Aikyam-Lab/Synoptic-Bench huggingface dataset:
High pressure over British Columbia will keep cold air over Western Washington this week, while easterly flow aloft maintains dry weather. Highs will be in the lower to mid 30s, with lows in the teens to 20s.
349 AM CST Tue Jan 3 2017 A cold front will move across North and Central Texas today and bring an abrupt end to the very warm temperatures we have been experiencing since Christmas.
337 AM EST Tue Jan 3 2017 Rain continues across the area as weak low pressure tracks northwest of the region.
Widespread dense fog is occuring in a mild/moist air mass ahead of a cold front now over our western counties. Sfc temperatures are expected to stay above freezing until after the drizzle ends.
1234 AM EST Tue Jan 3 2017 Widespread rain is expected through the overnight as a warm front advances slowly north through the area.
424 AM EST Tue Jan 3 2017 Low pressure will track northeast through Ohio today.
A cold front will move through the area Tuesday morning switching winds from westerly to northerly - eventually turning easterly Tuesday evening. Surface winds will turn from westerly to northerly early Tuesday as a cold front moves through. temps have warmed into the upper 50s to lower 60s on the Caprock with even warmer temps in the Rolling Plains. See no reason to abandon our recent strategy of favoring the ECMWF's phasing of troughing from southern Canada with energy currently atop the Oregon coast.
105 AM EST Tue Jan 3 2017 Low pressure will bring widespread rain showers tonight into Tuesday.
However, weak ridging over our CWA will keep conditions rather benign for the remainder this morning. Dewpoints have held steady in the lower 70s. The highest chances of precip will reside along the east coast metro. Temperatures this afternoon will once again max out in the low to mid 80s, which is around 6 to 9 degrees above normal for this time of year.
Patchy and intermittent drizzle continues this afternoon where surface temps remain above freezing so this has not been an issue. As a result, did hoist a dense fog advisory that runs until 00z when approaching cold front drives low level moisture out of the area. This cold front continues to push across central Nebraska this afternoon with stratus deck lingering quite a ways behind, but much improvement in visibility. Wind gusts will drop wind chills into the negative single digits in our northwest by morning with brisk conditions continuing through Tuesday as cold high pressure continues to move overhead.
1201 AM CST Tue Jan 3 2017 The light wintry mix is expected to continue this evening and early tonight until a cold front comes through and wisps the precipitation east of the area. Farther south, in the local area, the precipitation is due to warm advection in the lower layer of the atmosphere. This warming (along with a dry layer) is leading to freezing rain/drizzle (even some sleet) across portions of southern MN and western WI. The main impacts locally will be with the freezing drizzle/rain and fine glaze of ice over the next several hours. The longer term trends continue to indicate a cold northwest flow pattern with a series of moisture starved cold fronts/short waves moving through the flow.
355 AM CST Tue Jan 3 2017 First in a series of cold fronts passing through the region as advertised.
311 AM CST Tue Jan 3 2017 Precipitation continues to shift east and northeast of the forecast area this morning for the most part, but given lingering patches of freezing drizzle and slick spots on a few area roadways, will leave the winter weather advisory going until it's scheduled 6 a. We will be stuck in the low clouds and fog for awhile, but the next new concern will be related to the increasing northwest winds. As the mid/upper trough dips across the Great Lakes tonight and scrapes the eastern portion of the forecast, we could see scattered flurries over west central Wisconsin.
Arctic high pressure settles over the northern high plains mid week then moves southeast of the region late week.
335 AM EST Tue Jan 3 2017 A cold front crosses late Tuesday.
247 AM EST Tue Jan 3 2017 Low pressure over the lower Mississippi Valley will move northeast today causing rain in our area. Very cold air will then overspread our area on the backside of this low tonight, and persist through the remainder of the week. A low pressure area will move northeast into central Ohio later today and continue to bring low ceilings and vsbys over northern Indiana. Conditions should become LIFR before improving later today as the low continues to move northeast out of the area.
Overnight lows will range from the lower to middle 60s inland, and upper 60s along the immediate coast. Quiet weather will continue on Monday with upper level ridge over South Texas.
Strong high pressure will provide a dry before additional precipitation chances move into the area late week and into the weekend, as low pressure organizes over the western plains and moves into the Great Lakes. An axis of high pressure will slide eastward across the area today, with dry weather expected.
1039 AM EDT Sun Mar 19 2017 High pressure along with cooler and drier air will remain over the region through Monday night.
957 AM EDT Sun Mar 19 2017 Low pressure moves off the east coast today. High pressure crosses tonight. A cold front crosses Monday night.
Afternoon temps will be near normal today and then a few degrees cooler on Monday. Some colder air will remain trapped along the east slopes of the wa cascades and some of the higher elevations such as near Easton could experience some accumulating snow.
1136 AM EDT Sun Mar 19 2017 Low pressure passes well to the east today as high pressure builds later today through Monday.
Precipitation was being caused by weak vorticity advection and weak jet divergence behind a cold front that moved through the region earlier this morning. At the same time, a cold front was dropping south through the region and had made it as far as Lewistown as of 09z. Shower chances will increase through the day today as the cold front works south through the area increasing frontogenesis and inducing easterly upslope flow. Snow accumulations through Monday night look minimal with an inch across some of the lower elevations and a few inches over the mountains.
This wl allow the front that move thru the FA on Sat, to work back acrs AR as a warm front later today and tngt.
/issued 508 AM CDT Sun Mar 19 2017/ Taking a look at the big picture this morning, a deep low was exiting off the east coast near DE/NJ with a new trough developing out in the Pacific well west of the CA coast. In between, a ridge somewhat reminiscent of summertime at a strength of 587 dam was centered over the Plains. A weak disturbance was passing under this ridge this morning, moving from the TX/NM border into the TX Panhandle.
/Issued 419 AM EDT Sun Mar 19 2017/ Canadian high pressure and northwest flow aloft will bring dry and stable conditions to the CWA through tonight. As the high pressure ridge drifts over the CWA tonight, winds will diminish rapidly after sunset. The northern stream is very progressive during this period, with an amplified trough pattern digging deep into the higher latitudes.
Weak cool to neutral advection at 850mb will bring slightly cooler air southward today as the upper level ridge builds eastward toward Central Alabama. Might see some high clouds spilling over the ridge late this afternoon, but it should not impact potential warming. Expect highs in the low 60s to lower 70s.
Temperatures this morning range from the lower 40s to mid 50s. /issued 349 AM CDT Sun Mar 19 2017/ High pressure will continue to build over the Mid South both at the surface and aloft through Monday as a large upper level low pressure system over the Mid Atlantic states pushes east. Dry and warmer weather can be expected with highs today ranging from the middle 60s to lower 70s and into the upper 70s to lower 80s on Monday.
/issued 349 AM CDT Sun Mar 19 2017/ High pressure will continue to build over the Mid South both at the surface and aloft through Monday as a large upper level low pressure system over the Mid Atlantic states pushes east. Dry and warmer weather can be expected with highs today ranging from the middle 60s to lower 70s and into the upper 70s to lower 80s on Monday.
947 AM EDT Sun Mar 19 2017 Satellite imagery and surface/marine observations show that the leading edge of the cold front is right on schedule, moving through Tampa Bay at this time. Ceilings of around 2kft will be common for a couple of hours as the cold front passes. Otherwise, high pressure settles back into the waters by Monday with a return to light winds and slight seas.
High pressure will build over the eastern United States on the heels of the backdoor front. Due to this high pressure winds will gradually increase through the afternoon and overnight out of the northwest initially, veering around to northeast on Monday.
Breezy south to southeasterly winds continue over much of North Dakota while a warm front works its way to the northeast. Upper level analysis places ridge axis over and just to the east of the Red River Valley while short wave passes to the north. Cooler air shifts in and an area of enhanced frontogenesis develops primarily over southwestern and south central North Dakota bringing some light rain with a transition towards light snow overnight. Ridge gradually develops to the west to start the week, though a few weak clippers moving through may bring some precipitation chances primarily to the southwest along with cooling temperatures.
A cold front/surface wind shift to the north was located just north of Lethbridge at 12z.
Latest trends and guidance suggest warmer temperatures southwest than previously forecast. Breezy south to southeasterly winds continue over much of North Dakota while a warm front works its way to the northeast. Upper level analysis places ridge axis over and just to the east of the Red River Valley while short wave passes to the north. Cooler air shifts in and an area of enhanced frontogenesis develops primarily over southwestern and south central North Dakota bringing some light rain with a transition towards light snow overnight. Ridge gradually develops to the west to start the week, though a few weak clippers moving through may bring some precipitation chances primarily to the southwest along with cooling temperatures.
Overall today should be warmer and with drier air aloft as upper ridge drifts overhead today.
1220 PM EDT Sun Mar 19 2017 Dry conditions will prevail until the next cold front crosses the region Monday afternoon and overnight. Fog/freezing drizzle issues have mostly resolved and we are left with broken/overcast skies. The clouds will start to slowly erode as ridging builds in from the west. Sunday night will remain dry as the ridge continues to slide east. Rain will be possible sunday afternoon and into the evening as the next cold front quickly crosses the region.
A weak cold front moves into Nrn Neb this morning limiting highs to the upper 70s to around 80 across the north. Pacific high pressure backs completely through the forecast area tonight. A Pacific cold front crossing the area Sunday night will usher in cooler air and somewhat higher humidity for Monday, which will alleviate the fire weather concerns. As mentioned it will be cooler, with highs ranging from the mid 50s across northern Nebraska to near 70 degrees across the far southwest part of the state.
Banking on modest mixing this afternoon to allow temps to range from the upper 50s to lower 70s, with the warmer temps over central and south central SD. An area of low pressure over central Saskatchewan and upper level ridging will bring abnormally warm temperatures into the region today. The combination of temperatures at 925/850 mb between the 75th and 99th percentile and a weak trough passing through the region should produce highs in the upper 50s, to the mid 70s. On Monday, a stronger Canadian high pressure will begin sliding southward with a dry northeasterly flow setting up over the NE portion of the CWA.
Deep upper trof of low pressure along the eastern seaboard will continue to shift east through tonight as high amplitude ridge over much of the central conus slowly shifts east. As for temps will lean towards the warmer mos values for highs today due to more sun than clouds combined with increased subsidence in the boundary layer and persistence. For tonight will lean towards the cooler mos values due to mostly clear skies and light winds near the surface setting the stage for good radiational cooling. Highs today will range from the lower to middle 70s for most inland areas to the east and along the coast and the upper 70s to near 80 for most inland areas the west.
An area of low pressure over central Saskatchewan and upper level ridging will bring abnormally warm temperatures into the region today. The combination of temperatures at 925/850 mb between the 75th and 99th percentile and a weak trough passing through the region should produce highs in the upper 50s, to the mid 70s. On Monday, a stronger Canadian high pressure will begin sliding southward with a dry northeasterly flow setting up over the NE portion of the CWA.
However, high pressure aloft will likely suppress most attempts of any convection to get very far. Overall today should be warmer and with drier air aloft as upper ridge drifts overhead today.
850 mb thermal ridge is over the area thru 18z with 925 mb thermal ridge over the area thru 21z. Thus there will that period where a favored southwest to west wind will occur this aftn bringing down warmer temps aloft into the red river valley. temps will settle back below the freezing mark by 12z mon. Favored west wind Monday along with some sun should allow temps to reach the 40s in all but areas north of devils lake despite cooler 925-850 mb temps.
Winds are mainly SSE as region still lies out ahead of lee-side trough which is slowly working east off the Front Range. the lee-side trough will play role in wx for the region today.
1030 AM EDT Sun Mar 19 2017 High pressure will build over the area today and tonight, before a cold front crosses the area Monday night. Strong high pressure then builds across the region during the middle to latter part of the week. High pressure then builds overhead tonight with clearing expected by daybreak Monday. Chilly with temps in the low 30s east and upper 20s west. High pressure will then shift rapidly to the south with showers expected in the afternoon and night as cdfnt crosses the area. Low pressure developing along front across North Carolina Tue night will bring another round of rain Tue evening with rain ending by daybreak Wed. Some accumulating snow is likely across the higher elevs of eastern WV and Highland county.
The center of a sprawling midlevel anti-cyclone has only shifted into NE Mexico early this morning with its influence of subsident warmth continuing to be felt throughout the SW Conus. Regional 00Z sounding data sampled H5 heights in a 584-586dm range on the western periphery of this ridge, and only subtle changes to this pattern will be experienced over the next 48 hours.
There is a small opportunity for patchy fog development as the surface moisture pools against the quasi-stationary surface boundary extending through the highway 283-183 corridors.
728 AM EDT Sun Mar 19 2017 High amplitude mid to upper level ridging will build across the region today. With that stated there will be some high cloud pushing southward into the area by towards evening in advance of the approaching weak cold front. This will lead to both a very stable lake aggregate setup today along with temperatures holding in the lower to middle 40s. Apex of the 500-300mb ridge axis is forecasted to be in place overhead through 06Z then pushing east of the region between 06-12Z. Col structure and very weak cold front is forecasted to track south southeastward through the cwa during the day. Dynamical support for ascent will be tied to what is actually an impressive mix of 850mb moisture transport and 500mb theta e ridge.
a quiet wx pattern as high pressure remains in cntrl.
906 AM EDT Sun Mar 19 2017 Weak cold front currently moving into Lake and Volusia counties early this morning will continue southward across central Florida, shifting south of Lake Okeechobee later in the afternoon. A thin band of low clouds ahead of the weak cold front moving into the area, is producing brief IFR cigs across northern terminals. (Previous Discussion) A weak cold front will drop through the northern waters this morning and move into south Florida this afternoon. The pressure gradient will start to ease late tonight as a high pressure ridge noses down into north Florida, but a small craft advisory will continue in the Gulf Stream. A weak cold front will drop through central Florida this morning and early afternoon, reinforcing the dry airmass in place.
Weak cold front moved southward across northern Utah overnight and has dissipated around the Juab-Utah county line. The 850 mb temps are forecast to be about 3-5 degrees C cooler late this afternoon than they were yesterday afternoon across northern portions of the area.
Scattered clouds will continue to decrease as a cold front moves south of our area this morning, with dry conditions and clear skies anticipated through the day. Widespread highs in the low-mid 70s are expected.
936 AM EDT Sun Mar 19 2017 Dry conditions will prevail until the next cold front crosses the region Monday afternoon and overnight. Main change was to add areas of fog as well as patchy freezing drizzle along the ridges given current obs. Sunday night will remain dry as the ridge continues to slide east. Rain will be possible sunday afternoon and into the evening as the next cold front quickly crosses the region.
1033 AM EDT Sun Mar 19 2017 High pressure will build into the region from the west tonight as an upper level low tracks offshore the Carolina coast. Southerly return flow will develop late Monday into Monday night as high pressure moves offshore the Southeast coast and a backdoor cold front approaches the area from the north. Halifax county) this morning, expect clear skies assoc/w subsidence on the western periphery of an upper level low (centered over the DELMARVA this morning) progged to track SE offshore the NC coast this aft/eve. Expect lows in the lower/mid 30s, coldest in the typical locations. -Vincent High pressure will move south and southeast of the state on Monday allowing for a rapid warming trend. Lows Monday night are favored to be 10-15 degrees warmer than those of Sunday night.
/ISSUED 318 AM CDT Sun Mar 19 2017/ The weather pattern for the next several days will be dominated by an upper level ridge over the Central CONUS, meaning most of this week will be warm and precipitation-free.
Quiet night tonight with northwest flow aloft settling in and the upper trough trying to hold on to the eastern CONUS. The trough should slide east into the Atlantic later today, and upper ridging will try to build in today as well. Mainly have highs in the mid to upper 50s, but the low 60s are not out of the question with spring approaching and the current sun angle.
/Issued 338 AM CDT Sun Mar 19 2017/ Unseasonably warm weather expected over the next couple of days as strong upper ridge builds over the Southern Plains.
Meanwhile, a warm front will begin to lift northeast into the Ozarks today. We should see an impressive temperature gradient with highs expected to warm into the lower 80s along the I-49 corridor. This should promote high temperatures in the lower to middle 80s.
High pressure aloft and over the Central Gulf will continue to dominate the weather pattern today and Monday. As such, it will be another warm, spring-like day to round out the weekend, with highs a degree or two warmer then yesterday. For Monday, the winds maybe a bit breezier as the pressure gradient once again begins to tighten as low pressure begins to deepen in the Panhandles region.
A cold front was moving into central Florida, and drier and cooler conditions are expected today. Under sunny skies, highs will be in the mid 60s along the coast, upper 60s across southeast Georgia, and the low to mid 70s for north central Florida and the Suwanee Valley. Northwesterly to northerly winds will prevail today behind a cold front. Winds will become north northeasterly tonight as high pressure builds towards the mid Atlantic coastline.
Not bad for the last day of astronomical winter! A cold front will move into the area tonight. Much cooler on Monday for the first day of Spring, but still above normal with highs in the upper 50s to upper 60s. Breezy northeasterly winds prevail which will usher in drier dewpoints, with grassland fire danger indices only reaching the high category.
Weak high pressure will be over the area today, though yesterday's cold front has stalled across southeast and south-central Oregon. The confidence in the general pattern is becoming higher, but the timing of individual waves moving through the troughs remains uncertain.
825 AM PDT Sun Mar 19 2017 Broad high pressure over the Southwest today will give way to an approaching low pressure system over the eastern Pacific this week. After today, disturbances moving around the low will bring increasing clouds, wind, and moisture through midweek.
1035 AM EDT Sun Mar 19 2017 The low clouds that oozed south in wake of the frontal passage this morning have begun to slowly break-up with the onset of mixing and solar heating. Chattanooga Airport, TN 60 39 70 55 / 0 10 10 20 Knoxville McGhee Tyson Airport, TN 57 34 66 52 / 0 0 10 30 Oak Ridge, TN 57 35 67 53 / 0 0 10 40 Tri Cities Airport, TN 52 30 63 46 / 10 0 10 40.
A weak surge of cooler air will move south east of the continental divide through tuesday.
320 AM CDT TUE AUG 2 2016 As of 00Z/02 the center of the subtropical ridge was INVOF SE TX with some evidence of a minor weakness in the mid level height fields across W TX. The circulation assocd with subtropical ridge is expansive enuf such that the SE mid level flow will keep the more moisture laden parts of the atmosphere positioned mostly along and w of the mtns in TX/NM. The subtropical ridge will build wwd Wed/Thur and as such the theta-e ridge axis will tend to remain w, favoring isold-sct tstms in/near the mtns. By Fri/Sat the ridge will tend to develop newd INVOF OK/AR which will not change the dry forecast, but it could result in high temperatures a couple of degrees cooler (at most).
357 AM CDT TUE AUG 2 2016 Very little change to the forecast across West Central Texas, as hot and dry conditions persist under the upper level ridge of high pressure.
Thus went with temps toward the warmer end of model solutions. Medium Broad mid level ridging is noted across the area with a few weak vort lobes proggd.
424 AM CDT TUE AUG 2 2016 An upper level ridge remains firmly anchored over the Southern Plains, and this feature will continue to dominate our weather for the next seven days. Rain chances for today should be very low as the center of the ridge is basically overhead. Only a slight chance for very isolated showers and thunderstorms is expected for Wednesday as the center of the ridge retrogrades a bit into Central Texas.
Our next round of rain is expected on Wednesday, as an area of low pressure moves up the Appalachian mountain chain. This low pressure system will provide the lift and moisture necessary to spark showers and a few thunderstorms across the area, particularly in our far eastern counties which will be in closer proximity to the aforementioned weather system. We start off the period in the periphery of a upper level high centered across the Southern plains states. Then a upper level low drives east into the northeast US and will bring slightly lower heights for the weekend.
650 AM EDT TUE AUG 2 2016 A cold front will settle south into NC today as an upper level trough crosses the Mid-Atlantic state. High pressure will follow for Wednesday. A cold front over north-central VA will settle south into the area by this evening as an upper trough axis finally makes a push east across the region.