Alert archive / Colorado / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 71, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 11, 1994, 7:40 PM MDT for Logan County, Colorado. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1994, 7:40 PM MDT (01:40 UTC)
- Expired
- Jul 11, 1994, 8:21 PM MDT
- In force
- 41 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Logan County, CO
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 1.7 hours before the alert went out and 96 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.
- Mixed-layer CAPE
- 156 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 2835 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS1 KDEN 120141
SVRBOU
COC075-120230-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
740 PM MDT MON JUL 11 1994
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTIES
IN NORTHEASTERN COLORADO
WESTERN LOGAN
INCLUDING THE FOLLOWING LOCATIONS
LOGAN CORNERS AND PAWNEE PASS
AT 739 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM 7 MILES NORTH OF PAWNEE PASS...OR ABOUT 17 MILES WEST OF
STERLING. THIS STORM LIKELY CONTAINS HAIL UP TO 1 INCH IN DIAMETER AND
WINDS IN EXCESS OF 60 MPH. THIS STORM IS MOVING EAST-SOUTHEAST AT 20
MPH.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY
SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS.
LAT...LON 4051 10330 4058 10356 4084 10354 4079 10330
IMYWhat 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 11, 6:14 PM MDT, 1 hour 26 minutes before
COZ035-038-120045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 614 PM MDT MON JUL 11 1994 AT 614 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 2 MILES EAST OF GLEN HAVEN ...OR ABOUT 19 MILES SOUTHWEST OF FORT COLLINS THAT WAS PRODUCING AN UNSUALLY HIGH AMOUNT OF CLOUD-TO-GROUND LIGHTNING STROKES. THIS STORM IS MOVING NORTHEAST AT 25 MPH TOWARD FT COLLINS. PERSONS NEAR OR IN THE PATH OF THIS STORM SHOULD INSIDE UNTIL IT PASSES. THE TOWNS THAT WILL BE INFLUENCED BY THIS STORM INCLUDE: BELLVUE...DRAKE...GLEN HAVEN AND MASONVILLE. LAT...LON 4038 10516 4041 10551 4064 10516
Special weather statement, Jul 11, 6:16 PM MDT, 1 hour 24 minutes before
COZ035-038-120045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 614 PM MDT MON JUL 11 1994 AT 614 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 2 MILES EAST OF GLEN HAVEN ...OR ABOUT 19 MILES SOUTHWEST OF FORT COLLINS THAT WAS PRODUCING AN UNSUALLY HIGH AMOUNT OF CLOUD-TO-GROUND LIGHTNING STROKES. THIS STORM IS MOVING NORTHEAST AT 25 MPH TOWARD FT COLLINS. PERSONS NEAR OR IN THE PATH OF THIS STORM SHOULD, INSIDE UNTIL IT PASSES. THE TOWNS THAT WILL BE INFLUENCED BY THIS STORM INCLUDE: BELLVUE...DRAKE...GLEN HAVEN AND MASONVILLE. LAT...LON 4038 10516 4041 10551 4064 10516
Special weather statement, Jul 11, 6:23 PM MDT, 1 hour 17 minutes before
COZ040-120045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 625 PM MDT MON JUL 11 1994 AT 622 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM OVER THE HIGHER FOOTHILLS OF WESTERN JEFFERSON COUNTY. EVEN THOUGH THIS STORM IS PRODUCING LITTLE RAIN...IT IS SPREADING WEST WINDS FROM 20 TO 40 MPH ACROSS THE DENVER AND SURROUNDING AREA. THESE WINDS WILL CONTINUE UNTIL ABOUT 700 PM...THEN GRADUALLY DIMINISH. IM<Y
Special weather statement, Jul 11, 6:25 PM MDT, 1 hour 15 minutes before
COZ040-120045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 625 PM MDT MON JUL 11 1994 AT 622 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM OVER THE HIGHER FOOTHILLS OF WESTERN JEFFERSON COUNTY. EVEN THOUGH THIS STORM IS PRODUCING LITTLE RAIN...IT IS SPREADING WEST WINDS FROM 20 TO 40 MPH ACROSS THE DENVER AND SURROUNDING AREA. THESE WINDS WILL CONTINUE UNTIL ABOUT 700 PM...THEN GRADUALLY DIMINISH. IMY
Special weather statement, Jul 11, 7:25 PM MDT, 15 minutes before
COZ042-048-120200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 725 PM MDT MON JUL 11 1994 AT 723 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 23 MILES WEST OF STERLING IN EXTREME NORTHEAST WELD COUNTY. THIS STORM MAY PRODUCE PEA TO MARBLE SIDE HAIL AND BRIEFLY HEAVY RAINS AS IT MOVE EAST AT 20 MPH INTO EXTREME WESTERN LOGAN COUNTY BETWEEN 730 AND 745 PM. LAT...LON 4062 10350 4062 10379 4084 10379 4084 10350 IMY
Special weather statement, Jul 11, 7:25 PM MDT, 15 minutes before
COZ042-048-120200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 725 PM MDT MON JUL 11 1994 AT 723 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 23 MILES WEST OF STERLING IN EXTREME NORTHEAST WELD COUNTY. THIS STORM MAY PRODUCE PEA TO MARBLE SIDE HAIL AND BRIEFLY HEAVY RAINS AS IT MOVE EAST AT 20 MPH INTO EXTREME WESTERN LOGAN COUNTY BETWEEN 730 AND 745 PM. LAT...LON 4062 10350 4062 10379 4084 10379 4084 10350 IMY
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 6:07 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 53 min |
| Jul 11, 8:07 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 53 min |
| Jul 11, 8:38 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 52 min |
| Jul 11, 9:17 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 28 min |
| Jul 11, 9:50 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 25 min |
| Jul 12, 5:32 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 28 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1994Every 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.