Alert archive / Colorado / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 113, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 8, 1994, 6:50 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Aug 8, 1994, 6:50 PM MDT (00:50 UTC)
- Expired
- Aug 8, 1994, 7:30 PM MDT
- In force
- 40 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Adams County, CO, Arapahoe County, CO
The radar
The Denver radar (KFTG), 18 km from the middle of the area, began a volume at 00:52 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 (KDEN), launched 00:00Z, 0.8 hours before the alert went out and 95 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
- 716 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 2004 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 53 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 090051 RRA
SVRDEN
COC001-005-090130-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
650 PM MDT MON AUG 08 1994
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM MDT FOR PEOPLE IN
THE FOLLOWING COUNTY
IN NORTHEASTERN COLORADO
EASTERN ADAMS
INCLUDING THE FOLLOWING LOCATIONS
SHAMROCK
AT 649 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM WITH LARGE HAIL 11 MILES SOUTHWEST OF SHAMROCK
...OR ABOUT 37 MILES NORTH OF LIMON.
THIS STRENGTHENING STORM WAS MOVING NORTHEAST AT 20 MPH.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY
SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING
HAIL...DAMAGING WINDS OVER 60 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
BAKER
LAT...LON 3975 10376 3974 10398 3990 10401 4001 10374What 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, Aug 8, 3:40 PM MDT, 3 hours 10 minutes before
COZ039-040-082240- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 340 PM MDT MON AUG 08 1994 AT 335 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM SOUTHWEST GILPIN COUNTY TO SOUTH CENTRAL JEFFERSON COUNTY...OR 22 MILES SOUTHWEST OF DENVER. THESE STORMS HAVE SHOWN IN INCREASE IN INTENSITY DRING THE PAST 10 MINUTES. MOVEMENT OF THESE STORMS WAS TO THE NORTHEAST AT 20 MPH. THESE STORMS MAY PRODUCE BRIEF HEAVY RAIN...SMALL HAIL AND STRONG GUSTY WINDS AS THEY PAST OVER WESTERN PORTIONS OF THE DENVER METRO AREA BETWEEN 345 AND 430 PM MDT. SOME STREET FLOODING WILL BE POSSIBLE... ALONG WITH FLOODING OF DITCHES AND UNDERPASSES. DRIVERS SHOULD AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. BAKER
Special weather statement, Aug 8, 4:40 PM MDT, 2 hours 10 minutes before
COZ039-040-043-082315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 440 PM MDT MON AUG 08 1994 AT 432 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM EASTERN BOULDER COUNTY 5 MILES EAST NORTHEAST OF BOULDER...TO 8 MILES EAST OF DOWNTOWN DENVER. THIS LINE WAS MOVING NORTHEAST AT 15 MPH...AND WILL MOVE THROUGH ERIE...FORT LUPTON AND BRIGHTON BY 510PM. THE STORMS HAVE DROPPED SMALL HAIL AND VERY HEAVY RAIN. LOCAL RAIN AMOUNTS OF ONE INCH ARE POSSIBLE...ALONG WITH WIND GUSTS TO 50 MPH. STREET FLOODING WILL CAUSE SOME TRAVEL PROBLEMS FOR COMMUTERS. ANYONE IN THE PATH OF THESE STORMS SHOULD TAKE COVER IN A SAFE BUILDING UNTIL STORMS PASS. RTG
Special weather statement, Aug 8, 4:47 PM MDT, 2 hours 3 minutes before
COZ039-040-043-082315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 440 PM MDT MON AUG 08 1994 AT 432 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM EASTERN BOULDER COUNTY 5 MILES EAST NORTHEAST OF BOULDER...TO 8 MILES EAST OF DOWNTOWN DENVER. THIS LINE WAS MOVING NORTHEAST AT 15 MPH...AND WILL MOVE THROUGH ERIE...FORT LUPTON AND BRIGHTON BY 510PM. THE STORMS HAVE DROPPED SMALL HAIL AND VERY HEAVY RAIN. LOCAL RAIN AMOUNTS OF ONE INCH ARE POSSIBLE...ALONG WITH WIND GUSTS TO 50 MPH. STREET FLOODING WILL CAUSE SOME TRAVEL PROBLEMS FOR COMMUTERS. ANYONE IN THE PATH OF THESE STORMS SHOULD TAKE COVER IN A SAFE BUILDING UNTIL STORMS PASS. RTG
Special weather statement, Aug 8, 5:42 PM MDT, 1 hour 8 minutes before
COZ044-090005- SPECIAL WEATHER STATEMENT...COR TO TIME IN 1ST PARAGRAPH... NATIONAL WEATHER SERVICE DENVER CO 542 PM MDT MON AUG 08 1994 AT 540 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF VERY STRONG WINDS RADIATING OUTWARD FROM STRONG THUNDERSTORMS OVER SOUTHEAST WELD AND WESTERN MORGAN COUNTIES. THE LEADING EDGE OF THESE WINDS WAS LOCATED JUST WEST OF FORT MORGAN AS OF 538 PM. WIND GUSTS OF 35 TO 50 MILES AN HOUR ARE EXPECTED IN THE FORT MORGAN AREA BETWEEN 545 AND 550 PM MDT. PERSONS IN THE PATH OF THESE WINDS SHOULD IMMEDIATELY MOVE TO A PLACE OF SAFETY. BLOW DUST AND DEBRIS MAY SEVERELY REDUCE VISIBILITIES AND MAY CAUSE DAMAGE TO SMALL OBJECTS AND STRUCTURES NOT SECURELY TIED DOWN. BAKER
Special weather statement, Aug 8, 5:44 PM MDT, 1 hour 6 minutes before
COZ044-090005- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 542 PM MDT MON AUG 08 1994 AT 540 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF VERY STRONG WINDS RADIATING OUTWARD FROM STRONG THUNDERSTORMS OVER SOUTHEAST WELD AND WESTERN MORGAN COUNTIES. THE LEADING EDGE OF THESE WINDS WAS LOCATED JUST WEST OF FORT MORGAN AS OF 440 PM. WIND GUSTS OF 35 TO 50 MILES AN HOUR ARE EXPECTED IN THE FORT MORGAN AREA BETWEEN 545 AND 550 PM MDT. PERSONS IN THE PATH OF THESE WINDS SHOULD IMMEDIATELY MOVE TO A PLACE OF SAFETY. BLOW DUST AND DEBRIS MAY SEVERELY REDUCE VISIBILITIES AND MAY CAUSE DAMAGE TO SMALL OBJECTS AND STRUCTURES NOT SECURELY TIED DOWN. BAKER
Special weather statement, Aug 8, 5:46 PM MDT, 1 hour 4 minutes before
COZ044-090005- SPECIAL WEATHER STATEMENT...COR TO TIME IN 1ST PARAGRAPH... NATIONAL WEATHER SERVICE DENVER CO 542 PM MDT MON AUG 08 1994 AT 540 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF VERY STRONG WINDS RADIATING OUTWARD FROM STRONG THUNDERSTORMS OVER SOUTHEAST WELD AND WESTERN MORGAN COUNTIES. THE LEADING EDGE OF THESE WINDS WAS LOCATED JUST WEST OF FORT MORGAN AS OF 538 PM. WIND GUSTS OF 35 TO 50 MILES AN HOUR ARE EXPECTED IN THE FORT MORGAN AREA BETWEEN 545 AND 550 PM MDT. PERSONS IN THE PATH OF THESE WINDS SHOULD IMMEDIATELY MOVE TO A PLACE OF SAFETY. BLOW DUST AND DEBRIS MAY SEVERELY REDUCE VISIBILITIES AND MAY CAUSE DAMAGE TO SMALL OBJECTS AND STRUCTURES NOT SECURELY TIED DOWN. BAKER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 7:00 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 40 min |
| Aug 8, 7:07 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Washington | 38 min |
| Aug 8, 7:17 PM MDT | Tornado Warning | BOU | Arapahoe, Washington | 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; radar from the NEXRAD Level II archive.