Aikyam-Lab/Synoptic-Bench huggingface dataset:
248 PM CDT Mon Oct 12 2020 Cooler temperatures in place this afternoon after what very well may be our last 80+ degree day for awhile yesterday. Even with the cooler temperatures, a dry airmass has allowed relative humidity values to slip to near or inside of critical values. First, winds above the surface will become quite gusty and if this higher momentum air can make it to the surface, may see a period of northwesterly winds gusting in excess of 25 mph.
1110 AM MDT Mon Oct 12 2020 Main upper trough axis has pushed east of the area, leaving behind clear skies and cooler temperatures in the 30s and 40s.
Snow levels are expected to rise with this next weather system, but accumulations are possible Tuesday morning on Lost Trail and Lolo passes, but daytime accumulations will mainly be limited to the highest terrain and above 6000 feet in Glacier National Park. The high terrain is most likely to have persistent gusty winds. The cold front passage and unstable conditions behind the front may be the main focus for valley winds, which is most likely to be late in day.
Rapidly developing sfc lee trough/low to result in sw-wly wind gusts to around 35kt over portions of ne and east central NM prior to 13/03Z.
Despite being behind last night's cold front, temperatures will still reach the mid to upper 70s this afternoon, several degrees above normal. A light south wind will trend SWly, then northerly around sunrise with a weak dry cold frontal passage. Tuesday afternoon temperatures will range from the mid 70s north to the lower 80s near Oklahoma.
309 PM EDT Mon Oct 12 2020 A fast moving cold front will move across the area this afternoon into early this evening with gusty winds, showers, and possibly a few storms.
354 PM CDT Mon Oct 12 2020 A weak cold front is forecast to cross into the area late tonight into early tomorrow. Tomorrow morning might have a chance for some light patchy fog especially in the western part of the CWA but after the cold front is completely through, that should flush out fog chances for the rest of the week.
207 PM CDT Mon Oct 12 2020 The late night and early morning cold front has brought a welcome interlude to the hot conditions across the Texas South Plains, although the post-frontal air mass remains bone dry. The dry air, clear skies and light winds will allow temperatures to drop quickly after sunset this evening, with overnight lows mainly in the 40s - a bit cooler than average. This will prompt a quick return to warmer than average temperatures with highs expected to be in the middle to upper 80s for most locations.
A light west to southwest wind will persist this evening ahead of cold front approaching from the northwest. Other than some lower clouds overnight along the passing cold front, sensible weather through the near term will remain fair with no rain chances expected. Lows tonight will be in the lower to mid 60s over inland areas and in the upper 60s to lower 70s near the coast.
1246 PM CDT Mon Oct 12 2020 (This afternoon through Tuesday) Update zones for patchy dust along and behind the cold front early this morning.
1124 AM MDT Mon Oct 12 2020 Temperatures have risen above freezing in response to sunny skies this morning. Another clear overnight is expected however with warmer air aloft in place. overnight lows will run around 5 degrees warmer on Tuesday morning. The synoptic weather pattern will be characterized by a broad longwave trough over the north-central USA, and a developing ridge along the Pacific Coast.
214 PM EDT Mon Oct 12 2020 A cold front will approach from the west today and move through the area this evening. Cooler and drier air will then settle into the region for Tuesday behind the cold front. This is just ahead of a cloud shield associated with an advancing cold front. The cold front will cross the forecast area between 23z and 04z. Heading into the overnight hours, clouds will clear and the pressure gradient will relax which will result in wind diminishing, especially towards daybreak as high pressure nudges into western counties. Winds then quickly shift to southwesterly once again during the day on Tuesday as high pressure builds in from the south.
300 PM CDT Mon Oct 12 2020 Drier air is filling in behind the cold front that passed through the area yesterday evening, and this is allowing skies to clear relatively quickly. Later this morning, we will see winds transition to more westerly and southwesterly as the upper trough continues eastward. Despite the cooler airmass, the relatively dry air and westerly wind component should allow temperatures to rise into the 70s.
1137 AM EDT Mon Oct 12 2020 A line of showers will move through the region overnight along a fast moving cold front. Dry and seasonable weather is then expected until a late week strong cold front bring precipitation and notably cooler air. The exception may be occasional very light rain/drizzle along the eastward facing slopes of the eastern ridges given upslope flow and lingering tropical moisture. A line of showers will rapidly cross the region late tonight through early Tuesday morning ahead of a passing sfc cold front and upper trough. Cooler air filtering behind the front will drop area temperature closer to seasonable norms.
A mid/upper level short wave and surface cold front will push through our area tonight. High pressure will build in behind the front. Zonal flow aloft and surface ridging will keep the area dry early in the extended with a clear sky and mild temperatures.
The cold front has made its way through most of the area as of this writing and will continue to push south this afternoon. Slightly cooler temperatures have moved into the region, providing relief from the record breaking heat but still remaining slightly above normal for early October highs. Drier dewpoints at the surface will allow overnight lows to cool into the low 50s for parts of the Hill Country and northern extend of the I-35 corridor, with other areas seeing upper 50s to low 60s. Dry and benign weather pattern remains in place through Tuesday with slightly warmer than normal afternoon highs, clear skies, and li.
Skies have now cleared over all of the forecast area this morning, with breezy and cooler conditions expected the rest of the day. Gusty northwest winds behind a cold front may gust 20 to 30 kts during the first part of the day before subsiding this afternoon. VFR conditions will prevail thru the period as cooler and drier air filters into the region behind the front. /Issued 238 AM CDT Mon Oct 12 2020/ Winds are starting to increase behind the cold front across portions of Osage county with a 40 mile per hour gust being reported in Burbank.
Snow levels will be rising this afternoon as a warm front passes from southwest to northeast.
150 PM EDT Mon Oct 12 2020 A fast moving cold front will move across the area today and bring gusty winds, showers, and possibly a few storms.
Weak troughs of low pressure are moving across the area resulting in a few light showers meandering across northeast Florida. A weak cold front will move southeast through the region late tonight into Tuesday. Warmer temperatures tomorrow with highs in the mid to upper 80s.
1233 PM CDT Mon Oct 12 2020 Upper level trough axis was into central Kansas at 08Z with residual moisture exiting to the northeast. The cold front was through all but the southeast corner of Kansas. Weak surface ridging crossing east across the state today brings west winds back to eastern Kansas and a decent afternoon WAA pattern. WAA weakens a bit overnight but a modest low-level jet helps keep temps from falling past the mid 40s A weak upper wave passing across the northern Plains brings a modest front/wind shift south into the area Tuesday though the overnight WAA brings a slightly warmer day.
230 PM MDT Mon Oct 12 2020 WV imagery this aftn shows an upper-level trof axis to the east of the Dakotas over the Upper Midwest. Sfc trof/cool front crosses the area this evening into the overnight. High pressure slides sewd quickly late overnight, allowing return flow to commence across wrn portions of the area by midday tomorrow. Another near-normal day of temps tomorrow, with slightly warmer temps across our west compared to the east owing to return flow.
A cold front, and the clouds associated with it, will trek east into and through the forecast area this afternoon into tonight. Behind the front, winds will become northwesterly, allowing for some slightly cooler drier air to begin advecting into the region. This drier air will primarily result in cooler lows tonight, as they range from the lower 50s to middle 60s. Highs on Tuesday will be a little cooler also. However, with warmer temperatures aloft and good mixing during the day in this shallow cooler drier airmass, highs will still be a touch warm in some spots and range between the mid 70s and lower 80s.
Dry weather will continue under high pressure. Through Tuesday night Expansive, strong ridge will remain the dominate weather feature over the eastern Pacific extending inland over Nevada, California and Arizona. There is a weak upper low over the central Gulf of California which will retrograde west and play no part in our near term weather.
Dry warm weather will continue the next several days under a persistent area of high pressure. This is due to a persistent ridge of high pressure extending from the Eastern Pacific over the Desert Southwest.
Surface observations and radar this afternoon clearly define the cold front that will sweep across the area later today, with the boundary currently about to cross the Mississippi River into western Kentucky. Much cooler and drier air will filter into Middle Tennessee behind the front with temps dropping into the 40s overnight, and struggling to get out of the 60s on Tuesday.
Issued by National Weather Service Houston/Galveston TX 413 PM CDT Mon Oct 12 2020 A cold front has moved through Lufkin and is nearing Fort Polk at 3 pm and should continue to steadily push into the area though may slow somewhat as it moves through the Atchafalaya basin.
823 PM EDT Mon Oct 12 2020 High pressure remains over the Gulf of Mexico this evening with a weak boundary somewhere over south Florida. High pressure will remain over the waters through the week, with no headlines expected.
906 PM EDT Mon Oct 12 2020 A line of showers and isolated thunderstorms will move through the early tomorrow morning along a fast moving cold front. A quick moving cold front, currently in western Ohio, will cross the region after midnight. Cooler air filtering behind the front will drop area temperature closer to seasonal norms.
/issued 207 PM CDT Mon Oct 12 2020/ The late night and early morning cold front has brought a welcome interlude to the hot conditions across the Texas South Plains, although the post-frontal air mass remains bone dry. The dry air, clear skies and light winds will allow temperatures to drop quickly after sunset this evening, with overnight lows mainly in the 40s - a bit cooler than average. This will prompt a quick return to warmer than average temperatures with highs expected to be in the middle to upper 80s for most locations.
812 PM EDT Mon Oct 12 2020 Aviation - Showers and thunderstorms this evening - Cooler after midweek -- Showers and thunderstorms this evening -- Sfc analysis shows a cold front near the western shore of Lake Michigan moving east.
A cold front was moving into western/middle Tennessee this evening with broken line of showers and isolated thunderstorms along this front. Skies have cleared ahead of a cold front moving through western Tennessee. Diegan Chattanooga Airport, TN 54 72 50 78 57 / 20 0 0 0 0 Knoxville McGhee Tyson Airport, TN 55 68 47 76 54 / 30 0 0 0 0 Oak Ridge, TN 53 70 46 76 54 / 30 0 0 0 0 Tri Cities Airport, TN 56 67 42 75 48 / 40 10 0 0 0.
958 PM CDT Mon Oct 12 2020 Satellite data and surface observations indicate that a cold front (related to the mid-level trough lifting northeastward over the Great Lakes region) continues to shift southeastward into the TN Valley this evening. Although low-level moisture convergence along the front would normally be sufficient to generate a narrow band of low- topped showers, broad scale ascent associated with the primary trough is fairly weak this far to the south and has not been strong enough to erode a capping inversion rooted in the 750-800 mb layer. A pronounced clearing trend is expected in the wake of frontal passage, with light-moderate northerly flow advecting a cooler and drier airmass into the region by sunrise.
WV imagery this aftn shows an upper-level trof axis to the east of the Dakotas over the Upper Midwest. Sfc trof/cool front crosses the area this evening into the overnight. High pressure slides sewd quickly late overnight, allowing return flow to commence across wrn portions of the area by midday tomorrow. Another near-normal day of temps tomorrow, with slightly warmer temps across our west compared to the east owing to return flow.
A dry cold front will bring breezy conditions and cooler temperatures.
429 PM MDT Mon Oct 12 2020 WV imagery this aftn shows an upper-level trof axis to the east of the Dakotas over the Upper Midwest. Sfc trof/cool front crosses the area this evening into the overnight. High pressure slides sewd quickly late overnight, allowing return flow to commence across wrn portions of the area by midday tomorrow. Another near-normal day of temps tomorrow, with slightly warmer temps across our west compared to the east owing to return flow.
Plentiful sunshine behind the clouds should allow temperatures to recover to the lower 60s for much of the area. Surface ridging moves east tonight, with low pressure developing over northern Minnesota. Although warm air advection will be ramping up in return flow, moisture return looks rather unimpressive with this low, with mainly an increase in clouds expected. A cold front will then drive through Tuesday morning into the afternoon and make for another breezy day. Following frontal passage, the area will come under the influence of high pressure for late Tuesday.
This activity is along and ahead of a cold front, which is packing gusty northwest winds of 15-30+ mph. What you may notice are the cooler temperatures tonight and tomorrow morning. High temperatures Tuesday are expected to be about 10 degrees cooler than we experienced today. Cold front working its way through the region, bringing brief chances for showers and MVFR cigs.
1037 PM EDT Mon Oct 12 2020 Currently - High pressure centered over the Gulf of Mexico is driving slowly increasing northwest breezes across the Keys and surrounding waters. A fairly dry cold front is riding southward into South Florida with dew points around the lake near 70 and in the mid to upper 70s in South Florida and the Keys. The background ridging through the lower levels has not been supportive of much in the way of convective activity. Short Term Update - High pressure will remain over the Gulf of Mexico. The resulting northwest to north flow will carry the weak cold front through our area during the overnight period. Guidance suggests dew points will dip into the lower 70s, approaching 70. A high pressure system in the Gulf of Mexico is maintaining gentle northwest breezes across Keys waters.
Anomalous easterly flow, resulting from remnants of Delta to the south and high pressure over the Canadian Maritimes, will continue to funnel low level Atlantic moisture into central Pa overnight. Temperatures should remain unchanged overnight, ranging from the upper 40s over the mountains to the low 50s in the valleys. Regional radar is showing a band of showers and thunderstorms ahead of approaching cold front over the Grt Lks. The best forcing, as inferred by model 500-300mb qvec convergence fields, should pass to the north of Pa, so have painted the highest (likely) POPs across the northern counties. Fair weather is expected Tuesday night, as surface ridging builds in with lows in the low-mid 40s.
835 PM EDT Mon Oct 12 2020 A line of showers will move through the region tonight into early tomorrow morning along a fast moving cold front. A quick moving cold front, currently in central Indiana, will cross the region early tomorrow morning. Cooler air filtering behind the front will drop area temperature closer to seasonal norms.
635 PM CDT Mon Oct 12 2020 Cooler temperatures in place this afternoon after what very well may be our last 80+ degree day for awhile yesterday. Even with the cooler temperatures, a dry airmass has allowed relative humidity values to slip to near or inside of critical values. First, winds above the surface will become quite gusty and if this higher momentum air can make it to the surface, may see a period of northwesterly winds gusting in excess of 25 mph.
/issued 240 PM EDT Mon Oct 12 2020/ The main feature of interest through the short-term forecast period will be an incoming cold front tonight into Tuesday.
626 PM CDT Mon Oct 12 2020 Brisk and gusty northwest winds have persisted for much of the day behind a cold front that passed through the area during the early morning hours. A zonal flow aloft will persist into Tuesday with south to southwest surface winds increasing behind that departing ridge axis.
High pressure will be the dominate weather feature over the southwest for the week bringing light winds and well above normal temperatures.
636 PM CDT Mon Oct 12 2020 A cold front moved through the area yesterday bringing cooler, drier air to the region. A high pressure system traveling eastward along the TX and OK border redirects winds to be from the southwest pushing dry desert air from the SW US.
510 PM EDT Mon Oct 12 2020 A line of showers will move through the region tonight into early tomorrow morning along a fast moving cold front. A quick moving cold front, currently in central Indiana, will cross the region early tomorrow morning. Cooler air filtering behind the front will drop area temperature closer to seasonal norms.
Issued by National Weather Service Tampa Bay Ruskin FL 621 PM CDT Mon Oct 12 2020 VFR conditions prevail with high pressure in control. /issued Issued by National Weather Service Houston/Galveston TX/ A cold front has moved through Lufkin and is nearing Fort Polk at 3 pm and should continue to steadily push into the area though may slow somewhat as it moves through the Atchafalaya basin.
Clear skies remain in place over the region with few to scattered low level clouds associated with the dry cold front starting to encroach on our northwestern counties across eastern MS and western AL.
/issued 245 PM CDT Mon Oct 12 2020/ At 17Z, mesoanalysis shows the cold front in the southern reaches of the Big Bend Area, moving at a pretty good clip, having fropa'd KMAF just after 09Z. Otherwise, WV imagery shows the upper trough associated w/this front moving through the MS Valley, with a ridge over SoCal/Baja on the west coast, leaving West Texas and Southeast New Mexico under NW flow aloft. This cold front's effects will be brief, as sfc flow quickly veers back to return flow overnight, and thicknesses increase over the next couple of days.
High pressure will be the dominant weather feature over the southwest for the week bringing light winds and well above normal temperatures.
332 AM CDT Tue Oct 13 2020 06Z surface data has high pressure from the Great Lakes into the southern Plains. The next cold front rain from northwest Minnesota into northwest Nebraska. Dew points were mainly in the 30s across the Midwest with some 40s in the northern Plains behind the cold front.
/issued Issued by National Weather Service Tampa Bay Ruskin FL/ VFR conditions prevail with high pressure in control. /issued Issued by National Weather Service Houston/Galveston TX/ A cold front has moved through Lufkin and is nearing Fort Polk at 3 pm and should continue to steadily push into the area though may slow somewhat as it moves through the Atchafalaya basin.
332 AM CDT Tue Oct 13 2020 Today through tonight: Cool air advection over the ArkLaMiss region in the wake of a departing cold front early this morning is making for a fairly large northwest-southeast temperature gradient with readings ranging from near 70 in the Pine Belt to near 50 over the upper Delta region. Weak high pressure will build over the ArkLaMiss region in the near term.
Weak high pressure building and dry air aloft will limit the amount rainfall through much of the week, but maybe a brief shower or two could develop near the coast/offshore during the early afternoon in southern counties. At the surface, unfortunately, we will continue to experience moist conditions through the rest of the week with high pressure building over the Gulf of Mexico and low level moisture persisting. Afternoon highs will be in the low 90s, but lows remain in the 70s through the period.
This activity is along and ahead of a cold front, which is packing gusty northwest winds of 15-30+ mph. What you may notice are the cooler temperatures tonight and tomorrow morning. High temperatures Tuesday are expected to be about 10 degrees cooler than we experienced today. Cold front has pushed through middle TN taking the showers and clouds with it.
/issued 823 PM EDT Mon Oct 12 2020/ High pressure remains over the Gulf of Mexico this evening with a weak boundary somewhere over south Florida. High pressure will remain over the waters through the week, with no headlines expected.
Satellite data and surface observations indicate that a cold front (related to the mid-level trough lifting northeastward over the Great Lakes region) continues to shift southeastward into the TN Valley this evening. Although low-level moisture convergence along the front would normally be sufficient to generate a narrow band of low- topped showers, broad scale ascent associated with the primary trough is fairly weak this far to the south and has not been strong enough to erode a capping inversion rooted in the 750-800 mb layer. A pronounced clearing trend is expected in the wake of frontal passage, with light-moderate northerly flow advecting a cooler and drier airmass into the region by sunrise.
842 PM PDT Mon Oct 12 2020 Overall, its relatively quiet tonight, in advance of next cold front/area of rain that will be moving across the area late tonight and on Tuesday.
VFR conditions remain throughout the period with few to at best scattered clouds overspreading the area in association with a dry cold front traversing the region from northwest to southeast. Clear skies remain in place over the region with few to scattered low level clouds associated with the dry cold front starting to encroach on our northwestern counties across eastern MS and western AL.
139 AM EDT Tue Oct 13 2020 Aviation - Showers and thunderstorms this evening - Cooler after midweek -- Showers and thunderstorms this evening -- Sfc analysis shows a cold front near the western shore of Lake Michigan moving east.
Drier and cooler air will settle in with high pressure tonight through midweek.
At the surface, trough extends from eastern Nebraska into western KS. However, highs today will be a few degree warmer. This will allow a cold front to surge through the forecast area Wed night. Temps behind the front on Thu and Fri will be much cooler than the last few days, as they only top out in the 60s.
A cold front was moving into western/middle Tennessee this evening with broken line of showers and isolated thunderstorms along this front. ABM Chattanooga Airport, TN 72 50 78 57 80 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 68 47 76 54 78 / 0 0 0 0 0 Oak Ridge, TN 70 46 76 54 79 / 0 0 0 0 10 Tri Cities Airport, TN 67 42 75 48 76 / 10 0 0 0 0.
The synoptic flow will be dominated by the Rex Block off the west coast, resulting from the ridge located poleward of the cut-off low off the Baja Peninsula. Initially quasi-zonal flow aloft in the wake of the departing trough will become more amplified by midweek as the western trough builds into the Gulf of Alaska.
High pressure will build over the region through the middle of the week.