Alert archive / Colorado / Tornado Warnings in 1994
Tornado Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 18, 1994, 2:44 PM MDT for Weld County, Colorado. It was in force for 26 min.
The area
The counties it named.
The facts
- Issued
- Jun 18, 1994, 2:44 PM MDT (20:44 UTC)
- Expired
- Jun 18, 1994, 3:10 PM MDT
- In force
- 26 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Weld County, CO
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 8.7 hours before the alert went out and 125 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
- 1621 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 988 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 182046
TORDEN
COC123-182115-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
244 PM MDT SAT JUN 18 1994
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A TORNADO
WARNING EFFECTIVE UNTIL 315 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN NORTHEASTERN COLORADO
SOUTHWESTERN WELD
INCLUDING THE FOLLOWING LOCATIONS
DACONO...FIRESTONE...FORT LUPTON AND FREDERICK
AT 244 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A POSSIBLE TORNADO OVER FORT LUPTON ...OR ABOUT 24 MILES SOUTH
OF GREELEY.
AMATEUR RADIO WEATHER SPOTTERS REPORTED A TORNADO 3 MILES SOUTH
SOUTHWEST OF PLATTEVILLE...OR ABOUT 8 MILES SOUTHEAST OF LONGMONT.
THE STORM WAS MOVING NORTH AT 15 MPH.
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET
UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO
BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY
FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN
THE NEAREST DITCRH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH
YOUR HANDS.
LAT...LON 4003 10467 4003 10493 4016 10493 4019 10470What forecasters said that day
The local office's own words before this tornado 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, Jun 18, 12:17 PM MDT, 2 hours 27 minutes before
COZ038>050-091-092-181900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1220 PM MDT SAT JUN 18 1994 ...THUNDERSTORMS BUILDING RAPIDLY OVER THE FRONT RANGE FOOTHILLS... AT 1215 PM MDT...SCATTERED THUNDERSTORMS WERE BUILDING RAPIDLY FROM WESTERN JEFFERSON COUNTY NORTHWARD THROUGH WESTERN BOULDER COUNTY INTO WESTERN LARIMER COUNTY. THESE STORMS SHOWED LITTLE MOVEMENT. SCATTERED THUNDERSTORMS SHOULD DEVELOP EASTWARD OVER MUCH OF THE NORTHEAST PLAINS BY 3 PM. THERE WILL BE GOOD POTENTIAL FOR SEVERE STORMS THIS AFTERNOON AND EVENING. THE MAIN THREAT WILL BE LARGE HAIL AND HEAVY RAINFALL. BE READY FOR THREATENING WEATHER...ESPECIALLY IF YOU PLAN TO BE OUTDOORS. STORMS WILL POP UP QUICKLY. HEAVY RAINFALL COULD RESULT IN LOCALIZED FLOODING. KEEP TUNED TO NOAA WEATHER FOR POSSIBLE WATCHES...WARNINGS...OR OTHER WEATHER STATEMENTS. DULONG
Special weather statement, Jun 18, 12:20 PM MDT, 2 hours 24 minutes before
COZ038>050-091-092-181900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1220 PM MDT SAT JUN 18 1994 ...THUNDERSTORMS BUILDING RAPIDLY OVER THE FRONT RANGE FOOTHILLS... AT 1215 PM MDT...SCATTERED THUNDERSTORMS WERE BUILDING RAPIDLY FROM WESTERN JEFFERSON COUNTY NORTHWARD THROUGH WESTERN BOULDER COUNTY INTO WESTERN LARIMER COUNTY. THESE STORMS SHOWED LITTLE MOVEMENT. SCATTERED THUNDERSTORMS SHOULD DEVELOP EASTWARD OVER MUCH OF THE NORTHEAST PLAINS BY 3 PM. THERE WILL BE GOOD POTENTIAL FOR SEVERE STORMS THIS AFTERNOON AND EVENING. THE MAIN THREAT WILL BE LARGE HAIL AND HEAVY RAINFALL. BE READY FOR THREATENING WEATHER...ESPECIALLY IF YOU PLAN TO BE OUTDOORS. STORMS WILL POP UP QUICKLY. HEAVY RAINFALL COULD RESULT IN LOCALIZED FLOODING. KEEP TUNED TO NOAA WEATHER FOR POSSIBLE WATCHES...WARNINGS...OR OTHER WEATHER STATEMENTS. DULONG
Special weather statement, Jun 18, 12:50 PM MDT, 1 hour 54 minutes before
COZ040>041-045-181930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1250 PM MDT SAT JUN 18 1994 ...STRONG THUNDERSTORM WITH HAIL IN DOUGLAS COUNTY... ...TORNADO WATCH IN EFFECT FOR URBAN CORRIDOR AND ADJACENT PLAINS UNTIL 700 PM MDT THIS EVENING... AT 1240 PM MDT...PEA TO MARBLE SIZE HAIL WAS OCCURRING IN THE CITY OF CASTLE ROCK. DOPPLER RADAR SHOWED THIS STORM MOVING VERY SLOWLY TOWARDS THE NORTH. OTHER STORMS WERE RAPIDLY DEVELOPING NORTHEASTWARD ALONG A BOUNDARY FROM NEAR PARKER AND FRANKTOWN TO THE BENNETT AREA. THESE STORMS SHOULD SPREAD TOWARDS METRO DENVER BY 2 PM. TAKE COVER IF THREATENING WEATHER APPROACHES...AND MONITOR NOAA WEATHER RADIO FOR POSSIBLE WARNINGS. DULONG WWUS35KSDF .D
Special weather statement, Jun 18, 12:52 PM MDT, 1 hour 52 minutes before
COZ040>041-045-181930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1250 PM MDT SAT JUN 18 1994 ...STRONG THUNDERSTORM WITH HAIL IN DOUGLAS COUNTY... ...TORNADO WATCH IN EFFECT FOR URBAN CORRIDOR AND ADJACENT PLAINS UNTIL 700 PM MDT THIS EVENING... AT 1240 PM MDT...PEA TO MARBLE SIZE HAIL WAS OCCURRING IN THE CITY OF CASTLE ROCK. DOPPLER RADAR SHOWED THIS STORM MOVING VERY SLOWLY TOWARDS THE NORTH. OTHER STORMS WERE RAPIDLY DEVELOPING NORTHEASTWARD ALONG A BOUNDARY FROM NEAR PARKER AND FRANKTOWN TO THE BENNETT AREA. THESE STORMS SHOULD SPREAD TOWARDS METRO DENVER BY 2 PM. TAKE COVER IF THREATENING WEATHER APPROACHES...AND MONITOR NOAA WEATHER RADIO FOR POSSIBLE HWARNINGS. DULONG
Special weather statement, Jun 18, 1:54 PM MDT, 50 minutes before
COZ040>041-045-181930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 155 PM MDT SAT JUN 18 1994 ...STRONG THUNDERSTORMS TO MOVE INTO DENVER... AT 152 PM MDT...NUMEROUS THUNDERSTORMS WERE LOCATED EAST AND SOUTH OF THE DENVER AREA. THESE THUNDERSTORMS WILL BE MOVING SLOWLY WESTWARD AND PERSONS IN AND NEAR THE DENVER METROPOLITAN AREA CAN EXPECT THUNDERSTORMS WITH FREQUENT LIGHTNING...HEAVY RAINS AND HAIL BETWEEN 200 AND 400 PM. THESES STORMS COULD DROP FROM 1 TO 2 INCHES OF RAIN IN A 30 MINUTE PERIOD OF TIME AND CAUSE LOCALIZED STREET FLOODING. THE POSSIBILITY ALSO EXISTS THAT SOME OF THE STORMS COULD PRODUCE LARGE HAIL. A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 P|M MDT.
Special weather statement, Jun 18, 1:55 PM MDT, 49 minutes before
COZ040>041-045-181930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 155 PM MDT SAT JUN 18 1994 ...STRONG THUNDERSTORMS TO MOVE INTO DENVER... AT 152 PM MDT...NUMEROUS THUNDERSTORMS WERE LOCATED EAST AND SOUTH OF THE DENVER AREA. THESE THUNDERSTORMS WILL BE MOVING SLOWLY WESTWARD AND PERSONS IN AND NEAR THE DENVER METROPOLITAN AREA CAN EXPECT THUNDERSTORMS WITH FREQUENT LIGHTNING...HEAVY RAINS AND HAIL BETWEEN 200 AND 400 PM. THESES STORMS COULD DROP FROM 1 TO 2 INCHES OF RAIN IN A 30 MINUTE PERIOD OF TIME AND CAUSE LOCALIZED STREET FLOODING. THE POSSIBILITY ALSO EXISTS THAT SOME OF THE STORMS COULD PRODUCE LARGE HAIL. A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM MDT.
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 12:59 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 31 min |
| Jun 18, 1:10 PM MDT | Tornado Warning | BOU | Douglas | 20 min |
| Jun 18, 1:52 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 53 min |
| Jun 18, 2:05 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 40 min |
| Jun 18, 2:32 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 43 min |
| Jun 18, 2:45 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 45 min |
| Jun 18, 2:51 PM MDT | Severe Thunderstorm Warning | BOU | Denver, Jefferson | 24 min |
| Jun 18, 3:10 PM MDT | Severe Thunderstorm Warning | BOU | Denver, Jefferson | 35 min |
| Jun 18, 3:24 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 36 min |
| Jun 18, 3:36 PM MDT | Severe Thunderstorm Warning | BOU | Boulder | 24 min |
| Jun 18, 4:00 PM MDT | Severe Thunderstorm Warning | BOU | Boulder | 30 min |
| Jun 18, 4:29 PM MDT | Severe Thunderstorm Warning | BOU | Boulder | 31 min |
| Jun 18, 5:00 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 30 min |
Nearby
Tornado Warnings in Colorado, 1994Every tornado warning in 1994Tornadoes 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.