Alert archive / Iowa / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 4, NWS Omaha, NE

March 13, 1990Harrison County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Mar 13, 1990, 2:24 AM CST for Harrison County, Iowa. It was in force for 51 min.

The area

The counties it named.

The facts

Issued: Mar 13, 1990, 2:24 AM CST (08:24 UTC)
Expired: Mar 13, 1990, 3:15 AM CST
In force: 51 min
Issued by: NWS Omaha, NE
Area: Whole counties

County Harrison County, IA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 8.4 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3518 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 233 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, Mar 12, 10:45 PM CST, 3 hours 39 minutes before

NEZ010-015-019-020-130600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA NE
1040 PM CST MON MAR 12 1990

...SCATTERED THUNDERSTORMS WERE OVER SECTIONS OF SOUTHEAST NEBRASKA AND
SOUTHWEST IOWA...

AT 1030 PM NATIONAL WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS
MOVING INTO NEBRASKA WEST OF BEATRICE OR ABOUT 55 MILES SOUTHWEST
OF LINCOLN.  OTHER THUNDERSTORMS WERE RUMBLING OVER SOUTHEAST
POTTAWATTAMIE COUNTY OF SOUTHWEST IOWA...OR AROUND 35 MILES SOUTHEAST
OF OMAHA.  THESE THUNDERSTORMS COULD PRODUCE SOME SMALL HAIL ALONG
WITH BRIEF DOWNPOURS AND GUSTY WINDS AS THEY CONTINUE TO MOVE NORTHEAST
AT 45 MPH.

CHERMOK

Special weather statement, Mar 13, 12:35 AM CST, 1 hour 49 minutes before

NEZ010-015-019-020-IAZ012-130800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA NE
1235 AM CST TUE MAR 13 1990

...STRONG THUNDERSTORMS ACROSS SOUTHEAST NEBRASKA AND INTO SOUTHWEST
IOWA...

AT 1230 AM CST A BAND OF STRONG THUNDERSTORMS ABOUT 20 MILES WIDE WAS
LOCATED ACROSS SOUTHEAST NEBRASKA INTO EXTREME SOUTHWEST IOWA WITH THE
LEADING EDGE EXTENDING FROM JUST SOUTH OF LINCOLN EAST TO SIDNEY IOWA
OR ABOUT 40 MILES SOUTH OF DOWNTOWN

Special weather statement, Mar 13, 1:25 AM CST, 59 minutes before

NEZ-004-009-120600

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORFOLK NE
130 AM CST TUE MAR 13 1990

...THUNDERSTORMS DEVELOPING OVER NORTHEAST NEBRASKA...

AT ABOUT 1:15 AM NORFOLK RADAR INDICATED AN AREA OF STRONG
THUNDERSTORMS NEAR ALBION IN BOONE COUNTY.  THESE STORMS WERE
DEVELOPING RAPIDLY AND MOVING TO THE NORTH-NORTHEAST AT ABOUT 40 MPH.
THE STORMS WILL BE MOVING INTO THE NORFOLK...PIERCE AND NELIGH
AREAS DURING THE NEXT HOUR...AN7D MAY CONTAIN VERY HEAVY RAIN AND
SMALL HAIL.

DK

Special weather statement, Mar 13, 1:42 AM CST, 42 minutes before

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Special weather statement, Mar 13, 2:04 AM CST, 20 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 1:02 AM CST	Severe Thunderstorm Warning	OAX	Cass, Sarpy	43 min
Mar 13, 1:36 AM CST	Severe Thunderstorm Warning	OAX	Douglas	69 min
Mar 13, 2:06 AM CST	Severe Thunderstorm Warning	OAX	Sarpy	54 min
Mar 13, 8:45 AM CST	Severe Thunderstorm Warning	OAX	Dodge, Washington	30 min
Mar 13, 4:16 PM CST	Severe Thunderstorm Warning	OAX	Sarpy	59 min
Mar 13, 4:16 PM CST	Severe Thunderstorm Warning	OAX	Cass, Otoe	59 min
Mar 13, 4:46 PM CST	Severe Thunderstorm Warning	OAX	Douglas, Sarpy	44 min
Mar 13, 4:46 PM CST	Severe Thunderstorm Warning	OAX	Cass	44 min
Mar 13, 10:27 AM CST	Severe Thunderstorm Warning	OAX	Harrison	33 min
Mar 13, 1:38 PM CST	Severe Thunderstorm Warning	OAX	Shelby	20 min
Mar 13, 3:55 PM CST	Severe Thunderstorm Warning	OAX	Montgomery, Page	30 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1990 Every severe thunderstorm warning in 1990

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.