Alert archive / Iowa / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 146, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 29, 1998, 12:50 AM CDT for Adair County, Dallas County, Guthrie County, Iowa. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 29, 1998, 12:50 AM CDT (05:50 UTC)
- Expired
- May 29, 1998, 1:40 AM CDT
- In force
- 50 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Adair County, IA, Dallas County, IA, Guthrie County, IA
The radar
The Des Moines radar (KDMX), 54 km from the middle of the area, began a volume at 05:51 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 28, 8:45 PM CDT | Tornado Watch | SPC | 6 hr |
| May 28, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 5.8 hours before the alert went out and 172 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
- 2835 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1954 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 7.5
The text
As transmitted, in the capitals the NWS used until 2016.
051 WUUS1 KDSM 290551 RRA SVRDSM IAC001-049-077-290640- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 1250 AM CDT FRI MAY 29 1998 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ADAIR COUNTY IN SOUTHWESTERN IOWA DALLAS COUNTY IN CENTRAL IOWA SOUTHEASTERN GUTHRIE COUNTY IN WEST CENTRAL IOWA * UNTIL 140 AM CDT * AT 1248 AM CDT... DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS 36 MILES WEST OF DES MOINES OR 6 MILES NORTH OF STUART MOVING SOUTHEAST AT 30 MPH. THESE STORMS HAVE A HISTORY OF PRODUCING FUNNEL CLOUDS. * THIS STORM CAN BE EXPECTED NEAR... STUART NOW REDFIELD NOW ADEL BY 106 AM CDT DE SOTO BY 115 AM CDT GREENFIELD BY 112 AM CDT THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS. BSS/EP
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, May 28, 8:39 PM CDT, 4 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
839 PM CDT THU MAY 28 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0340 PM POCAHONTAS IA TORNADO
05/28/98 POCAHONTAS TORNADO 6 MILES NORTHWEST
OF POCAHANTAS
0523 PM RADCLIFFE IA WIND DAMAGE
05/28/98 HARDIN SHINGLES BLOWN OFF ROOF
0542 PM GRUNDY CENTER IA 70 MPH TSTM GUST
05/28/98 GRUNDY JUST NORTH OF GRUNDY
CENTER
0553 PM BADGER IA 1.75 INCH HAIL
05/28/98 WEBSTERLocal storm report, May 28, 9:34 PM CDT, 3 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
934 PM CDT THU MAY 28 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0459 PM IOWA FALLS IA 3 INCH HAIL
05/28/98 HARDIN 80 MPH WINDSLocal storm report, May 28, 9:56 PM CDT, 2 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
956 PM CDT THU MAY 28 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0856 PM LAKE CITY IA TORNADO
05/28/98 CALHOUN LIMBS DOWN AND 1 INCH
HAIL...TORNADO REPORTED 4
E LAKE CITYLocal storm report, May 28, 10:13 PM CDT, 2 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION FOR FORMAT
NATIONAL WEATHER SERVICE DES MOINES IA
1013 PM CDT THU MAY 28 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0920 PM 1 N CHARTER OAK IA TORNADO
05/28/98 CRAWFORD REPORTED BY LOCAL FIRE
DEPARTMENT
0926 PM 1 N LANYON IA 1 INCH HAIL
05/28/98 WEBSTER
0940 PM 2 N SCHLESWIG IA .75 INCH HAIL
05/28/98 CRAWFORD
0951 PM 5 NW DENISON IA 1.75 INCH HAIL
05/28/98 CRAWFORD
1012 PM 3 SE DELOIT IA 1.75 INCH HAIL
05/28/98 CRAWFORD
SMALLLocal storm report, May 28, 10:13 PM CDT, 2 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1013 PM CDT THU MAY 28 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0920 PM 1 N CHARTER OAK IA TORNADO
05/28/98 CRAWFORD REPORTED BY LOCAL FIRE
DEPARTMENT
0926 PM 1 N LANYON IA 1 INCH HAIL
05/28/98 WEBSTER
0940 PM 2 N SCHLESWIG IA .75 INCH HAIL
05/28/98 CRAWFORD
0951 PM 5 NW DENISON IA 1.75 INCH HAIL
05/28/98 CRAWFORD
1012 PM 3 SE DELOIT IA 1.75 INCH HAIL
05/28/98 CRAWFORD
SMALLLocal storm report, May 28, 10:13 PM CDT, 2 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION FOR FORMAT
NATIONAL WEATHER SERVICE DES MOINES IA
1013 PM CDT THU MAY 28 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0920 PM 1 N CHARTER OAK IA TORNADO
05/28/98 CRAWFORD REPORTED BY LOCAL FIRE
DEPARTMENT
0926 PM 1 N LANYON IA 1 INCH HAIL
05/28/98 WEBSTER
0940 PM 2 N SCHLESWIG IA .75 INCH HAIL
05/28/98 CRAWFORD
0951 PM 5 NW DENISON IA 1.75 INCH HAIL
05/28/98 CRAWFORD
1012 PM 3 SE DELOIT IA 1.75 INCH HAIL
05/28/98 CRAWFORD
SMALLThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 8:20 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 20 min |
| May 28, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 36 min |
| May 28, 8:57 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 33 min |
| May 28, 9:22 PM CDT | Tornado Warning | DMX | Crawford | 33 min |
| May 28, 9:29 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 36 min |
| May 28, 9:41 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 34 min |
| May 28, 9:52 PM CDT | Tornado Warning | DMX | Crawford | 33 min |
| May 28, 10:15 PM CDT | Severe Thunderstorm Warning | DMX | Story | 50 min |
| May 28, 10:21 PM CDT | Tornado Warning | DMX | Carroll, Crawford | 39 min |
| May 28, 10:21 PM CDT | Tornado Warning | DMX | Carroll, Crawford | 34 min |
| May 28, 10:40 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 50 min |
| May 28, 10:46 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 34 min |
| May 28, 10:50 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 35 min |
| May 28, 11:04 PM CDT | Tornado Warning | DMX | Carroll | 36 min |
| May 28, 11:10 PM CDT | Tornado Warning | DMX | Audubon | 35 min |
| May 28, 11:25 PM CDT | Tornado Warning | DMX | Greene, Guthrie | 35 min |
| May 28, 11:44 PM CDT | Tornado Warning | DMX | Audubon, Guthrie | 36 min |
| May 28, 11:59 PM CDT | Tornado Warning | DMX | Dallas, Guthrie | 51 min |
| May 29, 12:09 AM CDT | Severe Thunderstorm Warning | DMX | Audubon | 36 min |
| May 29, 12:24 AM CDT | Tornado Warning | DMX | Guthrie | 26 min |
| May 29, 12:33 AM CDT | Severe Thunderstorm Warning | DMX | Cass | 32 min |
| May 29, 1:24 AM CDT | Severe Thunderstorm Warning | DMX | Cass | 31 min |
| May 29, 2:01 AM CDT | Severe Thunderstorm Warning | DMX | Adams | 34 min |
| May 29, 2:01 AM CDT | Severe Thunderstorm Warning | DMX | Adams | 39 min |
| May 29, 2:21 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Union | 49 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1998Every severe thunderstorm warning in 1998
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; radar from the NEXRAD Level II archive.