Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 21, NWS Cheyenne, WY

June 7, 2001Kimball County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 7, 2001, 7:55 PM MDT for Kimball County, Nebraska. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jun 7, 2001, 7:55 PM MDT (01:55 UTC)
Expired: Jun 7, 2001, 8:30 PM MDT
In force: 35 min
Issued by: NWS Cheyenne, WY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Kimball County, NE

The radar

The Cheyenne radar (KCYS), 86 km from the middle of the area, began a volume at 01:58 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
Jun 7, 8:30 PM MDT	Hail 0.75	Bushnell, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.9 hours before the alert went out and 150 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: 1603 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1210 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: -56 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.9

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KCYS 080206
SVRCYS
NEC105-080230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...RETRANSMITTED
NATIONAL WEATHER SERVICE CHEYENNE WY
755 PM MDT THU JUN 7 2001

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A

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

* UNTIL 830 PM MDT

* AT 753 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM 17 MILES WEST OF KIMBALL...MOVING SOUTHEAST
  AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  9 MILES NORTHWEST OF KIMBALL AT 830 PM MDT

* OTHER LOCATIONS IN THE WARNING INCLUDE DIX

REPORT SEVERE WE2ATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN CHEYENNE.

LAT...LON 4125 10404 4101 10405 4101 10338 4123 10337

STARK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 7:39 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne	36 min
Jun 7, 8:41 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne	34 min
Jun 7, 9:04 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne	26 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.