Aikyam-Lab/Synoptic-Bench huggingface dataset:
253 AM MST Fri Mar 5 2021 With the closed low well to the southeast across Oklahoma this morning, the H5 ridge will return to prominence today, bringing even warmer temperatures across western and central Wyoming. The ridge starts getting pinched to the east by an approaching trough on Saturday. The ridge will also bring the warmest day of the year, with widespread 50s and 60s across the lower elevations, with an outside chance at 70 around Buffalo. Western valleys will attempt to reach the 40s, depending on how persistent the remaining cold pool holds tonight, and lower clouds with the approaching trough. The trough will arrive across the western mountains during the afternoon, bringing a slight chance for precipitation, mainly for the higher elevations.
Expect much of the same conditions to continue today with high temperatures in the low 40's to mid 50's across most locations. Diegan Chattanooga Airport, TN 36 56 33 58 32 / 10 0 0 0 0 Knoxville McGhee Tyson Airport, TN 32 52 30 53 29 / 0 0 0 0 0 Oak Ridge, TN 32 53 30 53 29 / 0 0 0 0 0 Tri Cities Airport, TN 27 49 26 48 25 / 0 0 0 0 0.
1120 AM CST Fri Mar 5 2021 Area of rain and occasional thunder will continue to slowly shift east and southeast across the fa today as the upper low continues to slowly move across the area.
145 PM CST Fri Mar 5 2021 High pressure will slowly drift through the Midwest this weekend, keeping our dry weather pattern going for a few more days.
1045 AM MST Fri Mar 5 2021 A transitory ridge of high pressure will slide overhead today in the wake of yesterday's system. The ridge axis will settle over western Colorado overnight before shifting east of the Continental Divide by daybreak Saturday.
The low level cold advection will continue into Saturday as the mid level system pulls away.
Highs will be near normal in the 70s, with high pressure to the north keeping relatively light north to northeast winds across the region around 5 to 10 mph. Cold front across north Florida will gradually slide southward through the area into tonight, with increasing cloud cover expected. High pressure will bring dry and calm conditions.
Low clouds behind this cold front will push southward, potentially impacting KHOB by this afternoon. MVFR CIGS are possible beginning at all terminals around 14z as the low clouds move into the region. /issued 224 AM CST Fri Mar 5 2021/ In wake of an upper low another windy day is ahead for most all of the area. Initially winds will be nw, but transition to ne by mid afternoon and high temps will be 10 to 20 degrees cooler w-e, respectively, than previous 24hrs. Tue-Wed be the warmest days with an amplified low-level thermal ridge, especially across the wrn areas. Either Thur or Fri a Pacific front looks to move across the area favoring a bout of wind and cooler temps.
Temps are running a bit cooler today than yesterday as previously advertised, and highs for this afternoon appear on track for lower 60s north to lower 70s south. We've left mention of sprinkles in the forecast due to this possibility, but otherwise, we'll see mostly cloudy and cooler conditions as northerly surface flow becomes dominant across the region.
The closed cyclone that brought widespread beneficial rainfall to SW KS was weakening to an open trough over eastern Oklahoma at midday. Saturday will feature full sunshine and few if any clouds, as ridging amplifies aloft. Afternoon temperatures in the lower to mid 60s are expected, although evaporation from topsoils may shave 2-3 degrees off this forecast in places.
Highs will be a bit cooler with mid 60s across the Hill Country to near 70 across the southwest counties thanks to dense cloud coverage. On Saturday evening into the overnight hours, clouds begin to increase areawide with overnight lows in the lower 40s across the Hill Country to near 50 along the Rio Grande.
245 PM CST Fri Mar 5 2021 Skies are cloudy across much of the Mid-South this afternoon with temperatures ranging from the mid 40s to the lower 60s. The rain is due to an upper level low over eastern Oklahoma. This upper level low will move southeast and weaken through tonight.
1007 AM EST Fri Mar 5 2021 Chilly high pressure will extend across the central Appalachians and southern middle Atlantic through the weekend. Meanwhile, a compact mid/upper level low over the Southern Plains will devolve into an open wave trough as it moves into the Deep South this evening and overnight. The cool Canadian high pressure will also keep highs today in 50-55 range, coolest NE, warmest SW, which is about 5- 10 degrees below normal.
Current satellite shows several bands of cirrus spilling overhead from a low pressure system over the TX/OK. Today's highs expected to be a bit cooler than yesterday with most areas seeing mid to upper 40s. Broad upper ridging is sitting over the Lower 48. Within this ridge, a stacked low pressure system is generating precipitation to areas near Kansas and Oklahoma, but as we move through the day, the low pressure system will begin to disband as it moves towards the Lower Mississippi Valley. Winds go near calm as the center of high pressure nears the Lower Ohio Valley from the north. Expect a chilly weekend as we start off with a full-latitude east coast upper trof, and an upper ridge building over the Plains.
The synoptic pattern at the surface will be characterized by upstream troughing, which will cause southerly winds at the surface to prevail.
1108 AM EST Fri Mar 5 2021 Current satellite shows several bands of cirrus spilling overhead from a low pressure system over the TX/OK. Today's highs expected to be a bit cooler than yesterday with most areas seeing mid to upper 40s. Broad upper ridging is sitting over the Lower 48. Within this ridge, a stacked low pressure system is generating precipitation to areas near Kansas and Oklahoma, but as we move through the day, the low pressure system will begin to disband as it moves towards the Lower Mississippi Valley. Winds go near calm as the center of high pressure nears the Lower Ohio Valley from the north. Expect a chilly weekend as we start off with a full-latitude east coast upper trof, and an upper ridge building over the Plains.
Upper level low pressure will continue moving to the east allowing drying in the mid and upper atmosphere overnight, while upper level high pressure will move overhead on Saturday.
Southeast Michigan resides within the influence of the surface anticyclone as cold air between 3.
A trough axis is propagating SE towards the Gulf Coast. As this occurs, an area of low pressure is expected to generate over the Gulf of Mexico, and then propagate eastward ahead of the upper-level feature into our area tomorrow, leading to unsettled weather for Saturday.
1039 AM EST Fri Mar 5 2021 Currently - High pressure extending southeastwards through the southeastern United States and eastern Gulf of Mexico, along with a small scale low pressure center over the northern Bahamas is producing moderate north to northeasterly breezes across the Keys and surrounding waters. Short Term Update - The ridge to our north will spread southeastwards this afternoon and the micro low over the Bahamas will slide southeastwards. While the long wave trough remains aligned along the Atlantic Coast, the surface anticyclone will remain firmly in control of weather. The combination of a ridge over the southeastern United States spreading further southeastwards and a small scale low over the northern Bahamas shifting south will result in moderate north to northeasterlies relaxing and shifting northeast to east through the afternoon.
The exception has been southern middle TN, which has stayed more in the lower 50s. As this occurs, stronger cold air advection should drop temperatures into the lower 40s around midnight before bottoming out in the lower 30s in Tennessee and mid to upper 30s further south. It should be slightly cooler, despite more sunshine, as strong cold air advection counters daytime heating. Highs in the lower to mid 50s are expected in most areas.
206 PM CST Fri Mar 5 2021 The cooler air arrived today and along with it plenty of wind and blowing dust.
1111 AM CST Fri Mar 5 2021 (Today and tonight) Windy and cooler conditions will affect the area today. An upper level low was making its way southeast through western Oklahoma as of 230 this morning. This low will continue moving east/southeast today into Arkansas, bringing precipitation mainly to areas of Oklahoma, and parts of Texas to our east. The main impact of this low for our area will be a cold front and gusty north/northwest winds. We will also be significantly cooler with highs ranging from the lower 60s north of I-20, to around 70 along the I-10 corridor.
242 PM EST Fri Mar 5 2021 Synopsis/Discussion/Marine - High Pressure and Fair Weather This Weekend - Wet Weather Mid-Late Week as Low Pressure Moves Through - High Pressure and Fair Weather This Weekend The tranquil weather of the past few days continues through the weekend as surface ridging holds sway.
This rain should remain south of our forecast area for the rest of the afternoon as the upper level low weakens as it shifts eastward with just mid-high level cloudiness mainly across southeast MO and southwest IL.
Satellite imagery shows high clouds increasing across the area ahead of an upper level low that will pass to our southwest today. A low pressure system will pass to our south later today and this evening.
141 PM MST Fri Mar 5 2021 With a reported >100 acre fire in Richland County yesterday and fuel reports being abnormally dry, went ahead and issued a Fire Weather Watch for tomorrow with the approaching cold front. Otherwise, an upper ridge parked over the area today has brought the warm and dry conditions to the area. This ridge will slowly drift east and allow a strong cold front to push east across the CWA Saturday Night.
Satellite imagery shows high clouds increasing across the area ahead of an upper level low that will pass to our southwest today.
As the upper level low over the lower Mississippi River Valley moves east, the upper level ridge over the Rockies will slowly edge east.
That high-amplitude, longwave trough will maintain cold and dry weather, with exception for aforementioned flurries, through the weekend.
Mid-level clouds will gradually clear through the late morning and early afternoon, keeping highs capped in the lower 50s to near 60.
Today and Tomorrow: The mature cyclone currently over the Southern Plains continues to move ESE towards the Southeastern US, and is slowly releasing its grip on local surface winds. Tomorrow afternoon, winds are expected to turn southerly as a warm front pushes northeastward out of central Kansas.
1220 PM EST Fri Mar 5 2021 A dry cold front brings cooler air across the Carolinas Friday through the weekend, while low pressure passes southeast of the area with a few clouds possible through Saturday.
1157 AM EST Fri Mar 5 2021 The region will remain between strong low pressure over Eastern Canada and high pressure building southeast from central Canada into the Upper Midwest to start the weekend.
/Tonight through Saturday Night/ A broad upper trough moving from Oklahoma into Arkansas will continue to evolve into a positively-tilted trough while moving across the Mississippi River tonight. The passage of the upper trough axis tonight should help to move the rain south and east of the forecast area, and the increasing subsidence should also bring the precip to an end.
Guidance somewhat split in regard to how quickly CIGS improve behind the low, but opted to go for gradual improvement to VFR by Saturday morning. As this disturbance moves across our region, increasing cloudiness this morning with increasing chances of showers and a few thunderstorms is expected later this morning, with the highest chances this afternoon and evening for the area. Behind this system will be building high pressure, a return to slightly cooler temperatures, and no precipitation expected for the remainder of the weekend.
146 PM MST Fri Mar 5 2021 20z surface analysis had lee trough from central MT into eastern WY. Water vapour depicted upper ridge over the Rockies moving eastward into the plains. Fantastic Friday weather overall with some thin cirrus overtopping the ridge into the CWA. Low level thermal ridge peaks over the CWA. Lee trough moves east as a warm front in response to weak low formation over eastern MT. Pressure falls along warm front 3-5mb/3hr into eastern MT/western ND.
SHORT TERM (Now through Saturday Night): Pacific cold front moving through the western half of the CWA beginning to lower humidity and turning winds to the northwest at moderate speeds. The front is expected to clear the lower Texas coast this evening with some limited cooling an initial weak wind shift. Once a 500mb low over Oklahoma/N Texas opens up and moves east later tonight and Saturday cooler High pressure filters south strengthening the winds and increasing the cold air advection. Surface ridging shifts later Saturday night but not before the low level humidity decreases sufficiently to allow for some partial clearing for another cool night with lows dipping into the upper 40s north and west and low to mid 50s for the RGV.
Area of rain and occasional thunder will continue to slowly shift east and southeast across the fa today as the upper low continues to slowly move across the area. (This evening through Saturday) Rain will continue to gradually end across the fa the rest of this afternoon as the upper low continues to move eastward. Warmer temperatures are expected tomorrow with highs in the 60s.
Abundant cloud cover over north and central sections will keep temperatures a bit cooler today, but more sun in the south will allow for maximums in the lower 70s. The bulk of the rain will fall across the Highway 84 corridor and south, but some light rain will be possible up to the I-20 corridor this evening.
Temperatures have been several degrees cooler today than 24 hours ago with temperatures in the 40's to mid 50's. High pressure to the north will keep north winds in place and will continue to advect lower dewpoints into the area.
Expect overnight lows in the low to mid 40s for most locations. High temperatures will be below normal, in the low to mid 60s. (Saturday night through next Friday) Due to the recent cold frontal passage, cool and dry conditions will continue into this weekend.
140 PM EST Fri Mar 5 2021 Chilly high pressure will extend across the central Appalachians and southern middle Atlantic through the weekend. Meanwhile, a compact mid/upper level low over the Southern Plains will devolve into an open wave trough as it moves into the Deep South this evening and overnight. The cool Canadian high pressure will also keep highs today in 50-55 range, coolest NE, warmest SW, which is about 5- 10 degrees below normal.
1105 AM CST Fri Mar 5 2021 This morning the middle Mississippi Valley is sandwiched between cool and dry high pressure building into the Great Lakes and a low over central Oklahoma with a areas of showers and storms arcing from central KS into eastern OK. We'll remain between these features today, with the low drawing warm and moist air into the region from the south and the high advecting in cooler and drier air from the east. The low will manage to at least build some cloudiness into the region, which coupled with the easterly flow at the surface, will keep temperatures a bit cooler than what we've seen the last few days.
RMS A strong upper ridge will continue to dominate our weather pattern to end the week. Thus, wind highlights for the Livingston-Nye corridor are not anticipated with the highest gusts only expected to be in the 35-45 mph range by Saturday afternoon.
Cloud cover will increase tonight as a weak low pressure system tracks to the south of the area Saturday.
Expect much of the same conditions to continue today with high temperatures in the low 40's to mid 50's across most locations. Otherwise, just increasing high and mid clouds across the region as upper low passes by to the south tonight. CD Chattanooga Airport, TN 58 36 56 33 58 / 0 10 0 0 0 Knoxville McGhee Tyson Airport, TN 53 32 52 30 53 / 0 0 0 0 0 Oak Ridge, TN 53 32 53 30 53 / 0 0 0 0 0 Tri Cities Airport, TN 48 27 49 26 48 / 0 0 0 0 0.
High and mid level cloudiness will thicken and lower through the night as the upper low currently over TX approaches the Gulf.
Temperatures this morning are cooler than yesterday with readings in the mid 40s to mid 50s. At the surface, a backdoor cold front is draped across the Mid-South and will continue a gradual shift south before washing out along the Gulf Coast this weekend.
104 PM EST Fri Mar 5 2021 The region will remain between strong low pressure over Eastern Canada and high pressure building southeast from central Canada into the Upper Midwest to start the weekend.
Strengthening high pressure will be centered to the northwest this period. West to east oriented cold front will slowly move south of the forecast area this evening. Mid to high cloudiness will stream east across the area from approaching low pressure this evening. This low will move east southeast across the gulf Tonight, and across south FL late Saturday. Best chance for precipitation along and north of the low track. Rain chances will be on the low side with this event across SE GA, with dry air from high to the northwest suppressing the rain further south. As the low tracks further to the east southeast Saturday night, the rain chances will end from northwest to southeast across area. Due to onshore flow pattern across the relatively warmer coastal waters, lows Tonight will run a little above normal.
/Issued 1200 PM CST Fri Mar 5 2021/ /Through Saturday/ An occluding low pressure system is drifting through the forecast area with a dynamic upper-level storm system. The associated cold front has roughly reached the I-35 corridor as of midday, and will continue east/southeast through the rest of this afternoon. Even after the frontal passage, modest lingering elevated instability could result in an isolated storm mainly across East Texas this evening as the main upper low drifts overhead. The arrival of cooler/drier post-frontal air will allow overnight lows to fall into the low to mid 40s tonight.
1005 AM EST Fri Mar 5 2021 The region will remain between strong low pressure over Eastern Canada and high pressure building southeast from central Canada into the Upper Midwest to start the weekend.
1040 AM MST Fri Mar 5 2021 With the closed low well to the southeast across Oklahoma this morning, the H5 ridge will return to prominence today, bringing even warmer temperatures across western and central Wyoming. The ridge starts getting pinched to the east by an approaching trough on Saturday. The ridge will also bring the warmest day of the year, with widespread 50s and 60s across the lower elevations, with an outside chance at 70 around Buffalo. Western valleys will attempt to reach the 40s, depending on how persistent the remaining cold pool holds tonight, and lower clouds with the approaching trough. The trough will arrive across the western mountains during the afternoon, bringing a slight chance for precipitation, mainly for the higher elevations.
207 PM CST Fri Mar 5 2021 Much cooler day today versus yesterday with current temperatures only in the mid 40s to low 50s. High clouds have spread across the whole area this afternoon in association with an upper level low passing to our southwest.
East winds will veer to the south tonight as high pressure expands over the CWA. An upper ridge, currently evident on water vapor imagery over the western CONUS, will progress eastward over the central US this weekend.
A weak cold front is still on track to push through the region on Saturday. This front will be the start of the Northern Rockies becoming more seasonal with cooler temperatures and periods of rain/snow showers each day.
Warmer temperatures and sunny skies will prevail today. A minor storm system will bring light snow to the high Sierra and gusty winds across portions of the Mojave Desert Saturday.
Overall, high pressure is firmly in place, but there are still some clouds associated with pockets of moisture embedded in the air mass and likely a lot of evaporation/sublimation occurring.
Bumped up temperatures a few degrees, trending toward the higher guidance for Saturday. The combination of strong southwest winds and 850 temps around 10 to 15 degrees by Saturday afternoon,should see widespread sfc temps in the low 70s during peak heating. Did go above guidance however across southwest Nebraska to account for mixing up to 800mb guidance was a little on the low end.
An area of low pressure to develop tonight in the Gulf, then move over the FL peninsula tomorrow, bringing widespread showers with widespread MVFR to locally IFR cigs/vsby aft about 15Z through the rest of Saturday afternoon. A trough axis is propagating SE towards the Gulf Coast. As this occurs, an area of low pressure is expected to generate over the Gulf of Mexico, and then propagate eastward ahead of the upper-level feature into our area tomorrow, leading to unsettled weather for Saturday.
552 PM CST Fri Mar 5 2021 For the 00Z TAFs, south to southwest surface winds will increase and become gusty again Saturday afternoon at the terminal sites in response to a tightening pressure gradient associated with a developing surface trof of low pressure over ern CO and ern NM. Low pressure system continues to exit to the east that provided the rain/mist this morning and low clouds through the day. Weak high pressure will settle over the Panhandles tonight, with mostly clear skies.
Gusty northwest winds behind the initial cold front should shift to a more northeasterly direction as a second front back-doors its way through the region.
543 PM CST Fri Mar 5 2021 (This evening through Saturday) Rain will continue to gradually end across the fa the rest of this afternoon as the upper low continues to move eastward. Warmer temperatures are expected tomorrow with highs in the 60s.
With the cold front currently pushing across the CWA, clearing skies in its wake should be short-lived (in a sense) as wrap-around clouds associated with the main upper low builds back into the region early this evening. Otherwise, the ongoing bands of scattered light showers just ahead of the cold front may be it in terms of measurable rainfall the next few days for most locations. Cooler/drier air should be filtering down into SE TX tonight through tomorrow. Temperatures tonight/tomorrow will be a bit cooler than we have had these last couple of days. in the lower and mid 50s elsewhere. However, with the high settling over the Southern Plains tomorrow night, overnight lows may be a smidge cooler: ranging from around 40 north.
414 PM MST Fri Mar 5 2021 20z surface analysis had lee trough from central MT into eastern WY. Water vapour depicted upper ridge over the Rockies moving eastward into the plains. Fantastic Friday weather overall with some thin cirrus overtopping the ridge into the CWA. Low level thermal ridge peaks over the CWA. Lee trough moves east as a warm front in response to weak low formation over eastern MT. Pressure falls along warm front 3-5mb/3hr into eastern MT/western ND.
304 PM CST Fri Mar 5 2021 (Issued 302 PM CST Fri Mar 5 2021) Tonight through Saturday night: A weak cold front will sink southward tonight, bringing light northerly winds with it. Clouds will increase for a time before daybreak, but high pressure will ultimately win, and skies will clear out again tomorrow. Temperatures will be slightly cooler on Saturday, owing to the light northerly winds.
359 PM MST Fri Mar 5 2021 Yesterday's low pressure system will continue moving southeast across northern Texas this afternoon. As the system moves father away from the Tri-State area, an upper level ridge stretching across the Great Basin will push across the Great Plains today through Saturday night.
Deep troughing currently exists across eastern North America, with the upper-level low centered over eastern Quebec. Increased cloud cover and light WNW wind will keep temperatures up a few degrees warmer tonight than previous, with lows generally in the 20s (teens- typically colder locales). That high-amplitude, longwave trough will maintain cold and dry weather, with exception for aforementioned flurries, through the weekend.