Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 18, NWS Hastings, NE

April 28, 2021Hamilton County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Apr 28, 2021, 2:13 AM CDT for Hamilton County, Nebraska. It was in force for 47 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: Apr 28, 2021, 2:13 AM CDT (07:13 UTC)
Expired: Apr 28, 2021, 3:00 AM CDT
In force: 47 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Hamilton County, NE

The radar

The Grand Island radar (KUEX), 66 km from the middle of the area, began a volume at 07:14 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

Omaha, NE (KOAX), launched 00:00Z, 7.2 hours before the alert went out and 151 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1104 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

321 
WUUS53 KGID 280713
SVRGID
NEC081-280800-
/O.NEW.KGID.SV.W.0018.210428T0713Z-210428T0800Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Hastings NE
213 AM CDT Wed Apr 28 2021

The National Weather Service in Hastings has issued a

* Severe Thunderstorm Warning for...
  Southern Hamilton County in south central Nebraska...

* Until 300 AM CDT.

* At 213 AM CDT, a severe thunderstorm was located near Giltner, or
  14 miles southeast of Grand Island, moving northeast 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...
  Aurora, Hampton and Giltner. 

This includes Interstate 80 between mile markers 320 and 340.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4070 9815 4085 9827 4108 9783 4082 9783
TIME...MOT...LOC 0713Z 245DEG 31KT 4082 9812 

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

Heinlein

1 follow-up statement

998 
WWUS53 KGID 280751
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
251 AM CDT Wed Apr 28 2021

NEC081-280801-
/O.EXP.KGID.SV.W.0018.000000T0000Z-210428T0800Z/
Hamilton NE-
251 AM CDT Wed Apr 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HAMILTON COUNTY WILL
EXPIRE AT 300 AM 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.

LAT...LON 4070 9815 4085 9827 4108 9783 4082 9783
TIME...MOT...LOC 0751Z 245DEG 31KT 4095 9776 

$$

Heinlein

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 10:51 PM CDT	Special Weather Statement	GID	Furnas	39 min
Apr 27, 11:29 PM CDT	Special Weather Statement	GID	Dawson, Furnas, Gosper, Harlan, Phelps	46 min
Apr 27, 11:48 PM CDT	Severe Thunderstorm Warning	GID	Dawson, Gosper, Phelps	42 min
Apr 27, 11:56 PM CDT	Severe Thunderstorm Warning	GID	Furnas, Gosper, Harlan, Phelps	49 min
Apr 28, 12:31 AM CDT	Special Weather Statement	GID	Buffalo	44 min
Apr 28, 12:42 AM CDT	Special Weather Statement	GID	Kearney	48 min
Apr 28, 1:18 AM CDT	Special Weather Statement	GID	Hall	42 min
Apr 28, 1:30 AM CDT	Severe Thunderstorm Warning	GID	Adams, Clay, Hall, Hamilton	45 min
Apr 28, 1:47 AM CDT	Severe Thunderstorm Warning	GID	Buffalo, Hall	43 min
Apr 28, 2:21 AM CDT	Special Weather Statement	GID	Howard, Merrick, Nance	39 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.