Alert archive / Iowa / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 99, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 10, 2002, 11:35 PM CDT for Carroll County, Iowa. It was in force for 55 min. 3 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 10, 2002, 11:35 PM CDT (04:35 UTC)
- Expired
- Jun 11, 2002, 12:30 AM CDT
- In force
- 55 min
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Carroll County, IA
The radar
The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 04:34 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 10, 11:45 PM CDT | Thunderstorm Wind 52 E | Manning, IA | |
| Jun 10, 11:56 PM CDT | Thunderstorm Wind 52 E | Halbur, IA | |
| Jun 11, 12:16 AM CDT | Thunderstorm Wind 50 M | Carroll Neu Arpt, 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 10, 9:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 4.6 hours before the alert went out and 147 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
- 4189 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 1042 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 13.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDMX 110435 SVRDSM IAC027-110530- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 1134 PM CDT MON JUN 10 2002 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CARROLL COUNTY IN WEST CENTRAL IOWA * UNTIL 1230 AM CDT * AT 1129 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES SOUTHWEST OF ARCADIA...OR ABOUT 60 MILES SOUTHWEST OF FORT DODGE...MOVING EAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE... NEAR ARCADIA AROUND 1138 PM... 5 MILES NORTH OF HALBUR AROUND 1143 PM... 6 MILES SOUTH OF BREDA AROUND 1143 PM... NEAR CARROLL AROUND 1150 PM... NEAR LIDDERDALE AROUND MIDNIGHT 5 MILES SOUTHWEST OF LANESBORO AROUND 1210 AM. OTHER WARNING LOCATIONS INCLUDE BREDA...CARROLL...DEDHAM...GLIDDEN... HALBUR...LANESBORO...LIDDERDALE...MANNING...TEMPLETON AND WILLEY. HURRICANE FORCE WINDS OF 70 TO 80 MILES AN HOUR ARE LIKELY IN THE WARNED AREA. GO TO A BASEMENT OR SMALL INTERIOR ROOM. EXTENSIVE DAMAGE IS LIKELY. EVACUATE MOBILE HOMES...AND SEEK SHELTER IN A STURDY BUILDING. SEVERE STRAIGHT LINE WINDS CAN SOUND LIKE A TORNADO...AND PRODUCE SIMILAR DAMAGE. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM TUESDAY MORNING FOR WESTERN IOWA. LAT...LON 4220 9509 4187 9508 4188 9465 4221 9466 KULA
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 11:11 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 49 min |
| Jun 10, 11:53 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 52 min |
| Jun 11, 12:42 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Webster | 63 min |
| Jun 11, 12:59 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 46 min |
| Jun 11, 1:17 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 43 min |
| Jun 11, 1:24 AM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hardin | 51 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2002Every severe thunderstorm warning in 2002
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.