Alert archive / Nebraska / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 34, NWS Omaha, NE

May 23, 2008Gage County, Pawnee County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at May 23, 2008, 11:07 AM CDT for Gage County, Pawnee County, Nebraska. It was in force for 23 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: May 23, 2008, 11:07 AM CDT (16:07 UTC)
Expired: May 23, 2008, 11:30 AM CDT
In force: 23 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

Counties Gage County, NE, Pawnee County, NE

The radar

The Omaha radar (KOAX), 125 km from the middle of the area, began a volume at 16:08 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

Topeka, KS (KTOP), launched 12:00Z, 4.1 hours before the alert went out and 151 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: 810 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 199 m²/s²
0-3 km storm-relative helicity: 263 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 May 23, 3:53 AM CDT, 7 hours 14 minutes earlier.

Area forecast discussion, May 23, 3:53 AM CDT, 7 hours 14 minutes before

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Hazardous weather outlook, May 23, 6:22 AM CDT, 4 hours 45 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
622 AM CDT FRI MAY 23 2008

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-240130-
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-
622 AM CDT FRI MAY 23 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA
AND SOUTHWEST IOWA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY ACROSS MUCH OF THE AREA THIS MORNING AND
THEN AGAIN LATER TONIGHT. ANY THUNDERSTORM HAS THE POTENTIAL OF
PRODUCING HEAVY RAIN. ALTHOUGH A FEW STORMS COULD BE SEVERE WITH
LARGE HAIL AND DAMAGING WINDS...THE GREATER SEVERE WEATHER THREAT
APPEARS TO BE SOUTH THROUGH WEST OF THE REGION DURING THIS TIME PERIOD.

THE THUNDERSTORMS ARE THE RESULT OF WARM AND MOIST AIR SPREADING
NORTH OVER A WARM FRONT THAT WILL LIKELY REMAIN OVER KANSAS
TODAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

PERIODS OF THUNDERSTORMS ARE POSSIBLE DURING MUCH OF THIS TIME.
THERE IS SOME POTENTIAL FOR SEVERE THUNDERSTORMS SATURDAY THROUGH
MONDAY AS A WARM FRONT MOVES NORTH ACROSS THE REGION SATURDAY AND
SUNDAY AND THEN BECOMES RE-ESTABLISHED OVER SOUTHERN NEBRASKA LATE
SUNDAY INTO MONDAY.

.SPOTTER INFORMATION STATEMENT...

THERE IS A CHANCE THAT STORM SPOTTER ACTIVATION MAY BE REQUIRED
OVER SECTIONS OF THE REGION...MAINLY WEST OF OMAHA AND THEN MAINLY
THIS EVENING.

CHERMOK

In the hours before

Local storm report, May 23, 5:41 AM CDT, 5 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
541 AM CDT FRI MAY 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 AM     HEAVY RAIN       1 N VALLEY              41.33N 96.35W
05/23/2008  M0.92 INCH       DOUGLAS            NE   OFFICIAL NWS OBS

            RAIN ENDED PRIOR TO 530 AM.

&&

DEE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 11:26 AM CDT	Severe Thunderstorm Warning	OAX	Gage, Johnson, Nemaha, Pawnee	49 min
May 23, 12:19 PM CDT	Areal Flood Advisory	OAX	Gage, Jefferson	124 days
May 23, 3:49 PM CDT	Flash Flood Watch	OAX	Antelope, Boone, Butler, Cedar, Colfax, Cuming and 15 more	28 hr

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.