Aikyam-Lab/Synoptic-Bench huggingface dataset:
Moist unstable airmass to continue and with little change in position of upper ridge, expect more diurnal storms to develop at least across AR/LA portions of the area. /issued 935 PM CDT SUN AUG 7 2016/ Water vapor imagery shows a disturbance rounding the edge of the ridge this evening. as several locations are falling into the lower and mid 70s with the rain.
This afternoon a weak upper level trough was located across northeast KS and extended southwest into south central KS. This weak upper trough will move east into northern MO as it fills. Tonight through Monday, the broad upper ridge across the southern plains will amplify across KS into the northern plains. North of the boundary highs only reached the lower 70s across north central KS to around 80 across the southeast counties. Monday afternoon looks mostly dry with the center of the upper level ridge axis shifting eastward across the CWA. Afternoon high temperatures should reach into the lower to mid 80s with more insolation during the afternoon hours. The mid-level ridge will be building northward across the central U.
1102 PM CDT SUN AUG 7 2016 Few concerns in the short term with high pressure overhead at mid afternoon. The high will drift east to the lower Great Lakes by Monday evening with a dry forecast in place. One was to go a little cooler tonight across portions of central Minnesota and west central Wisconsin, mainly north of I-94. Also, highs on monday ended up a degree or two cooler with around 80 to the lower 80s forecast.
Overnight lows generally in the low-mid 50s, except locally in the upper 50s across the Champlain Valley. High pressure begins building in on Monday and the pleasant weather continue Monday with dry weather expected.
Lows tonight will be the coolest north of I-64 where combination of clearing and dewpoints in the U50s will allow for temperatures to dip into the lower 60s. An upper level ridge will build over most of the country and allow high pressure a the surface to slide off the coast and dissolve the wedge lingering east of the Appalachians early in the period. Deep southeasterly flow will start to bring warmer temperatures back into the region, and keep deep moisture anchored over the region. This will keep showers/storms with locally heavy rain in our forecast especially along the southern Blue Ridge.
18z GFS continues to indicate mid level vorticity affecting mainly southeast portions of the forecast area collocated with an area of upper level divergence on the back side of the upper level low offshore that will be moving toward the east coast by Monday afternoon.
SE TX to remain between the persistent upper ridge/subsidence to the west and deeper moisture/lingering disturbance over the east. Instead of a deepening long-wave upper trof from the west. models are now going with a combination of an upper trof and an associated frontal boundary from the NNW and the westward movement of that system that has been lingering in over the far NERN Gulf.
624 PM CDT SUN AUG 7 2016 205 PM CDT Upper ridge will strengthen across the region allowing for primarily dry conditions along with a warming trend through midweek.
1011 PM EDT SUN AUG 7 2016 A cold front will become stationary over Eastern North Carolina through Monday Night.
845 PM EDT SUN AUG 7 2016 A warm front will move northward into central NC tonight and Monday.
01z RAP takes this high level cloud cover slowly to the south overnight as a mid/upper level trough propagates east through the Great Lakes.
1047 PM EDT SUN AUG 7 2016 High pressure will build in from the west overnight. A weak trough of low pressure will cross the region on Monday.
Chattanooga Airport, TN 75 91 74 92 / 60 60 40 50 Knoxville McGhee Tyson Airport, TN 72 91 73 90 / 30 50 30 40 Oak Ridge, TN 72 90 73 91 / 30 50 30 40 Tri Cities Airport, TN 71 89 69 88 / 30 50 30 30.
800 PM EDT SUN AUG 7 2016 A large area of high pressure over the upper midwest will slide SE across the Great Lakes and move off the Mid Atlantic Coast Monday night.
1151 PM CDT SUN AUG 7 2016 Weak upper low is currently seen in water vapor moving east across northeast Missouri. With more cloud cover lows tonight should be a couple of degrees warmer than the previous night.
1019 PM EDT SUN AUG 7 2016 High pressure will maintain warm and dry weather until humidity and rain chances return by mid week. A persistence forecast was used through the near-term period as high pressure remains the dominant feature.
935 PM CDT SUN AUG 7 2016 Water vapor imagery shows a disturbance rounding the edge of the ridge this evening. as several locations are falling into the lower and mid 70s with the rain.
A weakness or col in the upper level pattern continues between a Texas/Southern Plains Ridge and a subtropical Atlantic ridge continues. Satellite imagery and 700mb analysis indicates a broad closed low continues to reside near the I-75 and I-10 intersection. Small craft exercise caution conditions expected for several days over the coastal waters with elevated SSW flow on the east side of an area of low pressure meandering over the NE Gulf Coast region.
Just some stratocumulus over the Cascades in response to onshore flow with upper low moving into the Pacific northwest. Low temps a little cooler than the past few night with 40s and 50s. The upper low will move slowly east into the forecast area Monday. Temps at 500mb are -19C at the center of the low so a fair amount of instability expected during the afternoon.
946 PM CDT SUN AUG 7 2016 Weak upper low is currently seen in water vapor moving east across northeast Missouri. With more cloud cover lows tonight should be a couple of degrees warmer than the previous night.
746 PM EDT SUN AUG 7 2016 A moist and moderately unstable airmass along with a weak upper low spinning over the southeast will continue to support scattered to numerous convection through the evening. Low pressure over north FL may move little during the short term. Path of FL low will affect rainfall totals across the area and at this time the evolution of the low is uncertain. BDL The broad low pressure system centered just west of the CWA should stagnate through the vast majority of the fcst period allowing for an abnormally moist and tropical airmass with PWATs in 2.
1145 PM CDT SUN AUG 7 2016 Warmer and more humid conditions through mid week is the main story of this forecast, with small precipitation chances through the period requiring some consideration as well. Shallow ridge axis is forecast to progress east tonight and Monday, and will be east of our area by Monday night.
Confidence is low, but KDHT could see some flurries or light freezing drizzle early Friday morning for a few hours. /Issued 151 PM CST Thu Dec 8 2016/ A short wave trough over northern and northeastern New Mexico will impact the western Panhandles tonight. Some very light snow or light freezing drizzle possible across the western portions of the forecast area between 06Z and 18Z Friday.
General amounts in the 2 to 4 inch range expected over the central mountains by early Fri, with perhaps 4 to 6 inches across the higher peaks and west facing slopes. Overall, temps will warm substantially (15-25f) most locations as warmer pacific air pushes eastward across the state, and a few 50f readings may reappear in the lee of the southern sangres around Trinidad. Exception to the quick warm-up may be portions of the lower Arkansas Valley from Pueblo eastward, as surface pressure falls south of La Junta keep a weak easterly gradient through the valley into the afternoon.
At 2 am this morning, flat upper ridging was building into the desert southwest, with dry and subsident northwest flow in place over Arizona and SE California per the latest plot and raob data. Despite the increase in high clouds today we should see temperatures continue to warm as heights/thicknesses rise and the warmer lower deserts will top out in the low 70s.
Weak cold advection today will keep temps in the lower 20s.
311 AM CST Fri Dec 9 2016 Satellite loops and upper air data display northwest flow aloft over midwest, with the upper trof drifting to the east. Upper trof continues to provide enough support to trigger flurries over area, that should last into the mid morning hours, when trof moves through and weak high pressure builds in.
459 AM EST Fri Dec 9 2016 The north country will be under cold advection today, as a cold front has moved south of the region this morning. Daytime temperatures today will be mainly in the 20s, with a chance of snow showers over the higher terrain.
As of 04Z (9 PM MST), temperatures across the region ranged from the lower 40s to the mid 50s for desert/valley locations.
1053 PM CST Thu Dec 8 2016 A weak surface trof noted on the latest analysis this evening over east central Iowa has been producing scattered flurries across the forecast area, especially over the north and east. We expect this activity to continue until the trof axis shifts off to our east by Friday morning. We did have some brief clearing from Springfield west to Jacksonville over the past few hours, but that is about to end as the lower clouds settle back to the south this evening. with the ridge axis eventually reaching the Mississippi River by Friday evening. central Illinois will continue to be influenced by cyclonic flow around a deep upper low over Quebec.
258 AM EST Fri Dec 9 2016 A cold dome of high pressure will continue to build over the area through the short term and bring some of the coldest temperatures felt so far this winter. Most locations will start out this morning with temperatures at or well below freezing. Decided to go a degree or two cooler than guidance.
Additional light showers are currently stretched from the nearshore waters surrounding the Lower Keys towards mainland Monroe county. The cold front in the vicinity of the Florida Keys this morning will dip south of the island chain and possibly the Straits of Florida today. As high pressure expands across the southeast, the low level steering flow turn to the northeast through the remainder of the weekend. Again, guidance suggests the low level moisture hangs tough, and will hang on to at least a chance of showers through the weekend. A slight chance of measurable precipitation will be advertised through the balance of the forecast as high pressure weakens in the Western North Atlantic and a weaker steering flow deepens from the east/southeast. The next cold front is expected to approach south Florida late next Thursday or early Friday.
Gusty winds and cooler temperatures will accompany this system.
426 AM EST Fri Dec 9 2016 The north country will be under cold advection today, as a cold front has moved south of the region this morning. Daytime temperatures today will be mainly in the 20s, with a chance of snow showers over the higher terrain.
Warmer air continues to advect into the region so snow levels look to remain above pass levels through Friday night.
Clouds will gradually thin today and the area should receive some sunshine later today as high pressure moves toward Missouri.
331 AM EST Fri Dec 9 2016 Scattered flurries and isld snow showers will continue through the morning hours courtesy of a vort max in the upper trough and a thick low level cloud layer.
Observational data indicate that the highest elevations in these locations have already seen as much as 5 inches of snow since this morning. Atmospheric moisture has begun to deepen across the higher elevations of NW CO but will be become more widespread and bring dewpoints up across all of eastern UT and western CO throughout the next 24 hours.
1056 PM CST Thu Dec 8 2016 Deep cyclonic flow persists across the region with low pressure in southeastern Canada and expansive high pressure in the Plains the controlling surface features. The resultant gusty west-northwest surface winds will diminish this evening and especially overnight as high pressure gradually shifts eastward from the Plains.
Early morning surface analysis had a >1040mb north-south oriented ridge axis over the plains.
320 AM CST Fri Dec 9 2016 Surface analysis early this morning places high pressure across the state.
1234 AM EST Fri Dec 9 2016 A cold front will move east of the Midlands this evening.
434 AM EST Fri Dec 9 2016 Cold high pressure will extend over the area through the first half of the weekend. A weak trough of low pressure is expected to develop off the Southeast U.
319 AM CST Fri Dec 9 2016 A large area of clouds that has kept temps a few degrees warmer overnight, may hamper temps from warming through much of the day.
Strong cold air advection is occurring across the area behind a departing cold front. The cold front is now well to the east along the Eastern Seaboard.
343 AM CST Fri Dec 9 2016 A freeze will be in store for areas north of Lake Pontchartrain while areas to the south will flirt with freezing.
At the surface, high pressure has retreated east of our CWA with southerly flow in place across our CWa. Stratus has developed within the region of southerly flow in western and central Kansas just west of retreating high pressure.
330 PM CST Sun Jan 15 2017 Warm frontal boundary has only been pushed slghtly to the north across extreme northern fringe of area as se winds 5 to 10 mph began over ne TX earlier today.
128 PM EST Sun Jan 15 2017 A stalled boundary in the southern portion of the area will become diffuse and move back north today, bringing a return to warmer temperatures. An upper ridge over the southeastern part of the country will favor above normal temperatures through midweek.
135 PM EST Sun Jan 15 2017 Dry weather and seasonal temperatures today before light precipitation chances return with a Monday warm front.
308 PM CST Sun Jan 15 2017 Short Term (Tonight - tomorrow night): Freezing rain is transitioning to rain as the freezing line is lifting north across the CWA. That freezing line currently extends from MCI to Moberly line. Areas north of that line will continue to see freezing rain into tonight however accumulations are expected to be limited mainly to untreated, elevated surfaces, and other objects. By sunrise tomorrow, the entire CWA will be above freezing and the upper level system that brought the weekend ice will move through the area. An associated cold front will move through the CWA tomorrow afternoon continuing shower chances and in fact a thunderstorm can not be ruled out.
1254 PM EST Sun Jan 15 2017 High pressure builds into the region today and tonight. The high will drift offshore Monday afternoon and Monday night.
Low ceilings and chances for drizzle/light rain showers will continue for most of the day, but conditions still look to improve later this afternoon for a bit as the upper level ridge starts to build in.
119 PM EST Sun Jan 15 2017 A frontal boundary will remain well south of the local area the into Monday as high pressure builds across New England. A series of weak low pressure systems will track along that boundary resulting in periods of unsettled weather through early in the upcoming week. but w/ the region E of the ridge axis (invof TN/OH valleys). Highs Mon in the low-mid 40s NNW to around 50 F far SE. lifting a warm front N of the local area. The sky cleared eastern portions this morning as high pressure over the Northeast States built southward.
Wed and Thu look dry and warmer thanks to increased ridging aloft. Late this week into this weekend is highly uncertain as models depict the upper ridge being attacked by multiple waves coming in from the W. Highs will be around 40F and lows should be near or just above freezing. As the high moves off to the east later today/tonight, increasing w to sw winds above sfc based inversion will result in marginal LLWS at KIWD/KSAW. Winds will then diminish to under 15kt Mon thru at least Mon evening as a high pres ridge moves over the area.
1214 PM EST Sun Jan 15 2017 High pressure builds into the region today and tonight. The high will drift offshore Monday afternoon and Monday night.
233 PM EST Sun Jan 15 2017 A stationary front just south of our area lifts north as a warm front this evening.
451 PM EST Sun Jan 15 2017 High pressure to the north will push a little cooler air into the forecast area Monday.
Mild weather will continue tonight with low-level easterly flow and an upper ridge in place.
240 PM EST Sun Jan 15 2017 A stalled boundary in the southern portion of the area will become diffuse and move back north today, bringing a return to warmer temperatures. An upper ridge over the southeastern part of the country will favor above normal temperatures through midweek.
111 PM EST Sun Jan 15 2017 A frontal boundary will remain well south of the local area the into Monday as high pressure builds across New England. A series of weak low pressure systems will track along that boundary resulting in periods of unsettled weather through early in the upcoming week. but w/ the region E of the ridge axis (invof TN/OH valleys). Highs Mon in the low-mid 40s NNW to around 50 F far SE. lifting a warm front N of the local area. The sky cleared this morning over the Lower eastern shore and far eastern Virginia. Most of the low clouds that were present this morning were gone except over Southside Hampton Roads which will clear shortly.
108 PM EST Sun Jan 15 2017 A stationary front just south of our area lifts north as a warm front this evening.
This region is tied to the principle axis of strong height falls spreading ENE ahead of a stout upper cyclone just south of Ciudad Juarez.
240 PM CST Sun Jan 15 2017 Water vapor imagery shows upper low currently churning over far sw TX with strong upper diffluence lifting over the southern high Plains. Cold front is still down over southern TX and has moved little over last 24 hours. Temps are expected to stay at or just below freezing tonight for areas generally north of a Hutch to Marion line and this is where we'll keep the warning in effect overnight. By Mon afternoon, the upper low will be lifting across northeast KS, with the better precip chances over eastern Nebraska and Iowa.
1242 PM EST Sun Jan 15 2017 High pressure will build across the area today.
109 PM EST Sun Jan 15 2017 High pressure builds into the region from Canada this afternoon and remains over the area through Monday. Surface observations and radar indicating that light snow earlier this morning has come to an end across the region at this time, as a ridge of high pressure builds east from the Great Lakes for the remainder of this afternoon and tonight. Visible satellite loop showing signs of low cloud cover staring to slowly diminish as the high builds east. Areal coverage of light snow hanging tough over the area this morning and have gone ahead and continued the higher probability snow through at least mid- morning before tapering off. High pressure builds into the region tonight and Monday. high temperatures should be several degrees warmer than Sunday with readings getting into the upper 20s to mid 30s.
Temperatures were not quite as cold last night allowing a warmer start to the day. So highs are expected to finally rise above freezing in the southwestern zones. Otherwise, there is not much weather going on with a ridge in place, and only high thin clouds drifting by. Still expect temperatures to rise above zero, and likely reach above freezing by the end of the period. An upper disturbance will move across the northern Rockies today and push a weak cold front through Montana tonight. High pressure slides across eastern Montana on Monday for little additional mixing.
/Issued 934 AM CST Sun Jan 15 2017/ AT long last, just about all locations have warmed above freezing and temperatures will continue a slow climb through the evening.
Persistence through Monday under short wave upper ridge.
Still expect temperatures to rise above zero tonight, and likely reach above freezing by the end of the period.
Under continued mostly sunny skies through much of day, Monday's high temps should rise well into the 30s over much of the west half of Upper Mi with cooler low 30s temps east, downwind of Lake Mi in a sw flow. Wed and Thu look dry and warmer thanks to increased ridging aloft. Late this week into this weekend is highly uncertain as models depict the upper ridge being attacked by multiple waves coming in from the W. Highs will be around 40F and lows should be near or just above freezing. As the high moves off to the east later today/tonight, increasing w to sw winds above sfc based inversion will result in marginal LLWS at KIWD/KSAW. Winds will then diminish to under 15kt Mon afternoon thru Tue as a high pres ridge moves over the area.
353 PM EST Sun Jan 15 2017 High pressure will build over the Tri-State Region tonight, and drift offshore on the Birthday of Martin Luther King, Jr.
351 PM EST Sun Jan 15 2017 High pressure will build into the area bringing clearing skies for Monday.
Warm front is lifting n and winds will turn se in its wake with improving CIGS/VSBY. The lower ceilings, and visibility, may set back in through 15/15Z, but will carry mainly MVFR ceilings, with temporary lower conditions. /issued 413 AM CST Sun Jan 15 2017/ Quite a bit going on this morning with strong storms along the Pecos River and freezing rain across the northern Permian Basin. First I'll take on the freezing rain. The saving grace this morning is that dewpoints and surface temperatures are much closer to freezing.
232 PM EST Sun Jan 15 2017 Transition to a wetter, but still much warmer than average, period does finally begin to evolve through the short-term forecast period. Flat upper ridge actually sharpens and builds back north into the southeastern U. tonight but the ridge axis shifts quickly east of the forecast area Monday putting the region under increasing southwesterly upper flow.
347 PM EST Sun Jan 15 2017 High pressure will extend into the Carolinas through Monday night.
211 PM CST Sun Jan 15 2017 Have an upper low swinging over the area today with a secondary trough staying back to the west. This next trough will dig southward to Mexico before moving across the area later in the week as a West Coast trough kicks it east. At 19z the upper low can be seen on satellite SE of ELP.
High pressure over the region with diurnal Cu field developing area-wide but will be tough to get any showers popping up with the subsidence aloft. Isolated showers will linger in the weak trof off the NE Fl atlc coast but will remain offshore in the weak flow. High pressure ridge over the region lifts NE slightly but overall pattern remains the same with steering flow turning a bit more to the south. High pressure drifts further NE and offshore into the WRN Atlc and expect southerly flow to increase and will lead to another partly sunny day with above normal temps in the 75-80 range inland and near 70 along the coast.
333 PM CST Sun Jan 15 2017 Freezing line continuing to lift northward through region this afternoon. So freezing rain slowly changing over to all rain from south to north. Have expired/cancelled Ice Storm Warning and replaced portions over northeast MO, west central IL with a Freezing Rain Advisory til 6 pm. During the day on Monday, surface dewpts to rise into the low 40s to low 50s, decent low level jet and MU capes between 100 and 500 J/kg, so slight chance of thunderstorms, mainly during the afternoon hours. Decent WAA ahead of system on Monday with highs in the low 40s to upper 50s, a good 10 to 15 degrees above normal for this time of year.
224 PM EST Sun Jan 15 2017 High pressure builds into the region from Canada this afternoon and remains over the area through Monday.
802 AM PST Sun Jan 15 2017 A weak low pressure trough in the upper atmosphere, coupled with a coastal eddy will result in more clouds today.
Nearly stationary frontal boundary that has been hanging around near our northern and western border will retreat back north during the short term period as a the upper ridge axis moves across the area.
401 PM EST Sun Jan 15 2017 High pressure overhead will shift to the Mid-Atlantic coast on Monday. Low pressure will track out of the southern Plains lifting a warm front north across the area on Monday night.
1143 AM EST Sun Jan 15 2017 High pressure will build back in across the region through tonight.
119 PM EST Sun Jan 15 2017 Aviation High pressure centered over the region will continue to control the weather through tonight.
High pressure will build over the area through tonight.