Alert archive / Colorado / Tornado Warnings in 1993
Tornado Warning 20, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 13, 1993, 12:47 PM MDT for Larimer County, Weld County, Colorado. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- Jul 13, 1993, 12:47 PM MDT (18:47 UTC)
- Expired
- Jul 13, 1993, 1:15 PM MDT
- In force
- 28 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
Counties Larimer County, CO, Weld County, CO
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 6.8 hours before the alert went out and 166 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
- 18 J/kg
- Mixed-layer CIN
- -324 J/kg
- Mixed-layer LCL
- 1771 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 131849
TORDEN
COC069-123-131915-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
1247 PM MDT TUE JUL 13 1993
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A TORNADO
WARNING EFFECTIVE UNTIL 115 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN NORTH CENTRAL COLORADO
NORTHEASTERN LARIMER
IN NORTHEASTERN COLORADO
NORTHWESTERN WELD
INCLUDING THE FOLLOWING LOCATIONS
CARR...NATURAL FORT REST AREA AND ROCKPORT
AT 1247 PM MDT...THE PUBLIC REPORTED 4 SMALL TORNADOES 5 MILES
NORTHWEST OF NUNN.
THESE TORNADOES WERE MOVING NORTHEAST 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 DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH
YOUR HANDS.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT
AGENCY REXLAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN DENVER.
DULONG
LAT...LON 4075 10461 4075 10511 4100 10512 4101 10461What 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 13, 11:38 AM MDT, 1 hour 9 minutes before
COZ002-004-011-012-013-140600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1140 AM MDT TUE JUL 13 1993 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS DENVER JACKSON LOGAN SEDGWICK YUMA ARAPAHOE DOUGLAS JEFFERSON MORGAN SUMMIT BOULDER GILPIN LARIMER PARK WASHINGTON CLEAR CREEK GRAND LAKE PHILLIPS WELD A COLD FRONT MOVED THROUGH EASTERN COLORADO LAST NIGHT...KEEPING THE ATMOSPHERE MOIST BUT ALSO IMPORTING COOLER AIR NEAR THE SURFACE. A DISTURBANCE WAS APPROACHING NORTHEAST COLORADO FROM THE WEST THIS MORNING. LOW LEVEL UPSLOPING NORTHEAST WINDS SHOULD HELP TO TRIGGER NUMEROUS THUNDERSTORMS OVER AND NEAR THE FOOTHILLS EARLY THIS AFTERNOON. THIS ACTIVITY SHOULD SPREAD EASTWARD ACROSS THE NORTHEAST PLAINS AND BORDER BY EARLY EVENING. THERE IS A REMOTE CHANCE THATd A FEW STORMS COULD BE SEVERE. HOWEVER...THE MAIN THREAT FROM STORMS TODAY WILL BE LOCALLY HEAVY RAIN AND SMALL HAIL. THERE IS A CHANCE THAT SPOTTERS WILL BE NEEDED THIS AFTERNOON OR EVENING. DULONG
Special weather statement, Jul 13, 11:40 AM MDT, 1 hour 7 minutes before
COZ002-004-011-012-013-140600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1140 AM MDT TUE JUL 13 1993 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS DENVER JACKSON LOGAN SEDGWICK YUMA ARAPAHOE DOUGLAS JEFFERSON MORGAN SUMMIT BOULDER GILPIN LARIMER PARK WASHINGTON CLEAR CREEK GRAND LAKE PHILLIPS WELD A COLD FRONT MOVED THROUGH EASTERN COLORADO LAST NIGHT...KEEPING THE ATMOSPHERE MOIST BUT ALSO IMPORTING COOLER AIR NEAR THE SURFACE. A DISTURBANCE WAS APPROACHING NORTHEAST COLORADO FROM THE WEST THIS MORNING. LOW LEVEL UPSLOPING NORTHEAST WINDS SHOULD HELP TO TRIGGER NUMEROUS THUNDERSTORMS OVER AND NEAR THE FOOTHILLS EARLY THIS AFTERNOON. THIS ACTIVITY SHOULD SPREAD EASTWARD ACROSS THE NORTHEAST PLAINS AND BORDER BY EARLY EVENING. THERE IS A REMOTE CHANCE THAT A FEW STORMS COULD BE SEVERE. HOWEVER...THE MAIN THREAT FROM STORMS TODAY WILL BE LOCALLY HEAVY RAIN AND SMALL HAIL. THERE IS A CHANCE THAT SPOTTERS WILL BE NEEDED THIS AFTERNOON OR EVENING. DULONG
Special weather statement, Jul 13, 12:30 PM MDT, 17 minutes before
COZ002-011-131900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1230 PM MDT TUE JUL 13 1993 ...STRONG THUNDERSTORM WITH SMALL HAIL IN LARIMER COUNTY... AT 1230 PM...DOPPLER RADAR SHOWED A STRONG THUNDERSTORMS WITH SMALL HAIL FROM 5 MILES NORTHEAST OF FORT COLLINS TO NEAR RUSTIC IN LARIMER COUNTY. AT 1222 PM...PEA SIZE HAIL WAS REPORTED AT THE TOWN OF LAPORTE. THIS ACTIVITY IS MOVING NORTHEAST AT 20 MPH AND WILL BE AFFECTING WELLINGTON...FORT COLLINS AND AULT FROM NOW THROUGH 1 PM. DULONG
Special weather statement, Jul 13, 12:33 PM MDT, 14 minutes before
COZ002-011-131900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1230 PM MDT TUE JUL 13 1993 ...STRONG THUNDERSTORM WITH SMALL HAIL IN LARIMER COUNTY... AT 1230 PM...DOPPLER RADAR SHOWED A STRONG THUNDERSTORMS WITH SMALL HAIL FROM 5 MILES NORTHEAST OF FORT COLLINS TO NEAR RUSTIC IN LARIMER COUNTY. AT 1222 PM...PEA SIZE HAIL WAS REPORTED AT THE TOWN OF LAPORTE. THIS ACTIVITY IS MOVING NORTHEAST AT 20 MPH AND WILL BE AFFECTING * WELLINGTON...FORT COLLINS AND AULT FROM NOW THROUGH 1 PM. DULONG
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 4:27 PM MDT | Severe Thunderstorm Warning | BOU | Boulder | 33 min |
| Jul 13, 5:39 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 36 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.