Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 139, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Aug 19, 2021, 5:59 PM MDT for 4 counties in Nebraska. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2021, 5:59 PM MDT (23:59 UTC)
- Expired
- Aug 19, 2021, 6:45 PM MDT
- In force
- 46 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Arthur County, NE, Keith County, NE, Lincoln County, NE, McPherson County, NE
The radar
The North Platte radar (KLNX), 88 km from the middle of the area, began a volume at 00:04 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 19, 1:14 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 19, 5:25 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 12.0 hours before the alert went out and 85 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
- 541 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 810 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
941
WUUS53 KLBF 192359
SVRLBF
NEC005-101-111-117-200045-
/O.NEW.KLBF.SV.W.0139.210819T2359Z-210820T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
659 PM CDT Thu Aug 19 2021
The National Weather Service in North Platte has issued a
* Severe Thunderstorm Warning for...
Eastern Arthur County in west central Nebraska...
Northeastern Keith County in southwestern Nebraska...
Northwestern Lincoln County in southwestern Nebraska...
Western McPherson County in west central Nebraska...
* Until 745 PM CDT/645 PM MDT/.
* At 659 PM CDT/559 PM MDT/, severe thunderstorms were located along
a line extending from Arthur to Keystone, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Arthur, Keystone, Kingsley Dam, Haythorn Lake, Lena, Flatts, Big
Lamunyon Flats, Nevens, Broganville, Calora, Big Bald Hill,
Bucktail Lake, Sand Beach Lake, Three Mile Lake, Diamond Bar Lake,
Bucktail and Schnick Lake.
This includes the following highways...
Highway 61 between mile markers 93 and 100, near mile marker 106,
and between mile markers 109 and 130.
Highway 92 between mile markers 165 and 190.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight CDT/1100 PM MDT/ for
southwestern and west central Nebraska.
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until midnight CDT/1100 PM MDT/ for
southwestern and west central Nebraska.
&&
LAT...LON 4174 10150 4174 10128 4119 10107 4116 10168
4162 10179
TIME...MOT...LOC 2359Z 266DEG 24KT 4159 10167 4122 10156
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Taylor2 follow-up statements
655
WWUS53 KLBF 200017
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
717 PM CDT Thu Aug 19 2021
NEC005-101-111-117-200045-
/O.CON.KLBF.SV.W.0139.000000T0000Z-210820T0045Z/
Arthur NE-Keith NE-Lincoln NE-McPherson NE-
717 PM CDT Thu Aug 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM
CDT/645 PM MDT/ FOR EASTERN ARTHUR...NORTHEASTERN KEITH...
NORTHWESTERN LINCOLN AND WESTERN MCPHERSON COUNTIES...
At 717 PM CDT/617 PM MDT/, severe thunderstorms were located along a
line extending from near Arthur to 9 miles north of Sarben, moving
east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Arthur, Keystone, Kingsley Dam, Haythorn Lake, Lena, Flatts, Big
Lamunyon Flats, Nevens, Broganville, Calora, Big Bald Hill, Bucktail
Lake, Sand Beach Lake, Three Mile Lake, Diamond Bar Lake, Bucktail
and Schnick Lake.
This includes the following highways...
Highway 61 between mile markers 93 and 100, near mile marker 106,
and between mile markers 109 and 130.
Highway 92 between mile markers 165 and 190.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until midnight CDT/1100 PM MDT/ for
southwestern and west central Nebraska.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4174 10150 4174 10128 4119 10107 4116 10168
4162 10179
TIME...MOT...LOC 0017Z 267DEG 20KT 4159 10160 4129 10134
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Taylor938
WWUS53 KLBF 200054
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
754 PM CDT Thu Aug 19 2021
NEC005-101-111-117-200103-
/O.EXP.KLBF.SV.W.0139.000000T0000Z-210820T0045Z/
Arthur NE-Keith NE-Lincoln NE-McPherson NE-
754 PM CDT Thu Aug 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ARTHUR...NORTHEASTERN
KEITH...NORTHWESTERN LINCOLN AND WESTERN MCPHERSON COUNTIES HAS
EXPIRED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Tornado Watch remains in effect until midnight CDT/1100 PM MDT/ for
southwestern and west central Nebraska.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
North Platte.
LAT...LON 4174 10150 4174 10128 4119 10107 4116 10168
4162 10179
TIME...MOT...LOC 0053Z 266DEG 24KT 4161 10130 4131 10104
$$
TaylorThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 3:00 PM MDT | Special Weather Statement | LBF | Deuel | 45 min |
| Aug 19, 3:13 PM MDT | Severe Thunderstorm Warning | LBF | Deuel, Garden | 47 min |
| Aug 19, 3:22 PM MDT | Special Weather Statement | LBF | Sheridan | 38 min |
| Aug 19, 4:01 PM MDT | Severe Thunderstorm Warning | LBF | Deuel, Garden | 44 min |
| Aug 19, 4:02 PM MDT | Areal Flood Advisory | LBF | Deuel | 3 hr |
| Aug 19, 4:35 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Garden, Keith | 40 min |
| Aug 19, 4:48 PM MDT | Areal Flood Advisory | LBF | Garden | 3 hr |
| Aug 19, 4:48 PM MDT | Severe Thunderstorm Warning | LBF | Deuel, Garden | 27 min |
| Aug 19, 4:50 PM MDT | Special Weather Statement | LBF | Garden | 40 min |
| Aug 19, 5:00 PM MDT | Special Weather Statement | LBF | Perkins | 45 min |
| Aug 19, 5:10 PM MDT | Tornado Warning | LBF | Chase, Perkins | 50 min |
| Aug 19, 5:17 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 43 min |
| Aug 19, 5:19 PM MDT | Severe Thunderstorm Warning | LBF | Arthur | 41 min |
| Aug 19, 5:23 PM MDT | Special Weather Statement | LBF | Grant | 52 min |
| Aug 19, 5:44 PM MDT | Areal Flood Advisory | LBF | Keith | 3 hr |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2021Every severe thunderstorm warning in 2021
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.