Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 106, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Aug 5, 2021, 4:23 PM CDT for Brown County, Cherry County, Keya Paha County, Nebraska. It was in force for 52 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 5, 2021, 4:23 PM CDT (21:23 UTC)
- Expired
- Aug 5, 2021, 5:15 PM CDT
- In force
- 52 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), 107 km from the middle of the area, began a volume at 21:25 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 5, 4:25 PM CDT | HAIL 1 | 5 S Sparks, NE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.4 hours before the alert went out and 192 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
- 630 J/kg
- Mixed-layer CIN
- -219 J/kg
- Mixed-layer LCL
- 1661 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
776
WUUS53 KLBF 052123
SVRLBF
NEC017-031-103-052215-
/O.NEW.KLBF.SV.W.0106.210805T2123Z-210805T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
423 PM CDT Thu Aug 5 2021
The National Weather Service in North Platte has issued a
* Severe Thunderstorm Warning for...
Northeastern Cherry County in north central Nebraska...
Northern Brown County in north central Nebraska...
Western Keya Paha County in north central Nebraska...
* Until 515 PM CDT.
* At 422 PM CDT, severe thunderstorms were located along a line
extending from near Norden to 13 miles southeast of Littleburg,
moving southeast 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...
Johnstown, Norden, Keller Park State Recreation Area, Smith Falls
State Park, Bobcat State Wildlife Management Area, Pine Glen State
Wildlife Refuge, Antelope Peak, Meadville, North River Trail,
Sparks and Thomas Creek State Wildlife Management Area.
This includes the following highways...
Highway 183 between mile markers 198 and 212.
Highway 20 between mile markers 224 and 238.
Highway 12 between mile markers 13 and 50.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4274 9966 4273 9968 4262 9968 4251 10012
4293 10041 4300 10011 4300 9999
TIME...MOT...LOC 2122Z 324DEG 22KT 4295 10007 4290 10027
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Sporer2 follow-up statements
621
WWUS53 KLBF 052153
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
453 PM CDT Thu Aug 5 2021
NEC031-052202-
/O.CAN.KLBF.SV.W.0106.000000T0000Z-210805T2215Z/
Cherry NE-
453 PM CDT Thu Aug 5 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHERRY COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4274 9966 4273 9968 4262 9968 4251 10012
4261 10019 4278 10018 4278 10020 4279 10019
4287 9983
TIME...MOT...LOC 2152Z 324DEG 22KT 4281 9993 4276 10013
$$
NEC017-103-052215-
/O.CON.KLBF.SV.W.0106.000000T0000Z-210805T2215Z/
Brown NE-Keya Paha NE-
453 PM CDT Thu Aug 5 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHERN BROWN AND SOUTHWESTERN KEYA PAHA COUNTIES...
At 452 PM CDT, severe thunderstorms were located along a line
extending from 9 miles west of Springview to 7 miles south of Norden,
moving southeast at 25 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Johnstown, Keller Park State Recreation Area, Bobcat State Wildlife
Management Area, Pine Glen State Wildlife Refuge, Antelope Peak,
Meadville and North River Trail.
This includes the following highways...
Highway 183 between mile markers 198 and 212.
Highway 20 between mile markers 224 and 238.
Highway 12 between mile markers 38 and 50.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4274 9966 4273 9968 4262 9968 4251 10012
4261 10019 4278 10018 4278 10020 4279 10019
4287 9983
TIME...MOT...LOC 2152Z 324DEG 22KT 4281 9993 4276 10013
HAIL THREAT...${observedHail}
MAX HAIL SIZE...1.25 IN
WIND THREAT...${observedWind}
MAX WIND GUST...60 MPH
$$
Sporer213
WWUS53 KLBF 052214
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
514 PM CDT Thu Aug 5 2021
NEC017-103-052224-
/O.EXP.KLBF.SV.W.0106.000000T0000Z-210805T2215Z/
Brown NE-Keya Paha NE-
514 PM CDT Thu Aug 5 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BROWN AND
SOUTHWESTERN KEYA PAHA COUNTIES WILL EXPIRE AT 515 PM CDT...
The storms which prompted the warning remain severe and a new
warning has been issued.
LAT...LON 4274 9966 4273 9968 4262 9968 4251 10012
4261 10019 4278 10018 4278 10020 4279 10019
4287 9983
TIME...MOT...LOC 2214Z 324DEG 22KT 4271 9983 4266 10003
$$
SporerThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:11 PM CDT | Fire Weather Watch | LBF | Chase, Hayes, Lincoln, Perkins | 12 hr |
| Aug 5, 4:02 PM CDT | Special Weather Statement | LBF | Keya Paha | 28 min |
| Aug 5, 4:11 PM CDT | Special Weather Statement | LBF | Sherman | 49 min |
| Aug 5, 5:13 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Cherry, Keya Paha, Rock | 47 min |
| Aug 5, 5:39 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Cherry | 21 min |
| Aug 5, 5:49 PM CDT | Severe Thunderstorm Warning | LBF | Holt, Rock | 41 min |
| Aug 5, 5:59 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Brown, Cherry, Thomas | 46 min |
| Aug 5, 6:34 PM CDT | Special Weather Statement | LBF | Sheridan | 41 min |
| Aug 5, 6:45 PM CDT | Special Weather Statement | LBF | Blaine | 45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.