Aikyam-Lab/Synoptic-Bench huggingface dataset:
These lingering showers have the potential to also produce very light freezing rain in locations that are below freezing. The next surge of moisture, mainly arriving with a warm front, will spread precipitation throughout north-central Idaho during this morning and western Montana starting around mid-morning and remaining into afternoon. Precipitation is expected to decrease from southwest to northeast Sunday evening with the high terrain of northwest Montana to keep chances through the night. Conditions that have the chance to create impacts include, ponding of water from snowmelt and rain, and refreezing of roadways Monday morning. A cold front passage remains in the forecast for Monday night which will provide the next opportunity for precipitation, likely starting in the form of rain below around 4500 feet.
547 AM CST Sun Jan 28 2018 Arctic high pressure will begin to settle into the region today, bringing much colder temperatures with highs in the upper teens to lower 20s.
540 AM CST Sun Jan 28 2018 This week will be characterized by a couple of colder days followed by a couple warmer days followed by colder temperatures with the chance of accumulating snow over the weekend. The veering winds behind the cold front this morning are picking up in the 10 to 20kt range with some higher gusts. Highs today should be around 20 near the South Dakota border to the lower 30s toward the KS/MO border.
The general trend over the next few hours will be LIFR to IFR conditions lifting to MVFR late in the afternoon as rain starts to taper off and a cold front exits the area.
1036 AM EST Sun Jan 28 2018 A cold front will spread rain across the area through Monday morning.
Meanwhile, an arctic cold front will advance southward from Kansas and Colorado. For KGUY, winds will be predominantly out of the north AFT 28/19Z at 15 to 25 kts as the arctic cold front passes thorough around midday. Cold front hangs up across the northern portions of the forecast area through the day Wednesday before finally surging south across the remainder of the Panhandles by Wednesday evening.
327 AM CST Wed Feb 28 2018 The closed upper level low over southern California will open as it approaches west Texas today. Onset of winds with the approaching trough is also delayed a few hours with the highest speeds expected around 0Z. As the upper trough approaches the front will push through with winds shifting to the north around 06Z.
1029 PM CST Tue Feb 27 2018 Main concern in the short term periods is the threat for stratus, some potentially dense fog, along with a chance for freezing drizzle in some locations tonight into tomorrow. By this evening, the lowest 1500-2000 feet look to be saturated, putting all three potentially into play, particularly stratus and fog. Stratus is expected to linger through much of the day Wednesday until the next wave helps to dry out the lower levels a bit. That next wave arrives Wednesday night and it continues to look like it will not bring much notable weather to our CWA, aside from continuing chances for freezing drizzle and flurries in northwest Iowa.
An upper level low coming out of Alaska will begin to move southward off the coast of Canada on Wednesday. As it does the westerly flow over the Pacific Northwest will begin to turn southwesterly and a weak warm front will encroach on the area during the day with increasing chance of precipitation. Will see more precipitation beyond Wednesday as the upper level low settles over the region with colder air for the later part of the week.
108 AM EST Wed Feb 28 2018 Warm front advances into the region by tonight with rain.
Winds will generally be from the south to southeast through the period with wind sheer also likely in the lowest 2000 feet. A warm front is now analyzed over southwest Arkansas with this boundary expected to move to the northeast through the night.
127 AM EST Wed Feb 28 2018 High pressure over the region will move off the coast Wednesday morning. A weak warm front moving north through the region Wednesday will provide a chance of light rain.
/issued 645 PM EST Tue Feb 27 2018/ High pressure will continue to shift offshore tonight as a warm front begins to push north over the CWFA. While all models agree that a warm front will move north across the CWA Wednesday/Wednesday night, the issue is where the front will stall. NAM pushes the warm front into TN/NC keeping the heaviest rainfall north of the CWA.
Broad southwest flow aloft will result in continued chances for showers and thunderstorms on Wednesday with increased southwesterly winds ahead of a cold front.
420 AM EST Wed Feb 28 2018 High pressure over the area will slide east and allow a complex storm system to approach the area from the Ohio valley.
1043 PM MST Tue Feb 27 2018 The closed low center over LA today will gradually work its way eastward through Arizona and into New Mexico over the next 24 hours leaving western Colorado and eastern Utah in a bit of a col. Anticipating precipitation will stay in the mountains for the most part, with forecast dewpoints not really getting out of the teens during the trough passage. The Highway 160 corridor across SW Colorado is the most likely valley area to receive precipitation overnight tonight through Wednesday morning, but the threat looks to be short-lived and over by the early afternoon.
500 AM EST Wed Feb 28 2018 High pressure along the mid Atlantic Seaboard will move away from the region this morning as a warm front moves into the area.
1252 AM EST Wed Feb 28 2018 High pressure will drift east tonight.
A cold front will move through western areas and DRT 00Z-03Z Thu and through the I-35 corridor roughly around 06Z Thu. There may be a lull time on shower activity this evening across much of the area before showers and storms begin to develop across west Texas and then move eastward to affect the Rio Grande and southern Edwards Plateau area as an upper level low pressure system moves across the CONUS southwest region. As the upper level low pushes to the northeast into the Southern Plains on Wednesday, it weakens and opens. At the surface, a Pacific cold front is forecast to move across the area Wednesday afternoon and evening with chances for rain increasing through that period.
It will remain mild otherwise with early morning lows in the 40s and highs later today in the low to mid 50s.
405 AM EST Wed Feb 28 2018 High pressure will drift east tonight.
Maintained a mention of areas of fog/drizzle/freezing drizzle across the eastern counties through Wednesday morning. Much cooler. Cold front is progged to clear the Oklahoma border by noon, with gradually increasing north winds in its wake.
With relatively light winds and high pressure nearby today and tonight it would seem fog will continue to be possible toinght mainly across the James Valley and southern North Dakota.
1017 PM MST Tue Feb 27 2018 Split upper level flow with southern stream closed low over central CA and northern stream trough moving east-southeast into the northern Rockies. The trough to the northwest amplifies over WY and CO by Wednesday morning then slides east into the northern and central Plains Wednesday afternoon. This system will drag a cold front across the CWA Wednesday morning, with gusty west to northwest post-frontal winds along and south of Interstate 80. It will be 5-10 degrees cooler Wednesday afternoon with highs in the 30s to around 40.
1131 PM EST Tue Feb 27 2018 High pressure will drift east tonight.
Should be more snow melt today adding to the low- level moisture. The early part of the period will feature dry conditions with high pressure in place over the central part of the county.
349 AM CST Wed Feb 28 2018 Southwesterly low level moisture fetch will continue across the PAH forecast area early today as a surface warm front strengthens over AR. Thus, the low will pass just to our north, across northern IL/IN, bringing a surface cold front toward our region. Isolated tstms are possible north of I-64 in close proximity to the low. Meanwhile, it appears that the low level moist fetch over us will switch direction to more westerly, which will tend to keep the best moisture convergence and cross-frontal flow along the temporarily stalled frontal boundary across AR/TN. Mild temps will continue in the short term ahead of the cold front.
1003 PM CST Tue Feb 27 2018 The evening sfc analysis depicts a warm front that has lifted N to just S of the Red River across N and extreme NE TX, into extreme Srn AR. Much of the more organized convection has shifted N of the region this evening N of the warm front, with the SHRA over McCurtain County OK expected to diminish by/shortly after 06Z. Overall, a quiet night is expected overnight, although the short term progs do hint at the potential for isolated -SHRA or -DZ redevelopment late across the warm sector, as the front continues its Nwd advance into the higher terrain of SE OK/adjacent Wrn AR. But this should diminish during the evening as the instability wanes, and a cold front enters the region from the NW late.
334 AM CST Wed Feb 28 2018 Temps will be on the rise once again as the warm front has made its way through the area.
349 AM CST Wed Feb 28 2018 Southwesterly low level moisture fetch will continue across the PAH forecast area early today as a surface warm front strengthens over AR. Thus, the low will pass just to our north, across northern IL/IN, bringing a surface cold front toward our region. Isolated tstms are possible north of I-64 in close proximity to the low. Meanwhile, it appears that the low level moist fetch over us will switch direction to more westerly, which will tend to keep the best moisture convergence and cross-frontal flow along the temporarily stalled frontal boundary across AR/TN.
226 AM EST Wed Feb 28 2018 Warm front advances into the region by tonight with rain.
947 PM MST Tue Feb 27 2018 Current surface analysis shows cold front well south and east of the area, with high pressure centered to the northeast of the region. Upper level analysis shows near zonal flow across the northern US, with low pressure located across southern CA.
Temperature-wise today, a tight gradient will exist from north- south across the cold frontal zone, with 40s across north-central Kansas, and 60s-70s across far southern/southeast KS.
Shower coverage is scattered, and each run of the high res models develops less moving into the morning hours. Rain chances increase going into the overnight with a thunderstorm mention as the low tracks through the state. With the low moving through the state in the overnight/predawn hours, the area is just in a general thunder risk as instability will be limited, even with the shear/lift close to the low center.
Also, lowered PoPs just a bit over the high county.
316 AM CST Wed Feb 28 2018 Mid-level moisture will continue to advect into the region ahead of a deep upper low positioned near the Baja Peninsula. At the surface, a warm front will lift north into central Missouri by the afternoon hours, which could force the development of thunderstorm activity into the mid afternoon and early evening. Afternoon highs will be moderated by existing cloud cover, with the exception being areas south of the Missouri River, coincident with the placement of the warm front. Expecting temps to rise into the lower to mid 50s this afternoon across northern Missouri, with values in the 60s across central Missouri.
102 AM EST Wed Feb 28 2018 High pressure will prevail through tonight.
300 AM CST Wed Feb 28 2018 A weak cold front extending northeast from low pressure over southwest Kansas into central Iowa will slowly drift south today.
While an upper ridge will build across the region during the day today, several weak ripples in the flow may generate enough lift for isolated showers across the western and northern portions of the forecast area. Otherwise, the low-level flow will become southerly during the day, allowing for warmer temperatures than on Tuesday.
1245 AM EST Wed Feb 28 2018 High pressure will move offshore tonight through the day on Wednesday. A cold front will then move southeast through the region tomorrow night.
/Issued 701 PM EST Thu Dec 21 2017/ Wedge of high pressure has built into the area with easterly winds and low ceilings across the CWA. The wedge begins to retreat Friday as cold front approaches the Mississippi River valley. However, models typically diminish the wedge a bit too fast so not expecting a vast improvement with the low clouds Friday evening.
500 PM CST Thu Dec 21 2017 The cold front moved across the fcst area a few hours ahead of the models fcsts. On Friday, an upper level low pressure system will zip across the region.
535 PM CST Thu Dec 21 2017 /00Z TAFS/ VFR conditions are currently in place at all of the terminals, however, changes are in store for later tonight as a cold front will pass through the region. The mild temperatures will come to an abrupt end, however, as a strong cold front moves across the area late tonight and into Friday morning. In addition, an upper level trough moving overhead will generate scattered showers across the area beginning overnight and continuing into Friday afternoon.
516 PM MST Thu Dec 21 2017 Through Tonight: At 2335Z KCBK (Colby) reported 700 ft AGL ceilings and a 5 mile visibility associated with freezing fog. Although freezing fog (vis >=5 miles) at Colby is not anticipated to persist for long or expand in coverage, it should be noted that with temperatures in the upper teens to lower 20s, a trace of ice accumulation cannot be entirely ruled out.
706 PM EST Thu Dec 21 2017 High pressure tracks off to the northeast tonight into Friday as a warm front lifts north through the area.
440 PM MST Thu Dec 21 2017 The closed low trekking across Utah and Colorado today will continue to bring convective snow showers to parts of western Colorado and eastern Utah this evening. Forecast models are shutting the snowfall off across eastern Utah around 6pm this evening, then tapering off across the higher terrain in western Colorado by midnight.
533 PM CST Thu Dec 21 2017 VFR conditions in place as a cold front is rapidly approaching KLBB. /issued 319 PM CST Thu Dec 21 2017/ Upper low crossing the Four-corners this evening on track to swing progressively east Friday, crossing the southern Texas Panhandle late in the day. Cold front passing first, this evening, has been running faster than scheduled. Still some uncertainty with precise upper low path and depth, so a bit of lingering uncertainty elsewhere though bulk of solutions remain dry elsewhere in our area.
621 PM CST Thu Dec 21 2017 Updated for 00Z aviation discussion 00Z TAF discussion: MVFR category ceilings will be moving north into the forecast area in association with a warm front this evening. Already, cloud cover ahead of northward moving warm front is poised to move back into southwest portions. In advance, warm advection will increase as the surface warm front moves through the area.
Light snow has developed across the northwest, and will continue south and east as a cold front drops south tonight. The cold front will move through the state between midnight and 6 am bringing a quick shot of light snow to the region. VFR conditions initially though will see a trend towards low VFR to MVFR later this evening through tonight from northwest to southeast as a cold front moves through the area.
Still some differences in coverage of accumulating snow with much of the guidance pointing to lesser amounts across the Lower Treasure Valley and southeast Oregon zones.
The upper low will push into southwestern CO this evening with the associated trough to push southeast across the area by around midnight. A lee sidetrough will form overnight which will create gusty west winds in the foothills and moderate the minimum temperatures there to remain in the teens, otherwise temperatures across the area will be in the single digits to even below zero in the high mountain valleys as they clear out. Upper level flow pattern will turn more NW with the passing of the trough. Mid level ascent will weaken with slight ridging ahead of the next upper level system.
959 PM EST Thu Dec 21 2017 An upper-level composite analysis this evening shows a persistent deep layer mean anticyclone centered over the Yucatan Channel, providing ridging at all levels across the Florida Keys and adjacent coastal waters. Currently, air temperatures in Keys island communities range from the upper 60s in island-interior locations to the lower 70s closer to water. On this date in Florida Keys weather history, in 1901, the low temperature in Key West was 50 degrees.
505 PM EST Thu Dec 21 2017 High pressure will build across the region through early Friday.
414 PM MST Thu Dec 21 2017 Upper trough stretches through the northern plains and over the Rockies, with the upper low over the Four Corners region. With high pressure over the Dakotas, winds are generally variable around 5 to 10 kts, and temperatures early this afternoon are still in the teens. Upper trough will weaken tonight as it shifts eastward, and a broader trough will begin pushing into the region with another cold front.
559 PM CST Thu Dec 21 2017 Early afternoon surface map showed an area of low pressure over southeast Kansas, with a warm front arcing northeast to near the I-72 corridor in central Illinois. Can't rule out a little freezing drizzle over the northwest corner of the CWA late, but road temperatures are in the upper 30s per IDOT, so little impact is expected. The low pressure will ride northeast along the boundary into central Illinois late tonight, dragging a cold front through Friday morning. Top-down method suggests a bit of a freezing rain potential as well, but the same caveat applies with the road temps.
616 PM EST Thu Dec 21 2017 High pressure will build across the region through early Friday.
Winds will decrease late in the afternoon as the next cold front approaches, which is forecast to pass the region around sunset.
/Issued 241 PM EST Thu Dec 21 2017/ Wedge of high pressure has built into the area with easterly winds and low ceilings across the CWA. The wedge begins to retreat Friday as cold front approaches the Mississippi River valley. However, models typically diminish the wedge a bit too fast so not expecting a vast improvement with the low clouds Friday evening.
Upper high will remain in place through the weekend providing dry weather with mild afternoon temperatures and cool overnight lows. Expect overnight lows to fall into the low 30's to upper 20's in valley locations. Precautions should be taken to protect pets and plants in the freezing conditions.
The cold front will move through the state between midnight and 6 am bringing a quick shot of light snow to the region. VFR conditions initially though will see a trend towards low VFR to MVFR later this evening through tonight from northwest to southeast as a cold front moves through the area.
333 PM PST Thu Dec 21 2017 A very cold and dry air mass will bring widespread freezing temperatures tonight. Conditions will trend a little warmer through Christmas with continued dry weather. Yesterday's trough has shifted over the four corners region now with an eastern Pacific ridge providing cold northerly flow aloft over California. Widespread freezing temperatures occurred over the San Joaquin Valley and Kern County Desert last night. Sub-freezing temperatures will be even more widespread tonight with some rural areas of the SJ Valley dropping into lower 20s.
537 PM CST Thu Dec 21 2017 Low clouds, with mainly MVFR ceilings, should continue to form in the wake of a cold front. /issued 322 PM CST Thu Dec 21 2017/ The cold front has made it into the I-40 corridor across western OK this afternoon, and is nearing the I-44 corridor now across southwestern OK. The mid to upper level low over the four corners region will slowly progress southeastward overnight. For now, it appears only a small corridor near I-44 across central OK may briefly experience freezing drizzle early in the morning. Large scale ascent will increase late Friday as the now positively tilted trough moves over OK.
433 PM CST Thu Dec 21 2017 UA analysis and WV imagery show a longwave trough over the southwestern US, with southwesterly flow acrs old Mexico into TX transitioning more zonal acrs the southeastern US. In the lower levels, southerly flow was bringing considerable moisture over the region. Despite the cloud cover, temperatures have warmed into the lower to middle 70s. Model guidance is still in decent agreement on a cold front moving through the area Friday night.
Cold Canadian high pressure builds into the forecast area on Friday but clouds will linger over the area as the low to mid portions of the atmosphere remains moist under the influence of the Hudson Bay low.
348 PM PST Thu Dec 21 2017 Gusty east winds should continue in the higher elevations of the Sierra into the evening and at Lake Tahoe. /Issued 135 PM PST Thu Dec 21 2017/ Ridge builds across the west resulting in light winds and inversions developing through the end of this week. Easterly ridge winds peaked midday with gusts between 75 to 100 mph for some Sierra observations sites. Generally, the remainder of the forecast through the end of this week is quiet as high pressure returns and along with it the light winds and inversions. Temperatures will slowly climb in the higher elevations with most areas reaching the mid 40s by the weekend. -Edan Gusty northeast-east ridge winds have slowly decreased through the day today. Winds will continue to subside tonight as high pressure builds.
The low so far today is the current (9 PM) temperature 65 degrees.
The column will be well below freezing with a fairly deep dendritic growth zone.
Warm front has lifted north to the I-64 corridor, with fairly extensive stratus spreading in behind it.
925 PM EST Thu Dec 21 2017 Evening surface analysis depicts a backdoor cold front extending from south central Georgia through the western Suwannee Valley and into north central Florida. deep-layered ridging was centered near the Yucatan channel, which was creating northwesterly flow above 850 millibars (5,000 feet) per the 00Z soundings at Jacksonville and Tallahassee. SREF guidance also suggests dense fog formation along the Interstate 75 corridor during the predawn hours, and the low sun angle on the morning after the Winter Solstice will not help to dissipate the low stratus ceilings and fog on Friday morning. High pressure will build over our region on Friday, and mostly sunny skies are expected during the afternoon hours with rising heights aloft. High pressure will continue to build over the coastal waters in the wake of the departing backdoor cold front.
732 PM PST Thu Dec 21 2017 A cold front dropping down from the north will bring generally light snow tonight through Friday night.
304 PM PST Thu Dec 21 2017 Cloudiness will increase over much of the forecast area Friday through the weekend as high pressure weakens along the west coast.
However, conditions are expected to deteriorate Tonight with low clouds developing behind a cold front that will move through the area Tonight. /Issued 338 PM CST Thu Dec 21 2017/ Near record warmth today ahead of a strong cold front which will pass through the area overnight.
911 PM EST Thu Dec 21 2017 High pressure will build across the region through early Friday.
Chattanooga Airport, TN 49 58 53 59 / 10 40 60 80 Knoxville McGhee Tyson Airport, TN 47 58 52 60 / 10 40 60 80 Oak Ridge, TN 46 58 52 58 / 10 60 60 80 Tri Cities Airport, TN 38 58 47 59 / 0 40 60 90.
903 PM EST Thu Dec 21 2017 The forecast for tonight looks on track with temperatures hovering in the low to mid 50s and increasing chances for rain showers after midnight. Warm front has lifted north to the I-64 corridor, with fairly extensive stratus spreading in behind it.
835 AM EDT Sun Jun 4 2017 Periodic showers and thunderstorms are expected for the first half of the week with the encroachment of a front and cold upper low pressure. Outflow and prefrontal troughing are likely to provide convective support across that same area into the afternoon as the disturbance progresses east-southeastward.