Alert archive / Colorado / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 115, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 8, 1994, 7:07 PM MDT for Arapahoe County, Washington County, Colorado. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Aug 8, 1994, 7:07 PM MDT (01:07 UTC)
- Expired
- Aug 8, 1994, 7:45 PM MDT
- In force
- 38 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Arapahoe County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 66 km from the middle of the area, began a volume at 01:09 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, 1.1 hours before the alert went out and 47 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
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, Aug 8, 3:40 PM MDT, 3 hours 27 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 27 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 20 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 25 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 23 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 21 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, 6:50 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 40 min |
| Aug 8, 7:00 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Weld | 40 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.