An isolated thunderstorm crossed Sheridan County the evening of July 27, producing damaging winds.
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The episode as NWS LBF wrote it up.
An isolated thunderstorm crossed Sheridan County the evening of July 27, producing damaging winds.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS North Platte, NE wrote its last area forecast discussion before the first event at Jul 27, 4:40 PM MST, 1 hour 50 minutes earlier.
Area Forecast Discussion National Weather Service North Platte NE 640 PM CDT Sat Jul 27 2019 .SYNOPSIS... Issued at 318 PM CDT Sat Jul 27 2019 H5 analysis from earlier this morning had high pressure located over southern Arizona. Ridging had flattened over the western CONUS over the past 24 hours as a trough of low pressure approaches the Pacific northwest. East of the main trough, a secondary trough of low pressure extended from eastern Idaho into northern Utah. East of this feature, a weak upper level disturbance was lifting across sern Wyoming and nern Colorado, and had led to a shroud of mid and high level cloudiness across western and north central Nebraska. Light rain showers and even an isolated thunderstorm or two had developed and was present across western and north central Nebraska midday. With partly to mostly cloudy skies present across the forecast area, 2 PM CDT temperatures ranged from 81 at Ainsworth to 90 at Imperial. && .SHORT TERM...(This evening through Sunday night) Issued at 318 PM CDT Sat Jul 27 2019 The main forecast concern in the near term is precipitation chances and severe potential tonight. Right out of the gate, there are some significant timing differences between the HRRR and NAM12/NAM NEST solns this morning. The HRRR is 3 to 6 hours faster with the onset of convection over the panhandle. The HRRR develops storms in the western panhandle around 21z with the NAM NEST around 23z and the NAM12 around 2-3z. ATTM, believe the NAM12 is way too slow with the onset of precipitation in the forecast area and have opted for the faster HRRR/NAM NEST solns. That being said, went ahead and slowed down the onset of precipitation in the grids this evening as the inherited forecast had pops mentioned across all of north central Nebraska by early evening. As for the threat of severe storms, it appears fairly limited given the forecast 20 to 30 KTS of deep layer shear. Low level winds remain very weak PER the 12z LBF sounding, so most of the shear is of the mid level variety. This would favor potential for strong wind gusts and marginally severe hail with the hail threat being early on. The wind threat should carry over into the overnight as convection takes on a more linear mode. As for precipitation chances, they will be highest over the northern forecast area as the short range solutions focus the nose of the low level jet across the central and northern sandhills overnight. Overnight, a cold front will pass through the western half of the forecast area with this feature clearing the remainder of the forecast area Sunday afternoon. The threat for thunderstorms will linger in the east at least through midday Sunday before exiting to the east along with the front. Drier and cooler temps are expected behind the front with highs Sunday in the middle 80s. .LONG TERM...(Monday through Saturday) Issued at 318 PM CDT Sat Jul 27 2019 High pressure aloft will build east into the southern Rockies, then southern high plains early in the work week. The next shot of precipitation is expected Monday night into Tuesday as a warm front lifts east across the forecast area. Behind the warm front, warmer temperatures will set in with readings returning to the 90s in the west. However, some decent model differences are noted between the GFS and ECMWF solns this afternoon. Most notably, the degree of cooler air which tries to back into the eastern forecast area next week. The GFS is much stronger with this cooler air and the latest MEX guidance latches on to this. The ECMWF is warmer and is the preferred solution attm. In fact, the EC soln builds the high into the TX panhandle by Thursday with a significant amount of heat building into the high plains Thursday into Friday. The GFS soln has the high farther southwest, with a cooler soln for western Nebraska. In light of the model differences, a blended forecast yields widespread 80s with temps approaching 90 in the west next week. Will stick with this soln for now, but wouldn't be surprised if forecast temps trend warmer as we approach the middle of next week. && .AVIATION...(For the 00Z TAFS through 00Z Sunday evening) Issued at 640 PM CDT Sat Jul 27 2019 The primary aviation weather concerns for western Nebraska are thunderstorms, wind shear, and low ceilings. Scattered thunderstorms will overspread the Sandhills tonight, affecting the northern terminals the most (KGRN, KVTN, KANW, KONL). Gusty erratic winds, rapid drops in cigs/visby from heavy rain, and hail are possible. TSRA overage will be more isolated farther south (KOGA, KLBF), but the low level jet will result in wind shear conditions. As the storms are moving east overnight, surface winds will switch to southwest and eventually northwesterly. MVFR cigs are possible for northern Neb toward dawn Sunday. Low clouds give way to mid/high clouds Sunday morning, but northwest surface winds will be rather gusty in the afternoon. && .LBF WATCHES/WARNINGS/ADVISORIES... None. && SYNOPSIS...Buttler SHORT TERM...Buttler LONG TERM...Buttler AVIATION...Snively
Hazardous Weather Outlook National Weather Service North Platte NE 236 PM CDT Sat Jul 27 2019 NEZ004>010-022>029-035>038-056>059-069>071-094-281945- Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden- Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson- Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier- Western Cherry- 236 PM CDT Sat Jul 27 2019 /136 PM MDT Sat Jul 27 2019/ This Hazardous Weather Outlook is for portions of western and north central Nebraska. .DAY ONE...TONIGHT. Strong thunderstorms will be possible later this afternoon through the early morning Sunday for portions of southwest through much of north central Nebraska. Any strong storm will be capable strong wind gusts, frequent lightning, and locally heavy rainfall. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. Thunderstorms will be possible for areas east of Highway 83 on Sunday. The threat for severe weather is low. Additional thunderstorm chances will exist Monday through the middle of next week. The threat for severe weather is uncertain. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated this afternoon or tonight. && Get your weather, hydrological, and climate information at http://www.weather.gov/northplatte
Special Weather Statement National Weather Service North Platte NE 702 PM MDT Sat Jul 27 2019 NEZ004-280130- Sheridan NE- 702 PM MDT Sat Jul 27 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL SHERIDAN COUNTY UNTIL 730 PM MDT... At 702 PM MDT, Doppler radar was tracking a strong thunderstorm 7 miles north of Rushville, moving northeast at 25 mph. Pea size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Clinton and Mount Maria. This includes Highway 20 between mile markers 93 and 102. LAT...LON 4300 10210 4269 10235 4278 10257 4300 10245 TIME...MOT...LOC 0102Z 207DEG 21KT 4281 10242 Snively
Special Weather Statement National Weather Service North Platte NE 727 PM MDT Sat Jul 27 2019 NEZ004-280145- Sheridan NE- 727 PM MDT Sat Jul 27 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL SHERIDAN COUNTY UNTIL 745 PM MDT... At 726 PM MDT, Doppler radar was tracking a strong thunderstorm 9 miles southeast of White Clay, or 10 miles southeast of Pine Ridge, moving northeast at 25 mph. Half inch hail and wind gusts up to 50 mph will be possible with this storm. This storm will remain over mainly rural areas of north central Sheridan County. LAT...LON 4300 10211 4281 10227 4291 10254 4300 10250 TIME...MOT...LOC 0126Z 207DEG 21KT 4294 10239 Snively
Special Weather Statement
National Weather Service North Platte NE
729 PM MDT Sat Jul 27 2019
NEZ004-022-280215-
Sheridan NE-Garden NE-
729 PM MDT Sat Jul 27 2019
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GARDEN AND
SOUTHWESTERN SHERIDAN COUNTIES UNTIL 815 PM MDT...
At 728 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Wild Horse Butte to 8 miles northeast of
Angora. Movement was east at 25 mph.
Half inch hail and wind gusts up to 50 mph will be possible with
these storms.
Locations impacted include...
Antioch, Miles Lake, Wickson Lake, Diamond Lake, Krause Lake, Smith
Lake State Wildlife Management Area and Tralnor Lake.
This includes the following highways...
Highway 250 between mile markers 16 and 29.
Highway 2 between mile markers 96 and 106.
LAT...LON 4245 10236 4187 10257 4187 10268 4200 10268
4201 10270 4209 10270 4210 10274 4243 10275
4244 10277
TIME...MOT...LOC 0128Z 258DEG 20KT 4230 10280 4194 10296
SnivelyThe Rapid City radar (KUDX), 157 km away, was scanning. The volume nearest the first event began at 01:28 UTC.
1 thunderstorm wind. Local standard time, as filed.
Emergency manager reported a garage heavily damaged, power lines downed, and tree branches broken near Gordon.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nebraska in 2019Every state in 2019This day in weather historyWarnings in Nebraska, July 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 841802.