Aikyam-Lab/Synoptic-Bench huggingface dataset:
1053 PM CST Tue Nov 16 2021 (This evening through Wednesday) The main concerns for the short term: strong north winds (35-45 mph gusts), elevated to near critical fire weather conditions (western and west-central Oklahoma and adjacent parts of western north Texas), and high temperatures for tomorrow following the passage of the cold front. Zonal flow at the mid-levels shifts to southwesterly tonight into tomorrow as a trough tracks across southern Canada. The trailing cold front arrives over northwest Oklahoma tonight and is expected to reach central Oklahoma by daybreak. Just prior to daybreak, temperatures will range from the the mid 40s (northwest Oklahoma) to the low 60s (southeast OK).
951 PM MST Tue Nov 16 2021 Cold front associated with an upper low moving through Canada will move through the Tri State area between 00z and 06z tonight. The cooler temperatures will keep afternoon minimum relative humidity at around 20 percent, so no fire weather concerns expected, though fuels remain dry and as mentioned north winds will be gusty through the day.
253 AM CST Wed Nov 17 2021 Water vapor imagery has the upper-level closed low spinning across Saskatchewan into Manitoba today. The associated surface cold front will continue its passage this morning, bringing west-northwest winds and a drier, cooler air mass with it. The upper-level trough axis works its way across the Upper Mississippi River Valley tomorrow, with a slight ridge building into Thursday night. Flurries are again possible especially in our northern counties with the low temperatures.
A series of dry troughs will brush Arizona this week resulting in lower high temperatures and periods of breezy southwest winds. Overnight lows are tracking a bit warmer than previous evenings but only by a few degrees. Wednesday night/Thursday morning low temperatures look to be the chilliest of the week due to radiational cooling as skies clear from the cloud cover associated with the trough just skirting us to the north.
Onshore flow will bring areas of morning low clouds and fog with slightly cooler than normal temperatures through the end of the week. ***From Previous Discussion*** Cooler temperatures have arrived with most areas down 10-15 degrees and some as much as 20 degrees cooler. A strong onshore trend with a trough moving through are the cause, which also has brought a return of the marine layer to many coastal locations. Temperatures similar to slightly cooler than today. One difference tomorrow will be the likely development of some light northeast breezes in the mountains and higher valleys as high pressure develops across NV following the trough passage.
126 AM MST Wed Nov 17 2021 Latest satellite and upper air analysis show a long wave trough centered near the US/Canadian border with the trough axis over the Northern Plains. At the surface a cold front was moving through. Along and behind the cold front wind gusts had ranged from 30-40 MPH or so. Along and ahead of the cold front mid and high clouds were observed. Current wind forecast is on the low side of what would be preferred to account for the limited mixing. Despite being on the low side, wind gusts are forecast to be 20-35 MPH. For highs today went with the cooler side of the guidance spectrum. This lowered the current forecast two or three degrees.
Chattanooga Airport, TN 71 53 65 35 53 / 0 10 70 0 0 Knoxville McGhee Tyson Airport, TN 71 54 66 32 51 / 0 10 80 20 0 Oak Ridge, TN 69 51 62 30 51 / 0 10 80 20 0 Tri Cities Airport, TN 70 47 65 29 48 / 0 0 80 30 0.
1038 PM CST Tue Nov 16 2021 Main challenge is chances for light precipitation across far southeast Kansas ahead of the approaching cold front late tonight, then wind/temperature trends into Wednesday. The associated upper trof axis will sharpen as it moves eastward across the north central conus tonight thru Wednesday. Lift just ahead of the advancing cold front may moisten the lower levels enough to result in patchy drizzle/light rain across southeast Kansas early Wednesday morning. Despite strong drying in the lower levels, there will be a plethora of post-frontal mid/high clouds much of the daylight hours. Clear and colder for Thursday in the wake of the departing upper trof as high pressure at the surface drifts over the area.
1129 PM EST Tue Nov 16 2021 Warm and dry weather for Wednesday will be followed by rain with a Thursday cold front. A warm front will cross the Upr OH early on Wednesday morning. The upper trough/sfc cold front is projected across the region on Thursday, resulting in rain and slowly falling temperature. Precipitation chances will diminish Thursday evening due to increasing subsidence and mid level dry slotting, and the upper trough axis is projected to exit overnight.
Unlike last evening, the surface warm front was well north of the area, and southerly surface winds prevailed at 8 to 12 kt, with a few higher gusts. In locations that have seen the clouds scatter out, temperatures have climbed into the lower to mid 70s while mid to upper 60s are occurring underneath the stratus. Expect highs to be in the lower to mid 70s across the entire CWA as not expecting as much stratus to develop overnight tonight. However by late Wednesday afternoon, showers will begin to occur across Northeast Arkansas and the Missouri Bootheel ahead of an approaching cold front.
1126 PM CST Tue Nov 16 2021 A potent closed low will evolve across southern Canada (Manitoba) tonight. A cold front will surge south through the area on the backside of the upper low this evening. Nevertheless, a considerable drop in temperatures will later tonight into Wednesday behind the strong cold front. Portions of north central Nebraska could stay a few degrees warmer in the lower 20s where winds will stay up somewhat through the night.
315 AM EST Wed Nov 17 2021 High pressure moving out into the Atlantic Ocean will remain in control today with pleasant dry weather continuing. The highest rain chances will be from around the Interstate 4 corridor southward during Thursday afternoon and evening as the upper level energy moves across the area.
Southwesterly flow aloft over our area is expected through the near term period as an upper trough moves east out of the Rockies early Wednesday to near the Great Lakes by late Thursday. This eastward propagating trough will allow a surface cold front to move toward our forecast area from the northwest Wednesday and Wednesday night, before moving east across our area late Thursday (into Thursday evening). The primary base of the upper trough remains to the north of our area, so overall deep layer dynamical forcing still looks like it will be well to our north, with our primary forcing for precipitation being primarily the low level frontal boundary that will be pushing through.
106 AM EST Wed Nov 17 2021 Warm and dry weather for Wednesday will be followed by rain with a Thursday cold front. A warm front will cross the Upr OH early on Wednesday morning. The upper trough/sfc cold front is projected across the region on Thursday, resulting in rain and slowly falling temperature. Precipitation chances will diminish Thursday evening due to increasing subsidence and mid level dry slotting, and the upper trough axis is projected to exit overnight.
The tranquil weather pattern persists through the weekend with cooler temperatures, periods of breezy winds, and no precipitation. Recent satellite loops showed scattered thin cirrus moving across southern Nevada this evening in the northwest flow behind the weak trough that moved overhead today. Cloud cover is currently clearing out of the region this afternoon as a weak trough and associated cold front make their way through from the northwest. Daytime temperatures as of now are a few degrees above average, however remain cooler than yesterday's all thanks to the front. Region-wide north to northeast breezes kick in by Wednesday morning as the trough heads towards the east, allowing a ridge to build in from the west.
1005 PM EST Tue Nov 16 2021 High pressure will prevail through Wednesday. A cold front will cross the area Thursday night, with high pressure returning for the weekend.
Latest guidance continues to depict strong cold front moving into northeast OK around 12z or shortly thereafter, which fits well with going forecast of cooler min temps to the north and west of Tulsa area.
1251 AM EST Wed Nov 17 2021 High pressure will prevail through Wednesday. A cold front will cross the area Thursday night, with high pressure returning for the weekend.
(Today and tonight) A cold front moving through northwestern Oklahoma will arrive to central sections just after sunrise and move through southeastern Oklahoma by late afternoon. By sunrise Thursday north winds will be light with the center of the cooler air mass over the Texas panhandle.
Cloud cover should remain partial and primarily at the high levels. Winds continue to increase ahead of an approaching cold front, especially the near-surface winds.
358 AM EST Wed Nov 17 2021 Above normal temperatures are expected today with a passing warm front. A cold front will return rain to the region tomorrow. A warm front will cross the Upr OH early this morning. Breezy conditions (30-35mph gusts) are likely to occur during the afternoon with boundary mixing of strong vertical winds from an approaching trough. The upper trough/sfc cold front is expected to cross the region on Thursday, resulting in rain and slowly falling temperature.
945 PM MST Tue Nov 16 2021 A diffuse cold front is currently working its way through Wyoming. Much lighter winds are forecast for Wednesday with a colder air mass in place and weak ridging aloft. A weak ridge will slowly move eastward across the forecast area for mainly dry conditions and slightly warmer temperatures on Thursday. This ridge will then be replaced by more zonal flow as a new trough moves onshore in the WA/OR area.
At the surface an attendant deep surface 985mb low was tracking into southeast Saskatchewan, with an occluded front draped south toward another low pressure center over South Dakota. The highest observed gusts in excess of 40 kts at times have been co- located with the deepest pressure falls exceeding -3mb/hr per MSAS over southeast MN. Some fog or drizzle before a cold front sweeps through overnight into early Wednesday. Model guidance has hedged a bit warmer tomorrow, but again cloud cover trends could be an issue. Upper low kicks east and the flow aloft becomes more zonal to end the week.
Winds will relax across S TX by Wednesday evening as a cold front moves southward across the Hill Country. Deepening low pressure to our northwest has resulted in a breezy day today with many locations consistently gusting above 20 knots. A cold front will be approaching the area in the overnight period Wednesday night.
1056 PM CST Tue Nov 16 2021 Subtle ridging aloft has allowed for deep warm air advection to take place over the CWA today as a warm front moves northward through the Middle Mississippi Valley and surface winds veer to be more southerly/southwesterly. This warm November weather will be short lived, as a low pressure system traversing the upper Midwest will swing a cold front across the CWA tomorrow. As the upper-level trough associated with the surface system draws closer, support for precipitation will increase behind the front, leading to post-frontal showers. As this happens, a few snowflakes may mix in across portions of southeastern Missouri, however, it looks like the lower atmosphere may dry out before the thermal profile becomes cold enough for snow flakes to mix in.
Cloud cover should remain partial and primarily at the high levels. Surface pressure gradient is starting to tighten up ahead of the next cold front, so look for winds to gradually increase over the next several hours.
200 AM EST Wed Nov 17 2021 High pressure over the Carolinas will shift offshore today.
951 PM MST Tue Nov 16 2021 Upper low is tracking across southern Canada with a broad trof over the northern high plains. Winds will decrease slightly overnight, then increase again Wednesday morning as a small wave drops into the base of the trof across the forecast area. Cyclonic flow bringing cooler temperatures will remain until Thursday, when a broad upper ridge forms over the northern Rockies.
Water vapor imagery depicting upper trough circulation over southern portions of Saskatchewan/Manitoba that is inducing downstream ridging that will be over our area to begin the period. Breezy and mild conditions can be expect ahead of this as low level thermal ridge and associated warm air advection set up over the region aided by a southwest LLJ at 40+kts. -12C 850mb thermal trough along with 5Kft+ inversion heights will bring a brief period of lake effect snow/rain showers.
We've trimmed highs back to the low 70s for the lower plains, and it may be a stretch to hit near 80 degrees around the Elkhart area with limited hours of heating left this afternoon, although the westerly downslope wind may help a bit. A cold front will move though the area, beginning near Hays by midnight and exiting into Oklahoma probably between 3 and 4 am. Cold advection will be ongoing through much of the day Wednesday, limiting the highs to mainly the 40s and low to mid 50s. The deep upper trough is shown by the Canadian/ECMWF/GFS models to lift the cold air into the northeast U.
Dry northwesterly flow aloft will continue clear dry weather through Wednesday night, but Thursday will be milder as a Pacific upper ridge comes inland.
1104 PM CST Tue Nov 16 2021 Windy conditions continue through much of the work week with cooler temperatures returning tomorrow and Thursday. This evening: A strong low pressure system is moving across southern Saskatchewan with the attendant warm front situated across the central Dakotas through eastern Nebraska. Temperatures behind the warm front have climbed well into the upper 50s to mid 60s, with a few 70s across far southeastern South Dakota. Overnight lows will fall into the low 20s and highs Thursday will struggle to get above freezing as strong CAA continues to filter into the region.
Pre-frontal trough will shift winds out of the W/NW from north to south with fropa expected b/w 18-20z at the SE NM terminals, KMAF/KINK and a few hrs later at KFST/KPEQ. (Today through Thursday afternoon) A strong upper low over Manitoba this morning will have a broad trough extending southward down along the Rockies. This trough will drag across the plains today with high pressure building in from the west this evening and Thursday. A cold front will blow into northern counties before noon and pass to the Pecos River by evening. Tonight will see freezing temps across the northern counties but in areas that have already had a freeze. Thursday will be much cooler with highs in the 50s.
306 AM EST Wed Nov 17 2021 Above normal temperatures are expected today with a passing warm front. A cold front will return rain to the region tomorrow. A warm front will cross the Upr OH early this morning. Breezy conditions (30-35mph gusts) are likely to occur during the afternoon with boundary mixing of strong vertical winds from an approaching trough. The upper trough/sfc cold front is expected to cross the region on Thursday, resulting in rain and slowly falling temperature.
1157 PM CST Tue Nov 16 2021 High pressure is east of Arkansas and low pressure is in the Plains. This low will bring a cold front through Arkansas Wednesday afternoon and eveninig. Tonight Through Thursday Upper level trof will be dropping down across the Plains and moving into the Great Lakes region thru the short term period; Arkansas will be on the southern periphery of this system. At the surface, a warm and moist flow will continue until a cold front begins to sweep into the area later tomorrow. Clearing will occur rather quickly behind the front, and mostly clear conditions will prevail on Thursday, with notably cooler temperatures.
Cold front Thursday with the next chance for widespread precipitation.
Given mostly clear skies, temperatures will quickly drop this evening into the low to mid 30s across most lowland locations. High pressure over the area will shift inland on Wednesday.
A cold front will spill into the far northeastern corner of New Mexico early Wednesday morning, advancing farther across all of the eastern half of the state through the afternoon with additional batches of high clouds arriving. Temperatures will be considerably cooler Wednesday across the eastern plains, but only slightly cooler central and west. Cooler air will attempt to push westward Thursday, as more high clouds drift overhead.
544 AM CST Wed Nov 17 2021 (Today and tonight) As of this writing, a mild airmass was in place across Texas and southern Oklahoma, with temperatures in the low to mid 60s. The well-advertised cold front had just reached the Oklahoma and Texas Panhandles, with temperatures in the low 50s behind it. The front should reach the Big Country, including Abilene and Sweetwater, by about noontime, which should cap off high temperatures there around 1 or 2pm in the low to mid 70s.
As advertised, the colder air mass continues to work into the region as the large trough slides eastward. With just a few high clouds tonight, expect somewhat efficient radiational cooling to exacerbate minimum temperatures under the cooler air mass.
However, wind gusts this afternoon may briefly approach 30mph in advance of a cold front, particularly across extreme NE Arkansas and the Bootheel. An upper low and surface cold front will advance east today bringing rain back to the forecast. The cold front is forecast to move through tonight with the bulk of precipitation occurring as post- frontal rain. A brief period of drier and cooler conditions are expected behind the front as high pressure builds in from the west.
Stacked low pressure system will track across southern Manitoba today with its tight pressure gradient bringing strong winds to the region and some wrap around snow showers especially across NW MN this afternoon. Wind speeds this morning are gusting the highest across the Devils Lake basin with speeds generally from 40 to 50mph.
Before sunrise this morning, a cold front had moved through northeastern Kansas. Much cooler and drier air was noted in sfc obs behind the front.
Key Messages: 1) Gusty south winds followed by gusty northwest winds today as a cold front moves through. Winds: A cold front will move through the area from NW to SE today. Precipitation: Light rain will develop along and behind the front before it moves into the area as an upper trough and jet move into the region.
High clouds will be moving across the area today associated with broad trofiness moving across the intermountain west. High temperatures will be cooler today, versus the past 5 days, but still above normal for mid-November.
Winds will stay on the high side through the morning, then slowly diminish throughout the afternoon and evening. For most of Montana, the high winds are behind us, but Livingston, being the true Windy City of the US, will start to see gusts 35-45 mph again tonight and through Thursday and gap flow looks to set up in the Paradise Valley once again. Vertz General ridging pattern over the western U. and persistent deep trof over the eastern U. West facing mountain locations will see periods of light snow, but it won't make it down to the lower elevations. A couple of disturbances will reinforce cooler air, keeping seasonal temperatures in place. High temperatures will range from the lower 50s to the upper 30s through the extended, with the coolest readings looking to arrive just before Thanksgiving.
Isolated to scattered showers associated with the aforementioned cold front will begin across far northwest GA around 12z Thursday, spreading eastward through the day. CAMs depict the showers tapering off after sunset as the cold front pushes through and drier air moves in behind it. Martin A cold front should be making its way through GA overnight Thursday.
933 AM EST Wed Nov 17 2021 Dry high pressure with only cirrus clouds across forecast area this morning. High pressure will move east allowing a return flow of moisture by 12Z Thursday with showers and isolated thunderstorms moving into far South Florida.
503 AM CST Wed Nov 17 2021 (Today and tonight) A cold front moving through northwestern Oklahoma will arrive to central sections just after sunrise and move through southeastern Oklahoma by late afternoon. By sunrise Thursday north winds will be light with the center of the cooler air mass over the Texas panhandle.
Upper trough in the Plains is still developing and strengthening this morning as it moves east towards the Midwest. Cold front will move in early Thursday morning and should be through the mid state by noon or so.
550 AM CST Wed Nov 17 2021 Water vapor imagery has the upper-level closed low spinning across Saskatchewan into Manitoba today. The associated surface cold front will continue its passage this morning, bringing west-northwest winds and a drier, cooler air mass with it. The upper-level trough axis works its way across the Upper Mississippi River Valley tomorrow, with a slight ridge building into Thursday night. Flurries are again possible especially in our northern counties with the low temperatures.
447 AM CST Wed Nov 17 2021 A high pressure ridge dominates the eastern seaboard of the CONUS this morning. with the highest winds this afternoon in southeastern AR and west central/northwestern MS. A cold front is on approach from the low moving into the mid Miss Valley today, and rain chances creep into the forecast overnight.
The surface gradient will gradually loosen this afternoon as high pressure moves into the area. High pressure tonight will bring clear skies and colder temperatures.
Another quiet day as zonal flow sits overhead and high pressure sits to our east. Flow today will have a south to southeast component, ushering warmer air and moisture into the region.
And similar conditions can be expected Thursday with slightly cooler temperatures, and wind speeds about 5 mph lighter.
(Today and tonight) As of this writing, a mild airmass was in place across Texas and southern Oklahoma, with temperatures in the low to mid 60s. The well-advertised cold front had just reached the Oklahoma and Texas Panhandles, with temperatures in the low 50s behind it. The front should reach the Big Country, including Abilene and Sweetwater, by about noontime, which should cap off high temperatures there around 1 or 2pm in the low to mid 70s.
403 AM CST Wed Nov 17 2021 We are now behind the cold front that pushed across the area yesterday evening. Cold air advection from the north will keep temperatures much cooler than the past couple of days as well, with highs only reaching into the mid to upper 40s in most places.
539 AM CST Wed Nov 17 2021 We are now behind the cold front that pushed across the area yesterday evening. Cold air advection from the north will keep temperatures much cooler than the past couple of days as well, with highs only reaching into the mid to upper 40s in most places.
Mostly sunny today, but cooler, with highs this afternoon only reaching mid 40s to low 50s.
High pressure ridging builds across the Northern Rockies the rest of today with light winds, seasonable temperatures, and some welcome sunshine.
A cold front will bring showers and isolated thunderstorms this afternoon and overnight. High pressure will build in behind the front. Today Through Thursday Night Upper low pressure is over the northern Plains while weak high pressure is over the eastern U. The upper low will traverse southern Canada and the Great Lakes region tonight and Thursday. An upper ridge will move into the Plains by Thursday night. A cold front will move through the state this afternoon through tonight.
309 AM CST Wed Nov 17 2021 Key Messages: 1) Gusty south winds followed by gusty northwest winds today as a cold front moves through. Winds: A cold front will move through the area from NW to SE today. Precipitation: Light rain will develop along and behind the front before it moves into the area as an upper trough and jet move into the region.