Alert archive / Iowa / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 167, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Aug 2, 2015, 6:29 PM CDT for Mills County, Iowa. It was in force for 61 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 2, 2015, 6:29 PM CDT (23:29 UTC)
- Expired
- Aug 2, 2015, 7:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Mills County, IA
The radar
The Omaha radar (KOAX), 70 km from the middle of the area, began a volume at 23:29 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, 11.5 hours before the alert went out and 70 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
- 1593 J/kg
- Mixed-layer CIN
- -188 J/kg
- Mixed-layer LCL
- 1258 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 170 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
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 2, 6:17 PM CDT, 12 minutes earlier.
Area forecast discussion, Aug 2, 6:17 PM CDT, 12 minutes before
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</html>Hazardous weather outlook, Aug 2, 4:15 PM CDT, 2 hours 14 minutes before
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</html>In the hours before
Special weather statement, Aug 2, 6:25 PM CDT, 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA 625 PM CDT SUN AUG 2 2015 IAZ069-079-090-030015- FREMONT IA-MILLS IA-POTTAWATTAMIE IA- 625 PM CDT SUN AUG 2 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN POTTAWATTAMIE...CENTRAL MILLS AND NORTHWESTERN FREMONT COUNTIES UNTIL 715 PM CDT... AT 625 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR GLENWOOD...OR 19 MILES SOUTHEAST OF OMAHA...MOVING SOUTHEAST AT 10 MPH. NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... GLENWOOD...MALVERN...TABOR...SILVER CITY AND HASTINGS. THIS INCLUDES HIGHWAY 34 IN IOWA BETWEEN MILE MARKERS 9 AND 20. LAT...LON 4115 9580 4116 9557 4091 9539 4090 9570 TIME...MOT...LOC 2325Z 321DEG 8KT 4112 9570 ZAPOTOCNY
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 2:39 AM CDT | Special Weather Statement | OAX | Dodge | 51 min |
| Aug 2, 2:50 AM CDT | Severe Thunderstorm Warning | OAX | Burt, Dodge, Washington | 25 min |
| Aug 2, 6:31 PM CDT | Severe Thunderstorm Warning | OAX | Butler | 59 min |
| Aug 2, 3:39 AM CDT | Special Weather Statement | OAX | Harrison | 51 min |
| Aug 2, 4:04 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 26 min |
| Aug 2, 4:26 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 34 min |
| Aug 2, 4:30 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 45 min |
| Aug 2, 8:09 AM CDT | Special Weather Statement | OAX | Fremont | 51 min |
| Aug 2, 6:11 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 49 min |
| Aug 2, 6:25 PM CDT | Special Weather Statement | OAX | Mills | 50 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2015Every severe thunderstorm warning in 2015
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.