Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 145, NWS North Platte, NE

August 19, 2021Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 19, 2021, 9:56 PM CDT for Lincoln County, Nebraska. It was in force for 49 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: Aug 19, 2021, 9:56 PM CDT (02:56 UTC)
Expired: Aug 19, 2021, 10:45 PM CDT
In force: 49 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Lincoln County, NE

The radar

The North Platte radar (KLNX), 84 km from the middle of the area, began a volume at 02:59 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 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, 6:25 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.9 hours before the alert went out and 10 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: 1368 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1220 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 208 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 10.2

Open this sounding in Storm Lab

The text

As transmitted.

850 
WUUS53 KLBF 200256
SVRLBF
NEC111-200345-
/O.NEW.KLBF.SV.W.0145.210820T0256Z-210820T0345Z/

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

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northeastern Lincoln County in southwestern Nebraska...

* Until 1045 PM CDT.

* At 955 PM CDT, severe thunderstorms were located along a line
  extending from 12 miles south of Ringgold to 6 miles east of
  Hershey to 8 miles southeast of Sutherland Reservoir State
  Recreation Area, moving east at 30 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  North Platte, Brady, Maxwell, Lake Maloney State Recreation Area,
  North Platte Airport, Keith and Birdwood.

This includes the following highways...
 Highway 97 between mile markers 1 and 14.
 Interstate 80 in Nebraska between mile markers 166 and 198.
 Highway 83 between mile markers 76 and 104.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for southwestern
Nebraska.

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

&&

LAT...LON 4105 10103 4139 10087 4138 10025 4139 10024
      4125 10023 4113 10029 4099 10040
TIME...MOT...LOC 0255Z 277DEG 25KT 4133 10082 4119 10088 4106 10097 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Taylor

1 follow-up statement

076 
WWUS53 KLBF 200342
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
1042 PM CDT Thu Aug 19 2021

NEC111-200352-
/O.EXP.KLBF.SV.W.0145.000000T0000Z-210820T0345Z/
Lincoln NE-
1042 PM CDT Thu Aug 19 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LINCOLN COUNTY
WILL EXPIRE AT 1045 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, gusty winds and heavy rain are still possible with these
thunderstorms.

A Tornado Watch remains in effect until midnight CDT for southwestern
Nebraska.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
North Platte.

LAT...LON 4105 10103 4139 10087 4138 10025 4139 10024
      4125 10023 4113 10029 4099 10040
TIME...MOT...LOC 0342Z 277DEG 25KT 4129 10040 4115 10046 4102 10055 

$$

Taylor

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 7:02 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Perkins	43 min
Aug 19, 7:13 PM CDT	Flash Flood Warning	LBF	Keith	3 hr
Aug 19, 7:32 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	43 min
Aug 19, 7:42 PM CDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	48 min
Aug 19, 7:50 PM CDT	Areal Flood Advisory	LBF	Arthur	2 hr
Aug 19, 7:59 PM CDT	Areal Flood Advisory	LBF	Chase, Perkins	2 hr
Aug 19, 8:13 PM CDT	Areal Flood Warning	LBF	Chase, Perkins	24 hr
Aug 19, 8:39 PM CDT	Areal Flood Advisory	LBF	Keith, Lincoln, Perkins	3 hr
Aug 19, 8:42 PM CDT	Special Weather Statement	LBF	Perkins	48 min
Aug 19, 9:14 PM CDT	Special Weather Statement	LBF	Chase	46 min
Aug 19, 9:17 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Hayes, Lincoln, Perkins	43 min
Aug 19, 9:28 PM CDT	Special Weather Statement	LBF	Lincoln	47 min
Aug 19, 9:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Chase, Frontier, Hayes, Lincoln, Perkins	50 min
Aug 19, 9:51 PM CDT	Areal Flood Advisory	LBF	Custer, Keith, Lincoln	4 hr
Aug 19, 10:34 PM CDT	Special Weather Statement	LBF	Frontier, Hayes	41 min
Aug 19, 10:41 PM CDT	Special Weather Statement	LBF	Dawson	49 min
Aug 19, 11:22 PM CDT	Special Weather Statement	LBF	Custer	38 min
Aug 19, 11:28 PM CDT	Special Weather Statement	LBF	Frontier	47 min
Aug 19, 11:32 PM CDT	Special Weather Statement	LBF	Chase	43 min
Aug 20, 12:15 AM CDT	Special Weather Statement	LBF	Chase	45 min
Aug 20, 12:58 AM CDT	Special Weather Statement	LBF	Hayes	47 min
Aug 20, 1:39 AM CDT	Areal Flood Warning	LBF	Chase, Hayes	19 hr
Aug 20, 1:50 AM CDT	Areal Flood Advisory	LBF	Lincoln	2 hr
Aug 20, 1:56 AM CDT	Special Weather Statement	LBF	Lincoln	49 min
Aug 20, 3:12 AM CDT	Special Weather Statement	LBF	Custer	48 min
Aug 20, 10:35 AM CDT	River Flood Advisory	LBF	Hayes	10 hr
Aug 20, 2:40 PM CDT	River Flood Advisory	LBF	Lincoln	24 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.