Alert archive / Nebraska / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 182, NWS Omaha, NE

June 11, 2008Saunders County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 11, 2008, 4:32 PM CDT for Saunders County, Nebraska. It was in force for 43 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 11, 2008, 4:32 PM CDT (21:32 UTC)
Expired: Jun 11, 2008, 5:15 PM CDT
In force: 43 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

County Saunders County, NE

The radar

The Omaha radar (KOAX), 25 km from the middle of the area, began a volume at 21:33 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 11, 2:52 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.5 hours before the alert went out and 25 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: 1784 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 818 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 548 m²/s²
0-3 km storm-relative helicity: 862 m²/s²
Significant tornado parameter: 4.9
Supercell composite: 43.9

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 Jun 11, 6:59 AM CDT, 9 hours 33 minutes earlier.

Area forecast discussion, Jun 11, 6:59 AM CDT, 9 hours 33 minutes before

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Hazardous weather outlook, Jun 11, 1:21 PM CDT, 3 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
121 PM CDT WED JUN 11 2008

IAZ043-055-056-069-079-080-090-091-NEZ015-032>034-042>045-050>053-
065>068-078-088>093-120830-
MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-
PAGE-THURSTON-STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-
BUTLER-SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE-
JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON-
121 PM CDT WED JUN 11 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

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF
THE OUTLOOK AREA...BEGINNING LATE THIS AFTERNOON AND EVENING.
THUNDERSTORMS WILL BE CAPABLE OF PRODUCING VERY LARGE
HAIL...DAMAGING WINDS AS WELL AS LONG TRACK TORNADOES. ANY
THUNDERSTORM ALSO HAS THE POTENTIAL TO PRODUCE VERY HEAVY RAIN.

A COLD FRONT WILL CONTINUE TO MOVE EAST ACROSS EASTERN NEBRASKA.
AS TEMPERATURES WARM INTO THE 80S LATE THIS AFTERNOON...THE
COMBINATION OF THESE WARM TEMPERATURES AND DEWPOINTS OF 65 TO 70
DEGREES WILL CREATE HIGH INSTABILITY. IN ADDITION...WIND SHEAR
WILL INCREASE THROUGH THE AFTERNOON...SETTING THE STAGE FOR
SUPERCELL STORMS TO FORM BY LATE THIS AFTERNOON IN THE WARM
SECTOR. SEVERE STORMS ARE EXPECTED TO INITIATE ALONG THE COLD
FRONT...AROUND 5 PM...AND MOVE EAST INTO WESTERN IOWA THIS
EVENING. STORMS ARE EXPECTED TO RAPIDLY BECOME SEVERE AND LONG
TRACK TORNADOES ARE NOT OUT OF THE QUESTION. EVENTUALLY...SUPERCELL STORMS
MAY CLUSTER INTO A SQUALL LINE AS THEY MOVE INTO CENTRAL IOWA. THE
CHANCE FOR SEVERE STORMS WILL CONTINUE WELL INTO THE EVENING...BUT
HEAVY RAIN WILL BECOME INCREASINGLY LIKELY BY LATE EVENING AND
OVERNIGHT.

FLOODING CONTINUES ON SEVERAL RIVERS AND STREAMS FROM RECENT
HEAVY RAIN. CHECK THE LATEST FLOOD WARNINGS OR STATEMENTS FOR
DETAILS REGARDING FLOODING. IN ADDITION...A FLASH FLOOD WATCH HAS
BEEN POSTED FOR THE AREA UNTIL THURSDAY MORNING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THUNDERSTORMS MAY LINGER INTO THURSDAY AND THURSDAY NIGHT IN
SOUTHEAST NEBRASKA AND SOUTHWEST IOWA. IT APPEARS THE MAIN THREAT
OF SEVERE STORMS DURING THAT TIME WILL BE SOUTHEAST OF THE REGION.

THUNDERSTORMS ARE AGAIN POSSIBLE SUNDAY AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD PREPARE FOR ACTIVATION BY LATE AFTERNOON.

NEZ011-012-016>018-030-031-120830-
KNOX-CEDAR-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON-
121 PM CDT WED JUN 11 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
NEBRASKA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE REGION...MAINLY LATE THIS
AFTERNOON THROUGH LATE EVENING. THE STORMS MAY BE SEVERE WITH
LARGE HAIL...DAMAGING WINDS AND EVEN A TORNADO OR TWO POSSIBLE.
ANY STORM COULD ALSO PRODUCE AREAS OF HEAVY RAIN. THE STRONGER
THUNDERSTORMS AND HEAVIEST RAIN THREAT APPEARS THAT IT WILL SHIFT
SOUTHEAST OF THE REGION BY EARLY TO MID EVENING.

A COLD FRONT WILL CONTINUE TO MOVE INTO EASTERN NEBRASKA. VERY
WARM AND MOIST AIR AHEAD OF THE FRONT WILL BRING HIGH INSTABILITY
LATE THIS AFTERNOON. WIND SHEAR WILL ALSO INCREASE THROUGH THE
AFTERNOON...SETTING THE STAGE FOR SUPERCELL STORMS TO FORM. STORMS
ARE EXPECTED TO BECOME RAPIDLY SEVERE.

FLOODING CONTINUES ON SEVERAL RIVERS AND STREAMS FROM RECENT
HEAVY RAIN. CHECK THE LATEST FLOOD WARNINGS OR STATEMENTS FOR
DETAILS REGARDING FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS THURSDAY. IF
THEY DEVELOP...THEY COULD PRODUCE SMALL HAIL AND GUSTY WINDS.

THUNDERSTORMS ARE AGAIN POSSIBLE SUNDAY AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION WILL LIKELY BE NEEDED BY MID AFTERNOON
OVER MUCH OF THE AREA.

GRIFFIS

In the hours before

Local storm report, Jun 11, 11:06 AM CDT, 5 hours 26 minutes before

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Local storm report, Jun 11, 11:32 AM CDT, 5 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1132 AM CDT WED JUN 11 2008

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

0445 AM     HAIL             6 E HARTINGTON          42.62N 97.15W
06/11/2008  E1.00 INCH       CEDAR              NE   PUBLIC

&&

LANDSVORK

Local storm report, Jun 11, 11:33 AM CDT, 4 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1133 AM CDT WED JUN 11 2008

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

0325 AM     HAIL             LOUISVILLE              41.00N 96.16W
06/11/2008  E0.75 INCH       CASS               NE   TRAINED SPOTTER

            NEAR THE INTERSECTION OF 120TH AND CHURCH

0335 AM     HAIL             BELLEVUE                41.16N 95.92W
06/11/2008  E1.00 INCH       SARPY              NE   PUBLIC

            NEAR 36TH AND HIGHWAY 370.

0340 AM     HAIL             OMAHA                   41.26N 96.01W
06/11/2008  M0.50 INCH       DOUGLAS            NE   NWS EMPLOYEE

            156TH AND BLONDO

0340 AM     HAIL             PAPILLION               41.16N 96.04W
06/11/2008  E1.00 INCH       SARPY              NE   TRAINED SPOTTER

0343 AM     HAIL             OMAHA                   41.26N 96.01W
06/11/2008  E1.00 INCH       DOUGLAS            NE   LAW ENFORCEMENT

            NEAR THE INTERSECTION OF MAPLE ST. AND 156TH.

0345 AM     HAIL             FORT CALHOUN            41.46N 96.03W
06/11/2008  E0.75 INCH       WASHINGTON         NE   LAW ENFORCEMENT

0430 AM     HAIL             LYONS                   41.94N 96.47W
06/11/2008  E0.75 INCH       BURT               NE   PUBLIC

0445 AM     HAIL             6 E HARTINGTON          42.62N 97.15W
06/11/2008  E1.00 INCH       CEDAR              NE   PUBLIC

0500 AM     TSTM WND DMG     ONAWA                   42.03N 96.09W
06/11/2008                   MONONA             IA   PUBLIC

            2 FOOT DIAMETER TREES BLOWN DOWN, A FEW POWER LINES DOWN.

0630 AM     HAIL             3 W DEFIANCE            41.83N 95.40W
06/11/2008  E0.75 INCH       SHELBY             IA   PUBLIC

&&

LANDSVORK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 2:34 AM CDT	Severe Thunderstorm Warning	OAX	Johnson	41 min
Jun 11, 2:50 AM CDT	Severe Thunderstorm Warning	OAX	Colfax, Platte, Stanton	40 min
Jun 11, 2:59 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	46 min
Jun 11, 3:26 AM CDT	Severe Thunderstorm Warning	OAX	Colfax, Dodge	49 min
Jun 11, 3:37 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	38 min
Jun 11, 3:43 AM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy, Washington	47 min
Jun 11, 4:17 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Dodge, Washington	43 min
Jun 11, 4:25 AM CDT	Severe Thunderstorm Warning	OAX	Cedar	22 min
Jun 11, 4:28 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Thurston	47 min
Jun 11, 4:44 AM CDT	Flash Flood Watch	OAX	Burt, Butler, Cass, Colfax, Cuming, Dodge and 17 more	26 hr
Jun 11, 6:26 AM CDT	Wind Advisory	OAX	Antelope, Boone, Burt, Butler, Cass, Cedar and 23 more	10 hr
Jun 11, 11:14 AM CDT	Areal Flood Warning	OAX	Platte	24 hr
Jun 11, 4:26 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Thurston	27 min
Jun 11, 5:02 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming	28 min
Jun 11, 5:25 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	50 min
Jun 11, 5:36 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Dodge, Douglas, Lancaster, Saunders, Seward and 1 more	54 min
Jun 11, 5:49 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Dodge, Washington	26 min
Jun 11, 5:56 PM CDT	Tornado Warning	OAX	Saunders	49 min
Jun 11, 6:03 PM CDT	Flash Flood Warning	OAX	Saunders	3 hr
Jun 11, 6:13 PM CDT	Severe Thunderstorm Warning	OAX	Burt	47 min
Jun 11, 6:16 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saline, Seward	59 min
Jun 11, 6:23 PM CDT	Tornado Warning	OAX	Burt	37 min
Jun 11, 6:27 PM CDT	Tornado Warning	OAX	Dodge, Douglas, Saunders, Washington	63 min
Jun 11, 6:40 PM CDT	Flash Flood Warning	OAX	Burt, Washington	3 hr
Jun 11, 6:58 PM CDT	Tornado Warning	OAX	Cass, Lancaster, Otoe, Saline, Seward	62 min
Jun 11, 5:55 AM CDT	Severe Thunderstorm Warning	OAX	Harrison, Shelby	39 min
Jun 11, 6:59 AM CDT	Flash Flood Warning	OAX	Pottawattamie	4 hr
Jun 11, 12:29 PM CDT	River Flood Warning	OAX	Harrison	21 hr
Jun 11, 6:08 PM CDT	Severe Thunderstorm Warning	OAX	Monona	37 min
Jun 11, 6:13 PM CDT	Flash Flood Warning	OAX	Monona	3 hr
Jun 11, 6:57 PM CDT	Tornado Warning	OAX	Harrison, Monona	23 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.