Alert archive / Iowa / Tornado Warnings in 2016
Tornado Warning 12, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Sep 21, 2016, 7:16 PM CDT for Cerro Gordo County, Iowa. It was in force for 13 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 21, 2016, 7:16 PM CDT (00:16 UTC)
- Expired
- Sep 21, 2016, 7:29 PM CDT
- In force
- 13 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
County Cerro Gordo County, IA
The radar
The Des Moines radar (KDMX), 149 km from the middle of the area, began a volume at 00:17 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
Minneapolis, MN (KMPX), launched 00:00Z, 0.3 hours before the alert went out and 212 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
- 144 J/kg
- Mixed-layer CIN
- -361 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 428 m²/s²
- 0-3 km storm-relative helicity
- 596 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 11.6
The text
As transmitted.
543
WFUS53 KDMX 220016
TORDMX
IAC033-220045-
/O.NEW.KDMX.TO.W.0012.160922T0016Z-160922T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
716 PM CDT WED SEP 21 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN CERRO GORDO COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 745 PM CDT.
* AT 716 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR ROCKWELL...OR 13 MILES SOUTHEAST OF MASON
CITY...MOVING EAST AT 20 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR.
TREE DAMAGE IS LIKELY.
* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHEASTERN CERRO GORDO COUNTY...INCLUDING THE FOLLOWING
LOCATIONS: DOUGHERTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4303 9302 4292 9302 4291 9303 4294 9317
4304 9313
TIME...MOT...LOC 0016Z 287DEG 19KT 4298 9305
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
REV1 follow-up statement
672
WWUS53 KDMX 220029
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
729 PM CDT WED SEP 21 2016
IAC033-220039-
/O.CAN.KDMX.TO.W.0012.000000T0000Z-160922T0045Z/
CERRO GORDO IA-
729 PM CDT WED SEP 21 2016
...THE TORNADO WARNING FOR SOUTHEASTERN CERRO GORDO COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN CANCELLED.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
DES MOINES .
REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
MOST OF EASTERN CERRO GORDO COUNTY UNTIL 8 PM CDT THIS EVENING.
LAT...LON 4303 9302 4292 9302 4291 9303 4294 9317
4304 9313
TIME...MOT...LOC 0028Z 287DEG 19KT 4296 9296
$$
REVThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 55 min |
| Sep 21, 7:43 PM CDT | Tornado Warning | DMX | Bremer, Butler | 47 min |
| Sep 21, 8:26 PM CDT | Special Weather Statement | DMX | Bremer | 64 min |
| Sep 21, 8:54 PM CDT | Flash Flood Warning | DMX | Bremer | 6 hr |
| Sep 21, 9:05 PM CDT | Special Weather Statement | DMX | Bremer | 40 min |
| Sep 21, 9:39 PM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 5 days |
| Sep 21, 9:40 PM CDT | River Flood Warning | DMX | Black Hawk | 8 days |
| Sep 21, 9:41 PM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 6 days |
| Sep 21, 9:50 PM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 4 days |
| Sep 21, 10:51 PM CDT | Areal Flood Warning | DMX | Cerro Gordo, Franklin, Worth | 48 hr |
| Sep 22, 3:05 AM CDT | Areal Flood Warning | DMX | Bremer | 24 hr |
| Sep 22, 4:13 AM CDT | Flash Flood Warning | DMX | Cerro Gordo, Hancock | 6 hr |
| Sep 22, 7:00 AM CDT | Flash Flood Warning | DMX | Butler | 4 hr |
| Sep 22, 10:22 AM CDT | River Flood Warning | DMX | Wright | 6 days |
| Sep 22, 11:23 AM CDT | Areal Flood Warning | DMX | Bremer, Butler | 24 hr |
Nearby
Tornado Warnings in Iowa, 2016Every tornado warning in 2016Tornadoes 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.