Alert archive / Iowa / Tornado Warnings in 2004

Tornado Warning 87, NWS Des Moines, IA

June 16, 2004Webster County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 16, 2004, 1:38 PM CDT for Webster County, Iowa. It was in force for 57 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 16, 2004, 1:38 PM CDT (18:38 UTC)
Expired: Jun 16, 2004, 2:35 PM CDT
In force: 57 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Webster County, IA

The radar

The Des Moines radar (KDMX), 89 km from the middle of the area, began a volume at 18:39 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.

What was reported inside it

Time	Report	Where	Remark
Jun 16, 1:40 PM CDT	TSTM WND DMG	4 S Barnum, IA	TWO BARNS DAMAGED OR DESTROYED.
Jun 16, 2:20 PM CDT	TSTM WND GST 60	4 W Fort Dodge, IA	AT HIGHWAY D14 HIGHWAY 169 NEAR THE FORT DODGE AIRPORT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.6 hours before the alert went out and 210 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.

015 
WFUS53 KDMX 161838
TORDMX
IAC187-161935-

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

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  WEBSTER COUNTY IN CENTRAL IOWA
  THIS INCLUDES THE CITY OF FORT DODGE

* UNTIL 235 PM CDT

* AT 135 PM...RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO 4 MILES SOUTHWEST OF BARNUM...OR ABOUT 13 MILES WEST OF
  FORT DODGE...MOVING NORTHEAST AT 25 MPH.

* THE STORM WILL BE...

  NEAR BARNUM AROUND 145 PM...
  4 MILES SOUTHEAST OF CLARE AROUND 155 PM...
  5 MILES NORTHWEST OF FORT DODGE AROUND 200 PM...
  3 MILES NORTHWEST OF FORT DODGE REGIONAL AIRPORT AROUND 205 PM...
  NEAR BADGER AROUND 215 PM AND
  6 MILES NORTHWEST OF VINCENT AROUND 225 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 4222 9440 4222 9398 4264 9400 4264 9444
      4248 9445 4248 9440

$$

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, 1:01 PM CDT	Tornado Warning	DMX	Calhoun	44 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, 1:49 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.