Alert archive / Iowa / Tornado Warnings in 2001

Tornado Warning 57, NWS Des Moines, IA

June 18, 2001Carroll County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 18, 2001, 9:15 PM CDT for Carroll County, Iowa. It was in force for 30 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Jun 18, 2001, 9:15 PM CDT (02:15 UTC)
Expired: Jun 18, 2001, 9:45 PM CDT
In force: 30 min
Issued by: NWS Des Moines, IA
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Carroll County, IA

The radar

The Des Moines radar (KDMX), 98 km from the middle of the area, began a volume at 02:18 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 18, 9:25 PM CDT	Tornado F0	Glidden, IA	Brief touchdown in open area south of town.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 18, 8:45 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.3 hours before the alert went out and 154 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: 2637 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 2202 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 346 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 16.5

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 190216
TORDSM

IAC027-190245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
915 PM CDT MON JUN 18 2001

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN CARROLL COUNTY IN WEST CENTRAL IOWA

* UNTIL 945 PM CDT

* AT 913 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 7 MILES SOUTH OF CARROLL...OR ABOUT 52 MILES SOUTHWEST OF
  FORT DODGE...MOVING EAST AT 25 MPH.

* THE TORNADO WILL BE...
  NEAR CARROLL AROUND 925 PM
  NEAR GLIDDEN AROUND 935 PM

IF YOU ARE CAUGHT OUTSIDE...GO TO A NEARBY REINFORCED BUILDING. AS A
LAST RESORT...GET IN A CULVERT OR DITCH AND COVER YOUR HEAD WITH YOUR
HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM TUESDAY
MORNING FOR IOWA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT
UNTIL 1100 PM MONDAY EVENING FOR WEST CENTRAL IOWA. A SEVERE
THUNDERSTORM WATCH ALSO LREMAINS IN EFFECT UNTIL 1100 PM MONDAY
EVENING FOR NORTHWESTERN IOWA.

LAT...LON 4221 9491 4185 9491 4186 9465 4222 9467

FORSTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:32 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	38 min
Jun 18, 7:36 PM CDT	Severe Thunderstorm Warning	DMX	Emmet	19 min
Jun 18, 7:52 PM CDT	Severe Thunderstorm Warning	DMX	Palo Alto	38 min
Jun 18, 7:57 PM CDT	Severe Thunderstorm Warning	DMX	Pocahontas	48 min
Jun 18, 8:00 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	40 min
Jun 18, 8:06 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Winnebago	39 min
Jun 18, 8:18 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	42 min
Jun 18, 8:38 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Webster	42 min
Jun 18, 8:43 PM CDT	Severe Thunderstorm Warning	DMX	Hancock	42 min
Jun 18, 8:45 PM CDT	Severe Thunderstorm Warning	DMX	Winnebago	40 min
Jun 18, 8:53 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Crawford	42 min
Jun 18, 8:59 PM CDT	Tornado Warning	DMX	Humboldt, Webster, Wright	31 min
Jun 18, 9:10 PM CDT	Severe Thunderstorm Warning	DMX	Worth	20 min
Jun 18, 9:44 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Winnebago	31 min
Jun 18, 9:52 PM CDT	Severe Thunderstorm Warning	DMX	Hancock, Winnebago	23 min
Jun 18, 10:00 PM CDT	Severe Thunderstorm Warning	DMX	Cass	45 min
Jun 18, 10:04 PM CDT	Severe Thunderstorm Warning	DMX	Story	41 min
Jun 18, 10:07 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Guthrie	43 min
Jun 18, 10:10 PM CDT	Severe Thunderstorm Warning	DMX	Worth	30 min
Jun 18, 10:12 PM CDT	Severe Thunderstorm Warning	DMX	Grundy	28 min
Jun 18, 10:23 PM CDT	Severe Thunderstorm Warning	DMX	Marshall	42 min
Jun 18, 10:37 PM CDT	Severe Thunderstorm Warning	DMX	Worth	28 min
Jun 18, 10:44 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk	46 min
Jun 18, 10:47 PM CDT	Severe Thunderstorm Warning	DMX	Tama	38 min
Jun 18, 10:49 PM CDT	Severe Thunderstorm Warning	DMX	Marion, Warren	46 min
Jun 18, 10:52 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk	23 min
Jun 18, 10:58 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold	47 min
Jun 18, 11:07 PM CDT	Severe Thunderstorm Warning	DMX	Audubon	28 min
Jun 18, 11:45 PM CDT	Severe Thunderstorm Warning	DMX	Decatur	40 min

Nearby

Tornado Warnings in Iowa, 2001 Every tornado warning in 2001 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.