Alert archive / Nebraska / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 320, NWS Omaha, NE

July 2, 2008Richardson County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jul 2, 2008, 5:38 PM CDT for Richardson County, Nebraska. It was in force for 52 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: Jul 2, 2008, 5:38 PM CDT (22:38 UTC)
Expired: Jul 2, 2008, 6:30 PM CDT
In force: 52 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

County Richardson County, NE

The radar

The Topeka radar (KTWX), 133 km from the middle of the area, began a volume at 22:38 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.6 hours before the alert went out and 144 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: 475 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 1738 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: -139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jul 2, 3:02 PM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, Jul 2, 3:02 PM CDT, 2 hours 36 minutes before

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Hazardous weather outlook, Jul 2, 12:09 PM CDT, 5 hours 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1209 PM CDT WED JUL 2 2008

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-030715-
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-
1209 PM CDT WED JUL 2 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING SOUTH
OF AN TEKAMAH TO NORFOLK TO ALBION LINE. DAMAGING WINDS AND LARGE HAIL
ARE THE PRIMARY HAZARDS WITH THESE THUNDERSTORMS. A COLD FRONT
WILL BE MOVING SOUTHWARD ACROSS THE REGION TODAY AND TONIGHT.
THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND BEHIND THE COLD
FRONT BY MID AFTERNOON AND CONTINUE INTO THE EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS ON THURSDAY SOUTH OF AN OMAHA
TO COLUMBUS LINE...AS ANOTHER UPPER LEVEL STORM SYSTEM MOVES ACROSS
THE CENTRAL PLAINS. A FEW STRONG STORMS ARE POSSIBLE. THERE IS
ALSO A CHANCE FOR THUNDERSTORMS SUNDAY THROUGH MONDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON AND
EARLY IN THE EVENING.

SMITH

In the hours before

Local storm report, Jul 2, 2:17 PM CDT, 3 hours 21 minutes before

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Local storm report, Jul 2, 2:43 PM CDT, 2 hours 55 minutes before

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Local storm report, Jul 2, 4:22 PM CDT, 1 hour 16 minutes before

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Local storm report, Jul 2, 4:26 PM CDT, 1 hour 12 minutes before

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Local storm report, Jul 2, 4:36 PM CDT, 1 hour 2 minutes before

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Local storm report, Jul 2, 5:02 PM CDT, 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 1:29 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Madison, Platte	46 min
Jul 2, 3:59 PM CDT	Severe Thunderstorm Warning	OAX	Washington	46 min
Jul 2, 4:08 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	37 min
Jul 2, 4:40 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy	36 min
Jul 2, 6:28 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	32 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2008 Every severe thunderstorm warning in 2008

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; radar from the NEXRAD Level II archive.