Alert archive / Nebraska / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 276, NWS Omaha, NE

June 20, 2008Pawnee County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 20, 2008, 7:36 PM CDT for Pawnee County, Nebraska. It was in force for 39 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: Jun 20, 2008, 7:36 PM CDT (00:36 UTC)
Expired: Jun 20, 2008, 8:15 PM CDT
In force: 39 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

County Pawnee County, NE

The radar

The Topeka radar (KTWX), 126 km from the middle of the area, began a volume at 00:36 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 Jun 20, 3:35 PM CDT, 4 hours 1 minute earlier.

Area forecast discussion, Jun 20, 3:35 PM CDT, 4 hours 1 minute before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
335 PM CDT FRI JUN 20 2008

.DISCUSSION...
FORCAST CONCERNS THROUGH THE PERIOD WILL CONTINUE TO BE UNSETTLED WX
AND TSRA.

LATEST SFC ANALYSIS HAD A WK SFC TROF FM NR CLARINDA TO WEST OF
DBQ...TSRA SEEMED TO BE FORMING IN THIS AREA OF CONVERGENCE. OTHER
TSRA WERE NR THE SFC DEWPOINT GRADIENT WEST OF ONL AND ODX...WITH
MORE SCT TSRA NR SUX. SFC DEWPOINTS WERE IN THE UPR 50S TO LOWER
60S WITH TEMPS. NW FLOW CONTINUES WITH A WEAK SHORTWAVE TROF FM MN
THROUGH NW IA AND SE SD INTO NEB. HEATING THIS AFTERNOON HAS SB
CAPE FM 1500-3000J/KG...SO THERE IS GOOD INSTABILITY...
HOWEVER...THE SHEAR PARAMETERS ARE WEAK. EXPECT ISOLD TO SCT TSRA
AGAIN THIS AFTERNOON AND THIS EVENING AND SOME ISOLD SVR WITH
LARGE HAIL AND SOME DAMAGING WINDS POSSIBLE.

SATURDAY...ANOTHER SHORTWAVE IN NW FLOW WILL BE APPROACHING AND
THIS APPEARS TO AFFECT ALL BUT THE SW PART OF THE CWA...HAVE CHC
POPS FOR THIS FEATURE DURING THE AFTERNOON AND OVERNIGHT. SFC HIGH
PRES WILL BUILD IN FOR SUNDAY AND STILL DRY FOR SUNDAY NIGHT INTO
EARLY MONDAY WITH ANOTHER SHORTWAVE MON AFTERNOON AND THE FRONTAL
PASSAGE MONDAY NIGHT AND TUESDAY...MOVING OUT TUESDAY NIGHT.
UNSETTLED PATTERN CONTINUES WITH LOW POPS WED NIGHT AND CHANCE
POPS THU INTO THU NIGHT AND FRI AS WAA AND WEAK RIPPLES IN THE NW
FLOW EXTENDS INTO THE END OF THE WEEK. HIGHS MOSTLY IN THE 80S
THROUGH THE FORECAST PD.

&&

.AVIATION...
OR TAF SITES KOMA...KLNK AND KOFK...THROUGH 21/18Z.

VFR CONDITIONS EXPECTED THROUGH THE ENTIRE PERIOD.  HAVE A CHANCE OF
SHOWERS SKIRTING KOFK FROM 20/18-21Z AND POSSIBLY SOME CONVECTION
AT KLNK FROM 20/21-01Z.  OTHERWISE...WINDS SHOULD REMAIN LIGHT
THROUGH THE DAY.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&

ZAPOTOCNY/REESE

Hazardous weather outlook, Jun 20, 5:46 PM CDT, 1 hour 50 minutes before

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In the hours before

Local storm report, Jun 20, 6:18 PM CDT, 1 hour 18 minutes before

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Local storm report, Jun 20, 6:24 PM CDT, 1 hour 12 minutes before

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Local storm report, Jun 20, 6:37 PM CDT, 59 minutes before

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Local storm report, Jun 20, 6:52 PM CDT, 44 minutes before

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Local storm report, Jun 20, 7:00 PM CDT, 36 minutes before

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Local storm report, Jun 20, 7:35 PM CDT, 1 minute 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
Jun 20, 7:19 PM CDT	Severe Thunderstorm Warning	OAX	Sarpy	26 min
Jun 20, 7:54 PM CDT	Severe Thunderstorm Warning	OAX	Saline, Seward	36 min
Jun 20, 8:41 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson, Saline	49 min
Jun 21, 2:32 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison	43 min
Jun 21, 3:13 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Boone, Madison, Platte	47 min
Jun 21, 6:32 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Knox	58 min
Jun 20, 7:05 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	40 min
Jun 20, 8:31 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	29 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; radar from the NEXRAD Level II archive.