Aikyam-Lab/Synoptic-Bench huggingface dataset:
Expect the lowest temps of the season so far tonight over interior areas around Glades and Hendry counties with morning lows near 40. Generally dry and benign weather will continue on Monday and during the next couple of days across South Florida with broad high pressure well in control of the region.
842 PM MST Sun Nov 20 2016 Upper ridging was relaxing over the northern Rockies and allowing an upper trough to advance into the Great Basin. Clouds were increasing over western and central on the front side of the trough. Better mixing today has promoted warmer temperatures with a few locations approaching 60 degrees. Monday the upstream energy moves into central Montana in a couple of weak pulses slowly moving a weak upper level trough into the area by evening. Better chance for shower activity in the evening for the lower elevations as downslope weakens for a while and upper level trough is moving through the area. Models show best chances for moisture over the higher terrain but expect any amounts to be light and not expecting more than an inch or 2 of snow above 6000 feet.
1011 PM EST Sun Nov 20 2016 Cool high pressure will prevail into the middle of the week.
611 PM EST Sun Nov 20 2016 Cool and dry high pressure continues to build into the Ohio Valley today, with temps really struggling in the face of the low-level thermal trof. North-south oriented ridge will settle roughly overhead tonight, and winds should drop off for favorable radiational cooling conditions. Expect min temps a few degrees cooler than this morning, with more of a ridge/valley spread. Below normal temps will continue on Monday, but should still be about 5 degrees warmer than this afternoon. Progressive pattern will prevail for most of the week, keeping temps just barely on the low side of climo.
/issued 322 PM CST Sun Nov 20 2016/ The upper level ridge responsible for our gorgeous blue skies and warmer temperatures today will begin to break down on Monday, allowing the approach of an upper level trough. Models are in fairly good agreement on the placement and strength of this trough by the end of the forecast period, with the center over central AZ. Lift associated with the upper trough will pass over the area Monday evening.
An upper level trough and Pacific storm system will move into the central plains to start off the workweek.
549 PM CST Sun Nov 20 2016 An elevated warm frontal boundary will move east across southern Manitoba into northwest Ontario, bringing broken to overcast mid- level clouds across northern Minnesota into northwest Wisconsin this evening. A mix of sun and clouds to start off Monday, but clouds will gradually be on the increase from west to east associated with a stronger warm frontal zone pushing northeast across the northern plains into the Canadian Prairie associated with a developing low in southern Saskatchewan.
Upper level trough currently located off the coast will move across the region late tonight into Mon. A brief period of dry weather Mon night into Tue before the next cold front moves through Tue night with rain and mountain snow.
443 PM MST Sun Nov 20 2016 Upper ridge will dominate the weather today and tonight with light winds, scattered cirrus and mild temperatures in the upper 50s to middle 60s this afternoon. The next feature to affect the forecast area is the upper trough currently moving onshore along the West Coast as seen in weather vapor imagery.
Late evening surface analysis depicts a sprawling dome of surface ridging extending from Hudson Bay Canada to the lower Mississippi River Valley. a deep cyclone is spinning over New England, which is producing a deep and dry northwesterly flow aloft. This should allow most locations to fall to near freezing by sunrise, and thus we left the Freeze Warning in place for all but coastal locations, with St. Near shore seas of 3-5 feet are expected overnight, with winds and seas continuing to gradually diminish on Monday as high pressure builds into the southeastern states.
Upper ridge will dominate the weather today and tonight with light winds, scattered cirrus and mild temperatures in the upper 50s to middle 60s this afternoon. The next feature to affect the forecast area is the upper trough currently moving onshore along the West Coast as seen in weather vapor imagery.
503 PM CST Sun Nov 20 2016 At h5 deep trough along the west coast with strong ridge over the Rockies and strong closed low over the northeast CONUS. Dry conditions continue as an upper level ridge continues to build over the central US. Recent snowpack combined with warmer temperatures aloft could allow some patchy fog to develop in this location. Overnight lows remain below guidance as recent snowfall will continue to keep temperatures cooler than anticipated. Lows drop into the low to mid 20s. Despite the increasing clouds, temperatures will still rise into the low 50s. Nam is colder and the availability of cooler air with this system will determine precipitation type.
Winds will drop to less than 5 KT at all terminals after sunset and remain light tomorrow as high pressure dominates the area.
Today a broad mid-level ridge was stretched across the central U. At the surface, a decent pressure gradient was present over the area as the CWA was wedged between high pressure to the east and low pressure over the High Plains. As a result, southeasterly winds were occasionally gusting upwards of 20-25mph, which provided enough warm-air advection to boost afternoon high temperatures closer to the seasonal normals in the low/mid 50s. This cloud cover combined with light southeasterly winds will support overnight temperatures being a bit warmer than the last few nights, with low temperatures in the upper 20s to low 30s. Models show this mid- level trough continuing to deepen as it advances across the western U. This advancing trough will help to push the area of low pressure eastward toward the area with mid-level cloud cover increasing through the daytime hours.
518 PM CST Sun Nov 20 2016 Rather progressive pattern progged over the next several days with a series of longwave trofs. upper ridge over the cntrl U. begins to break down in response to lead longwave trof pushing ashore over the west coast.
1000 PM EST Sun Nov 20 2016 Upper level low pressure over New England is gradually moving away from the Ohio Valley.
The freezing level was at 14,400 feet, with the -20C level at 23,700 feet. /issued 308 PM CST Sun Nov 20 2016/ Post frontal air mass is still moving into the region with high pressure extending from Canada to the Gulf of Mexico.
May very well see this lift along ridges Wednesday morning as the near-surface inversion mixes out. Given the lack of precipitation expected Wednesday, high temperatures will likely top out a bit warmer generally in the upper 80s to near 90.
135 PM PDT TUE JUL 12 2016 High pressure will rebuild over the region this week bringing a warming trend with dry conditions and lighter winds. An onshore flow is still hanging on across central California this afternoon and will likely continue through this evening between an upper level trough over the Pacific Northwest and a ridge of high pressure aloft over the Desert Southwest. A significant warm up will occur over the central California interior during the next few days as the high pressure ridge over the Desert Southwest builds northwestward.
The general trend is expected to be for the highest coverage to shift across Glades, Hendry, and Collier as well as far western portions of Broward and Miami-Dade. Ambient temperatures will remain in the low 90s for maxima and mid- 70s to low 80s for minima.
A few showers are possible this evening as an upper trough exits the area.
212 PM CDT TUE JUL 12 2016 The main story for this forecast package will continue to be the heat that could stick around the next several days as an upper ridge remains parked over the region. At the surface, an area of low pressure extends south into west TX and looks to remain in place through the week.
A progressive short wave trough is now impinging on western Idaho per water vapor, and will continue a net easterly track through the northern Rockies region overnight tonight.
509 PM EDT TUE JUL 12 2016 Update We'll have a few opportunities for rain during the next 36 hours as several waves of low pressure move across Lower Michigan. Cooler and drier air will move over Lower Michigan late in the week and the weekend. Radar is beginning to light up as a trough moves across the cwa.
148 PM EDT TUE JUL 12 2016 High pressure will continue to influence the region's weather through Wednesday with warming temperatures and increasing humidity.
This seems reasonable with upper trough axis running north to south down through our area. Weak mid level trough axis extends down interstate 65 at midday but is ill defined.
340 PM CDT TUE JUL 12 2016 This afternoon a frontal boundary remained nearly stationary from the Oklahoma Texas Panhandles through the Central Plains and the Upper Midwest to a closed low positioned over South Central Canada.
359 PM CDT TUE JUL 12 2016 Windy conditions across the region this afternoon as pressure gradient is tight with the low pressure across southern Canada.
200 PM EDT TUE JUL 12 2016 Bermuda high pressure will keep warm and moist southerly flow over the region through the week.
418 PM EDT TUE JUL 12 2016 A warm front slowly lifts across the area tonight through Wednesday night.
325 PM CDT TUE JUL 12 2016 A vigorous mid/upper trough was situated near the Canadian border over southern Manitoba and southwest Ontario. South of trough. Storms developing across central KS may dive SSE across much of the area again on Wed night as the low lvl moisture transport is progged to ramp up once again.
We'll have a few opportunities for rain during the next 36 hours as several waves of low pressure move across Lower Michigan. Cooler and drier air will move over Lower Michigan late in the week and the weekend. Radar is beginning to light up as a trough moves across the cwa.
Temperatures are running up to 5 degrees warmer than yesterday at some locations, and about the same as yesterday at other areas. This will continue to bring dry conditions and gusty west winds to the higher terrain. A lee side trough will set-up helping to produce some downsloping during the day.
An are of low pressure will slide westward along the KS/OK border this evening reaching far southwestern Kansas by sunrise tomorrow. Meanwhile, an associated warm front will shift from central Kansas tonight into western Kansas by sunrise tomorrow.
405 PM EDT TUE JUL 12 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.
High pressure will slowly build into the Southwest bringing gradually warmer temperatures and continued dry conditions through the weekend.
340 PM CDT TUE JUL 12 2016 Showers and tstms have sustained themselves across southern IL this afternoon a bit more than expected, as a mid/upper low in the vicinity damps out.
146 PM EDT TUE JUL 12 2016 A warm front slowly lifts through the area today through Wednesday night.
/issued 1119 AM CDT TUE JUL 12 2016/ A weakening upper trough stretches from Southwest Kentucky into Mississippi this morning. /issued 310 AM CDT TUE JUL 12 2016/ Current water vapor satellite imagery depicts a weak upper level low over Northeastern Arkansas. This low is less organized than it once was as it continues to shift east. Closer to the surface, a broad area of high pressure centered over the Atlantic is resulting in southerly flow and warm overnight temperatures. Drier conditions will prevail as the day continues and the weak upper low continues to lift out of the area. There will be a lull in active weather on Wednesday as zonal flow aloft sets up and high pressure filters in at the surface.
305 PM EDT TUE JUL 12 2016 Under mostly sunny skies and light east to southeast winds, temperatures are in the lower 90s along most of the Florida Keys. Surface wise, a broad Western Atlantic ridge extends along the gulf coast and Southeast United States.
355 PM CDT TUE JUL 12 2016 Cold upper low creating instability showers with isolated thunderstorms across much of the north half of the region this afternoon. The isolated thunderstorms generally across the north central where limited instability is focused ahead of a weak trough. on Wednesday will watch the upper low slowly lose its influence on the region with winds much diminished over today.
233 PM MDT TUE JUL 12 2016 Upper level analysis has closed low over southern Manatoba with westerly zonal flow across the Northern Plains. At the surface, low pressure was located across central Manatoba, with weak surface trof extending south into central South Dakota. Closed low over southern Canada will continue to slowly move east, with mainly zonal flow remaining over the Northern Plains. Upper closed low lifts through the Hudson Bay area with weak ridging over the western CONUS. West to northwest upper flow remains across the area, with slightly cooler temperatures expected. Temperatures will be a few degrees cooler than today, in the mid 70s to mid 80s.
/Issued 340 PM CDT TUE JUL 12 2016/ This afternoon a frontal boundary remained nearly stationary from the Oklahoma Texas Panhandles through the Central Plains and the Upper Midwest to a closed low positioned over South Central Canada.
Renewed upper level troughing along the West Coast towards the end of the week will result in somewhat cooler temperatures inland for the upcoming weekend.
339 PM EDT TUE JUL 12 2016 Southwest flow around high pressure over the Atlantic gradually increases humidity and warmth through the end of the week along chances for showers and thunderstorms.
Upper ridge will edge a bit northward over the next few days.
Should see gradual increase in coverage trough the heat of the day, then waning this evening.
Low pressure may bring cooler conditions and gusty winds for the weekend. Stable west flow with high pressure over the Desert Southwest will keep the region hot and dry the next couple days.
418 PM EDT TUE JUL 12 2016 An upper ridge of high pressure to our south will build north into our region through Wednesday. The upper ridge will weaken some late week into the weekend, as a weak upper trough and surface boundary or two move into the region, along with some increase in moisture. Upper ridge centered to our SE over the Bahamas, with ridge axis extending northwest across South Carolina. so overall forcing appears weak with some ridging aloft.
High pressure will persist through the end of the week. However persistence is working well lately so expected some good sunshine to break free by late morning with coastal temperatures still reaching the low to mid 60s.
Dry and a little warmer Wednesday on through the weekend with high temperatures in the upper 80s to low 90s and overnight lows in the upper 40s to mid 50s.
SHORT TERM (Tonight through Wednesday Night): A weak mid-upper level low continues to move inland into Mexico south of the local area. However, cloud cover moving northward on the eastern side of the low continues to erode as it approaches Deep South Texas, so no precip is expected from this feature as we remain on its "fringe". A relative weakness in the ridging stays in place over the area, however, so some high cloudiness may drift in from an upstream low over the Lower Mississippi Valley.
205 PM MDT TUE JUL 12 2016 Dry conditions will prevail this afternoon with increasing cloudiness this afternoon and evening in advance of a fast moving short wave followed by a warm front. CAPE values will increase through the afternoon to near 2100 J/Kg as the warm front approaches with bulk shear at 30kt to 50kt (RAP), and DCAPE in the 400 J/Kg to 1000 J/Kg range.
347 PM CDT TUE JUL 12 2016 A weak mid-level trough over the Mid-South along with deep southwest flow is helping the isolated/scattered convection persist and move inland this afternoon.
603 PM EDT TUE JUL 12 2016 Upper level high pressure to our south will continue to ridge in to the Southeast through mid-week. Late this week, the upper ridge will weaken and shift to our east as a broad upper trough moves over the eastern US. The upper level ridge over the Southeast will generally inhibit convection over our area the rest of today.
The 12z KBMX sounding this morning reflected the increased surface ridging, and a more pronounced cap at 850MB as compared to the sounding from 12 hours ago.
540 PM EDT TUE JUL 12 2016 Bermuda high pressure will keep warm and moist southerly flow over the region through the week.
Visible satellite is starting to show CU popping up over the southeast ridges, but with the low-levels being dry locally, and the ridge axis being directly overhead, mostly sunny skies will continue this afternoon.
142 PM MDT TUE JUL 12 2016 Dry conditions will prevail this afternoon with increasing cloudiness this afternoon and evening in advance of a fast moving short wave followed by a warm front. CAPE values will increase through the afternoon to near 2100 J/Kg as the warm front approaches with bulk shear at 30kt to 50kt (RAP), and DCAPE in the 400 J/Kg to 1000 J/Kg range.
Leading edge of convection out ahead of this cold front has moved to approximately a Iron River to Big Bay line. Low pressure over south central Canada will lift through northern Ontario late tonight and Wednesday. A trough crosses the Upper Great Lakes today into this evening with a secondary trough to follow on Wednesday as the low lifts through Ontario to Hudson Bay.
Upper level trough moving across the Pacific northwest today.
Temperatures are expected to be a few degrees warmer under the persistent warm ridging over the region.
305 PM EDT TUE JUL 12 2016 High pressure will continue to influence the region's weather through Wednesday with warming temperatures and increasing moisture.
146 PM EDT Tue Jul 12 2016 High pressure over the eastern seaboard will continue to dominate the North Country's weather through the first half of Wednesday.
140 PM EDT TUE JUL 12 2016 A weak surface boundary over the northern Midlands of SC will shift a little farther north into NC today, while an upper ridge of high pressure to our south builds north into our region through Wednesday. The upper ridge will weaken some late week into the weekend, as a weak upper trough and surface boundary or two move into the region, along with some increase in moisture. Upper ridge centered to our SE over the Bahamas, with ridge axis extending northwest across South Carolina. so overall forcing appears weak with some ridging aloft.
A weak cold front has moved passed all TAF sites with northerly winds in its wake. /Issued 448 AM CDT TUE JUL 12 2016/ A slowly encroaching cold front will help to hold high temperatures a few degrees cooler than yesterday while still being able to reach into the 90s to 105. By Wednesday, the ridge returns in full force and that means it will be another sweltering day with high temperatures in the 101 to 109 range. With southwest winds, the high temperature at the base of Palo Duro Canyon could easily reach 110 with 115 not out of the question.
220 PM EDT TUE JUL 12 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.
339 PM EDT TUE JUL 12 2016 A trough of low pressure will strengthen across the interior Carolinas through the week as high pressure remains southeast over the Atlantic. A deep layer of high pressure, centered southeast over the Atlantic, will continue across the region through the rest of the work week.
A more typical summertime pattern for the area this week as the broad upper ridge over the region continues while the weak relative high center moves from the Bahamas today over the state then into the Eastern Gulf late Wednesday.
A weak cold front is pushing across KPVW and approaching KLBB. /issued 228 AM CDT TUE JUL 12 2016/ Models prog a slight expansion of the upper ridge northeastward with slight strengthening over the forecast area. The complication of the boundary suggests temperatures on the caprock will be a few degrees cooler than yesterday.
246 PM CDT TUE JUL 12 2016 Water vapor imagery and RAP H5 analysis indicated an area of high pressure to our east and west this afternoon; one located over W TX/Nrn Mexico and the other over the Bahamas. At the sfc, high pressure was parked over Ern AL/Wrn GA to our SE, with a cluster of thunderstorms on the western periphery of the ridge surging northward, encompassing much of Srn AL.
A large upper ridge over the sern FL coast will keep the chc of pcpn across much of the sern state to a minimum today.
343 PM CDT TUE JUL 12 2016 Another hot and humid afternoon is well underway for Southeast Texas where afternoon temperatures have risen into the low 90s along the coast and mid to upper 90s inland. High temperatures on Wednesday are forecast to rise into the low 90s along the coast, with mid to upper 90s possible inland under partly cloudy skies. The region will remain on the eastern periphery of a 594-597 decameter upper ridge through the end of the week, with little to no overall pattern change resulting in a persistent forecast across the region. Expect afternoon temperatures to top out in the low 90s along the coast with mid to possibly upper 90s at inland locations and overnight lows in the upper 70s to low 80s through the weekend.
Little change from day to day as broad high pressure remains to our south and pieces of energy bring some precipitation to the northern Rockies.
The surface cold front that contributed to development of severe thunderstorms yesterday has not entirely exited the area as of yet, and could fuel a few thunderstorms near the southeastern border of the forecast area this afternoon. Temperatures, although cooler, will still top out around near normal values in the low to mid 80s, under mostly sunny skies and breezy westerly winds.
259 PM PDT TUE JUL 12 2016 A trough of low pressure in mid levels will continue to lift out to the northeast this afternoon through this evening as high pressure builds into the Pacific Northwest. Extensive cloud cover across Coos and Douglas Counties from this morning has been slow to give way this afternoon, but ridging building in from the southwest is diminishing cloud cover in other areas. Tonight the building high will result in light northeast winds across the west side ridges followed by a jump in high temperatures of 5 to 10 degrees for tomorrow afternoon as compared to today.
330 PM CDT TUE JUL 12 2016 Water vapor imagery showing upper wave rotating north into central Canada around an upper low over southern Saskatchewan, with another wave forming to its west. The more active period should come in the late evening to overnight hours as the low level jet increases resulting in decent convergence and isentropic lift around 850mb.
415 PM CST Tue Dec 6 2016 Clouds, blustery winds and occasional flurries will be the norm over the next 24 hours as a deep cyclone slowly lifts east-northeast of the area. The center of the low pressure responsible for the change in weather today is located near the US/Canadian border just to the west of International Falls. The low will slowly slide to the east- northeast tonight and by sunrise tomorrow, the system will be just north of Lake Superior.
828 PM CST Tue Dec 6 2016 Weak frontal boundary is moving off the coast this evening with 8 PM temperatures ranging from the low to mid 50s inland to near 60 at the coast. Under mostly cloudy skies, slightly cooler temperatures and possible patchy fog can be expected overnight. Moisture trapped under this post-frontal inversion may saturate the lower 1 km enough to allow LIFR decks to form during the pre- dawn hours. More model differences regarding potential for sct precip late Wed & Wed night ahead of the approaching strong cold front. Much of the area will see freezing temps Fri morning and Freeze Warnings will be needed for locations that haven't seen one yet.