Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 132, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Aug 15, 2021, 2:23 AM CDT for Brown County, Rock County, Nebraska. It was in force for 31 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 15, 2021, 2:23 AM CDT (07:23 UTC)
- Expired
- Aug 15, 2021, 2:54 AM CDT
- In force
- 31 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Tornado
- Possible
- Damage threat
- Considerable
- Hail
- 0.88 in
- Wind
- 70.0 mph
Counties Brown County, NE, Rock County, NE
The radar
The North Platte radar (KLNX), 89 km from the middle of the area, began a volume at 07:27 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, 7.4 hours before the alert went out and 153 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
- 1783 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1421 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 16.9
The text
As transmitted.
318
WUUS53 KLBF 150723
SVRLBF
NEC017-149-150815-
/O.NEW.KLBF.SV.W.0132.210815T0723Z-210815T0815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
223 AM CDT Sun Aug 15 2021
The National Weather Service in North Platte has issued a
* Severe Thunderstorm Warning for...
Southwestern Rock County in north central Nebraska...
East central Brown County in north central Nebraska...
* Until 315 AM CDT.
* At 222 AM CDT, a severe thunderstorm was located 7 miles north of
Rose, or 21 miles south of Bassett, moving northwest at 5 mph.
HAZARD...70 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Rose, Jones Lake and Duff.
This includes Highway 183 between mile markers 154 and 166.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter such as an interior room, a
bathroom, closet or basement.
&&
LAT...LON 4223 9945 4215 9954 4229 9987 4250 9964
TIME...MOT...LOC 0722Z 128DEG 6KT 4228 9955
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
CDC2 follow-up statements
249
WWUS53 KLBF 150744
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
244 AM CDT Sun Aug 15 2021
NEC017-149-150815-
/O.CON.KLBF.SV.W.0132.000000T0000Z-210815T0815Z/
Rock NE-Brown NE-
244 AM CDT Sun Aug 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT
FOR WEST CENTRAL ROCK AND EAST CENTRAL BROWN COUNTIES...
At 244 AM CDT, a severe thunderstorm was located 13 miles southeast
of Long Pine, or 15 miles south of Bassett, moving north at 15 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Jones Lake.
This includes Highway 183 between mile markers 164 and 167.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4232 9951 4220 9966 4229 9987 4250 9964
TIME...MOT...LOC 0744Z 158DEG 12KT 4236 9959
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
CDC481
WWUS53 KLBF 150754
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
254 AM CDT Sun Aug 15 2021
NEC017-149-150804-
/O.CAN.KLBF.SV.W.0132.000000T0000Z-210815T0815Z/
Rock NE-Brown NE-
254 AM CDT Sun Aug 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL ROCK AND EAST
CENTRAL BROWN COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
LAT...LON 4232 9951 4220 9966 4229 9987 4250 9964
TIME...MOT...LOC 0754Z 128DEG 6KT 4237 9961
$$
CDCThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 7:27 PM CDT | Special Weather Statement | LBF | Garden | 48 min |
| Aug 14, 7:59 PM CDT | Severe Thunderstorm Warning | LBF | Garden | 46 min |
| Aug 14, 8:34 PM CDT | Severe Thunderstorm Warning | LBF | Garden | 26 min |
| Aug 14, 8:57 PM CDT | Severe Thunderstorm Warning | LBF | Deuel, Garden | 48 min |
| Aug 15, 12:31 AM CDT | Special Weather Statement | LBF | Loup | 59 min |
| Aug 15, 1:27 AM CDT | Special Weather Statement | LBF | Rock | 63 min |
| Aug 15, 4:26 AM CDT | Special Weather Statement | LBF | Sherman | 64 min |
| Aug 15, 5:01 AM CDT | Areal Flood Advisory | LBF | Custer | 102 min |
| Aug 15, 5:29 AM CDT | Special Weather Statement | LBF | Holt | 46 min |
| Aug 15, 5:35 AM CDT | Special Weather Statement | LBF | Custer | 40 min |
| Aug 15, 6:35 AM CDT | Special Weather Statement | LBF | Garfield | 40 min |
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.