Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 177, NWS North Platte, NE

September 16, 2021Deuel County, Keith County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Sep 16, 2021, 5:47 PM MDT for Deuel County, Keith County, Nebraska. It was in force for 43 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: Sep 16, 2021, 5:47 PM MDT (23:47 UTC)
Expired: Sep 16, 2021, 6:30 PM MDT
In force: 43 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Deuel County, NE, Keith County, NE

The radar

The North Platte radar (KLNX), 151 km from the middle of the area, began a volume at 23:49 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, 5:52 PM MDT	HAIL 1	Big Springs, NE	SPOTTER ESTIMATED QUARTER SIZED HAIL IN TOWN.

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, 11.8 hours before the alert went out and 118 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 989 J/kg
Mixed-layer CIN: -371 J/kg
Mixed-layer LCL: 1558 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

213 
WUUS53 KLBF 162347
SVRLBF
NEC049-101-170030-
/O.NEW.KLBF.SV.W.0177.210916T2347Z-210917T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
547 PM MDT Thu Sep 16 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southwestern Keith County in southwestern Nebraska...
  Southeastern Deuel County in the Panhandle of Nebraska...

* Until 630 PM MDT.

* At 546 PM MDT, a severe thunderstorm was located over Barton, or
  near Big Springs, moving east at 15 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Trained weather spotters.

  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...
  Big Springs, Brule, Barton, Goldeneye State Wildlife Management
  Area and Megeath.

This includes Interstate 80 in Nebraska between mile markers 100 and
119.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4124 10190 4100 10182 4101 10220 4111 10223
TIME...MOT...LOC 2346Z 251DEG 12KT 4107 10214 

HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Snively

1 follow-up statement

506 
WWUS53 KLBF 170009
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
609 PM MDT Thu Sep 16 2021

NEC049-170019-
/O.CAN.KLBF.SV.W.0177.000000T0000Z-210917T0030Z/
Deuel NE-
609 PM MDT Thu Sep 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DEUEL COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4118 10205 4124 10190 4100 10182 4101 10205
TIME...MOT...LOC 0009Z 261DEG 13KT 4106 10199 

$$

NEC101-170030-
/O.CON.KLBF.SV.W.0177.000000T0000Z-210917T0030Z/
Keith NE-
609 PM MDT Thu Sep 16 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR SOUTHWESTERN KEITH COUNTY...

At 609 PM MDT, a severe thunderstorm was located near Big Springs,
moving east at 15 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Trained weather spotters.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Brule and Megeath. 

This includes Interstate 80 in Nebraska between mile markers 109 and
119.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4118 10205 4124 10190 4100 10182 4101 10205
TIME...MOT...LOC 0009Z 261DEG 13KT 4106 10199 

HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Snively

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 16, 4:34 PM MDT	Special Weather Statement	LBF	Deuel	41 min
Sep 16, 5:13 PM MDT	Special Weather Statement	LBF	Deuel	47 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2021 Every 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.