Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 89, NWS North Platte, NE

July 9, 2021Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 9, 2021, 9:23 PM CDT for Holt County, Nebraska. It was in force for 52 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: Jul 9, 2021, 9:23 PM CDT (02:23 UTC)
Expired: Jul 9, 2021, 10:15 PM CDT
In force: 52 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Holt County, NE

The radar

The North Platte radar (KLNX), 147 km from the middle of the area, began a volume at 02:27 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
Jul 9, 9:06 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.4 hours before the alert went out and 194 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: 2799 J/kg
Mixed-layer CIN: -162 J/kg
Mixed-layer LCL: 1859 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

As transmitted.

231 
WUUS53 KLBF 100223
SVRLBF
NEC089-100315-
/O.NEW.KLBF.SV.W.0089.210710T0223Z-210710T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service North Platte NE
923 PM CDT Fri Jul 9 2021

The National Weather Service in North Platte has issued a

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

* Until 1015 PM CDT.

* At 923 PM CDT, a severe thunderstorm was located 7 miles northeast
  of Amelia, or 15 miles southwest of O'neill, moving southeast at 40
  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...
  Chambers, Amelia, Inman and Emmet. 

This includes the following highways...
 Highway 20 between mile markers 293 and 298, and between mile
markers 312 and 322.
 Highway 281 between mile markers 158 and 182.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4232 9912 4251 9895 4238 9838 4209 9861
      4210 9891
TIME...MOT...LOC 0223Z 306DEG 37KT 4230 9884 

HAIL...1.00IN
WIND...60MPH
 
$$

Roberg

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:01 PM CDT	Severe Thunderstorm Warning	LBF	Garden, Sheridan	44 min
Jul 9, 7:45 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Garden, Grant	45 min
Jul 9, 7:49 PM CDT	Special Weather Statement	LBF	Blaine	26 min
Jul 9, 8:06 PM CDT	Special Weather Statement	LBF	McPherson	24 min
Jul 9, 8:11 PM CDT	Special Weather Statement	LBF	Loup	34 min
Jul 9, 8:30 PM CDT	Special Weather Statement	LBF	Loup	45 min
Jul 9, 8:31 PM CDT	Special Weather Statement	LBF	McPherson	29 min
Jul 9, 8:45 PM CDT	Special Weather Statement	LBF	Custer	30 min
Jul 9, 8:58 PM CDT	Severe Thunderstorm Warning	LBF	Custer	47 min
Jul 9, 8:59 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Lincoln, Logan	46 min
Jul 9, 9:02 PM CDT	Severe Thunderstorm Warning	LBF	Custer	43 min
Jul 9, 9:04 PM CDT	Special Weather Statement	LBF	Holt	41 min
Jul 9, 9:08 PM CDT	Special Weather Statement	LBF	Wheeler	52 min
Jul 9, 9:27 PM CDT	Severe Thunderstorm Warning	LBF	Custer	33 min
Jul 9, 9:39 PM CDT	Special Weather Statement	LBF	Holt	36 min
Jul 9, 9:42 PM CDT	Severe Thunderstorm Warning	LBF	Custer	48 min
Jul 9, 9:50 PM CDT	Severe Thunderstorm Warning	LBF	Holt	40 min
Jul 9, 10:31 PM CDT	Severe Thunderstorm Warning	LBF	Sheridan	59 min
Jul 9, 11:05 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Cherry, Garden, Grant, Sheridan	55 min
Jul 9, 11:21 PM CDT	Special Weather Statement	LBF	Sheridan	39 min
Jul 9, 11:53 PM CDT	Severe Thunderstorm Warning	LBF	Arthur, Cherry, Garden, Grant, Hooker, Keith and 3 more	67 min
Jul 9, 11:57 PM CDT	Tornado Warning	LBF	Arthur, Grant, Hooker, McPherson	33 min
Jul 10, 12:45 AM CDT	Severe Thunderstorm Warning	LBF	Blaine, Custer, Hooker, Lincoln, Logan, McPherson and 1 more	60 min
Jul 10, 1:20 AM CDT	Special Weather Statement	LBF	Lincoln	40 min
Jul 10, 1:42 AM CDT	Special Weather Statement	LBF	Custer	48 min
Jul 10, 2:18 AM CDT	Special Weather Statement	LBF	Lincoln	42 min
Jul 10, 2:22 AM CDT	Severe Thunderstorm Warning	LBF	Lincoln	53 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.