Alert archive / Iowa / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 252, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Sep 16, 2016, 1:15 AM CDT for 4 counties in Iowa; Cass County, Otoe County, Nebraska. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 16, 2016, 1:15 AM CDT (06:15 UTC)
- Expired
- Sep 16, 2016, 1:45 AM CDT
- In force
- 30 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Cass County, NE, Otoe County, NE
The radar
The Omaha radar (KOAX), 99 km from the middle of the area, began a volume at 06:18 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, 6.3 hours before the alert went out and 99 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
- 2247 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1154 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 17.1
The text
As transmitted.
372
WUUS53 KOAX 160615
SVROAX
IAC071-129-137-145-NEC025-131-160645-
/O.NEW.KOAX.SV.W.0252.160916T0615Z-160916T0645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
115 AM CDT FRI SEP 16 2016
THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MONTGOMERY COUNTY IN SOUTHWESTERN IOWA...
NORTHERN FREMONT COUNTY IN SOUTHWESTERN IOWA...
NORTHWESTERN PAGE COUNTY IN SOUTHWESTERN IOWA...
MILLS COUNTY IN SOUTHWESTERN IOWA...
EASTERN CASS COUNTY IN SOUTHEASTERN NEBRASKA...
NORTH CENTRAL OTOE COUNTY IN SOUTHEASTERN NEBRASKA...
* UNTIL 145 AM CDT
* AT 115 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR GLENWOOD TO NEAR UNION...MOVING EAST AT 50 MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
* LOCATIONS IMPACTED INCLUDE...
PLATTSMOUTH...RED OAK...GLENWOOD...SHENANDOAH...VILLISCA...
MALVERN...SIDNEY...ESSEX...STANTON...PACIFIC JUNCTION...MURRAY...
EMERSON...ELLIOTT...UNION...NEHAWKA...TABOR...THURMAN...RANDOLPH...
HASTINGS AND GRANT.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
HIGHWAY 34 IN IOWA BETWEEN MILE MARKERS 1 AND 48.
HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 13 AND 37.
HIGHWAY 75 IN NEBRASKA BETWEEN MILE MARKERS 57 AND 59.
INTERSTATE 29 BETWEEN MILE MARKERS 17 AND 35.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4072 9512 4077 9601 4105 9589 4116 9506
4116 9493 4106 9493
TIME...MOT...LOC 0615Z 266DEG 43KT 4104 9577 4080 9596
HAIL...<.75IN
WIND...60MPH
$$
MAYES1 follow-up statement
077
WWUS53 KOAX 160628
SVSOAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
128 AM CDT FRI SEP 16 2016
NEC131-160638-
/O.CAN.KOAX.SV.W.0252.000000T0000Z-160916T0645Z/
OTOE NE-
128 AM CDT FRI SEP 16 2016
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL OTOE COUNTY IS
CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE WARNED
AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.
LAT...LON 4072 9512 4076 9583 4106 9579 4116 9506
4116 9493 4106 9493
TIME...MOT...LOC 0628Z 272DEG 47KT 4101 9557 4077 9576
$$
IAC071-129-137-145-NEC025-160645-
/O.CON.KOAX.SV.W.0252.000000T0000Z-160916T0645Z/
MONTGOMERY IA-FREMONT IA-PAGE IA-MILLS IA-CASS NE-
128 AM CDT FRI SEP 16 2016
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT
FOR MONTGOMERY...NORTHERN FREMONT...NORTHWESTERN PAGE...MILLS AND
EASTERN CASS COUNTIES...
AT 128 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MALVERN TO 6 MILES WEST OF SIDNEY...MOVING EAST AT 55
MPH.
HAZARD...60 MPH WIND GUSTS.
SOURCE...RADAR INDICATED.
IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.
LOCATIONS IMPACTED INCLUDE...
RED OAK...GLENWOOD...SHENANDOAH...VILLISCA...MALVERN...SIDNEY...
ESSEX...STANTON...PACIFIC JUNCTION...EMERSON...ELLIOTT...TABOR...
THURMAN...RANDOLPH...HASTINGS...GRANT...YORKTOWN...IMOGENE...
COBURG AND VIKING LAKE STATE PARK.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
HIGHWAY 34 IN IOWA BETWEEN MILE MARKERS 6 AND 48.
HIGHWAY 59 IN IOWA BETWEEN MILE MARKERS 13 AND 37.
INTERSTATE 29 BETWEEN MILE MARKERS 17 AND 27.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4072 9512 4076 9583 4106 9579 4116 9506
4116 9493 4106 9493
TIME...MOT...LOC 0628Z 272DEG 47KT 4101 9557 4077 9576
HAIL...<.75IN
WIND...60MPH
$$
MAYESThe office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 7:16 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Shelby | 44 min |
| Sep 15, 7:47 PM CDT | Flash Flood Warning | OAX | Monona | 5 hr |
| Sep 15, 8:00 PM CDT | Special Weather Statement | OAX | Harrison | 30 min |
| Sep 15, 8:44 PM CDT | Flash Flood Warning | OAX | Harrison, Monona, Shelby | 5 hr |
| Sep 15, 8:49 PM CDT | Special Weather Statement | OAX | Harrison, Shelby | 41 min |
| Sep 15, 10:09 PM CDT | Flash Flood Warning | OAX | Monona | 6 hr |
| Sep 15, 10:52 PM CDT | Flash Flood Warning | OAX | Harrison, Monona | 6 hr |
| Sep 16, 12:20 AM CDT | Flash Flood Warning | OAX | Harrison | 4 hr |
| Sep 16, 12:51 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 24 min |
| Sep 16, 1:25 AM CDT | Flash Flood Warning | OAX | Harrison, Pottawattamie | 3 hr |
| Sep 16, 1:40 AM CDT | Flash Flood Warning | OAX | Harrison, Monona, Pottawattamie, Shelby | 3 hr |
| Sep 16, 1:44 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 31 min |
| Sep 16, 2:12 AM CDT | Special Weather Statement | OAX | Montgomery, Page | 48 min |
| Sep 16, 6:52 AM CDT | Areal Flood Advisory | OAX | Harrison, Monona | 6 hr |
| Sep 16, 8:45 AM CDT | River Flood Warning | OAX | Fremont | 34 hr |
| Sep 16, 8:45 AM CDT | River Flood Warning | OAX | Montgomery | 52 hr |
| Sep 16, 8:45 AM CDT | River Flood Warning | OAX | Fremont | 66 hr |
| Sep 16, 9:48 AM CDT | River Flood Warning | OAX | Mills | 4 days |
| Sep 16, 9:48 AM CDT | River Flood Warning | OAX | Fremont | 4 days |
| Sep 15, 7:57 PM CDT | Flash Flood Warning | OAX | Cuming, Stanton, Thurston, Wayne | 5 hr |
| Sep 15, 8:04 PM CDT | Special Weather Statement | OAX | Cuming, Stanton | 26 min |
| Sep 15, 8:12 PM CDT | Flash Flood Warning | OAX | Colfax, Madison, Platte, Stanton | 8 hr |
| Sep 15, 8:36 PM CDT | Special Weather Statement | OAX | Colfax | 24 min |
| Sep 15, 8:42 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Cuming, Dodge, Stanton | 21 min |
| Sep 15, 9:19 PM CDT | Special Weather Statement | OAX | Colfax | 26 min |
| Sep 15, 9:31 PM CDT | Special Weather Statement | OAX | Washington | 29 min |
| Sep 15, 9:39 PM CDT | Flash Flood Warning | OAX | Butler, Colfax, Platte | 6 hr |
| Sep 15, 10:11 PM CDT | Special Weather Statement | OAX | Colfax, Platte | 49 min |
| Sep 15, 10:23 PM CDT | River Flood Warning | OAX | Dodge | 41 hr |
| Sep 15, 10:23 PM CDT | River Flood Warning | OAX | Cuming | 37 hr |
| Sep 15, 10:23 PM CDT | River Flood Warning | OAX | Dodge | 41 hr |
| Sep 15, 10:51 PM CDT | Special Weather Statement | OAX | Butler, Jefferson, Saline, Seward | 39 min |
| Sep 15, 11:07 PM CDT | River Flood Warning | OAX | Dodge | 21 hr |
| Sep 15, 11:15 PM CDT | Flash Flood Warning | OAX | Burt, Colfax, Cuming, Dodge | 5 hr |
| Sep 15, 11:19 PM CDT | Special Weather Statement | OAX | Burt, Dodge | 41 min |
| Sep 15, 11:27 PM CDT | Special Weather Statement | OAX | Jefferson, Saline, Seward | 48 min |
| Sep 15, 11:44 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Colfax, Saunders | 46 min |
| Sep 16, 12:09 AM CDT | Special Weather Statement | OAX | Gage, Lancaster | 51 min |
| Sep 16, 12:36 AM CDT | Special Weather Statement | OAX | Cass, Sarpy | 39 min |
| Sep 16, 12:40 AM CDT | Special Weather Statement | OAX | Johnson, Nemaha, Otoe, Pawnee, Richardson | 50 min |
| Sep 16, 3:24 AM CDT | River Flood Warning | OAX | Dodge | 20 hr |
| Sep 16, 8:38 AM CDT | Areal Flood Warning | OAX | Burt, Colfax, Cuming, Dodge, Platte, Stanton | 9 hr |
| Sep 16, 9:48 AM CDT | River Flood Warning | OAX | Nemaha | 4 days |
| Sep 16, 9:48 AM CDT | River Flood Warning | OAX | Richardson | 4 days |
Nearby
Severe Thunderstorm Warnings in Iowa, 2016Severe Thunderstorm Warnings in Nebraska, 2016Every severe thunderstorm warning in 2016
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.