Alert archive / Iowa / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 192, NWS Des Moines, IA

October 6, 1994Sac County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Oct 6, 1994, 7:41 PM CDT for Sac County, Iowa. It was in force for 14 min.

The area

The counties it named.

The facts

Issued: Oct 6, 1994, 7:41 PM CDT (00:41 UTC)
Expired: Oct 6, 1994, 7:55 PM CDT
In force: 14 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Sac County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.7 hours before the alert went out and 158 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Oct 6, 7:10 PM CDT, 31 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, 29 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, 28 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.

Special weather statement, Oct 6, 7:14 PM CDT, 27 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.

Special weather statement, Oct 6, 7:40 PM CDT, 1 minute before

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Special weather statement, Oct 6, 7:41 PM CDT, 0 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 6, 7:28 PM CDT	Tornado Warning	DMX	Carroll	32 min
Oct 6, 7:55 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	35 min
Oct 6, 9:42 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton	33 min
Oct 6, 9:42 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison	33 min
Oct 6, 9:52 PM CDT	Severe Thunderstorm Warning	DMX	Wright	38 min
Oct 6, 9:59 PM CDT	Severe Thunderstorm Warning	DMX	Hancock	31 min
Oct 6, 10:09 PM CDT	Severe Thunderstorm Warning	DMX	Winnebago	33 min
Oct 6, 10:09 PM CDT	Severe Thunderstorm Warning	DMX	Worth	51 min
Oct 6, 10:12 PM CDT	Severe Thunderstorm Warning	DMX	Story	33 min
Oct 6, 10:24 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Wright	81 min
Oct 6, 10:35 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	25 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1994 Every 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.