Alert archive / Iowa / Tornado Warnings in 2001
Tornado Warning 56, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jun 18, 2001, 8:59 PM CDT for Humboldt County, Webster County, Wright County, Iowa. It was in force for 31 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, 8:59 PM CDT (01:59 UTC)
- Expired
- Jun 18, 2001, 9:30 PM CDT
- In force
- 31 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Humboldt County, IA, Webster County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 118 km from the middle of the area, began a volume at 02:03 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, 9:15 PM CDT | Thunderstorm Wind 50 M | Clarion, IA |
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
Minneapolis, MN (KMPX), launched 00:00Z, 2.0 hours before the alert went out and 231 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.
- Mixed-layer CAPE
- 2360 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1718 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 13.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDMX 190202 TORDSM IAC091-197-187-190230- BULLETIN - EAS ACTIVATION REQUESTED...CORRECTED TO ADD NORTHEAST WESTER COUNTY TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 859 PM CDT MON JUN 18 2001 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... EASTERN HUMBOLDT COUNTY IN NORTH CENTRAL IOWA WRIGHT COUNTY IN NORTH CENTRAL IOWA NORTHEAST WEBSTER COUNTY IN NORTH CENTRAL IOWA * UNTIL 930 PM CDT * AT 858 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 5 MILES WEST OF EAGLE GROVE...OR ABOUT 14 MILES NORTHEAST OF FORT DODGE...MOVING EAST AT 50 MPH. * THE TORNADO WILL BE... 6 MILES SOUTH OF CLARION AROUND 910 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 REMAINS IN EFFECT UNTIL 1100 PM MONDAY EVENING FOR NORTHWESTERN IOWA. LAT...LON 4289 9417 4265 9399 4257 9347 4292 9350 JOHNSON
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, 9:10 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 20 min |
| Jun 18, 9:15 PM CDT | Tornado Warning | DMX | Carroll | 30 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, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.