Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 134, NWS North Platte, NE

August 19, 2021Deuel County, Garden County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 19, 2021, 4:01 PM MDT for Deuel County, Garden County, Nebraska. It was in force for 44 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 19, 2021, 4:01 PM MDT (22:01 UTC)
Expired: Aug 19, 2021, 4:45 PM MDT
In force: 44 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Deuel County, NE, Garden County, NE

The radar

The North Platte radar (KLNX), 162 km from the middle of the area, began a volume at 22:02 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 19, 4:22 PM MDT	HAIL 1	7 Wnw Big Springs, NE	CORRECTED REPORT

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 19, 1:14 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.0 hours before the alert went out and 134 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: 541 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 125 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

818 
WUUS53 KLBF 192201
SVRLBF
NEC049-069-192245-
/O.NEW.KLBF.SV.W.0134.210819T2201Z-210819T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
401 PM MDT Thu Aug 19 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Garden County in the Panhandle of Nebraska...
  Eastern Deuel County in the Panhandle of Nebraska...

* Until 445 PM MDT.

* At 401 PM MDT, a severe thunderstorm was located near Julesburg,
  moving north at 30 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...
  Lewellen, Barton, Ash Hollow State Historical Park, Goldeneye State
  Wildlife Management Area and Windlass Hill.

This includes the following highways...
 Highway 92 between mile markers 115 and 118.
 Interstate 80 in Nebraska between mile markers 90 and 104.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4135 10228 4134 10206 4114 10205 4110 10206
      4100 10216 4100 10232 4102 10241
TIME...MOT...LOC 2201Z 202DEG 24KT 4107 10230 

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

$$

Taylor

1 follow-up statement

440 
WWUS53 KLBF 192217
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
417 PM MDT Thu Aug 19 2021

NEC049-069-192245-
/O.CON.KLBF.SV.W.0134.000000T0000Z-210819T2245Z/
Garden NE-Deuel NE-
417 PM MDT Thu Aug 19 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM MDT
FOR SOUTHEASTERN GARDEN AND EASTERN DEUEL COUNTIES...

At 417 PM MDT, a severe thunderstorm was located 9 miles north of
Barton, or 9 miles northwest of Big Springs, moving northeast at 30
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...
Lewellen, Ash Hollow State Historical Park and Windlass Hill. 

This includes Highway 92 between mile markers 115 and 118.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4135 10228 4134 10206 4114 10205 4110 10206
      4104 10215 4107 10230 4113 10234
TIME...MOT...LOC 2217Z 211DEG 25KT 4116 10221 

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

$$

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 3:00 PM MDT	Special Weather Statement	LBF	Deuel	45 min
Aug 19, 3:13 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	47 min
Aug 19, 3:22 PM MDT	Special Weather Statement	LBF	Sheridan	38 min
Aug 19, 4:02 PM MDT	Areal Flood Advisory	LBF	Deuel	3 hr
Aug 19, 4:35 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Keith	40 min
Aug 19, 4:48 PM MDT	Areal Flood Advisory	LBF	Garden	3 hr
Aug 19, 4:48 PM MDT	Severe Thunderstorm Warning	LBF	Deuel, Garden	27 min
Aug 19, 4:50 PM MDT	Special Weather Statement	LBF	Garden	40 min
Aug 19, 5:00 PM MDT	Special Weather Statement	LBF	Perkins	45 min
Aug 19, 5:10 PM MDT	Tornado Warning	LBF	Chase, Perkins	50 min
Aug 19, 5:17 PM MDT	Severe Thunderstorm Warning	LBF	Keith	43 min
Aug 19, 5:19 PM MDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Arthur	41 min
Aug 19, 5:23 PM MDT	Special Weather Statement	LBF	Grant	52 min
Aug 19, 5:44 PM MDT	Areal Flood Advisory	LBF	Keith	3 hr
Aug 19, 5:59 PM MDT	Severe Thunderstorm Warning	LBF	Arthur, Keith, Lincoln, McPherson	46 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.