Alert archive / Iowa / Tornado Warnings in 2004

Tornado Warning 86, NWS Des Moines, IA

June 16, 2004Calhoun County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 16, 2004, 1:01 PM CDT for Calhoun County, Iowa. It was in force for 44 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: Jun 16, 2004, 1:01 PM CDT (18:01 UTC)
Expired: Jun 16, 2004, 1:45 PM CDT
In force: 44 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Calhoun County, IA

The radar

The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 18:01 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 nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.0 hours before the alert went out and 180 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: 338 J/kg
Mixed-layer CIN: -410 J/kg
Mixed-layer LCL: 1794 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 71 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.

887 
WFUS53 KDMX 161801
TORDMX
IAC025-161845-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
100 PM CDT WED JUN 16 2004

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  CALHOUN COUNTY IN WEST CENTRAL IOWA

* UNTIL 145 PM CDT

* AT 1256 PM...RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING   
  A TORNADO JUST NORTH OF LAKE CITY...OR ABOUT 32 MILES SOUTHWEST OF 
  FORT DODGE...MOVING NORTHEAST AT 15 MPH.

* THE STORM WILL BE...

  5 MILES SOUTHEAST OF ROCKWELL CITY AROUND 125 PM AND
  4 MILES SOUTHEAST OF ROCKWELL CITY MUNICIPAL AIRPORT AROUND 130 PM.

THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY
ISSUED FOR THE WARNED AREA.

THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR...SEEK SHELTER IN A REINFORCED BUILDING.

LAT...LON 4230 9490 4217 9473 4240 9437 4256 9458

$$

KINNEY

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 10:59 AM CDT	Tornado Warning	DMX	Crawford	31 min
Jun 16, 11:07 AM CDT	Severe Thunderstorm Warning	DMX	Sac	38 min
Jun 16, 12:19 PM CDT	Flash Flood Warning	DMX	Sac	3 hr
Jun 16, 12:28 PM CDT	Severe Thunderstorm Warning	DMX	Sac	47 min
Jun 16, 12:30 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	60 min
Jun 16, 1:17 PM CDT	Flash Flood Warning	DMX	Calhoun	3 hr
Jun 16, 1:23 PM CDT	Severe Thunderstorm Warning	DMX	Polk	52 min
Jun 16, 1:31 PM CDT	Severe Thunderstorm Warning	DMX	Webster	59 min
Jun 16, 1:38 PM CDT	Tornado Warning	DMX	Webster	57 min
Jun 16, 1:49 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	41 min
Jun 16, 2:29 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt	46 min
Jun 16, 2:35 PM CDT	Severe Thunderstorm Warning	DMX	Webster	40 min
Jun 16, 3:10 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Wright	50 min
Jun 16, 3:48 PM CDT	Flash Flood Warning	DMX	Cerro Gordo	4 hr
Jun 16, 3:58 PM CDT	Severe Thunderstorm Warning	DMX	Franklin	32 min
Jun 16, 4:27 PM CDT	Severe Thunderstorm Warning	DMX	Jasper	33 min
Jun 16, 5:24 PM CDT	Severe Thunderstorm Warning	DMX	Decatur	56 min

Nearby

Tornado Warnings in Iowa, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.