Alert archive / Nebraska / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 251, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Aug 10, 2007, 2:59 PM CDT for Thurston County, Nebraska. It was in force for 46 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 10, 2007, 2:59 PM CDT (19:59 UTC)
- Expired
- Aug 10, 2007, 3:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Omaha, NE
- Area
- Counties, with a storm outline in the text
County Thurston County, NE
The radar
The Omaha radar (KOAX), 94 km from the middle of the area, began a volume at 19:59 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 |
|---|---|---|---|
| Aug 10, 12:28 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 8.0 hours before the alert went out and 94 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
- 7 J/kg
- Mixed-layer CIN
- -572 J/kg
- Mixed-layer LCL
- 2963 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 102 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 10, 2:54 PM CDT, 5 minutes earlier.
Area forecast discussion, Aug 10, 2:54 PM CDT, 5 minutes before
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</html>Hazardous weather outlook, Aug 10, 11:47 AM CDT, 3 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1147 AM CDT FRI AUG 10 2007 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-102300- 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- 1147 AM CDT FRI AUG 10 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NEBRASKA AND SOUTHWEST IOWA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS WILL PUSH ACROSS PORTIONS OF NORTHEAST NEBRASKA THIS AFTERNOON. THE ACTIVITY SHOULD GENERALLY BE NORTH OF A LINE FROM ABOUT NELIGH TO WAYNE. SOME STORMS MAY BECOME SEVERE AND BE ACCOMPANIED BY LARGE HAIL AND DAMAGING WIND GUST. HOT AND HUMID WEATHER WILL CONTINUE TODAY WITH HIGH TEMPERATURES REACHING THE MID TO UPPER 90S AND HEAT INDEX VALUES RANGING FROM 100 TO 108 THIS AFTERNOON. THUS...A HEAT ADVISORY WILL BE IN EFFECT THROUGH SUNDAY FOR AREAS ALONG AND SOUTH OF A LINE FROM DAVID CITY NEBRASKA TO OAKLAND IOWA. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY HOT AND HUMID WEATHER WILL PREVAIL ACROSS THE AREA THROUGH EARLY NEXT WEEK. DURING THIS TIME...THE AFTERNOON HEAT INDEX MAY EXCEED 105 ON SEVERAL DAYS. THERE WILL ALSO BE A CHANCE OF THUNDERSTORMS...SOME OF WHICH MAY BE SEVERE...SUNDAY AFTERNOON AND NIGHT ACROSS PORTIONS OF NORTHEAST NEBRASKA AND WEST CENTRAL IOWA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION SHOULD NOT BE NEEDED THIS AFTERNOON OR TONIGHT. DEE
In the hours before
Local storm report, Aug 10, 12:47 PM CDT, 2 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1247 PM CDT FRI AUG 10 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1240 PM HAIL 9 WSW NIOBRARA 42.70N 98.19W
08/10/2007 E0.88 INCH KNOX NE LAW ENFORCEMENT
&&
JRBLocal storm report, Aug 10, 2:31 PM CDT, 28 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 9, 8:23 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox | 52 min |
| Aug 9, 9:15 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone | 30 min |
| Aug 9, 9:37 PM CDT | Severe Thunderstorm Warning | OAX | Madison, Pierce | 23 min |
| Aug 9, 9:44 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone | 31 min |
| Aug 9, 9:51 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Knox | 39 min |
| Aug 9, 10:00 PM CDT | Severe Thunderstorm Warning | OAX | Madison, Pierce | 30 min |
| Aug 9, 10:08 PM CDT | Severe Thunderstorm Warning | OAX | Platte | 52 min |
| Aug 9, 10:29 PM CDT | Severe Thunderstorm Warning | OAX | Madison, Stanton | 46 min |
| Aug 9, 10:37 PM CDT | Severe Thunderstorm Warning | OAX | Wayne | 23 min |
| Aug 9, 10:48 PM CDT | Severe Thunderstorm Warning | OAX | Cuming, Thurston | 42 min |
| Aug 9, 10:52 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Platte | 38 min |
| Aug 9, 11:22 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Dodge, Saunders | 38 min |
| Aug 9, 11:31 PM CDT | Severe Thunderstorm Warning | OAX | Burt | 44 min |
| Aug 10, 1:16 AM CDT | Severe Thunderstorm Warning | OAX | Antelope | 44 min |
| Aug 10, 1:53 AM CDT | Severe Thunderstorm Warning | OAX | Antelope | 37 min |
| Aug 10, 2:02 AM CDT | Severe Thunderstorm Warning | OAX | Otoe | 25 min |
| Aug 10, 2:28 AM CDT | Severe Thunderstorm Warning | OAX | Antelope | 32 min |
| Aug 10, 4:16 AM CDT | Heat Advisory | OAX | Butler, Cass, Douglas, Gage, Jefferson, Johnson and 9 more | 63 hr |
| Aug 10, 12:22 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 38 min |
| Aug 10, 12:50 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 55 min |
| Aug 10, 12:57 PM CDT | Tornado Warning | OAX | Knox | 33 min |
| Aug 10, 1:17 PM CDT | Tornado Warning | OAX | Pierce | 58 min |
| Aug 10, 2:05 PM CDT | Severe Thunderstorm Warning | OAX | Wayne | 55 min |
| Aug 9, 11:24 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 51 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.