Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 39, NWS Cheyenne, WY

June 22, 2001Kimball County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 22, 2001, 6:28 PM MDT for Kimball County, Nebraska. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 22, 2001, 6:28 PM MDT (00:28 UTC)
Expired: Jun 22, 2001, 6:55 PM MDT
In force: 27 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

County Kimball County, NE

The radar

The Cheyenne radar (KCYS), 91 km from the middle of the area, began a volume at 00:29 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, 0.5 hours before the alert went out and 153 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: 203 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 3474 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: -29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 3:20 PM MDT, 3 hours 8 minutes earlier.

Area forecast discussion, Jun 22, 3:20 PM MDT, 3 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
320 PM MDT FRI JUN 22 2001

FEW WK TSTMS IN CWA THIS AFTN ALG LAR RANGE...AND WILL CONT
IDEA OF ISOLD POPS MNLY JUST FOR SE WY EARLY THIS EVENING.
MDLS SIMILAR IN TAKING UPR RDG AXIS FROM NV/UT NEWD TO ND
TNGT TO A POSITION FROM NM INTO UPR MS VLY SAT AFTN AS STG
UPR HI SHIFTS TO THE ESE.  ALL OF THE MDLS SHOW A SHORTWAVE
TROF ROTATING ACRS SRN WY AND NRN CO SAT AFTN.  WHILE AVN
LOOKS TOO STG...SHOULD BE ENOUGH DYNAMICS TO GO ALONG WITH
BETTER INSTABILITY TO GET POPS INTO 20 PERCENT CATEGORY BY
SAT EVENING...ESPECIALLY MTNS EWD.  MOST OF THESE STORMS WILL
BE THE GUSTY WIND PRODUCERS.  SWLY FLOW ALF AND HIGH UPR HGTS
RMN OVER THE AREA ON SUN BHND THE SHORTWAVE TROF DISCUSSED ABV.
WILL ONLY MENTION ISOLD TSTMS IN WY PTN CWA SUN AFTN.  TEMPS
WILL BE QUITE WARM AS PER GUIDANCE NUMBERS WITH SLGT ADJUSTMENTS.

.EXTENDED DISCUSSION...
UPR RIDGE CONTS TO SHIFT E INTO THE MISS VLY WITH TROF EDGING
ONTO THE WEST COAST DURG PD.  SW FLOW DVLPS OVR CWA FOR MOST OF
THE WEEK WITH OCNL PIECES OF SHRTWV ENERGY EJECTING NE FROM
TROF.  BEST FORCING SHOULD REMAIN ALONG THE NRN TIER STATES
CLOSER TO WESTERLIES.  SFC HIGH SINKS OUT OF CANADA TUES AND
WEDS WHICH SHOULD BRING BEST CHC FOR PCPN TO CWA VIA UPSLOPE.
PATTERN SHOULD DRY OUT BY END OF WEEK AS UPPER HIGH SHIFTS
BACK WEST INTO NEW MEXICO FORCING ENERGY NORTH OF CWA.

.CYS...
WY...NONE.
NE...NONE.

JLH/RE

In the hours before

Local storm report, Jun 22, 3:32 PM MDT, 2 hours 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE, WY
332 PM MDT FRI JUN 22 2001

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0330 PM    1 N LANCE CREEK           WY   1.00 INCH HAIL
06/12/01   NIOBRARA

GRIFFITH

Local storm report, Jun 22, 3:40 PM MDT, 2 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE, WY
340 PM MDT FRI JUN 22 2001

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1110 PM    3 E ALLIANCE              NE   60 MPH TSTM WIND GUST
06/12/01   BOX BUTTE                      UNCONFIRMED TORNADO
                                          SEVERAL UPROOTED TREES
                                          WELL-HOUSE ROOF CARRIED
                                          AWAY STORAGE SHED
                                          DEMOLISHED

GRIFFITH

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.