Alert archive / Iowa / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 88, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 20, 1998, 3:46 AM CDT for Crawford County, Iowa. It was in force for 49 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 20, 1998, 3:46 AM CDT (08:46 UTC)
- Expired
- May 20, 1998, 4:35 AM CDT
- In force
- 49 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Crawford County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 20, 4:13 AM CDT | Thunderstorm Wind 61 | Dow City, 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 |
|---|---|---|---|
| May 20, 1:45 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 8.8 hours before the alert went out and 114 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
- 2454 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1962 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
275 WUUS1 KDSM 200847 RRA SVRDSM IAC047-200935- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 346 AM CDT WED MAY 20 1998 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CRAWFORD COUNTY IN WEST CENTRAL IOWA * UNTIL 435 AM CDT * AT 345 AM CDT... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 42 MILES NORTH OF OMAHA OR 16 MILES WEST SOUTHWEST OF DOW CITY MOVING EAST NORTHEAST AT 35 MPH. * THIS STORM CAN BE EXPECTED NEAR... DOW CITY BY 405 AM CDT ARION BY 408 AM CDT BUCK GROVE BY 412 AM CDT DENISON BY 420 AM CDT MANILLA BY 425 AM CDT DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS COGIL
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
Special weather statement, May 19, 10:08 PM CDT, 5 hours 38 minutes before
IAZ073>075-083>086-094>097-200330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1008 PM CDT TUE MAY 19 1998 THE REMAINING PORTIONS OF SEVERE THUNDERSTORM WATCH 370 HAVE EXPIRED ACROSS SOUTH CENTRAL AND SOUTHEAST IOWA. NO SEVERE WEATHER WATCHES ARE CURRENTLY IN EFFECT. SMALL
Special weather statement, May 19, 10:08 PM CDT, 5 hours 38 minutes before
IAZ073>075-083>086-094>097-200330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1008 PM CDT TUE MAY 19 1998 THE REMAINING PORTIONS OF SEVERE THUNDERSTORM WATCH 370 HAVE EXPIRED ACROSS SOUTH CENTRAL AND SOUTHEAST IOWA. NO SEVERE WEATHER WATCHES ARE CURRENTLY IN EFFECT. SMALL
Local storm report, May 19, 10:11 PM CDT, 5 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1011 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0306 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0316 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0415 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0424 PM 3 W COLFAX IA 1 INCH HAIL
05/19/98 JASPER 3/4 TO 1 INCH
0440 PM ANKENY IA .5 INCH HAIL
05/19/98 POLK DELETE THE ABOVE REPORT
0445 PM 8 W RUNNELLS IA TORNADO
05/19/98 POLK SMALL TORNADO...RIGHT
MOVER
0445 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST W OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST N OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION
0547 PM JOHNSTON IA .75 INCH HAIL
05/19/98 POLK
0547 PM HAVERHILL IA 1 INCH HAIL
05/19/98 MARSHALL
0550 PM MARSHALLTOWN ARPT IA 1.5 INCH HAIL
05/19/98 MARSHALL
0550 PM JOHNSTON IA .88 INCH HAIL
05/19/98 POLK
0555 PM WAUKEE IA 1.75 INCH HAIL
05/19/98 DALLAS
0559 PM LEIGHTON IA .75 INCH HAIL
05/19/98 MAHASKA
0600 PM 4 N JOHNSTON IA 1.75 INCH HAIL
05/19/98 POLK CARS DAMAGED
0602 PM WAUKEE IA 1 INCH HAIL
05/19/98 DALLAS
0612 PM ANKENY IA .88 INCH HAIL
05/19/98 POLK
0613 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0613 PM COLO IA 3 INCH HAIL
05/19/98 STORY HAIL REPORTED COVERING
ROAD TO DEPTH OF 4 INCHES
BETWEEN COLO AND COLLINS
0620 PM GRIMES IA .75 INCH HAIL
05/19/98 POLK
0629 PM EDDYVILLE IA 1.75 INCH HAIL
05/19/98 WAPELLO
0727 PM OTTUMWA ARPT IA 1 INCH HAIL
05/19/98 WAPELLO
0919 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST W OF PLEASANTVILLE
INCLUDES ALL REPORTS PREVIOUSLY SENT. FINAL REPORT WILL FOLLOW SHORTLY.Local storm report, May 19, 10:11 PM CDT, 5 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1011 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0306 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0316 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0415 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0424 PM 3 W COLFAX IA 1 INCH HAIL
05/19/98 JASPER 3/4 TO 1 INCH
0440 PM ANKENY IA .5 INCH HAIL
05/19/98 POLK DELETE THE ABOVE REPORT
0445 PM 8 W RUNNELLS IA TORNADO
05/19/98 POLK SMALL TORNADO...RIGHT
MOVER
0445 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST W OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST N OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION
0547 PM JOHNSTON IA .75 INCH HAIL
05/19/98 POLK
0547 PM HAVERHILL IA 1 INCH HAIL
05/19/98 MARSHALL
0550 PM MARSHALLTOWN ARPT IA 1.5 INCH HAIL
05/19/98 MARSHALL
0550 PM JOHNSTON IA .88 INCH HAIL
05/19/98 POLK
0555 PM WAUKEE IA 1.75 INCH HAIL
05/19/98 DALLAS
0559 PM LEIGHTON IA .75 INCH HAIL
05/19/98 MAHASKA
0600 PM 4 N JOHNSTON IA 1.75 INCH HAIL
05/19/98 POLK CARS DAMAGED
0602 PM WAUKEE IA 1 INCH HAIL
05/19/98 DALLAS
0612 PM ANKENY IA .88 INCH HAIL
05/19/98 POLK
0613 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0613 PM COLO IA 3 INCH HAIL
05/19/98 STORY HAIL REPORTED COVERING
ROAD TO DEPTH OF 4 INCHES
BETWEEN COLO AND COLLINS
0620 PM GRIMES IA .75 INCH HAIL
05/19/98 POLK
0629 PM EDDYVILLE IA 1.75 INCH HAIL
05/19/98 WAPELLO
0727 PM OTTUMWA ARPT IA 1 INCH HAIL
05/19/98 WAPELLO
0919 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST W OF PLEASANTVILLE
INCLUDES ALL REPORTS PREVIOUSLY SENT. FINAL REPORT WILL FOLLOW SHORTLY.Local storm report, May 19, 10:20 PM CDT, 5 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1020 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0306 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0316 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0415 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0424 PM 3 W COLFAX IA 1 INCH HAIL
05/19/98 JASPER 3/4 TO 1 INCH
0445 PM 8 W RUNNELLS IA TORNADO
05/19/98 POLK SMALL TORNADO
0445 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST W OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST N OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION
0547 PM JOHNSTON IA .75 INCH HAIL
05/19/98 POLK
0547 PM HAVERHILL IA 1 INCH HAIL
05/19/98 MARSHALL
0550 PM MARSHALLTOWN ARPT IA 1.5 INCH HAIL
05/19/98 MARSHALL
0550 PM JOHNSTON IA .88 INCH HAIL
05/19/98 POLK
0555 PM WAUKEE IA 1.75 INCH HAIL
05/19/98 DALLAS
0559 PM LEIGHTON IA .75 INCH HAIL
05/19/98 MAHASKA
0600 PM 4 N JOHNSTON IA 1.75 INCH HAIL
05/19/98 POLK CARS DAMAGED
0602 PM WAUKEE IA 1 INCH HAIL
05/19/98 DALLAS
0612 PM ANKENY IA .88 INCH HAIL
05/19/98 POLK
0613 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0613 PM COLO IA 3 INCH HAIL
05/19/98 STORY HAIL REPORTED COVERING
ROAD TO DEPTH OF 4 INCHES
BETWEEN COLO AND COLLINS
0620 PM GRIMES IA .75 INCH HAIL
05/19/98 POLK
0629 PM EDDYVILLE IA 1.75 INCH HAIL
05/19/98 WAPELLO
0727 PM OTTUMWA ARPT IA 1 INCH HAIL
05/19/98 WAPELLO
0733 PM INDIANOLA IA 1.75 INCH HAIL
05/19/98 WARREN GOLF BALL HAIL SHREDDING
TREES
0800 PM MEDORA IA 1.75 INCH HAIL
05/19/98 WARREN
FINAL REPORT. INCLUDES ALL REPORTS PREVIOUSLY SENT.Local storm report, May 19, 10:20 PM CDT, 5 hours 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1020 PM CDT TUE MAY 19 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0306 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0316 PM 2 N RUNNELLS IA .75 INCH HAIL
05/19/98 POLK
0415 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0424 PM 3 W COLFAX IA 1 INCH HAIL
05/19/98 JASPER 3/4 TO 1 INCH
0445 PM 8 W RUNNELLS IA TORNADO
05/19/98 POLK SMALL TORNADO
0445 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST W OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION JUST N OF PLEASANTVILLE
0450 PM 8 SE HARTFORD IA TORNADO
05/19/98 MARION
0547 PM JOHNSTON IA .75 INCH HAIL
05/19/98 POLK
0547 PM HAVERHILL IA 1 INCH HAIL
05/19/98 MARSHALL
0550 PM MARSHALLTOWN ARPT IA 1.5 INCH HAIL
05/19/98 MARSHALL
0550 PM JOHNSTON IA .88 INCH HAIL
05/19/98 POLK
0555 PM WAUKEE IA 1.75 INCH HAIL
05/19/98 DALLAS
0559 PM LEIGHTON IA .75 INCH HAIL
05/19/98 MAHASKA
0600 PM 4 N JOHNSTON IA 1.75 INCH HAIL
05/19/98 POLK CARS DAMAGED
0602 PM WAUKEE IA 1 INCH HAIL
05/19/98 DALLAS
0612 PM ANKENY IA .88 INCH HAIL
05/19/98 POLK
0613 PM ANKENY IA 1.75 INCH HAIL
05/19/98 POLK
0613 PM COLO IA 3 INCH HAIL
05/19/98 STORY HAIL REPORTED COVERING
ROAD TO DEPTH OF 4 INCHES
BETWEEN COLO AND COLLINS
0620 PM GRIMES IA .75 INCH HAIL
05/19/98 POLK
0629 PM EDDYVILLE IA 1.75 INCH HAIL
05/19/98 WAPELLO
0727 PM OTTUMWA ARPT IA 1 INCH HAIL
05/19/98 WAPELLO
0733 PM INDIANOLA IA 1.75 INCH HAIL
05/19/98 WARREN GOLF BALL HAIL SHREDDING
TREES
0800 PM MEDORA IA 1.75 INCH HAIL
05/19/98 WARREN
FINAL REPORT. INCLUDES ALL REPORTS PREVIOUSLY SENT.The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 7:23 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 47 min |
| May 19, 7:31 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 34 min |
| May 19, 7:59 PM CDT | Severe Thunderstorm Warning | DMX | Lucas | 36 min |
| May 20, 3:53 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 62 min |
| May 20, 4:31 AM CDT | Severe Thunderstorm Warning | DMX | Carroll | 49 min |
| May 20, 5:20 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 60 min |
| May 20, 5:47 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 48 min |
| May 20, 10:19 AM CDT | Severe Thunderstorm Warning | DMX | Marion | 36 min |
| May 20, 10:21 AM CDT | Severe Thunderstorm Warning | DMX | Marion | 34 min |
| May 20, 10:50 AM CDT | Severe Thunderstorm Warning | DMX | Monroe | 35 min |
| May 20, 11:05 AM CDT | Severe Thunderstorm Warning | DMX | Wapello | 35 min |
| May 20, 11:45 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 20 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.