Alert archive / Iowa / Tornado Warnings in 1991

Tornado Warning 22, NWS Omaha, NE

June 14, 1991Harrison County, Iowa

NWS Omaha, NE issued this tornado warning at Jun 14, 1991, 8:59 PM CDT for Harrison County, Iowa. It was in force for 31 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 14, 1991, 8:59 PM CDT (01:59 UTC)
Expired
Jun 14, 1991, 9:30 PM CDT
In force
31 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Harrison County, IA

What was reported inside it

TimeReportWhereRemark
Jun 14, 9:30 PM CDTHail 1.75Harrison, IA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 2.0 hours before the alert went out and 61 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 1991-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3690 joules per kilogram.LCLEL10008507005003002001001 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 1991-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.193958Sfc1 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
3690 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1731 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
160 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 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, Jun 14, 4:15 PM CDT, 4 hours 44 minutes before
NEZ003-004-007-008-009-142215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORFOLK NE
415 PM CDT FRI JUN 14 1991

...SEVERE THUNDERSTORM WATCH FOR ALL OF NORTHEAST NEBRASKA AND PARTS
OF NORTHCENTRAL NEBRASKA UNTIL 10 PM CDT...

AT 410 PM CDT THUNDERSTORMS WERE DEVELOPING OVER PARTS OF THE REGION.
THE STRONGEST STORMS WERE IN A 25 MILE WIDE BAND THAT STETCHED FROM
ABOUT 55 MILES SOUTHWEST OF NORFOLK TO 30 MILES NORTHEAST OF NORFOLK.
THE STORMS ARE MOVING NORTHEAST AT 15 MPH.  HEAVY RAIN AND SMALL HAIL
ARE POSSIBLE WITH THESE STORMS...ALONG WITH DEADLY LIGHTNING.

PERSONS IN THE AREA SHOULD REMAIN ALERT FOR THE POSSIBLE DEVELOPMENT
OF SEVERE WEATHER THROUGH THE EVENING HOURS.  IF THREATENING WEATHER
APPROACHES OR IF A WARNING IS ISSUED YOU SHOULD SEEK SHELTER QUICKLY.

MILLER
Special weather statement, Jun 14, 6:22 PM CDT, 2 hours 37 minutes before
NEZ015-140430-

SPECIAL WEATHER STATEMENT...CORRECTION FOR TIME OF ISSUANCE
NATIONAL WEATHER SERVICE LINCOLN NE
622 PM CDT FRI JUN 14 1991

AT 615 PM AN AREA OF STRONG THUNDERSTORMS WERE LOCATED 40 MILES EAST OF
CONCORDIA KANSAS..30 MILES SOUTH OF THE NEBRASKA/KANSAS BORDER.  THESE
STORMS ARE MOVING NORTH NORTHEAST AT 15 MPH.  THIS STORM HAS PRODUCED
ONE INCH HAIL IN KANSAS.

THIS AREA OF THUNDERSTORMS SHOULD MOVE INTO SOUTHERN GAGE AND PAWNEE
COUNTIES AROUND 7 PM CDT THIS EVENING.

PEOPLE IN SOUTHERN GAGE AND PAWNEE COUNTIES SHOULD BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS.  LISTEN TO NOAA WEATHER RADIO OR NEWS MEDIA
FOR THE LATEST INFORMATION ON WATCHES AND WARNINGS.
GHG
Special weather statement, Jun 14, 6:23 PM CDT, 2 hours 36 minutes before
NEZ015-140430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN NE
622 PM CDT FRI JUN 14 1991

AT 615 PM AN AREA OF STRONG THUNDERSTORMS WERE LOCATED 40 MILES EAST OF
CONCORDIA KANSAS..30 MILES SOUTH OF THE NEBRASKA/KANSAS BORDER.  THESE
STORMS ARE MOVING NORTH NORTHEAST AT 15 MPH.  THIS STORM HAS PRODUCED
ONE INCH HAIL IN KANSAS.

THIS AREA OF THUNDERSTORMS SHOULD MOVE INTO SOUTHERN GAGE AND PAWNEE
COUNTIES AROUND 7 PM CDT THIS EVENING.

PEOPLE IN SOUTHERN GAGE AND PAWNEE COUNTIES SHOULD BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS.  LISTEN TO NOAA WEATHER RADIO OR NEWS MEDIA
FOR THE LATEST INFORMATION ON WATCHES AND WARNINGS.
GHG
Special weather statement, Jun 14, 6:50 PM CDT, 2 hours 9 minutes before
NEZ015-1402350

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN NE
645 PM CDT FRI JUN 14 1991

...SEVERE THUNDERSTORM WATCH FOR SOUTHEAST NEBRASKA UNTIL MIDNIGHT...

A SEVERE THUNDERSTORMS WATCH IS NOW IN EFFECT FOR ALL OF SOUTHEAST
NEBRASKA UNTIL MIDNIGHT TONGHT.

AT 645 PM AN AREA OF STRONG THUNDERSTORMS WERE LOCATED ON THE KANSAS/
NEBRASKA BORDER...20 MILES SOUTH OF THE BEATRICE.  THESE STORMS ARE
MOVING NORTH NORTHEAST AT 25 MPH AND INTO SOUTHERN GAGE AND SOUTHERN
PAWNEE COUNTIES.  RADAR SHOWS THEY WILL BE PRODUCING HEAVY RAIN AND
HAIL.

PEOPLE IN SOUTHERN GAGE AND PAWNEE COUNTIES SHOULD BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS.  LISTEN TO NOAA WEATHER RADIO OR NEWS
BROADCASTS FOR THE LATEST INFORMATION ON WATCHES AND WARNINGS.
FM
Special weather statement, Jun 14, 7:21 PM CDT, 1 hour 38 minutes before
NEZ004-009-150045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORFOLK NE
720 PM CDT FRI JUN 14 1991

...SEVERE THUNDERSTORM WARNING FOR PIERCE...WAYNE...NORTHERN MADISON
AND SOUTHERN CEDAR COUNTIES EXPIRED AT 715 PM CDT...

SCATTERED SHOWERS AND A FEW STRONG THUNDERSTORMS CONTINUED OVER THE
NORTHERN HALF OF NORTHEAST NEBRASKA AT 715 PM BUT NONE OF THE STORMS
SHOW SEVERE CHARACTERISTICS.  THUS...THE SEVERE THUNDERSTORMS WARNING
WHICH WAS IN EFFECT FOR PARTS OF THE AREA HAS BEEN ALLOWED TO EXPIRE.
LOWLAND AND SMALL STREAM FLOODING HAS BEEN REPORTED IN PARTS OF PIERCE
...WAYNE...NORTHERN MADISON AND SOUTHERN CEDAR COUNTIES.

A FLASH FLOOD WATCH CONTINUES FOR NORTHEAST NEBRASKA TONIGHT.  THOSE
WHO LIVE IN FLOOD PRONE AREAS OF NORTHEAST NEBRASKA SHOULD BE ALERT
FOR RAPID RISES IN SMALL STREAMS...AND HAVE A PLAN OF ACTION READY TO
PROTECT LIFE AND PROPERTY SHOULD IT BECOME NECESSARY.
>
A SEVERE THUNDERSTORM WATCH CONTINUES FOR STANTON...CUMING...COLFAX...
AND WAYNE COUNTIES OF NORTHEAST NEBRASKA UNTIL MIDNIGHT.  THIS WATCH
ALSO EXTENDS FURTHER EAST.

MILLER

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 14, 7:24 PM CDTSevere Thunderstorm WarningOAXDouglas, Washington66 min
Jun 14, 7:29 PM CDTSevere Thunderstorm WarningOAXCass, Otoe61 min
Jun 14, 8:02 PM CDTTornado WarningOAXSarpy28 min
Jun 14, 8:24 PM CDTTornado WarningOAXDouglas, Sarpy36 min
Jun 14, 9:00 PM CDTSevere Thunderstorm WarningOAXWashington60 min
Jun 14, 9:00 PM CDTSevere Thunderstorm WarningOAXDouglas, Sarpy28 min
Jun 14, 10:57 PM CDTSevere Thunderstorm WarningOAXRichardson39 min
Jun 15, 2:59 AM CDTSevere Thunderstorm WarningOAXWashington46 min
Jun 14, 8:06 PM CDTSevere Thunderstorm WarningOAXHarrison, Shelby69 min
Jun 14, 8:24 PM CDTTornado WarningOAXMills36 min
Jun 14, 9:00 PM CDTSevere Thunderstorm WarningOAXMills, Page60 min
Jun 14, 9:32 PM CDTTornado WarningOAXHarrison43 min
Jun 15, 12:09 AM CDTSevere Thunderstorm WarningOAXMontgomery16 min

Nearby

Tornado Warnings in Iowa, 1991Every tornado warning in 1991Tornadoes in 1991

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.