Alert archive / Iowa / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 67, NWS Des Moines, IA

July 13, 1992Davis County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 13, 1992, 6:14 PM CDT for Davis County, Iowa. It was in force for 31 min.

The area

The counties it named.

The facts

Issued: Jul 13, 1992, 6:14 PM CDT (23:14 UTC)
Expired: Jul 13, 1992, 6:45 PM CDT
In force: 31 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Davis County, IA

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.2 hours before the alert went out and 337 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: 951 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 1094 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 328 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

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, Jul 13, 2:53 PM CDT, 3 hours 21 minutes before

IAZALL-132040-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
249 PM CDT MON JUL 13 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE SOUTHEAST THIRD OF
   IOWA UNTIL 9PM CDT...

AT 231 PM CDT...A 25 MILE WIDE BAND OF VERY STRONG THUNDERSTORMS WAS
LOCATED FROM LAMONI...IN SOUTH CENTRAL IOWA...NORTHEAST TO MANCHESTER
OR 40 MILES EAST OF WATERLOO. MOST OF THE STORMS IN THIS AREA WILL
PRODUCE VERY HEAVY RAIN AND FREQUENT DEADLY LIGHTNING. A FEW MAY
PRODUCE SMALL HAIL.

A FEW OF THESE STORMS WILL BE MOVING THROUGH THE CEDAR RAPIDS AREA BY
315 PM. THESE STORMS WILL CAUSE STREET FLOODING AND SMALL RIVER AND
STREAMS WILL FILL UP QUICKLY.

THESE STORMS WERE PART OF A MUCH LARGER AREA OF SHOWERS AND SCATTERED
THUNDERSTORMS THAT EXTENDED FROM SOUTHWEST INTO NORTHEAST IOWA. THE
SHOWERS AND STORMS WERE LOCATED ALONG AND ABOUT 70 MILES EITHER SIDE
OF A LINE FROM BEDFORD...OR 70 MILES SOUTHWEST OF DES MOINES NORTHEAST
TO DECORAH.

THE SHOWERS AND STORMS WERE MOVING EAST NORTHEAST AT 35 TO 40 MILES AN
HOUR.

BARLOW

Special weather statement, Jul 13, 3:54 PM CDT, 2 hours 20 minutes before

IAZALL-132140-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
340 PM CDT MON JUL 13 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE SOUTHEAST THIRD OF
   IOWA UNTIL 9PM CDT...

AT 330 PM CDT...A NARROW BAND...20 MILES WIDE..OF INTENSE THUNDERSTORMS
STRETCHED FROM JUST EAST OF ALBIA TO JUST SOUTH OF DUBUQUE. THE HEAVIEST
OF THESE STORMS WERE CLUSTERED AROUND THE KALONA AND TIPTON AREAS.
MOST OF THE STORMS IN THIS AREA WILL PRODUCE VERY HEAVY RAIN...FREQUENT
DEADLY LIGHTNING AND HAIL.

THESE STORMS WILL CAUSE STREET FLOODING AND SMALL RIVERS AND STREAMS WILL
FILL UP QUICKLY.

THESE STORMS WERE PART OF A MUCH LARGER AREA OF SHOWERS AND SCATTERED
THUNDERSTORMS THAT WAS LOCATED NORTHWEST OF A LINE FROM LAMONI TO
DUBUQUE AND SOUTHEAST OF A LINE FROM FORT DODGE TO LACROSSE.

THE SHOWERS AND STORMS WERE MOVING EAST NORTHEAST AT 35 TO 40 MILES AN
HOUR.

SCOTT

Local storm report, Jul 13, 4:27 PM CDT, 1 hour 47 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
428 PM CDT MON JUL 13 1992

TIME CDT       EVENT

248 PM         3.5 INCHES RAIN PAST HOUR AT WALKER IN NORTHWEST LINN
               COUNTY REPORTED BY SHERRIFS DEPUTY.

300 PM         BARN BLOWN DOWN AT NEWELL IN EASTERN BENTON COUNTY.

305 PM         54 MPH WIND GUST AT LINN COUNTY EOC.

305 PM         MOBILE HOME DAMAGE...TREES/POWER LINES DOWN AT HIAWTHA
               ...NORTH OF CEDAR RAPIDS.

320 PM         RADIO TOWER BLOWN DOWN SOUTH OF CEDAR RAPIDS...NUMEROUS
               TREES AND POWER LINES DOWN.

355 PM         OBSERVER AT MAQUOKETA IN JACKSON COUNTY REPORTED GUST TO
               65 MPH...TORRENTIAL RAIN.

210 PM         LATE REPORT...PEA SIZE HAIL AT ATKINS IN EXTREME
               EASTERN BENTON COUNTY...A COUPLE OF BARNS BLOWN DOWN.

CORBETT

Special weather statement, Jul 13, 4:54 PM CDT, 1 hour 20 minutes before

IAZALL-132240-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
440 PM CDT MON JUL 13 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE SOUTHEAST THIRD OF
   IOWA UNTIL 9PM CDT...

AT 430 PM CDT...A NARROW BAND OF INTENSE THUNDERSTORMS STRETCHED FROM
BRIGHTON...ABOUT 25 MILES EAST OF OTTUMWA...TO WEST LIBERTY...15 MILES
SOUTH OF CEDAR RAPIDS.  THESE STORMS WILL PRODUCE VERY HEAVY RAINS...
WINDS IN EXCESS OF 50 MILES AN HOUR...FREQUENT LIGHTNING AND HAIL.

THESE STORMS WERE MOVING TO THE EAST AT 35 MILES AN HOUR...AND WILL BE
AFFECTING THE CITIES OF PRINCETON...BLUE GRASS...MUSCATINE AND MOUNT
PLEASANT BY 5 30 PM.

THESE STORMS WERE PART OF A MUCHb LARGER AREA OF SHOWERS AND THUNDER
STORMS THAT COVERED MOST OF THE EAST HALF OF IOWA...AND SCATTERED PARTS
OF WEST CENTRAL AND SOUTHWEST IOWA.

SCOTT

Special weather statement, Jul 13, 5:44 PM CDT, 30 minutes before

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Special weather statement, Jul 13, 5:54 PM CDT, 20 minutes before

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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
Jul 13, 3:11 PM CDT	Severe Thunderstorm Warning	DMX	Johnson, Linn	49 min
Jul 13, 3:52 PM CDT	Severe Thunderstorm Warning	DMX	Iowa, Johnson	53 min
Jul 13, 5:04 PM CDT	Severe Thunderstorm Warning	DMX	Washington	26 min
Jul 13, 5:53 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose	25 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1992 Every severe thunderstorm warning in 1992

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.