Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 158, NWS North Platte, NE

August 28, 20216 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 28, 2021, 6:35 PM CDT for 6 counties in Nebraska. It was in force for 40 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 28, 2021, 6:35 PM CDT (23:35 UTC)
Expired
Aug 28, 2021, 7:15 PM CDT
In force
40 min
Issued by
NWS North Platte, NE
Area
Storm-based polygon
Tornado
Possible
Damage threat
Considerable
Hail
1.75 in
Wind
60.0 mph

Counties Blaine County, NE, Custer County, NE, Garfield County, NE, Holt County, NE, Loup County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 75 km from the middle of the area, began a volume at 23:38 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.

IssuedProductOfficeLasted
Aug 28, 3:57 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.6 hours before the alert went out and 114 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2021-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 269 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2021-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
269 J/kg
Mixed-layer CIN
-487 J/kg
Mixed-layer LCL
2050 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

472 
WUUS53 KLBF 282335
SVRLBF
NEC009-041-071-089-115-149-290015-
/O.NEW.KLBF.SV.W.0158.210828T2335Z-210829T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
635 PM CDT Sat Aug 28 2021

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Southeastern Rock County in north central Nebraska...
  Loup County in north central Nebraska...
  Northwestern Garfield County in north central Nebraska...
  Southwestern Holt County in north central Nebraska...
  Northwestern Custer County in central Nebraska...
  Southern Blaine County in north central Nebraska...

* Until 715 PM CDT.

* At 634 PM CDT, a severe thunderstorm was located 9 miles southeast
  of Brewster, moving east at 20 mph.

  HAZARD...Golf 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...
  Taylor, Dunning, Amelia, Calamus Reservoir State Recreation Area,
  Milburn, Milburn Diversion Dam State Wildlife Management Area,
  Almeria Meadow State Wildlife Management Area, Hannamon Bayou
  Campground, Carson Lake, Linscott, Sunfish Lake, Horseshoe Bend
  Lake, Almeria, Nunda Shoal Campground, Valley View Flat Campground
  and Gates.

This includes the following highways...
 Highway 183 between mile markers 124 and 147.
 Highway 2 between mile markers 238 and 253.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4173 10025 4178 10021 4229 9903 4217 9871
      4162 9963
TIME...MOT...LOC 2334Z 277DEG 16KT 4182 9977 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Roberg
1 follow-up statement
026 
WWUS53 KLBF 282354
SVSLBF

Severe Weather Statement
National Weather Service North Platte NE
654 PM CDT Sat Aug 28 2021

NEC009-041-071-089-115-149-290015-
/O.CON.KLBF.SV.W.0158.000000T0000Z-210829T0015Z/
Rock NE-Loup NE-Garfield NE-Holt NE-Custer NE-Blaine NE-
654 PM CDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR SOUTHEASTERN ROCK...LOUP...NORTHWESTERN GARFIELD...SOUTHWESTERN
HOLT...NORTHWESTERN CUSTER AND SOUTHERN BLAINE COUNTIES...

At 653 PM CDT, severe thunderstorms were located along a line
extending from near Chambers to 7 miles west of Taylor to 8 miles
south of Dunning, moving southeast at 15 mph.

HAZARD...Two inch 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...
Taylor, Dunning, Amelia, Calamus Reservoir State Recreation Area,
Milburn, Milburn Diversion Dam State Wildlife Management Area,
Almeria Meadow State Wildlife Management Area, Hannamon Bayou
Campground, Carson Lake, Linscott, Sunfish Lake, Horseshoe Bend Lake,
Almeria, Nunda Shoal Campground, Valley View Flat Campground and
Gates.

This includes the following highways...
 Highway 183 between mile markers 124 and 147.
 Highway 2 between mile markers 238 and 253.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4173 10025 4178 10021 4229 9903 4217 9871
      4162 9963
TIME...MOT...LOC 2353Z 304DEG 14KT 4219 9883 4180 9952 4171 10005 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Roberg

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 12:56 AM CDTSpecial Weather StatementLBFGarden49 min
Aug 28, 1:36 AM CDTSpecial Weather StatementLBFGarden, Grant39 min
Aug 28, 2:14 AM CDTSpecial Weather StatementLBFGarden, Grant46 min
Aug 28, 2:35 AM CDTSpecial Weather StatementLBFCherry25 min
Aug 28, 2:45 AM CDTSevere Thunderstorm WarningLBFCherry45 min
Aug 28, 2:59 AM CDTSpecial Weather StatementLBFGarden, Grant31 min
Aug 28, 3:27 AM CDTSevere Thunderstorm WarningLBFCherry, Keya Paha33 min
Aug 28, 3:30 AM CDTSpecial Weather StatementLBFGrant60 min
Aug 28, 3:32 AM CDTSpecial Weather StatementLBFCherry58 min
Aug 28, 3:58 AM CDTSpecial Weather StatementLBFKeya Paha62 min
Aug 28, 4:29 AM CDTSpecial Weather StatementLBFHooker61 min
Aug 28, 4:59 AM CDTSpecial Weather StatementLBFCherry46 min
Aug 28, 7:04 AM CDTSpecial Weather StatementLBFCherry56 min
Aug 28, 8:49 AM CDTSpecial Weather StatementLBFGrant41 min
Aug 28, 12:39 PM CDTSpecial Weather StatementLBFKeya Paha36 min
Aug 28, 1:24 PM CDTSpecial Weather StatementLBFBoyd51 min
Aug 28, 1:53 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt37 min
Aug 28, 4:17 PM CDTSevere Thunderstorm WarningLBFCuster43 min
Aug 28, 4:46 PM CDTSpecial Weather StatementLBFFrontier44 min
Aug 28, 5:02 PM CDTSpecial Weather StatementLBFCuster43 min
Aug 28, 5:12 PM CDTSpecial Weather StatementLBFLincoln33 min
Aug 28, 5:25 PM CDTSpecial Weather StatementLBFLoup50 min
Aug 28, 5:29 PM CDTSevere Thunderstorm WarningLBFCuster46 min
Aug 28, 5:30 PM CDTSpecial Weather StatementLBFFrontier30 min
Aug 28, 5:37 PM CDTSpecial Weather StatementLBFBlaine38 min
Aug 28, 5:46 PM CDTSevere Thunderstorm WarningLBFBlaine, Garfield, Holt, Loup, Rock59 min
Aug 28, 6:15 PM CDTSevere Thunderstorm WarningLBFCuster45 min
Aug 28, 6:16 PM CDTSpecial Weather StatementLBFLogan29 min
Aug 28, 6:18 PM CDTSpecial Weather StatementLBFCuster42 min
Aug 28, 6:21 PM CDTSevere Thunderstorm WarningLBFCuster, Logan39 min
Aug 28, 6:42 PM CDTSpecial Weather StatementLBFFrontier33 min
Aug 28, 6:57 PM CDTSevere Thunderstorm Warning Considerable damage threatLBFGarfield, Loup48 min
Aug 28, 6:57 PM CDTSevere Thunderstorm WarningLBFCuster, Logan48 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.