Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 178, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Sep 16, 2021, 6:20 PM MDT for Keith County, Perkins County, Nebraska. It was in force for 40 min. 3 reports 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
- Sep 16, 2021, 6:20 PM MDT (00:20 UTC)
- Expired
- Sep 16, 2021, 7:00 PM MDT
- In force
- 40 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Keith County, NE, Perkins County, NE
The radar
The North Platte radar (KLNX), 140 km from the middle of the area, began a volume at 00:23 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 |
|---|---|---|---|
| Sep 16, 6:41 PM MDT | TSTM WND GST 67 | Ogallala, NE | |
| Sep 16, 6:43 PM MDT | HAIL 1 | Ogallala, NE | MPING REPORT. |
| Sep 16, 6:55 PM MDT | TSTM WND DMG | Ogallala, NE | APPROX 3 INCH BRANCHES DOWN VIA TWITTER. |
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 00:00Z, 0.3 hours before the alert went out and 98 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
- 1601 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 2561 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.7
The text
As transmitted.
089
WUUS53 KLBF 170020
SVRLBF
NEC101-135-170100-
/O.NEW.KLBF.SV.W.0178.210917T0020Z-210917T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
620 PM MDT Thu Sep 16 2021
The National Weather Service in North Platte has issued a
* Severe Thunderstorm Warning for...
Northern Perkins County in southwestern Nebraska...
Southern Keith County in southwestern Nebraska...
* Until 700 PM MDT.
* At 619 PM MDT, a severe thunderstorm was located near Brule, or 9
miles southwest of Ogallala, moving east at 25 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Ogallala, Brule, Keystone, Roscoe, Kingsley Dam, Nevens,
Broganville and Megeath.
This includes the following highways...
Highway 61 between mile markers 74 and 98.
Interstate 80 in Nebraska between mile markers 112 and 143.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
If on or near Lake McConaughy, get away from the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 4094 10197 4116 10200 4122 10190 4126 10141
4093 10138
TIME...MOT...LOC 0019Z 257DEG 23KT 4104 10186
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Snively1 follow-up statement
587
WWUS53 KLBF 170037
SVSLBF
Severe Weather Statement
National Weather Service North Platte NE
637 PM MDT Thu Sep 16 2021
NEC101-135-170100-
/O.CON.KLBF.SV.W.0178.000000T0000Z-210917T0100Z/
Perkins NE-Keith NE-
637 PM MDT Thu Sep 16 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR NORTHEASTERN PERKINS AND SOUTHEASTERN KEITH COUNTIES...
At 637 PM MDT, a severe thunderstorm was located near Ogallala,
moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Ogallala, Keystone, Roscoe, Kingsley Dam, Nevens and Broganville.
This includes the following highways...
Highway 61 between mile markers 75 and 97.
Interstate 80 in Nebraska between mile markers 120 and 143.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
If on or near Lake McConaughy, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 4094 10184 4122 10187 4126 10141 4093 10138
TIME...MOT...LOC 0037Z 257DEG 23KT 4107 10171
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SnivelyThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 6:38 PM MDT | Special Weather Statement | LBF | Keith | 52 min |
| Sep 16, 6:51 PM MDT | Special Weather Statement | LBF | Sheridan | 39 min |
| Sep 16, 6:58 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Keith, Lincoln, McPherson, Perkins | 47 min |
| Sep 16, 7:21 PM MDT | Severe Thunderstorm Warning | LBF | Cherry | 39 min |
| Sep 16, 7:27 PM MDT | Special Weather Statement | LBF | Perkins | 33 min |
| Sep 16, 7:33 PM MDT | Special Weather Statement | LBF | Cherry | 42 min |
| Sep 16, 7:35 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Hooker, Lincoln, Logan, McPherson and 1 more | 55 min |
| Sep 16, 7:55 PM MDT | Special Weather Statement | LBF | Cherry | 50 min |
| Sep 16, 8:00 PM MDT | Special Weather Statement | LBF | Lincoln | 45 min |
| Sep 16, 8:09 PM MDT | Special Weather Statement | LBF | Cherry | 36 min |
| Sep 16, 8:27 PM MDT | Special Weather Statement | LBF | Custer, Logan | 63 min |
| Sep 16, 8:31 PM MDT | Special Weather Statement | LBF | Lincoln | 59 min |
| Sep 16, 8:36 PM MDT | Special Weather Statement | LBF | Cherry | 39 min |
| Sep 16, 8:37 PM MDT | Special Weather Statement | LBF | Chase | 68 min |
| Sep 16, 8:47 PM MDT | Special Weather Statement | LBF | Arthur, Hooker, McPherson, Thomas | 43 min |
| Sep 16, 8:56 PM MDT | Special Weather Statement | LBF | Garfield, Holt, Loup, Rock | 49 min |
| Sep 16, 9:15 PM MDT | Special Weather Statement | LBF | Lincoln | 45 min |
| Sep 16, 9:28 PM MDT | Special Weather Statement | LBF | Custer | 62 min |
| Sep 16, 9:30 PM MDT | Special Weather Statement | LBF | McPherson | 45 min |
| Sep 16, 9:50 PM MDT | Special Weather Statement | LBF | Lincoln | 25 min |
| Sep 16, 9:54 PM MDT | Special Weather Statement | LBF | Boyd | 51 min |
| Sep 16, 9:56 PM MDT | Special Weather Statement | LBF | Chase | 34 min |
| Sep 16, 10:14 PM MDT | Special Weather Statement | LBF | Logan, Thomas | 46 min |
| Sep 16, 10:21 PM MDT | Special Weather Statement | LBF | Chase, Perkins | 39 min |
| Sep 16, 10:57 PM MDT | Special Weather Statement | LBF | Hayes, Keith, Perkins | 48 min |
| Sep 16, 10:58 PM MDT | Special Weather Statement | LBF | Blaine | 47 min |
| Sep 16, 11:42 PM MDT | Special Weather Statement | LBF | Lincoln | 48 min |
| Sep 17, 12:30 AM MDT | Special Weather Statement | LBF | Frontier | 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.