Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 303, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Aug 12, 2011, 5:26 AM CDT for Boone County, Platte County, Nebraska. It was in force for 24 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
- Aug 12, 2011, 5:26 AM CDT (10:26 UTC)
- Expired
- Aug 12, 2011, 5:50 AM CDT
- In force
- 24 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Boone County, NE, Platte County, NE
The radar
The Omaha radar (KOAX), 124 km from the middle of the area, began a volume at 10:30 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 00:00Z, 10.4 hours before the alert went out and 124 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
- 417 J/kg
- Mixed-layer CIN
- -214 J/kg
- Mixed-layer LCL
- 1393 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 110 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 Aug 12, 3:59 AM CDT, 1 hour 27 minutes earlier.
Area forecast discussion, Aug 12, 3:59 AM CDT, 1 hour 27 minutes before
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</html>Hazardous weather outlook, Aug 12, 4:45 AM CDT, 41 minutes before
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Special weather statement, Aug 12, 12:21 AM CDT, 5 hours 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 1221 AM CDT FRI AUG 12 2011 NEZ065-066-078-089-120600- GAGE NE-LANCASTER NE-SALINE NE-SEWARD NE- 1221 AM CDT FRI AUG 12 2011 ...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN SEWARD...EASTERN SALINE...LANCASTER AND NORTHERN GAGE COUNTIES UNTIL 100 AM CDT... AT 1216 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 9 MILES EAST OF GARLAND TO BEAVER CROSSING...AND MOVING SOUTHEAST AT 25 MPH. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE... LINCOLN... MILFORD... CRETE... HICKMAN... WILBER... HALLAM... PAWNEE STATE RECREATION AREA... BLUE RIVER STATE RECREATION AREA... CONESTOGA STATE RECREATION AREA... DENTON... BLUESTEM STATE RECREATION AREA... CHERMOK
Special weather statement, Aug 12, 12:46 AM CDT, 4 hours 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 1246 AM CDT FRI AUG 12 2011 NEZ066-068-078-089>091-120630- GAGE NE-JOHNSON NE-LANCASTER NE-NEMAHA NE-OTOE NE-SALINE NE- 1246 AM CDT FRI AUG 12 2011 ...SPECIAL WEATHER STATEMENT FOR SALINE...OTOE...NORTHWESTERN NEMAHA...SOUTHERN LANCASTER...NORTHERN JOHNSON AND NORTHERN GAGE COUNTIES UNTIL 130 AM CDT... AT 1244 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM AVOCA TO UNADILLA TO FRIEND...AND MOVING SOUTHEAST AT 35 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE... CRETE... HICKMAN... SYRACUSE... HALLAM... FIRTH... NEBRASKA CITY... WILBER... WESTERN... CLATONIA... STERLING... PICKRELL... JOHNSON... TECUMSEH... CHERMOK
Local storm report, Aug 12, 2:00 AM CDT, 3 hours 26 minutes before
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</html>Special weather statement, Aug 12, 2:09 AM CDT, 3 hours 17 minutes before
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</html>Local storm report, Aug 12, 2:43 AM CDT, 2 hours 43 minutes before
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</html>Special weather statement, Aug 12, 5:14 AM CDT, 12 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 |
|---|---|---|---|---|
| Aug 11, 8:03 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Knox | 42 min |
| Aug 11, 8:46 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Cedar, Knox, Pierce, Wayne | 44 min |
| Aug 12, 1:06 AM CDT | Severe Thunderstorm Warning | OAX | Johnson, Nemaha, Otoe, Pawnee, Richardson | 39 min |
| Aug 12, 1:44 AM CDT | Severe Thunderstorm Warning | OAX | Nemaha, Richardson | 46 min |
| Aug 12, 4:29 AM CDT | Severe Thunderstorm Warning | OAX | Boone, Madison, Platte | 46 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2011Every severe thunderstorm warning in 2011
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.