Alert archive / Iowa / Tornado Warnings in 1990
Tornado Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Mar 13, 1990, 3:42 PM CST for Davis County, Iowa. It was in force for 18 min.
The area
The counties it named.
The facts
- Issued
- Mar 13, 1990, 3:42 PM CST (21:42 UTC)
- Expired
- Mar 13, 1990, 4:00 PM CST
- In force
- 18 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Davis County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 9.7 hours before the alert went out and 337 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
- 1521 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 173 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 132144
TORDSM
IAC051-132200-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
342 PM CST TUE MAR 13 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 400 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST IOWA
...NORTHEASTERN DAVIS
AT 340 PM...A TORNADO WAS REPORTED 6 MILES EAST OF BLOOMFIELD IN DAVIS
COUNTY...ABOUT 20 MILES SOUTH OF OTTUMWA.
THE TORNADO WAS MOVING NORTHEAST AT 40 MILES AN HOUR...AND WILL BE
AFFECTING THE CITY OF TROY.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
KS/TRUETTThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 8:55 PM CST | Severe Thunderstorm Warning | DMX | Madison, Polk | 50 min |
| Mar 12, 11:17 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Monroe | 33 min |
| Mar 12, 11:28 PM CST | Severe Thunderstorm Warning | DMX | Lucas, Wayne | 20 min |
| Mar 12, 11:53 PM CST | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas | 52 min |
| Mar 13, 12:38 PM CST | Severe Thunderstorm Warning | DMX | Wright | 17 min |
| Mar 13, 1:33 PM CST | Severe Thunderstorm Warning | DMX | Poweshiek | 27 min |
| Mar 13, 1:51 PM CST | Severe Thunderstorm Warning | DMX | Tama | 39 min |
| Mar 13, 1:55 PM CST | Severe Thunderstorm Warning | DMX | Carroll | 35 min |
| Mar 13, 2:28 PM CST | Severe Thunderstorm Warning | DMX | Calhoun | 42 min |
| Mar 13, 2:31 PM CST | Severe Thunderstorm Warning | DMX | Black Hawk | 49 min |
| Mar 13, 3:24 PM CST | Severe Thunderstorm Warning | DMX | Davis | 36 min |
| Mar 13, 3:57 PM CST | Tornado Warning | DMX | Jefferson, Van Buren | 33 min |
| Mar 13, 4:18 PM CST | Severe Thunderstorm Warning | DMX | Bremer | 22 min |
| Mar 13, 4:18 PM CST | Severe Thunderstorm Warning | DMX | Chickasaw | 47 min |
| Mar 13, 5:11 PM CST | Severe Thunderstorm Warning | DMX | Washington | 49 min |
| Mar 13, 5:16 PM CST | Severe Thunderstorm Warning | DMX | Johnson | 29 min |
Nearby
Tornado Warnings in Iowa, 1990Every tornado warning in 1990Tornadoes in 1990
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.