Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 113, NWS Cheyenne, WY

July 5, 2011Kimball County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 5, 2011, 6:06 PM MDT for Kimball County, Nebraska. It was in force for 21 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 5, 2011, 6:06 PM MDT (00:06 UTC)
Expired: Jul 5, 2011, 6:27 PM MDT
In force: 21 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Kimball County, NE

The radar

The Cheyenne radar (KCYS), 97 km from the middle of the area, began a volume at 00:07 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

Denver, CO (KDNR), launched 00:00Z, 0.1 hours before the alert went out and 138 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: 2566 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

205 
WUUS55 KCYS 060006
SVRCYS
NEC105-060100-
/O.NEW.KCYS.SV.W.0113.110706T0006Z-110706T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
606 PM MDT TUE JUL 5 2011

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN KIMBALL COUNTY IN THE PANHANDLE OF NEBRASKA...

* UNTIL 700 PM MDT

* AT 603 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 7 MILES SOUTH OF OLIVER RESERVOIR...OR 10 MILES
  SOUTHWEST OF KIMBALL...AND MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  KIMBALL AIRPORT.

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 4110 10389 4122 10377 4109 10337 4099 10340
      4099 10347 4099 10376
TIME...MOT...LOC 0006Z 309DEG 15KT 4112 10377
WIND...HAIL <50MPH 1.00IN

$$

RE

1 follow-up statement

349 
WWUS55 KCYS 060027
SVSCYS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
627 PM MDT TUE JUL 5 2011

NEC105-060034-
/O.CAN.KCYS.SV.W.0113.000000T0000Z-110706T0100Z/
KIMBALL NE-
627 PM MDT TUE JUL 5 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KIMBALL COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND IS MOVING OUT 
OF THE WARNED AREA.  HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS 
THUNDERSTORM OVER EXTREME SOUTHERN KIMBALL COUNTY.

LAT...LON 4110 10389 4122 10377 4109 10337 4099 10340
      4099 10347 4099 10376
TIME...MOT...LOC 0024Z 316DEG 20KT 4101 10367

$$

RE

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 6, 9:25 AM MDT	River Flood Warning	CYS	Scotts Bluff	10 hr
Jul 6, 3:19 PM MDT	Areal Flood Advisory	CYS	Dawes, Sioux	75 min
Jul 6, 3:44 PM MDT	Flash Flood Warning	CYS	Dawes, Sioux	3 hr
Jul 6, 4:59 PM MDT	Areal Flood Advisory	CYS	Box Butte, Dawes, Sioux	3 hr
Jul 6, 5:27 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Box Butte, Morrill, Scotts Bluff	63 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.