Alert archive / Nebraska / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 389, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 25, 2019, 9:19 PM MDT for Dawes County, Nebraska. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 25, 2019, 9:19 PM MDT (03:19 UTC)
- Expired
- Aug 25, 2019, 10:15 PM MDT
- In force
- 56 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 70.0 mph
County Dawes County, NE
The radar
The Rapid City radar (KUDX), 158 km from the middle of the area, began a volume at 03:21 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.3 hours before the alert went out and 274 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 992 J/kg
- Mixed-layer CIN
- -266 J/kg
- Mixed-layer LCL
- 1024 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 25, 5:48 PM MDT, 3 hours 31 minutes earlier.
Area forecast discussion, Aug 25, 5:48 PM MDT, 3 hours 31 minutes before
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</html>Hazardous weather outlook, Aug 25, 1:52 PM MDT, 7 hours 27 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 152 PM MDT Sun Aug 25 2019 WYZ104-106>112-114-116>119-262000- Ferris/Seminoe/Shirley Mountains- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- North Snowy Range Foothills-Southwest Carbon County- Sierra Madre Range-Snowy Range-South Laramie Range- South Laramie Range Foothills-Central Laramie County- East Laramie County- 152 PM MDT Sun Aug 25 2019 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT Dangerous fire weather conditions are prevailing across fire weather zones 303, 304, 305, 307, 309, and 310. A Red Flag Warning is in effect through 9 PM. Please see the latest RFW product for more details. Overnight tonight a front will move through bringing a chance for showers and thunderstorms and allowing for good humidity recovery across the area. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Conditions will be dry and quiet through the week. .Spotter information statement... Spotter activation will not be needed. NEZ002-003-019>021-054-055-095-096-WYZ101>103-105-113-115-262000- Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- North Sioux-South Sioux-Converse County Lower Elevations- Niobrara County-North Laramie Range-Shirley Basin- Upper North Platte River Basin-Laramie Valley- 152 PM MDT Sun Aug 25 2019 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT A few showers and thunderstorms are possible tonight, but the severe threat is low. Quiet conditions prevail for today. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Conditions will be dry and quiet through the week. .Spotter information statement... Spotter activation will not be needed.
In the hours before
Special weather statement, Aug 25, 8:17 PM MDT, 1 hour 2 minutes before
Special Weather Statement National Weather Service Cheyenne WY 817 PM MDT Sun Aug 25 2019 WYZ102-260245- Niobrara County WY- 817 PM MDT Sun Aug 25 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN NIOBRARA COUNTY UNTIL 845 PM MDT... At 817 PM MDT, Doppler radar was tracking a strong thunderstorm near Dewey, or 21 miles northwest of Edgemont, moving southeast at 35 mph. Penny size hail and wind gusts of 50 to 55 mph will be possible with this storm. This storm will remain over mainly rural areas of northeastern Niobrara County. PRECAUTIONARY/PREPAREDNESS ACTIONS... To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service office in Cheyenne. && LAT...LON 4329 10405 4347 10436 4351 10433 4350 10406 TIME...MOT...LOC 0217Z 298DEG 29KT 4352 10414 Hammer
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 8:17 PM MDT | Special Weather Statement | CYS | Niobrara | 28 min |
| Aug 26, 2:15 AM MDT | Red Flag Warning | CYS | 13 hr | |
| Aug 26, 1:54 PM MDT | Fire Weather Watch | CYS | 13 hr |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2019Every severe thunderstorm warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.