Alert archive / Colorado / Tornado Warnings in 2003

Tornado Warning 23, NWS Denver/Boulder, CO

May 30, 2003Morgan County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at May 30, 2003, 7:38 PM MDT for Morgan County, Colorado. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 30, 2003, 7:38 PM MDT (01:38 UTC)
Expired: May 30, 2003, 8:15 PM MDT
In force: 37 min
Issued by: NWS Denver/Boulder, CO
Area: Counties, with a storm outline in the text

County Morgan County, CO

The radar

The Denver radar (KFTG), 92 km from the middle of the area, began a volume at 01:42 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 30, 4:05 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.6 hours before the alert went out and 59 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 27 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 2925 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 27 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 310138 CCA
TORBOU
COC087-310215-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTION
NATIONAL WEATHER SERVICE DENVER CO
731 PM MDT FRI MAY 30 2003

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL MORGAN COUNTY IN NORTHEAST COLORADO
  THIS INCLUDES THE CITY OF FORT MORGAN

* UNTIL 815 PM MDT

* AT 725 PM MDT...THE PUBLIC REPORTED A TORNADO JUST SOUTH OF FORT 
MORGAN...MOVING NORTHEAST AT 15 MPH.

LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED 
TO...BRUSH...FORT MORGAN...HILLROSE AND SNYDER.  PEOPLE IN FORT 
MORGAN SHOULD TAKE COVER IMMEDIATELY.

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 4027 10380 4017 10380 4020 10348 4040 10347
          4035 10369

$$

BARJENBRUCH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 6:21 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	54 min
May 30, 6:48 PM MDT	Severe Thunderstorm Warning	BOU	Adams	42 min
May 30, 7:11 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Washington	64 min
May 30, 7:32 PM MDT	Tornado Warning	BOU	Morgan	43 min

Nearby

Tornado Warnings in Colorado, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.