Alert archive / Colorado / Tornado Warnings in 2001

Tornado Warning 39, NWS Denver/Boulder, CO

July 9, 2001Morgan County, Washington County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jul 9, 2001, 8:46 PM MDT for Morgan County, Washington County, Colorado. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 9, 2001, 8:46 PM MDT (02:46 UTC)
Expired
Jul 9, 2001, 9:15 PM MDT
In force
29 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Morgan County, CO, Washington County, CO

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 9, 5:45 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.8 hours before the alert went out and 24 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2001-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 323 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2001-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
323 J/kg
Mixed-layer CIN
-157 J/kg
Mixed-layer LCL
2587 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS55 KBOU 100248
TORDEN

COC087-121-100315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
846 PM MDT MON JUL 9 2001

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN MORGAN COUNTY IN NORTHEAST COLORADO
  CENTRAL WASHINGTON COUNTY IN NORTHEAST COLORADO
  THIS INCLUDES THE CITY OF AKRON

* UNTIL 915 PM MDT

* AT 846 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO 4 MILES NORTHEAST OF
  WOODROW...OR ABOUT 20 MILES SOUTHWEST OF AKRON...MOVING NORTHEAST
  AT 15 MPH.

LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED 
TO...AKRON...ELBA...GARY...WOODLIN SCHOOL AND WOODROW. THIS STORM 
HAS HAD A HISTORY OF TORNADOS ACROSS SOUTHEAST MORGAN COUNTY. LARGE 
HAIL AND HEAVY RAIN CAN ALSO BE EXPECTED. 

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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.


LAT...LON 4007 10364 3975 10365 3988 10311 4029 10318

SWE

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 9, 6:27 PM MDTFlash Flood WarningBOUArapahoe2 hr
Jul 9, 6:36 PM MDTSevere Thunderstorm WarningBOUMorgan39 min
Jul 9, 8:00 PM MDTSevere Thunderstorm WarningBOUMorgan45 min
Jul 9, 8:17 PM MDTTornado WarningBOUMorgan43 min
Jul 9, 8:39 PM MDTSevere Thunderstorm WarningBOUWeld51 min
Jul 9, 9:39 PM MDTFlash Flood WarningBOUMorgan2 hr
Jul 10, 4:03 AM MDTSevere Thunderstorm WarningBOUPhillips27 min
Jul 10, 4:46 PM MDTSevere Thunderstorm WarningBOUClear Creek29 min
Jul 10, 5:46 PM MDTFlash Flood WarningBOUClear Creek119 min

Nearby

Tornado Warnings in Colorado, 2001Every tornado warning in 2001Tornadoes in 2001

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.