Alert archive / Colorado / Tornado Warnings in 1993
Tornado Warning 29, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 21, 1993, 7:28 PM MDT for Washington County, Colorado. It was in force for 32 min.
The area
The counties it named.
The facts
- Issued
- Jul 21, 1993, 7:28 PM MDT (01:28 UTC)
- Expired
- Jul 21, 1993, 8:00 PM MDT
- In force
- 32 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Washington County, CO
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 1.5 hours before the alert went out and 11 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3132 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 81 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 220131
TORDEN
COC121-220200-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
728 PM MDT WED JUL 21 1993
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 800 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES
IN NORTHEASTERN COLORADO
SOUTH AND CENTRAL WASHINGTON
INCLUDING THE FOLLOWING LOCATIONS
ANTON...ARICKAREE SCHOOL...ELBA...LAST CHANCE...LINDON...
AND WOODLIN SCHOOL
AT 730 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
POSSIBLE TORNADO 5 MILES NORTHWEST OF ELBA...OR ABOUT 48 MILES SOUTH OF
STERLING. ANOTHER STORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED 5
MILES SOUTH OF LAST CHANCE.
AMATEUR RADIO WEATHER SPOTTERS REPORTED SEVERAL FUNNEL CLOUDS WITH THE
STORM NORTHWEST OF ELBA BETWEEN 720 AND 730 PM.
THE STORMS WERE MOVING EAST NORTHEAST AROUND 15 MILES AN HOUR.
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 DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH
YOUR HANDS.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
WOLF
LAT...LON 3988 10281 3961 10317 3957 10369 3995 10368
4001 10344 4030 10310What 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, Jul 21, 2:16 PM MDT, 5 hours 12 minutes before
COZ011-212130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 220 PM MDT WED JUL 21 1993 ...DOWNBURST TYPE WINDS TO OCCUR ALONG THE FRONT RANGE... A FEW THUNDERSTORMS ARE EXPECTED TO DEVELOP IN AND ALONG THE FRONT RANGE OF COLORADO THIS AFTERNOON. SINCE THE LOWER LEVELS OF THE ATMOSPHERE ARE RATHER DRY...LITTLE RAINFALL IS EXPECTED WITH THESE STORMS AS IT WILL EVAPORATE BEFORE REACHING THE GROUND. HOWEVER WHEN THE RAIN EVAPORATES...THE AIR MOVING DOWN IN ASSOCIATION WITH THE RAIN DOESN'T STOP SO IT CAUSES A WEATHER PHENEMENA THAT ARE CALLED DOWNBURSTS. THE MAIN THREAT FROM THE STORMS ALONG THE FRONT RANGE THIS AFTERNOON WILL BE THE STRONG DOWNBURST TYPE WINDS. WINDS COULD GUSTS AS HIGH AS 50 TO 60 MPH THROUGHOUT THE AFTERNOON WHEN CLOSE TO A THUNDERSTORM. IF YOU LIVE ALONG THE FRONT RANGE OR IN THE FOOTHILLS...BE AWARE OF THE POTENTIAL OF STRONG WINDS AND MOVE ANY LOOSE OUTDOOR OBJECTS INDOORS. CONTINUE TO MONITOR NOAA WEATHER RADIO...COMMERCIAL RADIO...AND/OR TELEVISION FOR FURTHER UPDATES ON THE DOWNBURST POTENTIAL. HEITKAMP
Special weather statement, Jul 21, 2:20 PM MDT, 5 hours 8 minutes before
COZ011-212130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 220 PM MDT WED JUL 21 1993 ...DOWNBURST TYPE WINDS TO OCCUR ALONG THE FRONT RANGE... A FEW THUNDERSTORMS ARE EXPECTED TO DEVELOP IN AND ALONG THE FRONT RANGE OF COLORADO THIS AFTERNOON. SINCE THE LOWER LEVELS OF THE ATMOSPHERE ARE RATHER DRY...LITTLE RAINFALL IS EXPECTED WITH THESE STORMS AS IT WILL EVAPORATE BEFORE REACHING THE GROUND. HOWEVER WHEN THE RAIN EVAPORATES...THE AIR MOVING DOWN IN ASSOCIATION WITH THE RAIN DOESN'T STOP SO IT CAUSES A WEATHER PHENEMENA THAT ARE CALLED DOWNBURSTS. THE MAIN THREAT FROM THE STORMS ALONG THE FRONT RANGE THIS AFTERNOON WILL BE THE STRONG DOWNBURST TYPE WINDS. WINDS COULD GUSTS AS HIGH AS 50 TO 60 MPH THROUGHOUT THE AFTERNOON WHEN CLOSE TO A THUNDERSTORM. IF YOU LIVE ALONG THE FRONT RANGE OR IN THE FOOTHILLS...BE AWARE OF THE POTENTIAL OF STRONG WINDS AND MOVE ANY LOOSE OUTDOOR OBJECTS INDOORS. CONTINUE TO MONITOR NOAA WEATHER RADIO...COMMERCIAL RADIO...AND/OR TELEVISION FOR FURTHER UPDATES ON THE DOWNBURST POTENTIAL. HEITKAMP
Special weather statement, Jul 21, 3:40 PM MDT, 3 hours 48 minutes before
COZ011-012-212215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 340 PM MDT WED JUL 21 1993 ...THUNDERSTORMS DEVELOPING ACROSS PORTIONS OF NORTHEAST COLORADO... AT 340 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED THUNDERSTORMS DEVELOPING ACROSS PORTIONS OF NORTHEAST COLORADO. THE STRONGEST STORM WAS LOCATED NEAR THE TOWN OF BYERS OR 30 MILES NORTHWEST OF LIMON. BRIEF HEAVY RAIN...FREQUENT LIGHTNING...AND SMALL HAIL ARE POSSIBLE WITH THIS STORM AND WITH THE OTHER STORMS ACROSS THE REMAINDER OF NORTHEAST COLORADO. CONTINUE TO MONITOR NOAA WEATHER RADIO...COMMERCIAL RADIO...AND/OR TELEVISION FOR FURTHER UPDATES ON THE WEATHER SITUATION ACROSS NORTHEAST COLORADO. HEITKAMP
Special weather statement, Jul 21, 3:40 PM MDT, 3 hours 48 minutes before
COZ011-012-212215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 340 PM MDT WED JUL 21 1993 ...THUNDERSTORMS DEVELOPING ACROSS PORTIONS OF NORTHEAST COLORADO... AT 340 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED THUNDERSTORMS DEVELOPING ACROSS PORTIONS OF NORTHEAST COLORADO. THE STRONGEST STORM WAS LOCATED NEAR THE TOWN OF BYERS OR 30 MILES NORTHWEST OF LIMON. BRIEF HEAVY RAIN...FREQUENT LIGHTNING...AND SMALL HAIL ARE POSSIBLE WITH THIS STORM AND WITH THE OTHER STORMS ACROSS THE REMAINDER OF NORTHEAST COLORADO. CONTINUE TO MONITOR NOAA WEATHER RADIO...COMMERCIAL RADIO...AND/OR TELEVISION FOR FURTHER UPDATES ON THE WEATHER SITUATION ACROSS NORTHEAST COLORADO. HEITKAMP
Special weather statement, Jul 21, 4:38 PM MDT, 2 hours 50 minutes before
COZ011-012-013-212330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 438 PM MDT WED JUL 21 1993 ...THUNDERSTORMS CONTINUING OVER NORTHEAST COLORADO... NATIONAL WEATHER SERVICE DOPPLER RADAR AT 429 PM INDICATED A LINE OF STRONG THUNDERSTORMS OVER WELD COUNTY FROM GROVER TO NEAR FORT LUPTON... INTO NORTH CENTRAL ADAMS COUNTY ABOUT 5 MILES EAST OF BRIGHTON. ANOTHER STRONG THUNDERSTORM WAS NOTED IN SOUTHWEST DOUGLAS COUNTY. THE STORMS ARE MOVING NORTHEAST AT 20 MILES AN HOUR. THESE STORMS ARE CAPABLE OF PRODUCING HAIL AND STRONG GUSTY WINDS. IF THREATENING WEATHER APPROACHES YOUR LOCATIONS...MOVE INDOORS TO A PLACE OF SAFETY. CONTINUE TO MONITOR NOAA WEATHER RADIO...COMMERCIAL RADIO...AND/OR TELEVISION FOR FURTHER UPDATES ON THE WEATHER SITUATION ACROSS NORTHEAST COLORADO. REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN COLORADO UNTIL 1100 PM MDT. WOLF
Special weather statement, Jul 21, 4:38 PM MDT, 2 hours 50 minutes before
COZ011-012-013-212330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 438 PM MDT WED JUL 21 1993 ...THUNDERSTORMS CONTINUING OVER NORTHEAST COLORADO... NATIONAL WEATHER SERVICE DOPPLER RADAR AT 429 PM INDICATED A LINE OF STRONG THUNDERSTORMS OVER WELD COUNTY FROM GROVER TO NEAR FORT LUPTON... INTO NORTH CENTRAL ADAMS COUNTY ABOUT 5 MILES EAST OF BRIGHTON. ANOTHER STRONG THUNDERSTORM WAS NOTED IN SOUTHWEST DOUGLAS COUNTY. THE STORMS ARE MOVING NORTHEAST AT 20 MILES AN HOUR. THESE STORMS ARE CAPABLE OF PRODUCING HAIL AND STRONG GUSTY WINDS. IF THREATENING WEATHER APPROACHES YOUR LOCATIONS...MOVE INDOORS TO A PLACE OF SAFETY. CONTINUE TO MONITOR NOAA WEATHER RADIO...COMMERCIAL RADIO...AND/OR TELEVISION FOR FURTHER UPDATES ON THE WEATHER SITUATION ACROSS NORTHEAST COLORADO. REMEMBER...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN COLORADO UNTIL 1100 PM MDT. WOLF
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:00 PM MDT | Tornado Warning | BOU | Washington | 30 min |
| Jul 21, 6:28 PM MDT | Tornado Warning | BOU | Washington | 32 min |
| Jul 21, 7:05 PM MDT | Tornado Warning | BOU | Washington | 25 min |
| Jul 21, 8:00 PM MDT | Tornado Warning | BOU | Washington | 30 min |
| Jul 21, 8:30 PM MDT | Tornado Warning | BOU | Washington | 30 min |
| Jul 21, 8:58 PM MDT | Tornado Warning | BOU | Washington | 32 min |
| Jul 21, 9:28 PM MDT | Tornado Warning | BOU | Washington, Yuma | 32 min |
| Jul 21, 9:59 PM MDT | Tornado Warning | BOU | Washington, Yuma | 31 min |
| Jul 21, 10:30 PM MDT | Tornado Warning | BOU | Yuma | 30 min |
| Jul 21, 11:27 PM MDT | Severe Thunderstorm Warning | BOU | Yuma | 38 min |
| Jul 21, 11:30 PM MDT | Tornado Warning | BOU | Yuma | |
| Jul 22, 5:15 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 30 min |
| Jul 22, 5:47 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Washington | 28 min |
Nearby
Tornado Warnings in Colorado, 1993Every tornado warning in 1993Tornadoes in 1993
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.