Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 149, NWS North Platte, NE

August 26, 2021Frontier County, Hayes County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 26, 2021, 6:50 PM CDT for Frontier County, Hayes County, Lincoln County, Nebraska. It was in force for 40 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 26, 2021, 6:50 PM CDT (23:50 UTC)
Expired: Aug 26, 2021, 7:30 PM CDT
In force: 40 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Frontier County, NE, Hayes County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 144 km from the middle of the area, began a volume at 23:53 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 26, 6:51 PM CDT	HAIL 1	9 Nne Hayes Center, 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, 11.8 hours before the alert went out and 55 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: 578 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 1860 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -204 m²/s²
0-3 km storm-relative helicity: -123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

775 
WUUS53 KLBF 262350
SVRLBF
NEC063-085-111-270030-
/O.NEW.KLBF.SV.W.0149.210826T2350Z-210827T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
650 PM CDT Thu Aug 26 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northwestern Frontier County in southwestern Nebraska...
  Southeastern Lincoln County in southwestern Nebraska...
  Northern Hayes County in southwestern Nebraska...

* Until 730 PM CDT.

* At 649 PM CDT, a severe thunderstorm was located 9 miles northeast
  of Hayes Center, moving northeast at 30 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...
  Wellfleet, Dickens, Maywood, Marengo, Hansen Memorial Reserve State
  Wildlife Management Area, Hayes Center State Wildlife Management
  Area and Somerset.

This includes Highway 83 between mile markers 45 and 73.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4049 10094 4061 10123 4105 10084 4074 10029
TIME...MOT...LOC 2349Z 225DEG 28KT 4062 10092 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

NMJ

2 follow-up statements

002 
WWUS53 KLBF 270005
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
705 PM CDT Thu Aug 26 2021

NEC063-085-111-270030-
/O.CON.KLBF.SV.W.0149.000000T0000Z-210827T0030Z/
Frontier NE-Lincoln NE-Hayes NE-
705 PM CDT Thu Aug 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR NORTHWESTERN FRONTIER...SOUTHEASTERN LINCOLN AND NORTHEASTERN
HAYES COUNTIES...

At 704 PM CDT, a severe thunderstorm was located near Wellfleet, or
15 miles northeast of Hayes Center, moving northeast at 30 mph.

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

SOURCE...Public. At 651 PM CDT, quarter size hail was reported 
         9 north northeast of Hayes Center.

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

Locations impacted include...
Wellfleet, Maywood, Hansen Memorial Reserve State Wildlife Management
Area, Marengo and Somerset.

This includes Highway 83 between mile markers 45 and 73.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4070 10104 4105 10084 4074 10029 4055 10079
TIME...MOT...LOC 0004Z 223DEG 27KT 4069 10083 

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

$$

NMJ

011 
WWUS53 KLBF 270027
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
727 PM CDT Thu Aug 26 2021

NEC063-085-111-270037-
/O.EXP.KLBF.SV.W.0149.000000T0000Z-210827T0030Z/
Frontier NE-Lincoln NE-Hayes NE-
727 PM CDT Thu Aug 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN FRONTIER...
SOUTHEASTERN LINCOLN AND NORTHEASTERN HAYES COUNTIES WILL EXPIRE AT
730 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 4070 10104 4105 10084 4074 10029 4055 10079
TIME...MOT...LOC 0027Z 225DEG 28KT 4081 10067 

$$

NMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 12:57 AM CDT	Special Weather Statement	LBF	Custer	48 min
Aug 26, 1:29 AM CDT	Special Weather Statement	LBF	Custer	46 min
Aug 26, 2:09 AM CDT	Special Weather Statement	LBF	Garfield	51 min
Aug 26, 2:24 AM CDT	Special Weather Statement	LBF	Custer	51 min
Aug 26, 2:25 AM CDT	Special Weather Statement	LBF	Wheeler	50 min
Aug 26, 2:36 AM CDT	Severe Thunderstorm Warning	LBF	Custer	25 min
Aug 26, 3:10 AM CDT	Special Weather Statement	LBF	Wheeler	50 min
Aug 26, 3:43 AM CDT	Special Weather Statement	LBF	Holt	47 min
Aug 26, 3:55 AM CDT	Special Weather Statement	LBF	Wheeler	50 min
Aug 26, 8:24 AM CDT	Areal Flood Advisory	LBF	Keith, Perkins	5 hr
Aug 26, 6:27 PM CDT	Special Weather Statement	LBF	Hayes	33 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.