Alert archive / Iowa / Tornado Warnings in 1994

Tornado Warning 29, NWS Des Moines, IA

October 6, 1994Carroll County, Iowa

NWS Des Moines, IA issued this tornado warning at Oct 6, 1994, 7:28 PM CDT for Carroll County, Iowa. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
Oct 6, 1994, 7:28 PM CDT (00:28 UTC)
Expired
Oct 6, 1994, 8:00 PM CDT
In force
32 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Carroll County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.5 hours before the alert went out and 148 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, Omaha, NE at 00:00Z on 1994-10-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 151 joules per kilogram.LCLLFCEL10008507005003002001001 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, Omaha, NE at 00:00Z on 1994-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
151 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
1641 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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 070027
TORDSM
IAC027-070100-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
728 PM CDT THU OCT 6 1994
 
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  800 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL IOWA
 
   ...WESTERN CARROLL COUNTY
 
728 PM CDT...DOPPLER RADAR INDICATED A TORNADO NEAR ARCADIA OR 65 MILES
NORTHEAST OF COUNCIL BLUFFS. THE TORNADO WAS MOVING NORTHEAST AT 40
MILES AN HOUR. CITIES IN THE PATH OF THIS TORNADO ARE BREDA AND MT
CARMEL.
 
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 AV AILABLE...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.
 
JM

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, Oct 6, 6:40 PM CDT, 48 minutes before
IAZALL-0701000-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
640 PM CDT THU OCT 6 1994

...A TORNADO WATCH IS EFFECT FOR THE WESTERN HALF OF IOWA UNTIL
   MIDNIGHT...

AT 630 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS OVER PORTIONS OF
WEST CENTRAL AND NORTHWEST IOWA. THE STORMS STRETCHED FROM COUNCIL
BLUFFS NORTH TO NEAR ESTHERVILLE. LARGE HAIL...DAMAGING WINDS...
FREQUENT LIGHTNING AND TORRENTIAL RAINFALL ARE POSSIBLE WITH THESE
STORMS. ELSEWHERE...LESS INTENSE SHOWERS AND THUNDERSTORMS WERE LOCATED
IN A 15 MILE WIDE BAND CENTERED FROM THE MINNESOTA BORDER NORTH OF MASON
CITY SOUTH THROUGH DES MOINES TO LAMONI.

MOVEMENT OF ALL THE PRECIPITATION WAS NORTH AT 40 MPH.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TV AND RADIO STATIONS FOR
UPDATES ON THIS POTENTIALLY DANGEROUS WEATHER SITUATION.

PETERSEN
Special weather statement, Oct 6, 6:45 PM CDT, 43 minutes before
IAZALL-0701000-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
640 PM CDT THU OCT 6 1994

...A TORNADO WATCH IS EFFECT FOR THE WESTERN HALF OF IOWA UNTIL
   MIDNIGHT...

AT 630 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS OVER PORTIONS OF
WEST CENTRAL AND NORTHWEST IOWA. THE STORMS STRETCHED FROM COUNCIL
BLUFFS NORTH TO NEAR ESTHERVILLE. LARGE HAIL...DAMAGING WINDS...
FREQUENT LIGHTNING AND TORRENTIAL RAINFALL ARE POSSIBLE WITH THESE
STORMS. ELSEWHERE...LESS INTENSE SHOWERS AND THUNDERSTORMS WERE LOCATED
IN A 15 MILE WIDE BAND CENTERED FROM THE MINNESOTA BORDER NORTH OF MASON
CITY SOUTH THROUGH DES MOINES TO LAMONI.

MOVEMENT OF ALL THE PRECIPITATION WAS NORTH AT 40 MPH.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL TV AND RADIO STATIONS FOR
UPDATES ON THIS POTENTIALLY DANGEROUS WEATHER SITUATION.

PETERSEN
Special weather statement, Oct 6, 7:10 PM CDT, 18 minutes before
IAZ023-0250030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
710 PM CDT THU OCT 6 1994

...MARBLE SIZE HAIL IN POCHAHONTAS COUNTY

AT 7 PM MARBLE SIZE HAIL WAS REPORTED 2 MILES WEST OF LAURENS IN EXTREME
NORTHWEST POCHAHONTAS COUNTY. THE STORM PRODUCING THIS HAIL WAS MOVING
NORTH AT 40 MPH AND WILL APPROACH THE EMMETSBURG AREA BY 730 PM.

IF THREATENING WEATHER APPROACHES...SEEK SHELTER IN A STURDY BUILDING
AWAY FROM WINDOW.

ETP
Special weather statement, Oct 6, 7:12 PM CDT, 16 minutes before
IAZ023-0250030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
710 PM CDT THU OCT 6 1994

...MARBLE SIZE HAIL IN POCHAHONTAS COUNTY

AT 7 PM MARBLE SIZE HAIL WAS REPORTED 2 MILES WEST OF LAURENS IN EXTREME
NORTHWEST POCHAHONTAS COUNTY. THE STORM PRODUCING THIS HAIL WAS MOVING
NORTH AT 40 MPH AND WILL APPROACH THE EMMETSBURG AREA BY 730 PM.

IF THREATENING WEATHER APPROACHES...SEEK SHELTER IN A STURDY BUILDING
AWAY FROM WINDOW.

ETP
Special weather statement, Oct 6, 7:13 PM CDT, 15 minutes before
IAZ016-017-026-070115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WATERLOO IA
714 PM CDT THU OCT 6 1994

...A TORNADO WATCH REMAINS IN EFFECT FOR CERRO GORDO...FRANKLIN AND
   HANCOCK COUNTIES UNTIL MIDNIGHT TONIGHT...

THROUGH 815 PM...SHOWERS AND ISOLATED STRONG THUNDERSTORMS WILL
CONTINUE TO PLAGUE THOSE AREAS ALONG AND WEST OF HIGHWAY 14.  THESE
SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MPH AND WILL
PRODUCE BRIEF HEAVY RAINS AND SUDDEN WIND GUST UP TO 40 TO 50 MPH
IN WINNEBAGO...HANCOCK AND CERRO GORDO COUNTIES.

OTHERWISE THE REST OF NORTHEAST IOWA WILL SEE MOSTLY CLOUDY SKIES
PREVAILING WITH PATCHY SHOWERS CONTINUING TO PLAGUE ALLAMAKEE COUNTY
THROUGH 8 PM.

REMEMBER...A TORNADO WATCH MEANS THAT TORNADOES ARE POSSIBLE IN
AND NEAR THE WATCH AREA.  LARGE HAIL AND DAMAGING WINDS MAY ALSO
OCCUR.  BE READY TO MOVE TO SHELTER IF A WARNING IS ISSUED FOR YOUR
AREA.
Special weather statement, Oct 6, 7:14 PM CDT, 14 minutes before
IAZ016-017-026-070115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WATERLOO IA
714 PM CDT THU OCT 6 1994

...A TORNADO WATCH REMAINS IN EFFECT FOR CERRO GORDO...FRANKLIN AND
   HANCOCK COUNTIES UNTIL MIDNIGHT TONIGHT...

THROUGH 815 PM...SHOWERS AND ISOLATED STRONG THUNDERSTORMS WILL
CONTINUE TO PLAGUE THOSE AREAS ALONG AND WEST OF HIGHWAY 14.  THESE
SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT 40 MPH AND WILL
PRODUCE BRIEF HEAVY RAINS AND SUDDEN WIND GUST UP TO 40 TO 50 MPH
IN WINNEBAGO...HANCOCK AND CERRO GORDO COUNTIES.

OTHERWISE THE REST OF NORTHEAST IOWA WILL SEE MOSTLY CLOUDY SKIES
PREVAILING WITH PATCHY SHOWERS CONTINUING TO PLAGUE ALLAMAKEE COUNTY
THROUGH 8 PM.

REMEMBER...A TORNADO WATCH MEANS THAT TORNADOES ARE POSSIBLE IN
AND NEAR THE WATCH AREA.  LARGE HAIL AND DAMAGING WINDS MAY ALSO
OCCUR.  BE READY TO MOVE TO SHELTER IF A WARNING IS ISSUED FOR YOUR
AREA.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 6, 7:41 PM CDTSevere Thunderstorm WarningDMXSac14 min
Oct 6, 7:55 PM CDTSevere Thunderstorm WarningDMXCalhoun35 min
Oct 6, 9:42 PM CDTSevere Thunderstorm WarningDMXBoone, Hamilton33 min
Oct 6, 9:42 PM CDTSevere Thunderstorm WarningDMXDallas, Madison33 min
Oct 6, 9:52 PM CDTSevere Thunderstorm WarningDMXWright38 min
Oct 6, 9:59 PM CDTSevere Thunderstorm WarningDMXHancock31 min
Oct 6, 10:09 PM CDTSevere Thunderstorm WarningDMXWinnebago33 min
Oct 6, 10:09 PM CDTSevere Thunderstorm WarningDMXWorth51 min
Oct 6, 10:12 PM CDTSevere Thunderstorm WarningDMXStory33 min
Oct 6, 10:24 PM CDTSevere Thunderstorm WarningDMXHamilton, Wright81 min
Oct 6, 10:35 PM CDTSevere Thunderstorm WarningDMXCerro Gordo25 min

Nearby

Tornado Warnings in Iowa, 1994Every tornado warning in 1994Tornadoes in 1994

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.