Aikyam-Lab/Synoptic-Bench huggingface dataset:
134 PM EDT Tue Aug 22 2017 A strong cold front will move through the region late today and early tonight. Much cooler and drier conditions will return for the second half of the week. But a cooler and drier AM Wednesday. It will also be significantly cooler.
342 PM CDT Tue Aug 22 2017 A closed upper low over northeast Ontario is forecast to move eastward into Quebec during the next 36 hours. Overnight lows will dip into the low 40s north to the upper 40s south. A few of the climatologically cooler locales could see temperatures in the middle 30s. Height falls ahead of that trough, and diurnal heating, should be more than sufficient for showers to redevelop during the late morning and early afternoon on Wednesday. Temperatures will be cooler, however, with highs in the low 60s northeast and over Iron County, WI and near 70 in central Minnesota.
A cold front was pushing south across western Kansas at 0830z, with some stratus clouds developing in its wake. Temperatures are expected to top out in the lower to mid 80s.
657 PM EDT Tue Aug 22 2017 Cold front currently clearing southern TAF with much drier air filtering in this evening, allowing skies to become mostly clear tonight. * Low for cig aob 5000 feet tomorrow afternoon The surface cold front now sliding across Se Mi will exit east of the forecast area between 21 and 23Z. This upper low will track into nrn Quebec on Wednesday, leaving a broad region of low level cyclonic flow across the Great Lakes region.
233 PM MDT Tue Aug 22 2017 With an upper level ridge of high pressure over the region, it will be dry with mostly clear skies tonight through Wednesday morning.
Low temperatures coolest across the east where winds lightest with readings in the low 50s. Breezy southerly winds possible in the mid morning through afternoon with afternoon temperatures in the low to upper 80s.
225 PM EDT Tue Aug 22 2017 High pressure is centered well off the North Carolina coast. A cold front over western Ohio will track across the Mid- Atlantic tonight into Wednesday morning.
The outflow will have moved through the CWA by later this morning and the cold front will pass through St. This combined with north-northwest winds in the wake of the front and the associated advection of cooler/drier air, will result in highs generally 10+ degrees cooler in most areas than yesterday. Clouds will continue to clear across the southern portion of the area this evening as the upper trof deepens. Anomalously strong high pressure center will very slowly migrate from the Upper Midwest to the Great Lakes, eventually into the New England region.
Cooler air will filter into western Kansas over the next 24 hours as an area of high pressure slowly crosses the Central Plains. Lows near 50 not completely out of the question in north central Kansas and if the clouds linger longer, like several models indicate, near the Oklahoma border through the early morning hours then lows in the lower 60s will be reasonable.
336 PM EDT Tue Aug 22 2017 A cold front will bring the potential for scattered showers and thunderstorms late tonight, which may persist into Wednesday morning along the coastal plain.
418 PM EDT Tue Aug 22 2017 Low pressure will approach from the west this evening. The low will track to our north tonight into Wednesday as it brings a cold front across the area. The cooler air behind the front arrives very gradually Wednesday and it will be cooler and less humid Wednesday night with lows mostly in the lower 50s.
247 PM MDT Tue Aug 22 2017 A ridge will remain over the area tonight through Wed. A band of mid and high clouds with a bit of instability will accompany the trough. afternoon flow aloft will be sandwiched between an old open wave over CA/NV and the ridge that will have moved to SE NM and west TX.
339 PM EDT Tue Aug 22 2017 Widespread thunderstorms will occur ahead of a cold front late this afternoon into this evening. Quieter, cooler and drier weather conditions return for Wednesday and through the rest of the week. Cold front moves ewd across the area overnight and should start clearing trend and westerly wind shift areawide by 04Z or so. Isold additional showers are possible Wednesday as trailing upper level trough makes its way ewd across the North Country. Will be noticeably drier with dewpoints falling into the low-mid 50s by Wednesday morning. Likewise, temperatures on Wednesday will be about 10 degrees cooler than Tue, much closer to seasonal normals (mid-upr 70s).
307 PM MDT Tue Aug 22 2017 A ridge will remain over the area tonight through Wed. A band of mid and high clouds with a bit of instability will accompany the trough. afternoon flow aloft will be sandwiched between an old open wave over CA/NV and the ridge that will have moved to SE NM and west TX.
An upper level trough will move north into southern Utah this morning, then track slowly north across the region through tonight. Somewhat drier air will follow this trough, with this drier air covering the entire area by the end of the week.
356 PM CDT Tue Aug 22 2017 Storms are increasing in coverage and intensity this afternoon along the southward moving cold front extending from south of Clovis to near Childress.
303 PM CDT Tue Aug 22 2017 The chances of showers and thunderstorms will ramp up late this afternoon and into tonight as a cold front currently near the Kansas/Oklahoma border moves into the region. The cold front is expected to be near the Red River by early Wednesday morning with the chances of showers and diminishing.
Warm and dry conditions continue across the region as high pressure remains firmly entrenched. Temperatures will be the warmest they have been in a while with temperatures in the low to mid 90s possible.
/Issued 410 AM CDT Tue Aug 22 2017/ Cold front is moving into northwest part of forecast area at this time, with continued southward movement expected today. Threat for showers and thunderstorms will continue for the next several days, with western and northwestern sections being favored, as northwest flow aloft will provide opportunities for convection to move in from the higher terrain, while southeast low-level flow will keep moisture and instability maximized over western sections.
310 PM EDT Tue Aug 22 2017 The surface cold front now sliding across Se Mi will exit east of the forecast area between 21 and 23Z. This upper low will track into nrn Quebec on Wednesday, leaving a broad region of low level cyclonic flow across the Great Lakes region.
Low end chance POPS for any short lived -TSRA tomorrow during the day with the highest probs occurring across the coastal and second tier counties.
256 PM CDT Tue Aug 22 2017 A cold front will continue to push south through the Mid-South tonight. As a result, northeasterly surface winds will keep the drier air in place making conditions feel very pleasant with highs in the lower to mid 80s. A cold front will move through the region tonight.
307 PM EDT Tue Aug 22 2017 WV imagery and RAP analysis indicated a mid/upper level trough from the srn portion of Hudson Bay through nw Ontario to the Upper Mississippi Valley. At the surface, a cold front extended through the cntrl U. from low pressure over ern Lake Superior. Even with lingering clouds and wind, temps over the interior west should drop off into the mid and upper 40s while readings in the lower to mid 50s prevail closer to the Great Lakes and over the east.
Temperatures will be on the cool side today, with highs ranging from the lower 60s over the tip of the Minnesota Arrowhead, into the upper 60s and lower 70s further inland. Temperatures over northern Minnesota could drop to as low as the lower 40s in some spots.
Upper level low continues to spin off the central California coast this afternoon and will linger through Wednesday.
Latest water vapor imagery shows an upper low currently over northern Saskatchewan. A backdoor cold front is associated with this upper low and will reside over southern Manitoba early Wednesday morning. The upper low mentioned in the short term period will continue to move southeast Wednesday, shifting into eastern North Dakota and pushing the backdoor cold front mentioned above across and through the far north central ND.
With a ridge to our west, we'll have favorable northwest flow tomorrow, so where the front ends up will be important.
Scattered showers/thunderstorms will likely develop along approaching cold front this afternoon across northeast Oklahoma/northwest Arkansas. VFR conditions expected Wednesday morning across the north behind cold front as drier air-mass filters into the region. This boundary should stall over the next few hours and will likely provide the focus for additional thunderstorm development this afternoon as a cold front moves into northeast Oklahoma.
1154 AM MDT Tue Aug 22 2017 Stratus has developed in southerly upslope flow along the Cheyenne Ridge and southern Laramie Range, but so far no fog has been observed in these areas. An upper level ridge will build over the western CONUS today, and over the Rockies by Wednesday. Temperatures should increase a few degrees each day as the ridge builds, and it looks like precip chances will increase as well. For today, the dry airmass evident on current water vapor imagery will remain overhead, although some moisture to our southwest may reach the higher mountain peaks of south-central WY.
244 PM CDT Tue Aug 22 2017 Cooler and drier air will continue to filter southeast into our area tonight bringing some very pleasant weather to the region through the remainder of the work week. The combination of a clear sky and light wind should allow temperatures to drop into the low 50s north to the upper 50s south of I-70. High pressure will be centered to our west on Wednesday bringing plenty of sunshine to the area along with afternoon temperatures close to the 80 degree mark.
133 PM CDT Tue Aug 22 2017 A cold front trailing the showers and storms that went through the Ozarks earlier today, will make its way through the region this evening and into the early overnight hours. Behind the front, a cooler and drier airmass will make its way into the area overnight. The overall pattern will transition from northwesterly flow over a ridge over the western U.
408 PM EDT Tue Aug 22 2017 Widespread thunderstorms will occur ahead of a cold front late this afternoon into this evening. Quieter, cooler and drier weather conditions return for Wednesday and through the rest of the week. Cold front moves ewd across the area overnight and should start clearing trend and westerly wind shift areawide by 04Z or so. Isold additional showers are possible Wednesday as trailing upper level trough makes its way ewd across the North Country. Will be noticeably drier with dewpoints falling into the low-mid 50s by Wednesday morning. Likewise, temperatures on Wednesday will be about 10 degrees cooler than Tue, much closer to seasonal normals (mid-upr 70s).
450 PM EDT Tue Aug 22 2017 A cold front is presently pushing towards the Ohio river with some showers and thunderstorms developing just ahead of this feature. This will lead to a drier Wednesday along with much cooler conditions.
342 PM CDT Tue Aug 22 2017 Cold front draped across nrn AR/OK, associated with the upper trof over SE Canada, continues to make its way swd this aftn. Line of storms has developed along a swd-moving outflow boundary, ahead of the cold front.
247 PM CDT Tue Aug 22 2017 Current surface analysis places high pressure over the northern and central plains. Upper level analysis places ridge over the Rockies with trough over the midwest. high meanders off to the east with trough/low developing and deepening to the east of the Rockies, resulting in winds shifting south/southeasterly.
Water vapor showing an upper ridge moving over the northern Rockies and drifting east, while a large cut-off low over the Gulf of alaska is pushing onshore near the Queen Charlotte Islands. These low pressure systems are having a little more strength as we are heading toward Fall and more moisture is flowing through the upper ridges as they are weakening a bit too. The clear skies this afternoon will remain mostly clear through Wednesday as the upper ridge drifts in our direction.
354 PM EDT Tue Aug 22 2017 A cold front will move across the area this evening bringing in a cooler airmass that will stick around for several days.
1205 PM CDT Tue Aug 22 2017 A cold front has passed through the area overnight, and skies have mostly cleared in its wake. Winds will remain northerly through the day today as high pressure builds into the area. Lows should dip into the low to mid 50s, and I wouldn't be surprised if a few spots even make it into the 40s! Dry air should preclude fog development despite relatively light winds and clear skies.
310 PM CDT Tue Aug 22 2017 A longwave TROF existed over eastern North America this afternoon with a longwave RIDGE over western North America, resulting in NW flow aloft for our region. A surface cold front has nearly cleared the forecast area, now over southern IL and southeastern MO and continues to chug southeastward.
119 PM EDT Tue Aug 22 2017 A strong cold front will move through the region late today and early tonight. Much cooler and drier conditions will return for the second half of the week. But a cooler and drier AM Wednesday. It will also be significantly cooler.
Mostly clear skies prevail across the TN Valley this morning, as high pressure remains anchored over the region. Temperatures have warmed into the lower 80s, as of 9 am, under the plentiful sunshine. However, a broad upper trough will push the upper ridge east of the area and heights falls may aid in some of the convection. Temperatures are expected to warm into the lower 90s and heat indices will approach and exceed 100 degrees by early afternoon. As the cold front encroaches tonight, scattered showers and thunderstorms will spread into the TN Valley. As the front pushes through the forecast area, expect showers/storms to taper off Wednesday night as drier and cooler air begins to filter in.
Expect boundaries out ahead of the main cold front to initiate new storms as we heat up. A strong cold front will bring a line or a few broken lines of showers and storms to the region today. A cool, dry pattern will start Wed in the upper troughing behind the front.
408 PM EDT Tue Aug 22 2017 A cold front pushing through the Ohio Valley will bring organized showers and thunderstorms this afternoon, then drier and unseasonably cool air filters into the area for the rest of the workweek. Cold front appears to be just entering far northwest Ohio. A fairly potent cold front will progress through the area early in the short term period, bringing an end to the seasonably warm and humid conditions that had settled in the local area. With the increasingly clear skies and northwest flow, expect lows to range from the mid 50s in the NW to the lower 60s in the SE. Lows on Wednesday night will dip into the lower to mid 50s area-wide.
Tomorrow a cold front will approach the forecast area and gradually introduce a westerly component to the upper level winds, drying out the midlevels and stabilizing the atmosphere.
Deep layer ridging is in place over the area with very light winds throughout the troposphere.
Otherwise, at 500mb, northwestern flow will remain through the period, as a larger trough over much of eastern Canada and the northeastern quarter of the U.
and Wednesday A cold front was moving through eastern WI early this morning, and a stronger secondary cold front was ushering in a much cooler and less humid air mass over northwest and far north central WI. High temperatures should range from the upper 60s northwest to the lower to middle 70s elsewhere. Models suggest that a weak surface trof may sag south through the area during the day, but with dew points in the 40s and little or no instability, will keep a dry forecast intact.
The trailing cold front will begin to move south across the Texas panhandle and Oklahoma this afternoon and push into the northern Big Country later tonight. A weak upper level ridge, currently situated over the Big Bend region, will continue to slowly drift west allowing for weak northwest flow to develop across the area. With this weak northerly flow and the approaching cold front, expect thunderstorm development and coverage to increase into the evening hours across the Big Country. Temperatures will be cooler tomorrow with the increase in cloud coverage and with wind switching to the north behind the front.
206 PM CDT Tue Aug 22 2017 137 PM CDT Drier air continues to spread southeastward into the forecast area on breezy northwest winds as a cold front continues southeast. MDB 206 PM CDT A seasonably strong upper trough currently setting up over Ontario and much of the Great Lakes will allow a strong northwest flow pattern aloft to persist across much of the area through the end of the week.
1115 AM MDT Tue Aug 22 2017 Cold front has pushed through all of the southeast plains early this morning with isolated thunderstorms still ongoing along the Raton Ridge region. monsoon moisture and weak disturbances continue to circulate within the upper ridge axis aloft across most of southern CO where precipitable waters from the AMSU SSM/I show values ranging from 100-130% of normal with highest values across the southern and southeast portions of the area. however surface heating in combination with weak disturbances rotating northward within the upper ridge across the mountains will trigger another round of scattered to numerous showers and thunderstorms over the mountains. Locally heavy rain will be the primary storm threats given light flow aloft within the upper ridge.
340 PM EDT Tue Aug 22 2017 A cold front is presently pushing towards the Ohio river with some showers and thunderstorms developing just ahead of this feature. This will lead to a drier Wednesday along with much cooler conditions. A cold front will swing south across eastern Kentucky through this evening and tonight and bring periods of showers and thunderstorms to the area.
Cold front continues to push south, located mainly along highway 54, with some lingering post frontal stratus. Ketcham A cold front over northwestern Kansas, will continue pushing southward into southern Kansas this morning, then out of south- central/southeast Kansas early this afternoon.
/issued 1022 AM CDT Tue Aug 22 2017/ A cold front currently stretches from south of Chicago, to just north of St. Currently, a cold front extends from eastern Wisconsin through southeast Nebraska and into eastern Colorado. This cold front should drop south today reaching into southern Missouri by late this afternoon. Temperatures will be on the hot side with highs in the low to mid 90s. The cold front will move into the forecast area tonight with more thunderstorms expected. By Wednesday, the cold front will move through north Mississippi in the morning with more thunderstorms possible. Cooler air will start to move into the forecast area so temperatures will not be as warm with highs in the low to mid 80s. High pressure will build into the region by Wednesday night bringing a lengthy period of dry weather for the region.
Afternoon highs will reach the lower to mid 90s across the region, with heat indicies approaching 100F this afternoon.
Cold front will continue to move south, and with it also brings storm chances (beginning this afternoon and lasting through the forecast period) and the chance of MVFR or even areas of IFR ceilings in the morning behind the front.
335 PM CDT Tue Aug 22 2017 We've already got storms develop across the southern Texas Panhandles along a southward moving cold front. This will allow storms to develop and move south- southeast along the higher terrain in SE Colorado and NE New Mexico Wednesday evening.
1219 PM CDT Tue Aug 22 2017 As a cold front pushes through eastern Nebraska and western Iowa, it is ushering out showers and thunderstorms and bringing in a drier airmass. Subjective 00Z upper-air analysis indicates broad upper- level trough over the upper Midwest, accompanied by an 80-95kt upper- level jet streak from the eastern Dakotas into northern ON. An 850mb low was centered on the northern ON/MB border, with a trailing cold front through MN/NE/western KS, and with moisture pooled ahead of the front.
Wed night an upper level ridge will be over the area with enough moisture over the area for isold to sct showers/tstms. The upper ridge rebuilds over the area on Fri behind that upper wave, and Fri looks drier, although there should still be isold to sct pcpn mainly over the higher trrn. On Sat the upper ridge will be centered over the Great Basin, with north to northwest flow aloft over southern CO. The upper ridge remain centered over the western states on Sun.
An inland warming trend is likely late in the week and into the upcoming weekend due to strengthening high pressure.
Cooler air will ooze down from the north, with 925 mb temperatures falling into the 10 to 12 degree range by Wednesday afternoon. Otherwise look for cooler temperatures with highs in the lower to mid 70s.
This basically means 1)showers and thunderstorm chances will remain and 2) cooler than average temperatures will continue.
Weak upper troughiness to remain over the E CONUS. Upper troughiness to remain over the E CONUS.
However, continued swell periods of 8 secs and elevated swells of 3 to 5 feet will keep the high risk of rip currents going through the early evening. Farther west, slightly drier conditions (although warmer temperatures) will lead to heat index values of 105-109.
On Saturday, a weak surface boundary drops across the region as low pressure tracks northeastward across the Great Lakes.
It's likely these storms will have generated a mesoscale convective vort (MCV) max, which may phase with a low amplitude trof axis. By this evening, most of the storms will have ended, with the midlevel trof axis and MCV having moved off to the east. A weak cold front will push south and may serve as a focus for a few remaining showers and storms over north MS this evening.
630 AM CDT Fri Aug 11 2017 The low stratus will gradually shift east and south of the local area this afternoon as the responsible low pressure system treks eastward.
817 AM EDT Fri Aug 11 2017 Weak upper low over S FL and tropical wave along the E coast of FL this morning creating unsettled weather in the region. In the upper levels, broad troughing extends from the western Great Lakes region southward through the Mississippi River Valley. Farther south, ridging extends from Bermuda west-southwestward over the Bahamas. A mid-level inverted trough extends from the western Cuba, northeastward over southern Florida and will help keep abundant moisture over the region. Farther to the west, ridging extends from Texas into the central Gulf of Mexico. On the surface, subtropical high pressure near Bermuda ridges southwest over the Bahamas. The other surface feature is an area of high pressure located in the Gulf of Mexico.
This activity will diminish shortly as much drier mid- level air arrives as high pressure continues to settle in from the north. The remainder of the forecast period will feature the area of high pressure bringing beautiful mid August weather to the state with highs in the mid-70s to low 80s today and overnight lows in the 50s.
Showers should fall apart by the time they push off the higher terrain onto the central Plains. In response, marginal height falls will occur near the MT/WY border sparking showers and thunderstorms during the late afternoon and evening, mainly along the higher terrain along the MT/Wy border and east through Sheridan, Powder River, and Carter counties.
605 AM MDT Fri Aug 11 2017 Patchy fog is not as extensive as initially expected early this morning due to the more extensive coverage of the lower stratus that formed overnight in the wake of the exiting showers. Northwest flow remains in place aloft across the central Rockies and High Plains through Saturday with several impulses expected to move east of the Rockies and across the high plains over the next couple of days.