Alert archive / Nebraska / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 84, NWS Hastings, NE

June 22, 2021Polk County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 22, 2021, 9:28 PM CDT for Polk County, Nebraska. It was in force for 28 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
Jun 22, 2021, 9:28 PM CDT (02:28 UTC)
Expired
Jun 22, 2021, 9:56 PM CDT
In force
28 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Polk County, NE

The radar

The Omaha radar (KOAX), 91 km from the middle of the area, began a volume at 02:31 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, 2.5 hours before the alert went out and 90 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, Omaha, NE at 00:00Z on 2021-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 joules per kilogram.LCLLFCEL10008507005003002001001 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, Omaha, NE at 00:00Z on 2021-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.1939587897Sfc1 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
19 J/kg
Mixed-layer CIN
-146 J/kg
Mixed-layer LCL
2740 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

949 
WUUS53 KGID 230228
SVRGID
NEC143-230315-
/O.NEW.KGID.SV.W.0084.210623T0228Z-210623T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Hastings NE
928 PM CDT Tue Jun 22 2021

The National Weather Service in Hastings has issued a

* Severe Thunderstorm Warning for...
  Eastern Polk County in east central Nebraska...

* Until 1015 PM CDT.

* At 928 PM CDT, a severe thunderstorm was located near Columbus,
  moving south at 30 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Shelby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4105 9748 4137 9751 4137 9745 4139 9737
      4105 9737
TIME...MOT...LOC 0228Z 349DEG 26KT 4134 9738 

HAIL...1.25IN
WIND...60MPH
 
$$

JCB
2 follow-up statements
134 
WWUS53 KGID 230247
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
947 PM CDT Tue Jun 22 2021

NEC143-230315-
/O.CON.KGID.SV.W.0084.000000T0000Z-210623T0315Z/
Polk NE-
947 PM CDT Tue Jun 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHEASTERN POLK COUNTY...

At 946 PM CDT, a severe thunderstorm was located near Rising City, or
13 miles south of Columbus, moving south 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...
Shelby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4105 9748 4129 9750 4134 9737 4105 9737
TIME...MOT...LOC 0246Z 347DEG 26KT 4124 9736 

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

JCB
711 
WWUS53 KGID 230256
SVSGID

Severe Weather Statement
National Weather Service Hastings NE
956 PM CDT Tue Jun 22 2021

NEC143-230306-
/O.CAN.KGID.SV.W.0084.000000T0000Z-210623T0315Z/
Polk NE-
956 PM CDT Tue Jun 22 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN POLK COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However small hail and gusty winds are still
possible with this thunderstorm.

LAT...LON 4105 9748 4129 9750 4134 9737 4105 9737
TIME...MOT...LOC 0253Z 349DEG 26KT 4117 9734 

$$

JCB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 7:28 PM CDTSevere Thunderstorm WarningGIDMerrick, Nance, Polk47 min
Jun 22, 7:59 PM CDTSevere Thunderstorm WarningGIDMerrick, Polk, York46 min
Jun 22, 8:42 PM CDTSevere Thunderstorm WarningGIDYork33 min
Jun 22, 9:04 PM CDTSevere Thunderstorm WarningGIDFillmore, York26 min
Jun 22, 9:07 PM CDTSpecial Weather StatementGIDMerrick, Nance38 min
Jun 22, 9:12 PM CDTSevere Thunderstorm WarningGIDMerrick, Nance48 min
Jun 22, 9:49 PM CDTSevere Thunderstorm WarningGIDHamilton, Merrick, Polk, York41 min
Jun 22, 10:28 PM CDTSevere Thunderstorm WarningGIDFillmore, York32 min
Jun 22, 10:40 PM CDTSpecial Weather StatementGIDClay35 min
Jun 22, 10:50 PM CDTSpecial Weather StatementGIDFillmore25 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.