Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 152, NWS North Platte, NE

August 28, 2021Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 28, 2021, 1:53 PM CDT for Boyd County, Holt County, Nebraska. It was in force for 37 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, 1:53 PM CDT (18:53 UTC)
Expired: Aug 28, 2021, 2:30 PM CDT
In force: 37 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Boyd County, NE, Holt County, NE

The radar

The Sioux Falls radar (KFSD), 170 km from the middle of the area, began a volume at 18:56 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 6.9 hours before the alert went out and 222 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: 9 J/kg
Mixed-layer CIN: -334 J/kg
Mixed-layer LCL: 1540 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 558 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

904 
WUUS53 KLBF 281853
SVRLBF
NEC015-089-282015-
/O.NEW.KLBF.SV.W.0152.210828T1853Z-210828T2015Z/

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

The National Weather Service in North Platte has issued a

* Severe Thunderstorm Warning for...
  Northwestern Holt County in north central Nebraska...
  Boyd County in north central Nebraska...

* Until 315 PM CDT.

* At 152 PM CDT, severe thunderstorms were located along a line
  extending from near Bonesteel to 6 miles southeast of Naper to 11
  miles north of Stuart, moving east at 35 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Spencer, Butte, Lynch, Gross, Bristow, Dustin, Anoka, Monowi,
  Spencer Dam, Parshall Bridge State Wildlife Management Area, Hull
  Lake State Wildlife Management Area and Anncar.

This includes the following highways...
 Highway 281 between mile markers 208 and 223.
 Highway 12 between mile markers 102 and 143.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4296 9848 4293 9844 4293 9841 4288 9831
      4284 9831 4283 9832 4273 9922 4290 9907
      4300 9908 4300 9850
TIME...MOT...LOC 1852Z 254DEG 28KT 4302 9899 4292 9898 4277 9915 

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

$$

Sporer

2 follow-up statements

034 
WWUS53 KLBF 281911
SVSLBF

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

NEC089-281921-
/O.CAN.KLBF.SV.W.0152.000000T0000Z-210828T2015Z/
Holt NE-
211 PM CDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HOLT COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4296 9848 4293 9844 4293 9841 4288 9831
      4284 9831 4282 9836 4280 9862 4287 9892
      4290 9895 4289 9901 4290 9907 4300 9908
      4300 9850
TIME...MOT...LOC 1911Z 254DEG 28KT 4306 9881 4296 9880 4281 9897 

$$

NEC015-282015-
/O.CON.KLBF.SV.W.0152.000000T0000Z-210828T2015Z/
Boyd NE-
211 PM CDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT
FOR BOYD COUNTY...

At 211 PM CDT, severe thunderstorms were located along a line
extending from 7 miles east of Bonesteel to near Butte to 12 miles
southeast of Naper, moving east at 30 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Spencer, Butte, Lynch, Gross, Bristow, Anoka, Monowi and Hull Lake
State Wildlife Management Area.

This includes the following highways...
 Highway 281 between mile markers 208 and 223.
 Highway 12 between mile markers 102 and 143.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4296 9848 4293 9844 4293 9841 4288 9831
      4284 9831 4282 9836 4280 9862 4287 9892
      4290 9895 4289 9901 4290 9907 4300 9908
      4300 9850
TIME...MOT...LOC 1911Z 254DEG 28KT 4306 9881 4296 9880 4281 9897 

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

$$

Sporer

220 
WWUS53 KLBF 281930
SVSLBF

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

NEC015-281938-
/O.CAN.KLBF.SV.W.0152.000000T0000Z-210828T2015Z/
Boyd NE-
230 PM CDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR BOYD COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4296 9848 4293 9844 4293 9841 4288 9831
      4284 9831 4282 9836 4280 9862 4287 9892
      4290 9895 4289 9901 4290 9907 4300 9908
      4300 9850
TIME...MOT...LOC 1927Z 254DEG 28KT 4310 9864 4300 9863 4285 9880 

$$

Sporer

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 12:56 AM CDT	Special Weather Statement	LBF	Garden	49 min
Aug 28, 1:36 AM CDT	Special Weather Statement	LBF	Garden, Grant	39 min
Aug 28, 2:14 AM CDT	Special Weather Statement	LBF	Garden, Grant	46 min
Aug 28, 2:35 AM CDT	Special Weather Statement	LBF	Cherry	25 min
Aug 28, 2:45 AM CDT	Severe Thunderstorm Warning	LBF	Cherry	45 min
Aug 28, 2:59 AM CDT	Special Weather Statement	LBF	Garden, Grant	31 min
Aug 28, 3:27 AM CDT	Severe Thunderstorm Warning	LBF	Cherry, Keya Paha	33 min
Aug 28, 3:30 AM CDT	Special Weather Statement	LBF	Grant	60 min
Aug 28, 3:32 AM CDT	Special Weather Statement	LBF	Cherry	58 min
Aug 28, 3:58 AM CDT	Special Weather Statement	LBF	Keya Paha	62 min
Aug 28, 4:29 AM CDT	Special Weather Statement	LBF	Hooker	61 min
Aug 28, 4:59 AM CDT	Special Weather Statement	LBF	Cherry	46 min
Aug 28, 7:04 AM CDT	Special Weather Statement	LBF	Cherry	56 min
Aug 28, 8:49 AM CDT	Special Weather Statement	LBF	Grant	41 min
Aug 28, 12:39 PM CDT	Special Weather Statement	LBF	Keya Paha	36 min
Aug 28, 1:24 PM CDT	Special Weather Statement	LBF	Boyd	51 min
Aug 28, 4:17 PM CDT	Severe Thunderstorm Warning	LBF	Custer	43 min
Aug 28, 4:46 PM CDT	Special Weather Statement	LBF	Frontier	44 min
Aug 28, 5:02 PM CDT	Special Weather Statement	LBF	Custer	43 min
Aug 28, 5:12 PM CDT	Special Weather Statement	LBF	Lincoln	33 min
Aug 28, 5:25 PM CDT	Special Weather Statement	LBF	Loup	50 min
Aug 28, 5:29 PM CDT	Severe Thunderstorm Warning	LBF	Custer	46 min
Aug 28, 5:30 PM CDT	Special Weather Statement	LBF	Frontier	30 min
Aug 28, 5:37 PM CDT	Special Weather Statement	LBF	Blaine	38 min
Aug 28, 5:46 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Garfield, Holt, Loup, Rock	59 min
Aug 28, 6:15 PM CDT	Severe Thunderstorm Warning	LBF	Custer	45 min
Aug 28, 6:16 PM CDT	Special Weather Statement	LBF	Logan	29 min
Aug 28, 6:18 PM CDT	Special Weather Statement	LBF	Custer	42 min
Aug 28, 6:21 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	39 min
Aug 28, 6:35 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Blaine, Custer, Garfield, Holt, Loup, Rock	40 min
Aug 28, 6:42 PM CDT	Special Weather Statement	LBF	Frontier	33 min
Aug 28, 6:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LBF	Garfield, Loup	48 min
Aug 28, 6:57 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	48 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.