Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 252, NWS Hastings, NE

July 21, 2011Jewell County, Kansas; Nuckolls County, Thayer County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jul 21, 2011, 9:39 PM CDT for Jewell County, Kansas; Nuckolls County, Thayer County, Nebraska. It was in force for 51 min. 2 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: Jul 21, 2011, 9:39 PM CDT (02:39 UTC)
Expired: Jul 21, 2011, 10:30 PM CDT
In force: 51 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Jewell County, KS, Nuckolls County, NE, Thayer County, NE

The radar

The Grand Island radar (KUEX), 63 km from the middle of the area, began a volume at 02:41 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

Time	Report	Where	Remark
Jul 21, 9:40 PM CDT	TSTM WND GST 60	3 E Superior, NE
Jul 21, 10:13 PM CDT	TSTM WND GST 67	3 Ene Webber, KS

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.

Issued	Product	Office	Lasted
Jul 21, 7:47 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.7 hours before the alert went out and 188 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: 2480 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1131 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 460 m²/s²
Significant tornado parameter: 3.8
Supercell composite: 43.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

077 
WUUS53 KGID 220239
SVRGID
KSC089-NEC129-169-220330-
/O.NEW.KGID.SV.W.0252.110722T0239Z-110722T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
939 PM CDT THU JUL 21 2011

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN JEWELL COUNTY IN NORTH CENTRAL KANSAS...
  SOUTHEASTERN NUCKOLLS COUNTY IN SOUTH CENTRAL NEBRASKA...
  SOUTHWESTERN THAYER COUNTY IN SOUTH CENTRAL NEBRASKA...

* UNTIL 1030 PM CDT

* AT 936 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR HARDY...OR 36 MILES
  NORTHWEST OF CONCORDIA...AND MOVING EAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HARDY...RUSKIN...BYRON...DESHLER AND CHESTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4000 9755 4000 9792 3994 9793 3996 9805
      4015 9808 4016 9754
TIME...MOT...LOC 0240Z 272DEG 16KT 4003 9797
WIND...HAIL 60MPH <.75IN

$$
HEINLEIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 9:26 PM CDT	Severe Thunderstorm Warning	GID	Jewell, Smith	49 min
Jul 21, 10:07 PM CDT	Severe Thunderstorm Warning	GID	Jewell	38 min
Jul 22, 4:03 AM CDT	Excessive Heat Warning	GID	Jewell, Mitchell, Osborne, Phillips, Rooks, Smith	41 hr
Jul 21, 9:03 PM CDT	Special Weather Statement	GID	Webster	42 min
Jul 21, 10:24 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	27 min
Jul 21, 10:45 PM CDT	Areal Flood Warning	GID	Nuckolls	6 hr
Jul 22, 12:34 AM CDT	Special Weather Statement	GID	Webster	41 min
Jul 22, 1:18 AM CDT	Special Weather Statement	GID	Webster	27 min
Jul 22, 4:03 AM CDT	Heat Advisory	GID	Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 16 more	17 hr

Nearby

Severe Thunderstorm Warnings in Nebraska, 2011 Severe Thunderstorm Warnings in Kansas, 2011 Every severe thunderstorm warning in 2011

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.