Alert archive / Iowa / Tornado Warnings in 1988

Tornado Warning 9, NWS Des Moines, IA

May 8, 1988Washington County, Iowa

NWS Des Moines, IA issued this tornado warning at May 8, 1988, 3:00 PM CDT for Washington County, Iowa. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
May 8, 1988, 3:00 PM CDT (20:00 UTC)
Expired
May 8, 1988, 3:30 PM CDT
In force
30 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Washington 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

Peoria Regional, IL (KPIA), launched 12:00Z, 8.0 hours before the alert went out and 193 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.

Skew-T log-pSkew-T log-p diagram, Peoria Regional, IL at 12:00Z on 1988-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peoria Regional, IL at 12:00Z on 1988-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 194 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1404 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
194 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KDSM 082000
TORDSM
IAC183-082030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE DES MOINES IA
300 PM CDT SUN MAY 8 1988

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 330 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE SOUTHEAST PART OF IOWA
      EASTERN WASHINGTON

AT 255 PM...WEATHER RADAR INDICATED A SEVERE THUNDERSTORM OVER
40 MILES NORTHEAST OF OTTUMWA.

TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS
STORM.

THE STORM WAS MOVING NORTHEAST AT 45 MILES AN HOUR...AND WILL
AFFECT THE TOWNS OF AINSWORTH...HAVRE...HASKINS AND LONE TREE.

IF YOU ARE IN THE PATH OF THIS TORNADO...THE SAFEST PLACE IS IN A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.  IF
NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM ON THE
LOWEST FLOOR.  IF YOU ARE IN A VEHICLE OR MOBILE HOME...LEAVE IT AT
ONCE AND TAKE SHELTER *IN A REINFORCED BUILDING OR IN A DITCH.

MCQUIRTER/BRUCE

What forecasters said that day

The local office's own words before this tornado 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 8, 2:17 PM CDT, 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
215 PM CDT SUN MAY 8 1988

A TORNADO WATCH CONTINUES FOR A LARGE PART OF CENTRAL AND
EASTERN IOWA UNTIL 400 PM...

A LINE OF SEVERE THUNDERSTORMS WILL MOVING INTO THE CEDAR RAPIDS
AND IOWA CITY AREA BETWEEN 215 PM AND 300 PM THIS AFTERNOON.

LARGE HAIL...DAMAGING WINDS AND HEAVY RAIN ARE LIKELY WITH SOME

PEOPLE SHOULD BE ON THE LOOKOUT...AND LISTEN FOR POSSIBLE WARNING
OR STATEMENTS.

LARGE HAIL...DAMAGING WINDS AND HEAVY RAIN ARE LIKELY WITH THESE STORMS.

THE STORMS WERE MOVING NORTHEAST AT 45 MILES AN HOUR...WHILE THE LINE
WAS MOVING EAST AT 15 MILES AN HOUR.
MCQIRTER
Special weather statement, May 8, 2:40 PM CDT, 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
239 PM CDT SUN MAY 8 1988

THE FOLLOWING COUNTIES IN NORTH CENTRAL IOWA ARE CLEARED FROM
TORNADO WATCH NUMBER 110:

   WINNEBAGO...WORTH...MITCHELL...HANCOCK...CERRO GORDO...AND
   FLOYD.

THE FOLLOWING COUNTIES OVER NORTH CENTRAL...CENTRAL...SOUTH
CENTRAL...AND SOUTHWEST IOWA ARE CLEARED FROM TORNADO WATCH
NUMBER 108:

   WRIGHT...FRANKLIN...HAMILTON...HARDIN...BOONE...STORY...
   MARSHALL...DALLAS...POLK...JASPER...MADISON...WARREN...
   MARION...ADAIR...ADAMS...TAYLOR...UNION...CLARKE...LUCAS...
   RINGGOLD...DECATUR...WAYNE.

WHILE SHOWERS AND THUNDERSTORMS ARE STILL POSSIBLE OVER THE
CLEARED COUNTIES...THE SEVERE WEATHER HAS MOVED EAST OF THESE.

TORNADO WATCHES 108...110...AND 111 REMAIN IN EFFECT AT THE
PRESENT TIME FOR ABOUT THE EASTERN THIRD OF THE STATE.

BIKLE
Local storm report, May 8, 2:59 PM CDT, 1 minute before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
255 PM CDT SUN MAY 8 1988

THE FOLLOWING ARE THE STORM REPORTS RECEIVED FROM THE LATE MORNING TO
EARLY AFTERNOON OF THE 8TH.

              ...   MAY 8TH   ...

TIME          EVENT

1100 AM CDT   GOLF BALL SIZE HAIL 2SE CRESTON. /UNION/

1123 AM CDT   FUNNEL CLOUD SW ST. CHARLES. MARBLE SIZED HAIL. /MADISON/

1136 AM CDT   PEA SIZE HAIL IN ST. MARY. /WARREN/

1145 AM CDT   MARBLE SIZE HAIL AT NORWALK. /WARREN/
1146 AM CDT   DIME SIZE HAIL 6 MILES SOUTH OF NORWALK. /WARREN/

1156 AM CDT   POSSIBLE FUNNEL EAST OF HARTFORD. /WARREN/

1200 PM CDT   3/4 INCH HAIL AT CARLISLE. /WARREN/

1200 PM CDT   3/4 INCH HAIL AT INDIANOLA. /WARREN/

1204 PM CDT   MARBLE SIZED HAIL 2 MILES NORTH OF RUNNELS.  ALSO 30
              TO 40 MILE AN HOUR WINDS. /POLK/

1220 PM CDT   PEANUT SIZED HAIL AT ROCKWELL. /CALHOUN/

1228 PM CDT   3/4 INCH HAIL 5 MILES NORTHWEST NEWTON. /JASPER/

1230 PM CDT   ONE INCH HAIL 5 MILES NORTHWEST NEWTON. /JASPER/

1230 PM CDT   PEA SIZED HAIL AND STRONG WINDS AT BAXTER AND
              MELBOURNE. /MARSHALL

1230 PM CDT   PEA SIZED HAIL AT INDIANOLA. /WARREN/

 130 PM CDT   PEA TO MARBLE SIZED HAIL AT PELLA. /MARION/

 130 PM CDT   PUBLIC REPORT OF TORNADO BLOWING DOWN BARN AT LAMONI.
               /DECATUR/

 150 PM CDT   PEA TO MARBLE SIZED HAIL COVERING GROUND AT GARRISON
              AND NEAR KEYSTONE. /BENTON/

 150 PM CDT   3 HOUSES DAMAGED...1 SERIOUSLY...NE EDGE OF CENTERVILLE.
               /APANOOSE/

 158 PM CDT   TORNADO 3 MILES NORTH OF GIBSON./ KEOKUL/

 205 PM CDT   TORNADO ON THE GROUND 3 MILES NORTHEAST BLOOMFIELD.
              TORNADO AT LAKE KEOMA'H.

 206 PM CDT   TORNADO 1 MILE EAST OSKALOOSA. /MAHASKA/

 207 PM CDT   FUNNEL CLOUDS AT PELLA. /MARION/

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 7:45 PM CDTSevere Thunderstorm WarningDMXCrawford, Sac30 min
May 7, 8:20 PM CDTSevere Thunderstorm WarningDMXCalhoun, Sac25 min
May 7, 8:35 PM CDTSevere Thunderstorm WarningDMXCrawford40 min
May 7, 8:50 PM CDTSevere Thunderstorm WarningDMXCalhoun, Pocahontas40 min
May 7, 9:05 PM CDTSevere Thunderstorm WarningDMXHumboldt35 min
May 7, 9:30 PM CDTSevere Thunderstorm WarningDMXEmmet20 min
May 7, 9:31 PM CDTSevere Thunderstorm WarningDMXCrawford, Sac44 min
May 8, 12:02 AM CDTSevere Thunderstorm WarningDMXCrawford43 min
May 8, 4:38 AM CDTSevere Thunderstorm WarningDMXHumboldt37 min
May 8, 9:42 AM CDTSevere Thunderstorm WarningDMXRinggold, Taylor33 min
May 8, 10:26 AM CDTSevere Thunderstorm WarningDMXRinggold, Taylor34 min
May 8, 11:08 AM CDTSevere Thunderstorm WarningDMXMadison52 min
May 8, 11:20 AM CDTSevere Thunderstorm WarningDMXClarke, Warren70 min
May 8, 11:41 AM CDTSevere Thunderstorm WarningDMXPolk49 min
May 8, 11:44 AM CDTSevere Thunderstorm WarningDMXFranklin61 min
May 8, 12:01 PM CDTTornado WarningDMXJasper29 min
May 8, 12:15 PM CDTTornado WarningDMXJasper45 min
May 8, 12:25 PM CDTSevere Thunderstorm WarningDMXCerro Gordo65 min
May 8, 12:34 PM CDTSevere Thunderstorm WarningDMXMarshall41 min
May 8, 12:43 PM CDTSevere Thunderstorm WarningDMXClarke32 min
May 8, 12:55 PM CDTSevere Thunderstorm WarningDMXTama50 min
May 8, 12:58 PM CDTSevere Thunderstorm WarningDMXLucas, Marion, Warren47 min
May 8, 1:24 PM CDTSevere Thunderstorm WarningDMXBlack Hawk36 min
May 8, 1:25 PM CDTSevere Thunderstorm WarningDMXMarion35 min
May 8, 1:33 PM CDTTornado WarningDMXPoweshiek27 min
May 8, 1:40 PM CDTSevere Thunderstorm WarningDMXBremer50 min
May 8, 2:01 PM CDTTornado WarningDMXIowa, Poweshiek29 min
May 8, 2:11 PM CDTTornado WarningDMXKeokuk, Mahaska49 min
May 8, 2:23 PM CDTSevere Thunderstorm WarningDMXBuchanan, Fayette42 min
May 8, 2:35 PM CDTTornado WarningDMXIowa30 min
May 8, 2:35 PM CDTTornado WarningDMXJohnson40 min

Nearby

Tornado Warnings in Iowa, 1988Every tornado warning in 1988Tornadoes in 1988

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.