Alert archive / Nebraska / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 305, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Aug 13, 2020, 7:10 PM CDT for Brown County, Cherry County, Nebraska. It was in force for 38 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 13, 2020, 7:10 PM CDT (00:10 UTC)
- Expired
- Aug 13, 2020, 7:48 PM CDT
- In force
- 38 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Brown County, NE, Cherry County, NE
The radar
The North Platte radar (KLNX), 59 km from the middle of the area, began a volume at 00:12 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
Aberdeen, SD (KABR), launched 00:00Z, 0.2 hours before the alert went out and 318 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
- 4257 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1370 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.0
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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 13, 6:54 PM CDT, 16 minutes earlier.
Area forecast discussion, Aug 13, 6:54 PM CDT, 16 minutes before
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</html>Hazardous weather outlook, Aug 13, 3:15 PM CDT, 3 hours 55 minutes before
Hazardous Weather Outlook National Weather Service North Platte NE 315 PM CDT Thu Aug 13 2020 NEZ004>010-022>029-035>038-056>059-069>071-094-142015- 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- 315 PM CDT Thu Aug 13 2020 /215 PM MDT Thu Aug 13 2020/ This Hazardous Weather Outlook is for portions of western and north central Nebraska. .DAY ONE...TONIGHT. There is a slight risk for severe thunderstorms over southwest Nebraska. The greatest risk for severe thunderstorms will exist unti 10 pm CT with the threat for severe thunderstorms decreasing with the loss of heating. The greatest risk for severe thunderstorms will extend along and east of a line from Lamar, Arthur, Whitman and Cody. The primary hazards are damaging wind gusts and hail up to 1" in diameter. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. An isolated strong or briefly severe thunderstorm may form late Friday afternoon and evening. The area of concern is across north central Nebraska along and east of a line from Ansley to Page. The hazards are wind damage and large hail. Ordinary thunderstorms are possible at times Saturday through Wednesday. The risk of severe weather is low. .SPOTTER INFORMATION STATEMENT... Please relay any information about observed severe weather or impacts to the NWS. && Get your weather, hydrological, and climate information at http://www.weather.gov/northplatte
In the hours before
Special weather statement, Aug 13, 5:43 PM CDT, 1 hour 27 minutes before
Special Weather Statement National Weather Service North Platte NE 543 PM CDT Thu Aug 13 2020 NEZ006-008-009-132330- Brown NE-Rock NE-Keya Paha NE- 543 PM CDT Thu Aug 13 2020 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ROCK...NORTHEASTERN BROWN AND SOUTHERN KEYA PAHA COUNTIES UNTIL 630 PM CDT... At 543 PM CDT, Doppler radar was tracking a strong thunderstorm 9 miles southwest of Springview, moving east at 20 mph. Nickel size hail and wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Bassett, Springview, Keller Park State Recreation Area, Thomas Creek State Wildlife Management Area, Bobcat State Wildlife Management Area, Pine Glen State Wildlife Refuge, Antelope Peak and Meadville. This includes the following highways... Highway 183 between mile markers 180 and 182, and between mile markers 197 and 213. Highway 20 between mile markers 255 and 260. Highway 12 between mile markers 38 and 51. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4265 10006 4285 9999 4281 9946 4254 9952 TIME...MOT...LOC 2243Z 279DEG 15KT 4273 9988 Jurgensen
Local storm report, Aug 13, 5:49 PM CDT, 1 hour 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
549 PM CDT THU AUG 13 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0526 PM HAIL TRYON 41.56N 100.94W
08/13/2020 E1.00 INCH MCPHERSON NE LAW ENFORCEMENT
&&
CBROWNSpecial weather statement, Aug 13, 6:08 PM CDT, 1 hour 2 minutes before
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</html>Special weather statement, Aug 13, 6:42 PM CDT, 28 minutes before
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</html>Local storm report, Aug 13, 6:43 PM CDT, 27 minutes before
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</html>Special weather statement, Aug 13, 6:55 PM CDT, 15 minutes before
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</html>The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 7:25 PM CDT | Special Weather Statement | LBF | Lincoln | 50 min |
| Aug 13, 7:40 PM CDT | Special Weather Statement | LBF | Keith | 50 min |
| Aug 13, 7:48 PM CDT | Special Weather Statement | LBF | Brown | 42 min |
| Aug 13, 8:14 PM CDT | Special Weather Statement | LBF | Brown | 61 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2020Every severe thunderstorm warning in 2020
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.