Alert archive / Wyoming / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 86, NWS Cheyenne, WY

July 15, 1994Laramie County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 15, 1994, 4:25 PM MDT for Laramie County, Wyoming. It was in force for 35 min.

The area

The counties it named.

The facts

Issued: Jul 15, 1994, 4:25 PM MDT (22:25 UTC)
Expired: Jul 15, 1994, 5:00 PM MDT
In force: 35 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

County Laramie County, WY

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 10.4 hours before the alert went out and 202 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: 73 J/kg
Mixed-layer CIN: -390 J/kg
Mixed-layer LCL: 2544 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 159 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.

In the hours before

Special weather statement, Jul 15, 1:51 PM MDT, 2 hours 34 minutes before

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Special weather statement, Jul 15, 2:21 PM MDT, 2 hours 4 minutes before

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Special weather statement, Jul 15, 3:45 PM MDT, 40 minutes before

WYZ069-070-152245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
345 PM MDT FRI JUL 15 1994

...ANOTHER STORM HAS BEEN BUILDING NEAR HORSE CREEK...

PEA TO MARBLE SIZED HAIL WAS REPORTED AT HORSE CREEK AT 335 PM MDT.
HORSE CREEK IS 27 MILES NORTHWEST OF CHEYENNE. THE LEADING EDGE OF THE
STORM WAS JUST ON THE NORTHWEST SIDE OF CHEYENNE. A HAM RADIO OPERATOR
WHO WAS STORM SPOTTING REPORTS WINDS IN EXCESS OF 35 MILES AN HOUR.
THE MAIN STORM WAS NORTH OF THIS LOCATION AND WAS MOVING EAST AT
25 MILES AN HOUR. IT WILL CROSS INTERSTATE 25 NEAR THE LITTLE BEAR EXIT
BY 410 PM.

THIS STORM WILL PRODUCE MARBLE SIZED HAIL AND WINDS OF 40 TO 45 MILES AN
HOUR BETWEEN NOW AND 415 PM2.

WCJIN-WYSE
CAS

&

Special weather statement, Jul 15, 4:04 PM MDT, 21 minutes before

NEZ001>004-019>022-054>056-152300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
404 PM MDT FRI JUL 15 1994

...TORNADO WATCH FOR THE NEBRASKA PANHANDLE...

A TORNADO WATCH IS IN EFFECT FOR THE ENTIRE NEBRASKA PANHANDLE UNTIL
9 PM MDT.  ALTHOUGH ONLY LIGHT TO MODERATE SHOWER ACTIVITY WAS THE ONLY
INDICATIONS ON RADAR...SEVERE WEATHER DEVELOPMENT COULD OCCUR RAPIDLY.

RESIDENTS OF THE NEBRASKA PANHANDLE SHOULD KEEP AN EYE TO THE SKY INTO
THE EVENING.
KYLE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 2:15 AM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff	45 min
Jul 15, 2:42 AM MDT	Severe Thunderstorm Warning	CYS	Morrill, Scotts Bluff	48 min
Jul 15, 3:33 AM MDT	Severe Thunderstorm Warning	CYS	Morrill	42 min
Jul 15, 2:37 AM MDT	Flash Flood Warning	CYS	Goshen	2 hr
Jul 15, 2:32 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	43 min
Jul 15, 2:48 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	42 min
Jul 15, 3:05 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	40 min
Jul 15, 3:38 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	52 min
Jul 15, 5:04 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	41 min
Jul 15, 5:45 PM MDT	Tornado Warning	CYS	Goshen	30 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 1994 Every severe thunderstorm warning in 1994

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.