Aikyam-Lab/Synoptic-Bench huggingface dataset:
Mostly clear skies and light wind will allow temperatures to fall well into the 50s over most of the area with readings as low as the upper 40s in the normally cooler locations of north central and east central MS. Highs are expected to reach the lower 80s as most places by Friday afternoon under mostly sunny skies.
333 PM EDT Thu Sep 7 2017 Upper trough axis is slowly lifting out of the area with high pressure in control at the surface through the short term. Also, tried to reflect the decoupled valleys again tonight, so have a split between our typical cool spot around the mid 40s, and the other warmer spots in the upper 40s and low 50s. As the upper trough lifts out, we'll see a rise in heights/thicknesses on Friday along with plenty of sunshine, which will allow high temps to warm more into the mid and even a few upper 70s.
305 PM CDT Thu Sep 7 2017 Aloft: Weakening NW flow was over the Cntrl Plns with a ridge over the Wrn USA and a trof in the E. The Wrn ridge will be forced E over the Plns thru tomorrow. The last 2 runs of the NAM/GFS/RAP/EC suggest some spotty shwrs and embedded tstms will develop over Wrn/Cntrl KS at the nose of the low-lvl jet. Svrl degs warmer than today. it appears the high/ridge will be nudged over the Plns as a deep trof moves onshore in the W. Temps will average just a touch warmer than normal.
Upper level ridge will remain over South Texas through the short term. Lows inland will fall into the lower to middle 60s with low/mid 70s across the immediate coast.
144 PM EDT Thu Sep 7 2017 Additional disturbances will rotate about the base of the highly amplified upper level trough today, keeping afternoon and early evening shower chances in the forecast. Drier and warmer conditions will return this weekend as high pressure settles into the Great Lakes region. Precipitation will gradually diminish later today into tonight as an upper trough moves out of the region. With this, low temperatures may stay a bit warmer than in previous couple of nights, although will still be below normal for early September. H5 trof will be pulling out to the northeast up the St.
205 PM EDT Thu Sep 7 2017 High pressure will prevail through late week. Tonight: Mainly clear with cool temps with lows ranging from the mid 50s nw zones in cooler locales to the lower to mid 60s along the coastal corridor. Given the pattern, fair weather is expected with dry and cooler air filtering over the area within a generally northeast flow. High temps should peak in the low/mid 80s, warmest in Southeast Georgia.
Negatively tilted upper trough lifting into Oregon this afternoon and weakening. Another trough forecast to deepen off the Central California Coast overnight, forming closed upper low by Friday morning. Models similar in lingering upper low off the SoCal coast over the weekend as upper ridging builds into NorCal. This will keep a threat of afternoon showers/thunderstorms over the higher Sierra Nevada.
304 PM CDT Thu Sep 7 2017 Quiet, seasonal weather is expected over the next 24 hours, as the Northern Plains remains in a weakly forced environment between a sharp upper level ridge over the western U. and a deep trough over the East. Forecast temperatures for Friday remain similar to those observed Thursday, save for east central South Dakota into southwest Minnesota, which could be a few degrees cooler. This will result in winds taking on a more southerly component, and with sustained speeds of around 10 kts lows will be close to 60 through south central SD and the MO River corridor, trending downward to the lower 50s over southwestern MN and IA Great Lakes area.
651 PM EDT Thu Sep 7 2017 A cold front will exit the area this afternoon. A weak ridge of high pressure will cross the area tonight.
Afternoon convection that fires over the higher terrain of northeast New Mexico may make a run at the TX/NM line late this evening but should come up short of the terminals, with a little mid-high debris clouds likely the only impacts. A steep high pressure ridge is to our west, the axis of which extends from northern ID clear into the Big Bend. As the ridge axis pushes further east tomorrow, storm chances look to be even less likely. We will continue to trend dry through the weekend and into the early workweek as the ridge expands and contracts over the region.
High pressure over the Ohio valley will keep the PAH forecast area dry into Friday. South winds across the area will give us a little warmer temperatures tonight into Friday, with lows around 50 degrees and highs around 80 degrees. The high will move east as another area of high pressure builds over the Great Lakes region for the weekend.
308 PM CDT Thu Sep 7 2017 At 3 PM, a short wave trough was moving southeast through Wisconsin.
104 PM CDT Thu Sep 7 2017 Low pressure and an associated cold front will drop south through the area today. Highs will be in the mid to upper 70s over North Dakota with cooler highs in the 60s over Minnesota where there will be more cloud cover. Winds from the northwest will shift to the north and then to the northeast throughout the day as the low drops south, and there is a chance for some breezy conditions after the cold front moves through. Plenty of clear skies and sun as as return flow sets up out of Great Lakes high pressure system.
308 PM CDT Thu Sep 7 2017 Deep trough in the eastern United States and sharp ridge in the Rockies was supplying pleasant conditions across the dvn cwa, due to a northwest flow aloft. A cold front stretched from northern MN to central WI and into northern lower MI. A back-door weak cold front (more of a wind shift line) will drop southwest to about Highway 20 by sunrise and then stall. Friday: Northwest flow aloft continues as the center of a Canadian high pressure system settles into the Lake Superior/Upper MI region. Therefore, highs should range from the upper 60s at Freeport, IL to the lower 80s at Memphis, MO.
651 PM EDT Thu Sep 7 2017 Cool weather and shower chances can be expected until high pressure builds this weekend. Upper-level trough axis swings over us later today, expanding downlake clouds and showers. This is in response to multiple ripples passing through the mean resident trough with cold mid-level temperatures holding. Lows tonight will again be cooler than average, but with increased clouds expected, may be a few degrees warmer than this morning's readings. Weak disturbance will cross through the broad upper-trough before it departs the area Friday evening. High pressure at the surface and northwest flow aloft will bring dry weather with stunted temperature moderation. MVFR stratocu will persist under upper troughing with scattered showers possible through early evening. Brief restrictions are possible through Fri under an upper trough.
157 PM EDT Thu Sep 7 2017 High pressure with dry and cool weather for the remainder of the week. Feeling a lot like Autumn across the region as cool high pressure continues to build overhead. Although high pressure is at the surface we still will have an upper trough swinging through, and like yesterday an isolated diurnal shower or two will be possible. Lows at night will be around 50 degrees lowlands ranging to the lower 40s northeast mountains.
245 PM EDT Thu Sep 7 2017 A deep upper-level trough will influence our weather for the next several days.
147 PM EDT Thu Sep 7 2017 Cooler and drier air continue into the weekend. Cooler and drier air will reside over the cwa through tonight as high pressure moves into the region. The near term will remain relatively quiet with high pressure over the area and Irma still well away from the region. Cooler than normal temperatures will continue, and with a dry airmass still in place, do not expect any rainfall.
so cooler nights will continue for at least the next few days. Models have remained consistent with the central states remaining on the edge of large scale ridging that will remain centered over the west.
420 PM EDT Thu Sep 7 2017 A deep upper-level trough will influence our weather for the next several days.
Cooler and breezy weather will prevail for the weekend thinning the smoke out. An opened up area of low pressure off the Northern California and Oregon coast is ejecting bits of energy northward up the west side of an upper level ridge and towards Eastern Washington and North Idaho. As a result the forecast holds onto a very low probability of thunderstorms trekking northward at 15 mph and possibly producing infrequent lightning and light rainfall tonight into Friday ahead of an incoming cold front.
430 PM EDT Thu Sep 7 2017 An upper level trough located over the region will continue to allow for cool temperatures, spotty rain showers and plenty of clouds for tonight into tomorrow. Delta T/s will be quite high for this time of the year as H850 temperatures fall back into the lower single digits and cool/moist cyclonic flow across the Great Lakes. The lowest values will be across the mid-Hudson Valley and NW CT. Temperatures will remain a bit cool again with mainly 60s and some 50s across the higher terrain.
Upper air pattern is characterized by steady northwesterly flow across the central conus with the poignant low pressure centered in the Great Lakes region. Lee troughing builds over the CO Rockies during the early evening hours as a weak perturbation shifts southeast into central Kansas between 00 and 12Z tonight.
/ISSUED 452 AM CDT Thu Sep 7 2017/ Not a lot of issues with the forecast for SE TX these next several days as the much cooler/drier airmass settles over the region. The upper level ridging building in from the west will help keep a dry NW/N flow aloft through much of the forecast period.
409 PM EDT Thu Sep 7 2017 The North Country will continue to be influenced by a deep upper level trough through the first half of the weekend.
Afternoon and evening thunderstorms will develop over most mountain ranges today, moving southeastward out over the lower elevations during the late afternoon and evening hours.
High pressure is over east Arkansas this afternoon. As the high moves slowly east tonight, skies will remain clear tonight. High pressure will remain over much of the eastern U.
134 PM EDT Thu Sep 7 2017 Cool weather and shower chances can be expected until high pressure builds this weekend. Upper-level trough axis swings over us later today, expanding downlake clouds and showers. This is in response to multiple ripples passing through the mean resident trough with cold mid-level temperatures holding. Lows tonight will again be cooler than average, but with increased clouds expected, may be a few degrees warmer than this morning's readings. Weak disturbance will cross through the broad upper-trough before it departs the area Friday evening. High pressure will then build in for the weekend, leaving dry weather with a stunted temperature moderation. MVFR stratocu will persist under upper troughing with scattered showers possible through early evening. Brief restrictions are possible through Fri under an upper trough.
A drier and cooler airmass will continue over the region tonight and Friday. Dewpoints tonight in the 50s, combined with light winds and nearly clear skies (only a few high, thin cirrus possible) will allow overnight temps to steadily fall through the evening, with overnight lows ranging from the low to mid 50s over interior counties, to low and mid 60s near and along the coast. Highs on Friday similar to today, but maybe a couple of degrees warmer, with highs ranging from the lower 80s inland to mid 80s closer to and along the coast.
/EC/ All is on track with forecast as high pressure and a dry airmass remain in control of ArkLaMiss weather. /EC/ Prior discussion below: Today through Tonight: Prior to dawn an anomalous high pressure airmass was bringing in some cooler readings in the lower to upper 50s. The strong fall like amplified trough will begin lifting to the east. The anomalous airmass will continue to bring a milder day and a cooler night to the region. Under north winds highs will be in the upper 70s to the lower 80s. Lows for tonight will range from the lower to middle 50s with some good radiational cooling.
Models agree on amplification of a mid-upper ridge just to our west into the weekend with continued northwesterly to northerly flow aloft. Deterministic GFS and a handful of GEFS members have a cold front moving through Thursday, but the majority of ensemble members and ECMWF do not show this.
1256 PM CDT Thu Sep 7 2017 A very amplified trough for this time of the year is present over the Great Lakes. This trough will continue to swing toward the Eastern seaboard today. High pressure will then build in from Ontario this evening into Friday with mostly clear skies. The benign weather regime will be a result of a broad high pressure in place at the surface. Temperature-wise, we do look to gradually moderate into the weekend as upper ridging builds in from the west behind the eastern CONUS trough.
238 PM EDT Thu Sep 7 2017 High pressure with dry and cool weather for the remainder of the week. A rather tranquil fall like scenario with high pressure of Canadian origin continues to dominate our weather with mostly dry and cooler than normal conditions. Lows at night will be around 50 degrees lowlands ranging to the lower 40s northeast mountains.
Even within the DFW metro area proper, morning temps should reach the lower 60s, a few degrees below average for early September. This pattern consists of a building upper ridge over the Great Plains with an upstream upper low positioned off the west coast. In addition, the northward progression of Hurricane Irma over the eastern US will behave as a blockade downstream, acting to hold the upper ridge in place over the central portion of the country. Have generally sided with warmer high temperature guidance and cooler low temperature guidance with the dry air in place allowing for larger diurnal temperature swings. A light southeast wind flow along the western flank of this ridge will persist at all TAF sites through Friday.
The period starts off with a deep upper level trough just east of the plains states.
The lowest 3000 feet of the column remain fairly dry, so some of the precipitation may not make it to the ground at least early at the onset.
This ridge will shift east with time, which will get some southerly winds moving into the area through the overnight period.
/issued 419 PM CST Sat Jan 13 2018/ A cold day despite plentiful sunshine will quickly give way to freezing temperatures overnight with light north winds as Arctic high pressure remains anchored to our north.
615 PM EST Sat Jan 13 2018 High pressure will maintain dry but cold temperature for the rest of the weekend. Upper trough will remain in place but a wind shift to the southwest should actually support some moderation in temperature through the beginning of the week.
632 PM EST Sat Jan 13 2018 High pressure builds into the region tonight and Sunday.
/Issued 314 PM CST Sat Jan 13 2018/ Another chilly day is well underway across eastern Oklahoma and western Arkansas as high pressure prevails. Any snow that does fall shouldn't last long as temperatures expected to be warmer on Sunday Afternoon than they have been for the past couple of days with highs ranging from the mid 30s to mid 40s.
754 PM EST Sat Jan 13 2018 Low pressure will exit across the Maritimes tonight. High pressure will build in from the west later tonight and Sunday and crest over the area Sunday night. Low pressure will exit across the maritimes overnight while high pressure builds toward the region.
419 PM CST Sat Jan 13 2018 A cold day despite plentiful sunshine will quickly give way to freezing temperatures overnight with light north winds as Arctic high pressure remains anchored to our north.
411 PM MST Sat Jan 13 2018 Current surface map places warm front across southeast Montana, through the Black Hills, into western Nebraska. Warm front continues to push east overnight with very little drop off in temperatures across northeast Wyoming and the Black Hills. Upper trough rotating around the west side of a Hudson Bay low will drop through the Dakotas Sunday afternoon into Sunday night.
710 PM EST Sat Jan 13 2018 High pressure will begin to build toward the region from the west today. The high will then settle over the region tonight, then moving east on Sunday.
A few clouds should persist overnight and will keep overnight lows a few degrees warmer than seen this morning but nothing too great. Tomorrow, the deep trough over the east coast remains while a high amplitude ridge remains over the west coast. The jet stream is dropping down this ridge, moving over Montana, Wyoming, and the high plains and will provide enough support for some showers over that area.
923 PM EST Sat Jan 13 2018 High pressure builds into the region tonight and Sunday.
520 PM CST Sat Jan 13 2018 Southerly winds will give way to northerly winds as a cold front moves through the TAF sites between 10z and 14z.
704 PM EST Sat Jan 13 2018 High pressure builds in from the northwest tonight through Sunday. Upper trough axis to linger along the coast overnight, but even along the coast skies should become mostly clear after 06Z.
Expect skies to remain clear through the remainder of the night and through most of tomorrow with high pressure in the vicinity. The high will also allow winds to become L/V overnight. The high moves just to the east tomorrow, allowing southeast flow to return tomorrow morning, but will remain around 10kts through the day. There has been little change in the large scale pattern with high pressure in control at the surface and mid level ridging upstream. As high pressure begins to shift east on Sunday, winds will veer to east and southeast, also allowing dew points to increase. Continued moisture return will add a little more depth to the low cloud layer Sunday night.
Light southerly winds will develop later tonight in the wake of the passing high pressure, and there will be increasing cloud cover from the northwest due to an approaching Canadian Clipper. Expect lows of about 10 to 20 below zero, and a little warmer along the North Shore.
Sunday will be dry and mild with high pressure aloft and low level offshore flow.
High pressure in place over the upper midwest will build across Indiana and the Ohio Valley tonight and exit to the east of Indiana on Sunday.
Brief freezing temps around 30-32 degrees across the northern portions of the CWA around sunrise are still expected. Will hold off on a Freeze Warning for these areas, for now, due to expected isolated nature of freezing temps and for only a short duration if they occur. Elsewhere across the Coastal Plains, modest increase in moisture values along with a weak flow off the Gulf and area bays should preclude freezing temps.
529 PM CST Sat Jan 13 2018 High pressure over NW Texas will bring generally clear skies to the region tonight.
Will hold off on a Freeze Warning for these areas, for now, due to expected isolated nature of freezing temps and for only a short duration if they occur. Elsewhere across the Coastal Plains, modest increase in moisture values along with a weak flow off the Gulf and area bays should preclude freezing temps.
630 PM EST Sat Jan 13 2018 High pressure will build into the area tonight from the upper Midwest. The high will move quickly eastward to New England by Sunday evening.
207 PM PST Sat Jan 13 2018 High pressure will remain over the area through the weekend leading to a continuation of above normal temperatures and dry weather.
Tonight, this high settles southeast across the area under a northwest flow aloft, providing another night of cold and dry weather.
919 PM EST Sat Jan 13 2018 High pressure builds in from the northwest tonight through Sunday. Upper trough axis to linger along the coast overnight, but even along the coast skies should become mostly clear after 06Z.
/issued 236 PM CST Sat Jan 13 2018/ Temperatures will be roughly 10 degrees cooler today then what we saw yesterday across Southeast New Mexico and much of West Texas.
On Sunday, a weak upper level trof may allow some light snow/flurries to skirt the Ozark foothills of Missouri Sunday morning, but the main effect will be increasing clouds from the west. Approaching low pressure will shift our winds to the south through the day Sunday. Temperatures will still only reach the middle to upper 20s for highs, but the south winds Sunday night will keep temperatures up, with lows in the lower 20s.
Chattanooga Airport, TN 19 36 23 45 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 14 34 22 43 / 0 0 0 10 Oak Ridge, TN 16 34 22 43 / 0 0 0 10 Tri Cities Airport, TN 13 32 18 40 / 0 0 0 10.
Overnight lows in the lower to middle 20s appear on track. /issued 419 PM CST Sat Jan 13 2018/ A cold day despite plentiful sunshine will quickly give way to freezing temperatures overnight with light north winds as Arctic high pressure remains anchored to our north.
This band of light snow will continue to move to the Highway 65 corridor through out Sunday morning before tapering off and decreasing as it moves towards the Highway 63 corridor and south central Missouri.
909 PM EST Sat Jan 13 2018 KBYX detects a few sprinkles over nearshore and offshore waters surrounding the Lower Keys. In the low levels of the atmosphere, a large area of high pressure over the Ohio Valley will build southward down the Florida peninsula overnight. In the mid to upper levels of the atmosphere, a trough of low pressure will be located over the eastern Gulf of Mexico tonight.
930 PM EST Sat Jan 13 2018 High pressure will build into the area tonight from the upper Midwest. The high will move quickly eastward to New England by Sunday evening.
This high will drift across the forecast area tonight, resulting in clear skies and light/calm winds.
732 PM EST Sat Jan 13 2018 Cold dome of high pressure will continue to expand southeastward into our area overnight. Temperatures are already in the mid to upper 30s across southeast Georgia and in the low 40s across most of northeast Florida, and you don't have to look far upstream to find freezing temps here early this evening. Southeast Georgia and portions of northeast Florida west of Highway 301 should see freezing temps for a period of around 6 to 8 hours, and a few wind protected spots will be very close to hard freeze criteria.
834 PM EST Sat Jan 13 2018 Canadian high pressure will approach from the northwest through Sunday.
The low clouds will slowly erode from south to north late tonight into Sunday morning.
900 PM EST Sat Jan 13 2018 High pressure will maintain dry but cold temperature for the rest of the weekend. Lingering snow showers and associated clouds will continue to dissipate through the overnight period as high pressure builds at the surface. Upper trough will remain in place but a wind shift to the southwest should actually support some moderation in temperature through the beginning of the week.
High pressure was centered over North Dakota, and over the next 24 hours this high pressure will slowly slide southeast.
228 AM EST Sat Jan 13 2018 Precipitation decreases as low pressure exits to the east, with Arctic air mass in its wake.
However, there is still a chance of a spotty shower as the cold front moves through overnight tonight. /issued 258 PM EST Fri Jan 12 2018/ REST OF TODAY AND TONIGHT: A low pressure system is working its way across the SE CONUS with a cold front draped to its south. Southerly wind flow has increased the low level moisture across South Florida allowing scattered showers and a few storms to develop ahead of the approaching cold front. Showers will continue throughout this evening and into tonight before the cold front passes through the area. SHORT TERM /THIS WEEKEND/: After the cold front moves through the region early Saturday morning the winds will shift northerly and cold air advection will move down the peninsula.
Dendritic zone humidity suggests some downturn late this evening and maybe another push toward morning so some snow up high probably possible through then especially on the higher peaks. High pressure remains anchored over the Great Basin through the weekend with weak pulses of energy bringing some high clouds in and out of Utah and Colorado.