Alert archive / Iowa / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 35, NWS Sioux Falls, SD

June 10, 1994Monona County, Woodbury County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 10, 1994, 2:00 PM CDT for Monona County, Woodbury County, Iowa. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jun 10, 1994, 2:00 PM CDT (19:00 UTC)
Expired
Jun 10, 1994, 2:30 PM CDT
In force
30 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

Counties Monona County, IA, Woodbury County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 7.0 hours before the alert went out and 105 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 12:00Z on 1994-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 333 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 12:00Z on 1994-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -54 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
333 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1191 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-54 m²/s²
0-3 km storm-relative helicity
-10 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 KSUX 101901 RRA
SVRSUX
IAC133-193-101930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
200 PM CDT FRI JUN 10 1994
 
THE NATIONAL WEATHER SERVICE IN SIOUX CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  230 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL IOWA
 
   ...NORTHERN MONONA COUNTY...SOUTHERN WOODBURY COUNTY
 
AT 155 PMCDT A SEVERE THUNDERSTORM WAS OVER HORNICK IOWA...25 MILES
SOUTHEAST OF SIOUX CITY. ONE INCH HAIL WAS REPORTED BY POLICE AT HORNICK
IOWA. MOVEMENT OF THIS STORM WAS EAST AT 25 MPH. THIS STORM WILL EFFECT
THE TOWNS OF DANBURY AND MAPLETON BETWEEN 215 AND 230 PM.
 
 
REMEMBER...SEVERE THUNDERpSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING...AND HEAVY RAINS THAT CAN
QUICKLY FLOOD LOW LYING AREAS. IF YOU ARE IN THE PATH OF THIS STORM
TAKE SHELTER IN A REINFORCED BUILDING IMMEDIATELY.
 
 
 
&

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, Jun 10, 1:15 PM CDT, 45 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-101915-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
115 PM CDT FRI JUN 10 1994

...A STRONG THUNDERSTORM WAS MOVING THROUGH THE SIOUX CITY AREA...

AT 110 PM CDT A STRONG THUNDERSTORM WAS AT THE SIOUX CITY AREA.
MOVEWMENT WAS EAST AT 25 MILES AN HOUR. THIS STORM WILL AFFECT A LINE
FROM MOVILLE TO HORNICK IOWA BY 2 PM. PEA SIZED HAIL WAS REPORTED AT THE
SIOUX GATEWAY AIRPORT ALONG WITH 30 MILE AN HOUR WIND GUSTS. MARBLE
SIZED HAIL WAS REPORTED AT SALIX IOWA AROUND 1 PM. THESE STORMS WILL
CONTINUE TO PRODUCE SMALL HAIL AND WIND GUSTS UP TO 40 MILES AN HOUR.
OTHER STORMS WERE MOVING THROUGH THE SHELDON AND PRIMGHAR AREAS. THESE
STORMS ALSO HAVE HAD A HISTORY OF PRODUCING SMALL HAIL.

MICHELS

&
Special weather statement, Jun 10, 1:17 PM CDT, 43 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-101915-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
115 PM CDT FRI JUN 10 1994

...A STRONG THUNDERSTORM WAS MOVING THROUGH THE SIOUX CITY AREA...

AT 110 PM CDT A STRONG THUNDERSTORM WAS AT THE SIOUX CITY AREA.
MOVEWMENT WAS EAST AT 25 MILES AN HOUR. THIS STORM WILL AFFECT A LINE
FROM MOVILLE TO HORNICK IOWA BY 2 PM. PEA SIZED HAIL WAS REPORTED AT THE
SIOUX GATEWAY AIRPORT ALONG WITH 30 MILE AN HOUR WIND GUSTS. MARBLE
SIZED HAIL WAS REPORTED AT SALIX IOWA AROUND 1 PM. THESE STORMS WILL
CONTINUE TO PRODUCE SMALL HAIL AND WIND GUSTS UP TO 40 MILES AN HOUR.
OTHER STORMS WERE MOVING THROUGH THE SHELDON AND PRIMGHAR AREAS. THESE
STORMS ALSO HAVE HAD A HISTORY OF PRODUCING SMALL HAIL.

MICHELS

&
Special weather statement, Jun 10, 1:31 PM CDT, 29 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-101915-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
115 PM CDT FRI JUN 10 1994

...A STRONG THUNDERSTORM WAS MOVING THROUGH THE SIOUX CITY AREA...

AT 110 PM CDT A STRONG THUNDERSTORM WAS AT THE SIOUX CITY AREA.
MOVEWMENT WAS EAST AT 25 MILES AN HOUR. THIS STORM WILL AFFECT A LINE
FROM MOVILLE TO HORNICK IOWA BY 2 PM. PEA SIZED HAIL WAS REPORTED AT THE
SIOUX GATEWAY AIRPORT ALONG WITH 30 MILE AN HOUR WIND GUSTS. MARBLE
SIZED HAIL WAS REPORTED AT SALIX IOWA AROUND 1 PM. THESE STORMS WILL
CONTINUE TO PRODUCE SMALL HAIL AND WIND GUSTS UP TO 40 MILES AN HOUR.
OTHER STORMS WERE MOVING THROUGH THE SHELDON AND PRIMGHAR AREAS. THESE
STORMS ALSO HAVE HAD A HISTORY OF PRODUCING SMALL HAIL.

MICHELS

&
Special weather statement, Jun 10, 1:38 PM CDT, 22 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-101915-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
115 PM CDT FRI JUN 10 1994

...A STRONG THUNDERSTORM WAS MOVING THROUGH THE SIOUX CITY AREA...

AT 110 PM CDT A STRONG THUNDERSTORM WAS AT THE SIOUX CITY AREA.
MOVEWMENT WAS EAST AT 25 MILES AN HOUR. THIS STORM WILL AFFECT A LINE
FROM MOVILLE TO HORNICK IOWA BY 2 PM. PEA SIZED HAIL WAS REPORTED AT THE
SIOUX GATEWAY AIRPORT ALONG WITH 30 MILE AN HOUR WIND GUSTS. MARBLE
SIZED HAIL WAS REPORTED AT SALIX IOWA AROUND 1 PM. THESE STORMS WILL
CONTINUE TO PRODUCE SMALL HAIL AND WIND GUSTS UP TO 40 MILES AN HOUR.
OTHER STORMS WERE MOVING THROUGH THE SHELDON AND PRIMGHAR AREAS. 2THESE
STORMS ALSO HAVE HAD A HISTORY OF PRODUCING SMALL HAIL.

MICHELS

&
Special weather statement, Jun 10, 1:43 PM CDT, 17 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-101945-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
143 PM CDT FRI JUN 10 1994

...STRONG THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH THE AREA...

AT 140 PM CDT A LINE OF STRONG THUNDERSTORMS WAS LOCATED 20 MILES EITHER
SIDE OF A LINE FROM HARTLEY IOWA TO SIOUX CITY IOWA. MOVEMENT WAS EAST
AT 25 MILES AN HOUR. PEA SIZED HAIL WAS REPORTED AT PAULINA IOWA AT 140
PM. HOLSTEIN AND CHEROKEE IOWA WILL SEE THESE STORMS BY 230 PM. PEA TO
MARBLE SIZED HAIL AND WIND GUSTS TO 40 MILES AN HOUR WILL ACCOMPANY
THESE STORMS.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 7 PM CDT FOR
CHEROKEE...IDA...OBRIEN...PLYMOUTH...AND WOODBURY COUNTIES IN IOWA.

MICHELS

&
Special weather statement, Jun 10, 1:43 PM CDT, 17 minutes before
IAZ021-032-043-013-020-031-NEZ014-013-015-SDZ071-101945-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX CITY IA
143 PM CDT FRI JUN 10 1994

...STRONG THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH THE AREA...

AT 140 PM CDT A LINE OF STRONG THUNDERSTORMS WAS LOCATED 20 MILES EITHER
SIDE OF A LINE FROM HARTLEY IOWA TO SIOUX CITY IOWA. MOVEMENT WAS EAST
AT 25 MILES AN HOUR. PEA SIZED HAIL WAS REPORTED AT PAULINA IOWA AT 140
PM. HOLSTEIN AND CHEROKEE IOWA WILL SEE THESE STORMS BY 230 PM. PEA TO
MARBLE SIZED HAIL AND WIND GUSTS TO 40 MILES AN HOUR WILL ACCOMPANY
THESE STORMS.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 7 PM CDT FOR
CHEROKEE...IDA...OBRIEN...PLYMOUTH...AND WOODBURY COUNTIES IN IOWA.

MICHELS

&

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 10, 2:39 PM CDTSevere Thunderstorm WarningFSDCherokee25 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1994Every severe thunderstorm warning 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.