Alert archive / Iowa / Tornado Warnings in 1988

Tornado Warning 12, NWS Des Moines, IA

November 15, 1988Monroe County, Iowa

NWS Des Moines, IA issued this tornado warning at Nov 15, 1988, 4:38 PM CST for Monroe County, Iowa. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Nov 15, 1988, 4:38 PM CST (22:38 UTC)
Expired
Nov 15, 1988, 5:15 PM CST
In force
37 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Monroe 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, 10.6 hours before the alert went out and 278 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 1988-11-15Temperature 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 1988-11-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 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
574 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDSM 152238
TORDSM
IAC135-152315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE DES MOINES IA
438 PM CST TUE NOV 15 1988

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 515 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY

   IN THE SOUTH CENTRAL PART OF IOWA
      CENTRAL AND NORTHEAST MONROE

AT 430 PM...MONROE COUNTY OFFICALS REPORTED A TORNADO IN THE
FAR SOUTHWEST CORNER OF MONROE COUNTY OR ABOUT 30 MILES WEST
SOUTHWEST OF OTTUMWA.

THE TORNADO IS MOVING TO THE NORTHEAST AROUND 40 MILES AN
HOUR AND WILL LIKELY AFFECT THE TOWNS OF ALBIA...HITEMAN...
LOCKMAN AND TYRONE.

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 SHELT#ER IN A REINFORCED BUILDING OR IN A DITCH.

MYERS

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, Nov 15, 2:24 PM CST, 2 hours 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
225 PM CST TUE NOV 15 1988

THE FOLLOWING COUNTIES IN NORTHWEST IOWA HAVE BEEN CLEARED FROM
TORNADO WATCH NUMBER 479.

...NORTHWEST...
BUENA VISTA     CHEROKEE        CLAY            DICKINSON
EMMET           O BRIEN         OSCEOLA         PALO ALTO
POCAHONTAS

...NORTH CENTRAL...
KOSSUTH

...WEST CENTRAL...
CALHOUN         IDA             SAC

THE A LARGE0 PORTION OF WEST CENTRAL...CENTRAL...NORTH CENTRAL AND
SOUTH CENTRAL IOWA REMAIN IN THE WATCH.

MYERS
Special weather statement, Nov 15, 2:47 PM CST, 1 hour 51 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
245 PM CST TUE NOV 15 1988

...TORNADO WATCH FOR WESTERN AND CENTRAL IOWA UNTIL 8 PM CST...

AT 235 PM CST...A 20 MILE WIDE BAND OF VERY STRONG THUNDERSTORMS
EXTENDED FROM NORTHWEST THROUGH CENTRAL INTO SOUTHWEST IOWA. THE
STORMS WERE LOCATED FROM 55 MILES NORTH NORTHWEST OF DES MOINES...
OR 10 MILES SOUTH OF FORT DODGE SOUTHWEST THROUGH ATLANTIC...60
MILES WEST OF DES MOINES SOUTHWEST TO SHENANDOAH...45 MILES SOUTHEAST
OF OMAHA/COUNCIL BLUFFS.

ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED WITH THESE STORMS...THERE
HAS BEEN VERY HEAVY RAIN...FREQUENT DANGEROUS LIGHTNING...40 TO 45
MILE AN HOUR WINDS ALONG WITH TO PEA TO MARBLE SIZED HAIL REPORTED.

THESE STORMS WERE PART OF A RAPIDLY EXPANDING AREA OF SHOWERS AND
STORMS OVER THE SOUTHWEST THIRD OF THE STATE. THE PRECIPITATION WAS
SOUTHWEST OF A LINE FROM SIOUX CITY NORTHEAST TO LIVERMORE OR 30 MILES
SOUTHWEST OF MASON CITY SOUTH TO LAMONI....IN SOUTH CENTRAL IOWA.

A SMALL AREA OF SHOWERS AND THUNDERSTORMS WAS LOCATED OVER THE FAR
SOUTHEAST COUNTIES OF THE STATE...BETWEEN OTTUMWA...CEDAR RAPIDS
...THE QUAD CITIES AND BURLINGTOYN.

THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 45 MILES AN HOUR.

BARLOW
Special weather statement, Nov 15, 3:52 PM CST, 46 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
350 PM CST TUE NOV 15 1988

...TORNADO WATCH FOR WESTERN AND CENTRAL IOWA UNTIL 8 PM CST...
...TORNADO WATCH FOR EASTERN IOWA UNTIL 11 PM CST...

AN INTENSE THUNDERSTORM WAS INDICATED OVER SOUTH CENTRAL IOWA.  AT
332 PM A THIS THUNDERSTORM WAS LOCATED 10 MILES NORTHEAST OF LAMONI.
EXTREMELY HEAVY RAINFALL AND WINDS OF 30 TO 40 MILES AN HOUR CAN BE
EXPECTED FROM THIS STORM AS IT MOVES NORTHEAST AT 45 MILES AN HOUR.

A 20 MILE WIDE BAND OF STRONG THUNDERSTORMS WAS INDICATED FROM
SOUTHWEST INTO NORTH CENTRAL IOWA.  THIS BAND OF STORMS WAS LOCATED
FROM JUST SOUTH OF CRESTON...60 MILES SOUTHWEST OF DES MOINES TO
35 MILES WEST OF DES MOINES NEAR GUTHRIE CENTER TO FORT DODGE.  THESE
STORMS WILL ALSO PRODUCE VERY HEAVY RAINFALL AND 30 TO 40 MILE AN
HOUR WIND GUSTS AS THEY MOVE NORTHEAST AT 45 MILES AN HOUR.
OTHERWISE NUMEROUS SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER ALL
BUT THE SOUTHEAST CORNER OF THE STATE.  ALL OF THIS PRECIPITAION
WAS MOVING NORTHEAST AT 45 MILES AN HOUR.

DF/CAB
Special weather statement, Nov 15, 4:00 PM CST, 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
400 PM CST TUE NOV 15 1988

THE FOLLOWING COUNTIES IN WEST CENTRAL AND SOUTHWEST IOWA HAVE BEEN
CLEARED FROM TORNADO WATCH NUMBER 479.

WEST CENTRAL...

CRAWFORD  CARROLL  GREENE  SHELBY  AUDUBON  GUTHRIE

SOUTWEST...

CASS  ADAIR  MONTGOMERY  ADAMS  FREMONT  PAGE  TAYLOR

THE REMAINDER OF NORTH CENTRL...CENTRAL AND SOUTH CENTRAL IOWA REMAIN
IN TORNADO WATCH NUMBER 479 UNTIL 8 PM.

ALL OF EASTERN IOWA IS ALSO UNDER TORNADO WATCH NUMBER 482 UNTIL 11 PM.
   MYERS
Special weather statement, Nov 15, 4:16 PM CST, 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WATERLOO IA
405 PM CST TUE NOV 15 1988

...TORNADO WATCH FOR NORTHEAST IOWA UNTIL 11PM CDT...
   TORNADO WATCH FOR NORTH CENTRAL IOWA UNTIL 8PM CDT...

AT 4 PM CDT NATIONAL WEATHER SERVICE RADAR AT WATERLOO WAS SHOWING
A 100 MILE WIDE BAND OF SHOWERS AND THUNDERSTORMS FROM THE MISSOURI
BORDER SOUTH OF DES MOINES TO THE MINNESOTA BORDER NORTH OF MASON
CITY.  ANOTHER AREA OF WIDELY SCATTERED SHOWERS AND THUNDERSTORMS
WAS LOCATED IN A 100 MILE WIDE BAND FROM MASON CITY TO DUBUQUE.

THESE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MILES AN
HOUR AND COULD PRODUCE WINDS IN EXCESS OF 58 MILES AN HOUR...LARGE...
HAIL AND POSSIBLE TORNADOES.

PEOPLE SHOULD BE ALERT FOR SEVERE WEATHER UNTIL 8 OR 9 PM IN NORTH
CENTRAL, IOWA AND UNTIL 11 PM IN NORTHEAST, IOWA.
ROBB
Special weather statement, Nov 15, 4:30 PM CST, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
430 PM CST TUE NOV 15 1988

        ...SNOW ADVISORY TONIGHT FOR NORTHWEST IOWA...

A SNOW ADVISORY HAS BEEN ISSUED FOR NORTHWEST IOWA TONIGHT.
TWO TO FOUR INCHES OF SNOW IS EXPECTED TO ACCUMULATE BY MORNING
IN PARTS OF NORTHWEST IOWA INCLUDING THE FOLLOWING CITIES...SIOUX
CITY...STORM LAKE...SPENCER...ESTHERVILLE...CHEROKEE...AND ALGONA.

MOTORISTS IN OR TRAVELLING INTO NORTHWEST IOWA TONIGHT SHOULD
EXERCISE EXTREME CAUTION AND USE THEIR WINTER DRIVING SKILLS.

RAIN WILL CHANGE TO SNOW IN NORTHWEST IOWA EARLY TONIGHT.  THERE MAY
BY SOME SLEET MIXED WITH THE RAIN FOR A BRIEF PERIOD BEFORE CHANGING
TO ALL SNOW.  THE SNOW WILL BE ACCOMPANIED BY STRONG NORTHWEST WINDS.

HAHN

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.