Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 9, NWS Hastings, NE

April 6, 2021Dawson County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Apr 6, 2021, 7:00 PM CDT for Dawson County, Nebraska. It was in force for 30 min. 4 reports 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
Apr 6, 2021, 7:00 PM CDT (00:00 UTC)
Expired
Apr 6, 2021, 7:30 PM CDT
In force
30 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Dawson County, NE

The radar

The Grand Island radar (KUEX), 120 km from the middle of the area, began a volume at 00:03 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

TimeReportWhereRemark
Apr 6, 7:10 PM CDTHAIL 0.888 Nnw Overton, NEHAIL ONGOING AND COULD HEAR IN THE BACKGROUND. FAIRLY UNIFORM IN SIZE BETWEEN PENNIES AND NICKELS.
Apr 6, 7:15 PM CDTHAIL 18 Nnw Overton, NEHAIL LASTED FOR ABOUT 10 MINUTES AND COVERED THE GROUND. A FEW QUARTERS MIXED IN.
Apr 6, 7:28 PM CDTHAIL 0.88Sumner, NE
Apr 6, 7:28 PM CDTHAIL 1.25Sumner, NEFB REPORT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 6, 4:48 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.0 hours before the alert went out and 86 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 00:00Z on 2021-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2021-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
670 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
362 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted.

041 
WUUS53 KGID 070000
SVRGID
NEC047-070030-
/O.NEW.KGID.SV.W.0009.210407T0000Z-210407T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Hastings NE
700 PM CDT Tue Apr 6 2021

The National Weather Service in Hastings has issued a

* Severe Thunderstorm Warning for...
  Eastern Dawson County in south central Nebraska...

* Until 730 PM CDT.

* At 700 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles north of Lexington to near Overton, moving
  northeast at 25 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...
  Sumner and Eddyville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4105 9970 4105 9943 4087 9943 4072 9960
      4088 9979
TIME...MOT...LOC 0000Z 232DEG 20KT 4090 9974 4078 9963 

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

Pfannkuch
2 follow-up statements
014 
WWUS53 KGID 070013
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
713 PM CDT Tue Apr 6 2021

NEC047-070030-
/O.CON.KGID.SV.W.0009.000000T0000Z-210407T0030Z/
Dawson NE-
713 PM CDT Tue Apr 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR NORTHEASTERN DAWSON COUNTY...

At 712 PM CDT, a severe thunderstorm was located near Sumner, or 11
miles northeast of Lexington, moving northeast at 30 mph.

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

SOURCE...Radar indicated. Also, at 710 PM CDT, a trained spotter 
         reported nickel size hail 8 miles north-northwest of 
         Overton. 

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

Locations impacted include...
Sumner and Eddyville, and rural areas of northeastern Dawson County. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4105 9970 4105 9943 4087 9943 4079 9953
      4087 9973
TIME...MOT...LOC 0012Z 220DEG 26KT 4088 9956 

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

Pfannkuch
949 
WWUS53 KGID 070023
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
723 PM CDT Tue Apr 6 2021

NEC047-070030-
/O.CON.KGID.SV.W.0009.000000T0000Z-210407T0030Z/
Dawson NE-
723 PM CDT Tue Apr 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR NORTHEASTERN DAWSON COUNTY...

At 722 PM CDT, a severe thunderstorm was located over Sumner, or 15
miles northeast of Lexington, moving northeast at 25 mph.

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

SOURCE...Radar indicated. Also, at 715 PM CDT, a trained spotter 
         reported quarter size hail 8 miles north-northwest of 
         Overton. 

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

Locations impacted include...
Sumner, and rural areas of northeastern Dawson County. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4105 9962 4105 9943 4087 9943 4084 9949
      4090 9963
TIME...MOT...LOC 0022Z 232DEG 20KT 4092 9950 

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

Pfannkuch

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 7:06 PM CDTSevere Thunderstorm WarningGIDFranklin, Webster15 min
Apr 6, 7:29 PM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson20 min
Apr 6, 7:40 PM CDTSpecial Weather StatementGIDSherman35 min
Apr 6, 7:52 PM CDTSpecial Weather StatementGIDBuffalo23 min
Apr 6, 8:04 PM CDTSpecial Weather StatementGIDHoward, Kearney41 min
Apr 6, 8:15 PM CDTSpecial Weather StatementGIDBuffalo, Sherman, Valley30 min
Apr 6, 8:45 PM CDTSpecial Weather StatementGIDNuckolls45 min
Apr 6, 11:28 PM CDTSpecial Weather StatementGIDThayer47 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.