Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 101, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 23, 2021, 9:25 PM CDT for Brown County, Cherry County, Keya Paha County, Nebraska. It was in force for 50 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
- Jul 23, 2021, 9:25 PM CDT (02:25 UTC)
- Expired
- Jul 23, 2021, 10:15 PM CDT
- In force
- 50 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Brown County, NE, Cherry County, NE, Keya Paha County, NE
The radar
The North Platte radar (KLNX), 110 km from the middle of the area, began a volume at 02:27 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, 2.4 hours before the alert went out and 198 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
- 150 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 2750 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
The text
As transmitted.
883
WUUS53 KLBF 240225
SVRLBF
NEC017-031-103-240315-
/O.NEW.KLBF.SV.W.0101.210724T0225Z-210724T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
925 PM CDT Fri Jul 23 2021
The National Weather Service in North Platte has issued a
* Severe Thunderstorm Warning for...
Northeastern Cherry County in north central Nebraska...
Northwestern Brown County in north central Nebraska...
Western Keya Paha County in north central Nebraska...
* Until 1015 PM CDT.
* At 924 PM CDT, severe thunderstorms extended from 9 miles west of
Norden to 13 miles southeast of Valentine, 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...
Norden, Meadville, North River Trail, Sparks, Smith Falls State
Park and Bobcat State Wildlife Management Area.
This includes the following highways...
Highway 183 between mile markers 129 and 225.
Highway 12 between mile markers 16 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4273 9986 4274 10038 4295 10031 4300 10009
4300 9969
TIME...MOT...LOC 0224Z 256DEG 25KT 4289 10026 4276 10034
HAIL...1.00IN
WIND...60MPH
$$
Sporer2 follow-up statements
754
WWUS53 KLBF 240250
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
950 PM CDT Fri Jul 23 2021
NEC017-031-103-240315-
/O.CON.KLBF.SV.W.0101.000000T0000Z-210724T0315Z/
Cherry NE-Brown NE-Keya Paha NE-
950 PM CDT Fri Jul 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHEASTERN CHERRY...NORTHWESTERN BROWN AND WESTERN KEYA PAHA
COUNTIES...
At 949 PM CDT, severe thunderstorms extended from 9 miles south of
Keyapaha to near Norden to 12 miles north of Johnstown, and
were moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Norden, Meadville, North River Trail, Sparks, Smith Falls State Park
and Bobcat State Wildlife Management Area.
This includes the following highways...
Highway 183 between mile markers 129 and 225.
Highway 12 between mile markers 16 and 48.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4273 9986 4274 10038 4295 10031 4300 10009
4300 9969
TIME...MOT...LOC 0249Z 260DEG 22KT 4296 10012 4285 10012 4275 10006
HAIL...0.75IN
WIND...60MPH
$$
Sporer240
WWUS53 KLBF 240310
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
1010 PM CDT Fri Jul 23 2021
NEC017-031-103-240319-
/O.EXP.KLBF.SV.W.0101.000000T0000Z-210724T0315Z/
Cherry NE-Brown NE-Keya Paha NE-
1010 PM CDT Fri Jul 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHERRY...
NORTHWESTERN BROWN AND WESTERN KEYA PAHA COUNTIES WILL EXPIRE AT 1015
PM CDT...
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 will be allowed to expire. However small hail
and gusty winds are still possible with these thunderstorms.
LAT...LON 4273 9986 4274 10038 4295 10031 4300 10009
4300 9969
TIME...MOT...LOC 0309Z 256DEG 25KT 4299 9995 4288 9995 4278 9989
$$
SporerThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 7:54 PM CDT | Special Weather Statement | LBF | Deuel | 21 min |
| Jul 23, 8:16 PM CDT | Special Weather Statement | LBF | Deuel | 29 min |
| Jul 23, 8:41 PM CDT | Special Weather Statement | LBF | Cherry | 49 min |
| Jul 23, 9:19 PM CDT | Special Weather Statement | LBF | Keya Paha | 41 min |
| Jul 23, 10:16 PM CDT | Special Weather Statement | LBF | Keya Paha | 44 min |
| Jul 23, 11:06 PM CDT | Special Weather Statement | LBF | Keya Paha | 39 min |
| Jul 23, 11:48 PM CDT | Special Weather Statement | LBF | Boyd | 42 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.