Aikyam-Lab/Synoptic-Bench huggingface dataset:
159 PM CDT Sun Jul 2 2017 An upper ridge centered over southern New Mexico/northern Chihuahua will retrograde slowly westward through Monday as an upper trough over the Great Basin translates eastward into the central U.
332 PM EDT Sun Jul 2 2017 General upper troughing eases east of the Upper Great Lakes through Mon. Quiet weather expected into Mon as high pressure expands from Hudson Bay to the Upper Great Lakes. Sct-bkn cu clouds expected on Mon with lake breezes, especially off Lk Superior, as the high builds overhead.
Strong heating and convergence into a lee-side trough will be the main support for thunderstorms. Weak upper troughiness to continue over the E CONUS, with upper ridge over the W.
337 PM MDT Sun Jul 2 2017 Current KCYS radar loop shows thunderstorms developing near the Pine Ridge from north of Lusk southeast towards Alliance Nebraska this afternoon.
137 PM EDT Sun Jul 2 2017 Upper air pattern consists of a 500 mb closed low northwest of Lake Superior this morning embedded in a trough across the Great Lakes region with troughing in the western U. Overall, did not make too many changes to the going forecast except went slightly warmer for this afternoon across the south with plenty of sunshine. Persistent upper troughing that that has been entrenched over the Great Lakes will shift a little further eastward with a slow increase in upper level heights across the area.
Closed upper level low over Nevada will slowly move eastward to NE Utah by noon Sunday. Because of the slow progression of this closed low, a band of showers picking up moisture from the Gulf of California will slowly trek eastward across western Colorado through tonight. with the closed low in Utah producing rain and snow showers over NE Utah by Sunday morning.
This feature will continue to round the base of the trough, leaving aforementioned counties beneath a subsidence wake.
608 PM CDT Sat Sep 23 2017 A deep trough over the intermountain west is keeping a strong ridge over the east. This will keep the temperatures a little cooler but still above normal for this time of year.
Lows will average in the lower to mid 70s interior and mid to upper 70s near the east coast. The high surf will also begin to bring some erosion to the beaches likely around the time of high tide at mid day. Low level winds will be northeast with scattered showers likely ongoing in the morning along the coast and then moving southwestward into the interior by afternoon with the highest coverage across the srn interior.
This slow-moving upper- level trough is expected to keep rain showers there and only gradually move them eastward through tomorrow. BMickelson Previous short term discussion: Upper level low pressure trough to our west will shift slightly eastward over eastern Montana over the next few days.
Hot temps will continue Sun-Mon but perhaps a couple degrees cooler from today. Highs Sunday should be a bit cooler, but still quite warm, with upper 80s to around 90 forecast.
so pulled the higher POPs about a county further north each hour.
/issued 302 PM CDT Sat Sep 23 2017/ Isold convection ongoing across the region this aftn, as daytime heating and sufficient moisture overpower the the influence of the upper ridge.
/issued 315 PM CDT Sat Sep 23 2017/ Another warm day across the Midsouth with a broad area of high pressure in control of the weather across the eastern half of the contiguous US. A weak upper level low centered over coastal AL and the FL panhandle will retrograde slightly west over the next couple of days.
Surface and upper level ridging resulting in fair skies and continued south winds with very warm air. Temperatures at 2 PM CDT are in the lower 90s with both Moline and Cedar Rapids already breaking high temperatures for today.
/issued 252 PM CDT Sat Sep 23 2017/ SHORT TERM (Now through Sunday night): Well-amplified ridge over the Midwest will slowly move eastward as a deep trough over the western half of the U. RH values of 60 to 80% in the low levels along with precipitable water measured from the 12Z sounding of near 2.
Some stratus will develop again overnight as moisture is lifted over the higher terrain of the Texas Hill Country. /Issued 352 PM CDT Sat Sep 23 2017/ /Through Tonight/ An inverted trough along the Gulf Coast may generate a few showers across the eastern counties this afternoon with precipitation dissipating after sunset. /Issued 352 PM CDT Sat Sep 23 2017/ /Sunday through Saturday/ We will remain in an area of upper level ridging between a large upper trough over the western United States and an upper level low over the northeastern Gulf of Mexico for the next 24 to 36 hours. Highs on Sunday will once again be in the lower to middle 90s.
526 PM MDT Sat Sep 23 2017 Current surface analysis shows cold front now well south and east of the region, with very cool air in place. Upper level analysis shows large scale trough over the western US, with fast south- southwest flow over the Rockies into the Northern Plains. Wet weather is to continue through the rest of the weekend, with well below average temperatures, as the upper trough only slowly move east-northeast.
High pressure aloft will produce a dry mild day Sunday.
1036 PM EDT Sat Sep 23 2017 Currently - High pressure over the eastern United States, along with Hurricane Maria, east of the northern Bahamas, has resulted in a light northeast flow across the Florida Keys.
Lee troughing over the High Plains will allow southerly flow to develop after 14Z.
00 UTC surface analysis shows an area of high pressure across Western PA and Hurricane Maria east of the Florida Peninsula. Low temperatures in the lower 70s are anticipated.
841 PM EDT Sat Sep 23 2017 High pressure will remain in place through the weekend and the first part of the week. High pressure in control of the synoptic pattern both at the surface and aloft.
/22/ Through Sunday Afternoon: The combination of slightly above average heat and humidity over the region and an upper low translating west over the Gulf States is starting to kick off isolated showers and storms over the forecast area in the past few hours. For Sunday, the upper level low currently moving toward the Lower MS Valley will be sitting right atop the region and continuing to ensure at least isolated showers and thunderstorms form during the afternoon hours. Temperatures will remain warm but will likely be a degree (maybe two) cooler in most areas than was the case this afternoon. /BB/ By Sunday night a weak mid/upper low will become centered over the ArkLaMiss between an deep trough over the western CONUS and steep ridging over the eastern portions of the country.
BTL Mid-level clouds on the east side are associated with the upper level trough that's now centered over southern Utah. Temperatures will be about 5 degrees warmer Sunday than they were today, making for another stellar early autumn day. Short period northwest swell will gradually subside tonight while a thermal trough maintains gusty north winds and steep seas south of Cape Blanco.
A dry atmosphere and subsidence within the massive ridge pattern leads to more great flying weather on Sunday.
1047 PM CDT Sat Sep 23 2017 Very little has changed with the overall position of the longwave trough over the West, with a downstream ridge firmly in place over the eastern states. In the lower levels of the atmosphere, a southwest to northeast surface boundary continues to stretch from central Nebraska through southwest Minnesota. In contrast, places like Huron, SD have been cloud-covered throughout the morning and sit under a shallow, much-cooler near surface air mass and northerly surface flow. high temperatures Sunday continue to show the stark differences in low level air masses, with upper 70s and 80s east of I-29, and much cooler 60s for Huron to Chamberlain.
1050 PM CDT Sat Sep 23 2017 A deep trough over the intermountain west is keeping a strong ridge over the east. This will keep the temperatures a little cooler but still above normal for this time of year.
634 PM CDT Sat Sep 23 2017 Very little has changed with the overall position of the longwave trough over the West, with a downstream ridge firmly in place over the eastern states. In the lower levels of the atmosphere, a southwest to northeast surface boundary continues to stretch from central Nebraska through southwest Minnesota. In contrast, places like Huron, SD have been cloud-covered throughout the morning and sit under a shallow, much-cooler near surface air mass and northerly surface flow. high temperatures Sunday continue to show the stark differences in low level air masses, with upper 70s and 80s east of I-29, and much cooler 60s for Huron to Chamberlain.
1202 AM EDT Sun Sep 24 2017 Strong upper ridging anchored over the region will maintain favorable aviation conditions through the period. Another day within the impressive +590 dam ridge and yet another day of approaching and exceeding record highs. From a top down perspective, there are a number of indicators that suggests the heart of the upper level ridge axis will now drift through the cwa during the next 6 hours. For minimum values tonight, started with a straight persistence forecast but did massage some sources in that were keeping lows in the lower to mid 60s based on cooler dewpoints. The closed off center of the upper level ridge will roll eastward into portions of PA and Upstate NY on Sunday.
An upper level low pressure system will slowly move through the central Rocky Mountains through Sunday, leaving southwest and central Montana in a cooler and drier part of the system. Widespread frost will also develop overnight as temperatures drop to below freezing in many areas.
19Z water vapor imagery shows the upper trough is still over the western U. Upper ridging extended from north TX through the mid MS river valley and into the Great Lakes. At the surface, high pressure was centered over the mid MS river valley and a pre-frontal trough stretched from southwestern KS into eastern NEB. A decent cold front was located from northwest KS through northeast NEB. For tonight and Sunday, models continue to show a slow progression to the upper trough and the associated dynamics so that by Sunday afternoon the pre-frontal trough is across north central KS. With a little more cloud cover anticipated for Sunday, highs are expected to be a degree or two cooler than today with readings forecast to be in the in the mid to upper 80s.
Water vapor imagery shows the closed upper low spinning across eastern Nevada with good upper level divergence spreading over the CWA. Wet bulb zero heights and snow levels will remain around 10500 ft through the early evening, so any accumulating snows should be confined to the higher peaks of the Snowy Range through tonight. Upper low will move into central Utah by Sunday morning, with colder air aloft moving into areas west of the Laramie Range.
832 PM EDT Sat Sep 23 2017 High pressure is ridging down the state with Maria moving north well to the east of the state. Temperatures will remain in the upper 80s to lower 90s for highs and lows generally in the lower to mid 70s.
628 PM MDT Sat Sep 23 2017 Closed upper level low over Nevada will slowly move eastward to NE Utah by noon Sunday. Because of the slow progression of this closed low, a band of showers picking up moisture from the Gulf of California will slowly trek eastward across western Colorado through tonight. with the closed low in Utah producing rain and snow showers over NE Utah by Sunday morning.
Overnight lows are likely to be at least a couple degrees cooler than the past few, with readings mainly in the mid 60s, as the local air mass is a little drier and we have an excellent radiational cooling scenario. However, these slightly cooler readings are still well above normal for late September. The weather map this afternoon, high pressure dominates the eastern half of the country. A deep upper level trof is keeping south/southwesterly flow up the leeside of the Rockies and in the High Plains. more likely to be light and variable in the east with a lack of a pressure gradient closer to the ridge. another hot one, mostly sunny with max temps into the low 90s. Tomorrows highs in the low 90s will be very close to the apparent temp.
Mostly clear skies will be seen tonight, with upper high pressure the main weather feature into the region.
High pressure was centered over the Ohio Valley early this afternoon, with a strong mid level ridge extending from the Great Lakes to Texas. An upper low was over the eastern Gulf Coast, FL Panhandle region. With respect to the upper low to our south.
/22/ Prior discussion below: Through Sunday Afternoon: The combination of slightly above average heat and humidity over the region and an upper low translating west over the Gulf States is starting to kick off isolated showers and storms over the forecast area in the past few hours. For Sunday, the upper level low currently moving toward the Lower MS Valley will be sitting right atop the region and continuing to ensure at least isolated showers and thunderstorms form during the afternoon hours. Temperatures will remain warm but will likely be a degree (maybe two) cooler in most areas than was the case this afternoon. /BB/ By Sunday night a weak mid/upper low will become centered over the ArkLaMiss between an deep trough over the western CONUS and steep ridging over the eastern portions of the country.
916 PM EDT Sat Sep 23 2017 High pressure will build South across the region Overnight, with Hurricane Maria well to the Southeast.
An upper low over Nevada will slowly track across Utah late tonight through Sunday, keeping cool and in some areas wet weather in place. Another upper low will likely impact Utah midweek. An upper low is noted in satellite imagery rotating into far southwest Utah this evening. Ahead of the upper low, convection has increased along this baroclinic zone over the past hour or two from Emery County northward into the Uinta Basin. As the upper low lifts north-northeastward through central and eventually northern Utah overnight through the day Sunday, anticipate widespread valley rain and mountain snow to continue across this area, with a gradual decreasing trend from south to north as the event progresses.
A high amplitude/static upper level pattern over us now with a deep trough over the western CONUS and ridge over much of the east will gradually change with time as a short wave and associated sfc front move through the upper Midwest Tue/Wed. An upper level low will drift westward and undercut a ridge over the area, mainly over the deep south and lower Mississippi valley region through Sunday.
Jaszka An upper level low pressure system will slowly move through the central Rocky Mountains through Sunday, leaving southwest and central Montana in a cooler and drier part of the system. Widespread frost will also develop overnight as temperatures drop to below freezing in many areas.
/Issued 352 PM CDT Sat Sep 23 2017/ /Through Tonight/ An inverted trough along the Gulf Coast may generate a few showers across the eastern counties this afternoon with precipitation dissipating after sunset. /Issued 352 PM CDT Sat Sep 23 2017/ /Sunday through Saturday/ We will remain in an area of upper level ridging between a large upper trough over the western United States and an upper level low over the northeastern Gulf of Mexico for the next 24 to 36 hours. Highs on Sunday will once again be in the lower to middle 90s.
520 AM EDT Mon Aug 28 2017 Update A slow moving low pressure system will track through Lower Michigan over the next couple of days. The clouds over the next couple of days will likely hold back the high temperatures a few degrees.
High pressure will begin to shift east allowing for additional moisture to return through the week. Additional moisture and instability move into the area Tuesday as the high axis shifts further east.
328 AM MDT Mon Aug 28 2017 An upper level ridge will remain centered over the Great Basin today and tonight, with limited moisture being over southern CO. However, there will still be enough moisture over the area that with the daytime heating, there should be at least isolated showers/tstms over and near the higher terrain this afternoon and evening. Temps today will be a little cooler, but will be close to average. Overnight temps should be around to a little above average, with lows mostly in the mid to upper 50s over the southeast plains, and in the mid 40s to around 50 in the high valleys.
With that, temperatures will be a touch warmer today over south central SD and The western James River Valley, topping out in the mid 80s. For tonight, our area remains under the influence of high pressure.
313 AM CDT Mon Aug 28 2017 Surface ridging will continue to build in from the north today while an upper trough maintains its hold over the Great Lakes.
436 AM MDT Mon Aug 28 2017 Upper-level ridging will continue to build through mid-week across the central Rockies. A few afternoon thunderstorms are possible on Tue & Wed as the models do show some weak midlevel energy traversing the flow along the edge of the ridge and easterly surface winds likely helping keep low-level moisture in place with dew points in the 45 to 55 degree range over the high plains.
Upper low dropping into the Ohio Valley today will provide the lift for scattered showers and a few storms across portions of southeast Ohio and perhaps clipping northeast Kentucky. The upper level low will meander across the Ohio Valley tonight, making little progress eastward. Still looking like a cool/showery day across the mountains as a low pressure system moves northeast along the coast.
325 AM CDT Mon Aug 28 2017 Upper low over northern Wisconsin this morning, while the upper ridge remains firmly in place over the western US and Harvey continues over the Texas coast. Upper low over northern Wisconsin this morning will be the main weather-maker for our area through the short term. As the low drops south into Illinois today, convection is expected to regenerate across much of the area. For Tuesday, an upper level low will exit to the east with a few showers and afternoon thunderstorms lingering across far northwest Illinois.
411 AM MDT Mon Aug 28 2017 High pressure will persist over the area the next few days.
1151 PM MDT Sun Aug 27 2017 As expected, enough moisture and lift occurred under the high pressure to bring some weak convection this afternoon. Almost no change for tomorrow as the center of high pressure will remain over central Utah. High pressure remains in control with convection kicking off each afternoon and evening.
327 AM MDT Mon Aug 28 2017 Strong upper ridging continues across the western CONUS this morning with northwest flow aloft across the Dakotas. high pressure is centered across East River and moving eastward toward the MS valley. Highs will be a few degrees warmer today.
144 AM EDT Mon Aug 28 2017 Low pressure is expected to drop slowly southeast from the upper Midwest tonight and Monday, then east across our area Tuesday.
130 AM EDT Mon Aug 28 2017 A ridge of high pressure will remain over Pennsylvania into Monday. Weakening low pressure in the upper atmosphere over the Midwest will lift through the region by the middle of the week, followed by a strong cold front crossing the area late in the week. High pressure retreats ENE of the region on Monday, allowing return flow of moisture to approach from the south and west. Highs on Monday afternoon will range from the low to mid 70s in most areas. Large high pressure over New England, along with a complex upper level low to the west, and a developing low across the southeast states will result in a cool northeast to southeast flow of air across the region Monday into Wed.
Upstream, a deepening upper trough will slowly push through the western Great Lakes. Mid level cyclone continues to slowly churn eastward from the western Great Lakes. Highlights: - Confidence increasing for below normal month at Pittsburgh - Mid level troughiness much of the period - Early fall like feel Upper level low pressure over the Great Lakes highlights the mid and latter part of the work week. With strong ridging in the western CONUS and southwestern Atlantic, the trough has a tough time being displaced.
A large area of high pressure will reside across much of the western U.
204 AM EDT Mon Aug 28 2017 High pressure over the northeast will weaken and move further east to allow a weak low to move from near Chicago early Monday into southern Ohio by Tuesday night before dissipating.
327 AM PDT Mon Aug 28 2017 High pressure aloft over the Great Basin will bring excessive heat for much of the week.
Less shower coverage expected through tonight due to loss of whatever daytime heating we get, but we will still have some weak energy wrapping into the region on the front flank of the closed low. Fog is also possible tonight, as there is some hinting of drying aloft which could help cool the higher sfc dew points coming in today. Highs will likely not be any higher than the lower 70s due to clouds. The upper level low will linger across or just to the south of the area while weakening.
1131 PM MDT Sun Aug 27 2017 The strong upper level ridge is expected to persist over the region during the next couple of days.
Breezy north winds across the eastern CWA this afternoon will diminish after sunset as high pressure moves over the region. Looking at mostly clear skies and light winds overnight, so undercut SuperBlend a bit and sided more towards cooler MOS guidance. With high pressure remaining in place on Monday, look for quiet conditions with mostly sunny skies and light winds.
651 AM EDT Mon Aug 28 2017 An upper level low will approach and slowly move across the region today into Tuesday bringing multiple rounds of showers and storms.
312 AM EDT Mon Aug 28 2017 An upper low will bring chances for showers and isolated thunderstorms today into Tuesday, best chances this morning and again Tuesday afternoon. Temperatures will remain cool for this time of year, with highs in the low to mid 70s each day. An upper low over WI will drop south toward the IL/WI border today, then drifting into ne IL/far nw IN by later tonight. Scattered showers/isolated storms will likely fire across northern IL later this afternoon under the upper low. Chances for scattered rain showers will continue into Tuesday as the upper low spins east through the local area.
308 AM CDT Mon Aug 28 2017 A cold front is currently moving south across south central Missouri. An upper level trough is currently diving should and will move across the region today. A few showers and maybe a rumble of thunder or two will be possible with the trough passage. Highs will warm into the upper 70s to lower 80s this afternoon as lows fall into the upper 50s to the lower 60s tonight. An upper level ridge will remain parked across the western U. As a result the below normal temperatures will occur as highs generally warm into the upper 70s to the lower 80s each day. Some areas also got some recent showers to add to the low level moisture.
/EC/ Today through tonight: Tropical Storm Harvey is forecast by the National Hurricane Center to drift southeast into the Texas coastal waters in the near term before lifting slowly north due to influences from the strong trough digging southward through the Midwest. Going into tonight, expect a drop-off in rainfall potential over the ArkLaMiss similar to experienced last night as significant convective rainfall tends to focus a little more closely to the cyclone center. However, lift for light to moderate rainfall may increase some, especially along/south of the Highway 84 corridor as we go through tonight.
545 AM EDT Mon Aug 28 2017 A ridge of high pressure will remain over Pennsylvania through tonight. A weakening upper low over the Midwest will lift through the region by the middle of the week, as a potential tropical storm along the Carolina coast tracks out to sea well south of Pennsylvania.
314 AM CDT Mon Aug 28 2017 Strong upper level ridging across The Wrn U. A strong upper level ridge will remain over the western US keeping high pressure situated over the central US.