Alert archive / Nebraska / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 71, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at May 27, 2013, 1:53 AM CDT for 5 counties in Nebraska; Harrison County, Monona County, Pottawattamie County, Iowa. It was in force for 37 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
- May 27, 2013, 1:53 AM CDT (06:53 UTC)
- Expired
- May 27, 2013, 2:30 AM CDT
- In force
- 37 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Harrison County, IA, Monona County, IA, Pottawattamie County, IA, Burt County, NE, Douglas County, NE, Sarpy County, NE, Saunders County, NE, Washington County, NE
The radar
The Omaha radar (KOAX), 31 km from the middle of the area, began a volume at 06:56 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 |
|---|---|---|---|
| May 26, 11:03 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 6.9 hours before the alert went out and 31 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
- 3377 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 966 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 272 m²/s²
- Significant tornado parameter
- 3.3
- Supercell composite
- 16.4
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 May 27, 12:06 AM CDT, 1 hour 47 minutes earlier.
Area forecast discussion, May 27, 12:06 AM CDT, 1 hour 47 minutes before
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</html>Hazardous weather outlook, May 26, 11:07 PM CDT, 2 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1107 PM CDT SUN MAY 26 2013 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-271815- MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT- PAGE-KNOX-CEDAR-THURSTON-ANTELOPE-PIERCE-WAYNE-BOONE-MADISON- STANTON-CUMING-BURT-PLATTE-COLFAX-DODGE-WASHINGTON-BUTLER- SAUNDERS-DOUGLAS-SARPY-SEWARD-LANCASTER-CASS-OTOE-SALINE- JEFFERSON-GAGE-JOHNSON-NEMAHA-PAWNEE-RICHARDSON- 1107 PM CDT SUN MAY 26 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MOST OF EASTERN NEBRASKA AND PARTS OF SOUTHWEST IOWA. .DAY ONE...TONIGHT AND MONDAY A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MOST OF THE AREA UNTIL 5 AM CDT. SOME ISOLATED SEVERE STORMS WITH LARGE HAIL AND DAMAGING WINDS WILL BE POSSIBLE...ESPECIALLY ACROSS NORTHEAST NEBRASKA. HEAVY RAINFALL IS LIKELY WITH ANY STORMS THAT DEVELOP TONIGHT...AND COULD CAUSE LOCALIZED FLOODING. UNSTABLE CONDITIONS WILL REMAIN ACROSS THE AREA ON MONDAY WITH A CONTINUED CHANCE OF THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SATURDAY INTERMITTENT PERIODS OF THUNDERSTORMS ARE POSSIBLE MONDAY NIGHT THROUGH WEDNESDAY...WITH SOME POTENTIAL FOR SEVERE STORMS. THESE THUNDERSTORMS WILL FAVOR THE EVENING AND OVERNIGHT HOURS WITH LOCALLY HEAVY RAIN LIKELY. BETTER CHANCES FOR SEVERE THUNDERSTORMS WILL COME THURSDAY AND FRIDAY AS STRONGER WINDS AND COOLER TEMPERATURES AT MID LEVELS OVERSPREAD THE REGION. EXACT TIMING OF THE GREATEST POTENTIAL FOR SEVERE WEATHER WILL BE OUTLINED WITH LATER OUTLOOKS. .SPOTTER INFORMATION STATEMENT... STORM SPOTTER ACTIVATION WILL PROBABLY NOT BE NEEDED OVERNIGHT... BUT PLEASE PASS ALONG ANY SEVERE WEATHER REPORTS. STORM SPOTTER ACTIVATION MAY BE REQUIRED LATE MONDAY AFTERNOON OR EVENING.
In the hours before
Local storm report, May 27, 12:40 AM CDT, 1 hour 13 minutes before
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</html>Local storm report, May 27, 12:46 AM CDT, 1 hour 7 minutes before
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</html>Local storm report, May 27, 1:13 AM CDT, 40 minutes before
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</html>Local storm report, May 27, 1:22 AM CDT, 31 minutes before
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</html>Local storm report, May 27, 1:38 AM CDT, 15 minutes before
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</html>Local storm report, May 27, 1:52 AM CDT, 1 minute 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 |
|---|---|---|---|---|
| May 26, 9:23 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 52 min |
| May 26, 10:04 PM CDT | Flash Flood Warning | OAX | Knox | 3 hr |
| May 26, 10:12 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 33 min |
| May 26, 10:47 PM CDT | Severe Thunderstorm Warning | OAX | Antelope | 43 min |
| May 26, 11:14 PM CDT | Severe Thunderstorm Warning | OAX | Antelope | 31 min |
| May 26, 11:27 PM CDT | Severe Thunderstorm Warning | OAX | Madison, Pierce | 33 min |
| May 26, 11:58 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone, Cedar, Knox, Madison, Pierce and 3 more | 32 min |
| May 27, 12:15 AM CDT | Severe Thunderstorm Warning | OAX | Cedar, Colfax, Madison, Pierce, Platte, Stanton and 1 more | 30 min |
| May 27, 12:39 AM CDT | Severe Thunderstorm Warning | OAX | Butler, Cedar, Colfax, Cuming, Dodge, Platte and 3 more | 51 min |
| May 27, 1:10 AM CDT | Severe Thunderstorm Warning | OAX | Burt, Butler, Cuming, Dodge, Saunders | 35 min |
| May 27, 1:27 AM CDT | Tornado Warning | OAX | Dodge, Douglas, Saunders, Washington | 33 min |
| May 27, 2:29 AM CDT | Severe Thunderstorm Warning | OAX | Cass, Douglas, Sarpy | 31 min |
| May 27, 3:23 AM CDT | Areal Flood Advisory | OAX | Cass, Lancaster, Otoe | 3 hr |
| May 27, 4:18 AM CDT | Special Weather Statement | OAX | Johnson, Nemaha, Pawnee, Richardson | 57 min |
| May 27, 4:52 AM CDT | Areal Flood Advisory | OAX | Gage, Johnson, Nemaha, Pawnee, Richardson | 113 min |
| May 27, 6:44 AM CDT | Special Weather Statement | OAX | Boone, Platte | 46 min |
| May 27, 6:48 AM CDT | Areal Flood Advisory | OAX | Johnson, Nemaha, Pawnee, Richardson | 3 hr |
| May 27, 9:52 AM CDT | River Flood Warning | OAX | Otoe | 4 days |
| May 27, 9:52 AM CDT | River Flood Warning | OAX | Nemaha | 5 days |
| May 27, 9:52 AM CDT | River Flood Warning | OAX | Richardson | 6 days |
| May 26, 7:18 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 27 min |
| May 26, 7:43 PM CDT | Areal Flood Advisory | OAX | Montgomery | 3 hr |
| May 27, 2:58 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Harrison, Mills, Montgomery, Pottawattamie, Shelby | 32 min |
| May 27, 3:30 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 30 min |
| May 27, 3:59 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Montgomery, Page | 46 min |
| May 27, 4:22 AM CDT | Areal Flood Advisory | OAX | Fremont, Mills, Montgomery, Page | 113 min |
| May 27, 3:24 PM CDT | Areal Flood Advisory | OAX | Shelby | 12 hr |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2013Severe Thunderstorm Warnings in Iowa, 2013Every severe thunderstorm warning in 2013
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.