnight hours and light winds in close proximity to the front, lows tonight should be seasonably chilly as temperatures bottom out in the low to upper 50s. Gosselin Somewhat amplified upper pattern that will be over the CONUS on Sunday night will turn zonal by midweek as trough over the Great Lakes moves off to the east and the ridge over the west coast dampens out.
Cooler temperatures are forecast for today across inland areas with near- coastal areas about the same. Otherwise expect a continued modest cooling trend into Sunday as an upper trough approaches the coast and strengthens the onshore flow. SFO Bridge Approach. VFR conditions this morning and early afternoon, but the question becomes when will the low clouds return again tonight.
142 PM CDT Sat Sep 9 2017 Surface map at 18Z shows a ridge of high pressure situated to our north and west, where it has remained largely unmoved for the past couple of days. Today, though, we are once again enjoying benign weather, with temperatures a little warmer than yesterday and still no rain and only a few clouds.
An upper low circulating over central/eastern South Dakota continues to push scattered mid level clouds into Dickey County at this time. With a cold front pushing through eastern Montana late tonight, and into northwestern ND by mid morning Sunday, winds will shift to the west/northwest. For Sunday, the aforementioned cold front will move west to east, reaching the James River Valley Sunday evening.
342 PM CDT Sat Sep 9 2017 (Tonight and Sunday) Upper level ridging will continue to dominate the weather across West Central Texas, with warm and dry conditions expected.
227 PM EDT Sat Sep 9 2017 High pressure with dry and cool weather dominates remainder of the weekend. Strong Canadian high pressure will continue to feed cool and dry air on northeast breezes through Sunday. Pleasant, below-normal temperatures continue under the influence of high pressure centered over southern Ontario.
590dm high pressure area expands northward from Texas into Colorado and perhaps Wyoming. 590-592dm high pressure center remains centered over Colorado with a 1F to 2F increase in 850mb temperatures.
309 PM CDT Sat Sep 9 2017 An upper level trough currently over the region will slowly push eastward tonight through Sunday morning. The upper level trough will be located over western MN by 18Z Sunday with dry and warm conditions over the CWA. Most of the extended looks warm and dry with an upper ridge in place.
High pressure continues to cover the eastern half of the U.
205 PM CDT Sat Sep 9 2017 Expansive high pressure area over the Great Lakes will keep us quiet for the rest of the weekend.
339 PM EDT Sat Sep 9 2017 The upper trough that brought some unsettled cooler weather will continue is progression off to the east and out to sea through today as a strong high pressure system begins to move over the Great Lakes over the next couple of days. Some cooler air is lingering over the region as a more northerly flow aloft remains through tonight. Forecast overnight temperatures will be slightly warmer than this mornings lows where Flint set a record low temperature of 36 degrees.
Forecast confidence is high: High pressure will be in control for most of the upcoming week.
Tonight and Sunday The latest RAP analysis and satellite/radar imagery show high pressure centered over the central Great Lakes. High pressure will remain over the region. Temps continue to look warmer than last night, though will probably see a few upper 30s over northern Forest, Vilas, and Florence counties. Sunday Night Through Saturday A long period of dry weather looks likely for Wisconsin, with summer like conditions possible by the middle of the week, as an upper ridge builds across the Great Lakes between the westerlies to the north and the upper low that is formed after the hurricane comes ashore and weakens.
116 PM EDT Sat Sep 9 2017 Cool and dry weather is expected this weekend under high pressure.
Otherwise, an increasing pressure gradient is lending to gusty northeast winds, and these may pick up a bit more Sunday afternoon as the pressure gradient increases between high pressure to the north and Hurricane Irma centered well to the southeast.
Scattered low clouds dot the lower valley, with a few high clouds in the mix, but cloud cover will continue on a downward trend. High risk of rip currents will continue along the lower Texas coast today through tonight as long period swells across the western Gulf of Mexico continue to move towards the coastal sections.