Alert archive / Iowa / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 249, NWS Omaha, NE

September 22, 2015Burt County, Nebraska; Harrison County, Monona County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Sep 22, 2015, 1:39 PM CDT for Burt County, Nebraska; Harrison County, Monona County, Iowa. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 22, 2015, 1:39 PM CDT (18:39 UTC)
Expired
Sep 22, 2015, 2:06 PM CDT
In force
27 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Harrison County, IA, Monona County, IA, Burt County, NE

The radar

The Omaha radar (KOAX), 66 km from the middle of the area, began a volume at 18:40 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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.

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 22, 12:41 PM CDT, 58 minutes earlier.

Area forecast discussion, Sep 22, 12:41 PM CDT, 58 minutes before
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Hazardous weather outlook, Sep 22, 5:02 AM CDT, 8 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
502 AM CDT TUE SEP 22 2015

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-230015-
MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-
PAGE-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON-
STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER-
SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE-
JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON-
501 AM CDT TUE SEP 22 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
IOWA...WEST CENTRAL IOWA...EAST CENTRAL NEBRASKA...NORTHEAST
NEBRASKA AND SOUTHEAST NEBRASKA.

.DAY ONE...TODAY AND TONIGHT

PATCHY DENSE FOG THIS MORNING. SPOTTY NON-SEVERE THUNDERSTORMS
POSSIBLE THIS MORNING AND THIS AFTERNOON. SCATTERED THUNDERSTORMS
TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A CHANCE OF THUNDERSTORMS...THEN THUNDERSTORMS BECOMING LIKELY
WEDNESDAY NIGHT FOR PARTS OF NORTHEAST AND EAST CENTRAL NEBRASKA
INTO WESTERN IOWA. A CHANCE OF THUNDERSTORMS THURSDAY...THEN
THUNDERSTORMS ENDING THURSDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

ZAPOTOCNY

In the hours before

Local storm report, Sep 22, 11:33 AM CDT, 2 hours 6 minutes before
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Local storm report, Sep 22, 11:46 AM CDT, 1 hour 53 minutes before
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Local storm report, Sep 22, 12:28 PM CDT, 1 hour 11 minutes before
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Local storm report, Sep 22, 12:42 PM CDT, 57 minutes before
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Special weather statement, Sep 22, 12:57 PM CDT, 42 minutes before
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Special weather statement, Sep 22, 1:12 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
112 PM CDT TUE SEP 22 2015

IAZ043-055-NEZ015-034-221900-
HARRISON IA-MONONA IA-THURSTON NE-BURT NE-
112 PM CDT TUE SEP 22 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MONONA...
NORTHWESTERN HARRISON...SOUTHEASTERN THURSTON AND NORTHEASTERN BURT
COUNTIES UNTIL 200 PM CDT...

AT 112 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5
MILES SOUTHWEST OF DECATUR...OR 38 MILES SOUTH OF SIOUX CITY...MOVING
EAST AT 15 MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
DECATUR...BLENCOE AND PELICAN POINT STATE RECREATION AREA.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 138 AND 150.
 INTERSTATE 29 BETWEEN MILE MARKERS 97 AND 109.

LAT...LON 4188 9640 4205 9635 4199 9596 4181 9606
TIME...MOT...LOC 1812Z 292DEG 14KT 4194 9631

KERN

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 22, 8:40 AM CDTSpecial Weather StatementOAXPierce35 min
Sep 22, 9:12 AM CDTSevere Thunderstorm WarningOAXPierce, Wayne33 min
Sep 22, 9:48 AM CDTSpecial Weather StatementOAXStanton42 min
Sep 22, 9:52 AM CDTSevere Thunderstorm WarningOAXMadison, Stanton, Wayne23 min
Sep 22, 10:14 AM CDTSevere Thunderstorm WarningOAXStanton, Wayne31 min
Sep 22, 10:22 AM CDTSevere Thunderstorm WarningOAXStanton, Wayne12 min
Sep 22, 10:45 AM CDTSevere Thunderstorm WarningOAXCuming, Stanton35 min
Sep 22, 11:05 AM CDTSevere Thunderstorm WarningOAXCuming25 min
Sep 22, 11:29 AM CDTSevere Thunderstorm WarningOAXBurt, Cuming, Thurston46 min
Sep 22, 12:12 PM CDTSevere Thunderstorm WarningOAXBurt, Thurston48 min
Sep 22, 12:57 PM CDTSpecial Weather StatementOAXCuming48 min
Sep 22, 1:12 PM CDTSpecial Weather StatementOAXBurt48 min
Sep 22, 1:18 PM CDTSevere Thunderstorm WarningOAXBurt, Cuming, Thurston42 min
Sep 22, 3:45 PM CDTSpecial Weather StatementOAXCass30 min
Sep 22, 4:12 PM CDTSpecial Weather StatementOAXDouglas, Washington48 min
Sep 22, 4:34 PM CDTSpecial Weather StatementOAXDouglas41 min
Sep 22, 6:58 PM CDTSpecial Weather StatementOAXNemaha47 min
Sep 22, 12:54 PM CDTSevere Thunderstorm WarningOAXHarrison, Monona36 min
Sep 22, 2:10 PM CDTSpecial Weather StatementOAXHarrison50 min
Sep 22, 2:51 PM CDTSpecial Weather StatementOAXShelby39 min
Sep 22, 3:20 PM CDTSevere Thunderstorm WarningOAXShelby25 min
Sep 22, 6:09 PM CDTSpecial Weather StatementOAXMontgomery36 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2015Severe Thunderstorm Warnings in Nebraska, 2015Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.