Alert archive / Nebraska / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 159, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jun 4, 2007, 6:02 PM CDT for Lancaster County, Nebraska. It was in force for 28 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 4, 2007, 6:02 PM CDT (23:02 UTC)
- Expired
- Jun 4, 2007, 6:30 PM CDT
- In force
- 28 min
- Issued by
- NWS Omaha, NE
- Area
- Counties, with a storm outline in the text
County Lancaster County, NE
The radar
The Omaha radar (KOAX), 65 km from the middle of the area, began a volume at 23:06 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, 11.0 hours before the alert went out and 65 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.
- Mixed-layer CAPE
- 13 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 1379 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 4, 3:56 PM CDT, 2 hours 6 minutes earlier.
Area forecast discussion, Jun 4, 3:56 PM CDT, 2 hours 6 minutes before
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</html>Hazardous weather outlook, Jun 4, 11:52 AM CDT, 6 hours 10 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1152 AM CDT MON JUN 4 2007 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-042300- ANTELOPE-BOONE-BURT-BUTLER-CASS-CEDAR-COLFAX-CUMING-DODGE-DOUGLAS- FREMONT IA-GAGE-HARRISON IA-JEFFERSON-JOHNSON-KNOX-LANCASTER-MADISON- MILLS IA-MONONA IA-MONTGOMERY IA-NEMAHA-OTOE-PAGE IA-PAWNEE-PIERCE- PLATTE-POTTAWATTAMIE IA-RICHARDSON-SALINE-SARPY-SAUNDERS-SEWARD- SHELBY IA-STANTON-THURSTON-WASHINGTON-WAYNE- 1152 AM CDT MON JUN 4 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST IOWA AND EASTERN NEBRASKA. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORM ACTIVITY DEVELOPING THIS AFTERNOON...MAINLY ALONG AND NORTH OF INTERSTATE 80. STRONG DAMAGING WINDS APPEAR TO BE THE MAIN THREAT...BUT LARGE HAIL MAY ACCOMPANY A FEW STORMS AS WELL. A WEAK FRONTAL BOUNDARY AND UPPER LEVEL DISTURBANCE MOVING SOUTH OUT OF THE NORTHERN PLAINS WILL BE THE FOCUS FOR THE THUNDERSTORM DEVELOPMENT AS DAYTIME HEATING INCREASES INSTABILITY. STORMS SHOULD DISSIPATE BY THIS EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SCATTERED THUNDERSTORMS ARE POSSIBLE AGAIN EARLY WEDNESDAY MORNING WITH HEAVY RAIN AS THE MAIN HAZARD...ESPECIALLY ACROSS SOUTHEAST NEBRASKA AND SOUTHWEST IOWA. A SIGNIFICANT SEVERE WEATHER EVENT IS BECOMING MORE LIKELY BEGINNING WEDNESDAY AFTERNOON AND EVENING ACROSS THE OUTLOOK AREA. TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE ALL A DISTINCT POSSIBILITY AS THUNDERSTORM ACTIVITY UNFOLDS. A STRONG CAP WILL BE IN PLACE THROUGHOUT THE EARLY AFTERNOON WHICH WILL INHIBIT THUNDERSTORM INITIATION TILL AFTERNOON. ONCE THIS CAP BREAKS...TORNADIC SUPERCELLS ARE QUITE POSSIBLE. STAY TUNED FOR UPDATED FORECASTS REGARDING THIS SEVERE WEATHER EVENT. .SPOTTER INFORMATION STATEMENT... STORM SPOTTERS MAY BE NEEDED THIS AFTERNOON AND EARLY EVENING. STORM SPOTTERS WILL MOST LIKELY BE NEEDED WEDNESDAY AFTERNOON AND EVENING AS WELL. DEE
In the hours before
Local storm report, Jun 4, 3:42 PM CDT, 2 hours 20 minutes before
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</html>Local storm report, Jun 4, 5:28 PM CDT, 34 minutes before
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</html>Local storm report, Jun 4, 5:45 PM CDT, 17 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 3:13 PM CDT | Severe Thunderstorm Warning | OAX | Cedar | 32 min |
| Jun 4, 3:14 PM CDT | Severe Thunderstorm Warning | OAX | Thurston | 46 min |
| Jun 4, 4:57 PM CDT | Severe Thunderstorm Warning | OAX | Saunders | 33 min |
| Jun 4, 5:21 PM CDT | Severe Thunderstorm Warning | OAX | Knox, Pierce | 39 min |
| Jun 4, 5:54 PM CDT | Severe Thunderstorm Warning | OAX | Saunders | 19 min |
| Jun 4, 6:27 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster | 22 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2007Every severe thunderstorm warning in 2007
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.