Alert archive / Iowa / Tornado Warnings in 2018
Tornado Warning 57, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Oct 8, 2018, 6:36 PM CDT for Appanoose County, Iowa. It was in force for 24 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
- Oct 8, 2018, 6:36 PM CDT (23:36 UTC)
- Expired
- Oct 8, 2018, 7:00 PM CDT
- In force
- 24 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Appanoose County, IA
The radar
The Des Moines radar (KDMX), 133 km from the middle of the area, began a volume at 23:38 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 |
|---|---|---|---|
| Oct 8, 5:33 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.6 hours before the alert went out and 234 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
- 122 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 905 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 406 m²/s²
- 0-3 km storm-relative helicity
- 407 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
863
WFUS53 KDMX 082336
TORDMX
IAC007-090000-
/O.NEW.KDMX.TO.W.0057.181008T2336Z-181009T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
636 PM CDT MON OCT 8 2018
The National Weather Service in Des Moines has issued a
* Tornado Warning for...
Western Appanoose County in south central Iowa...
* Until 700 PM CDT.
* At 636 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles west of Centerville, moving northeast at 25
mph.
HAZARD...Tornado.
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 dangerous storm will be near...
Centerville around 655 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Rathbun, Mystic, Cincinnati, Sharon Bluffs State Park, Numa, Plano,
Centerville Municipal Airport, Exline and Honey Creek State Park.
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 4069 9309 4088 9297 4075 9275 4059 9290
4059 9301 4058 9302 4059 9309
TIME...MOT...LOC 2336Z 214DEG 22KT 4070 9301
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Ansorge2 follow-up statements
980
WWUS53 KDMX 082345
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
645 PM CDT MON OCT 8 2018
IAC007-090000-
/O.CON.KDMX.TO.W.0057.000000T0000Z-181009T0000Z/
Appanoose IA-
645 PM CDT MON OCT 8 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR WESTERN
APPANOOSE COUNTY...
At 645 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Centerville, moving northeast at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Centerville around 655 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Rathbun, Mystic, Cincinnati, Sharon Bluffs State Park, Numa, Plano,
Centerville Municipal Airport, Exline and Honey Creek State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4088 9297 4075 9275 4059 9290 4059 9301
4071 9308
TIME...MOT...LOC 2345Z 214DEG 22KT 4075 9297
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Ansorge328
WWUS53 KDMX 082350
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
650 PM CDT MON OCT 8 2018
IAC007-090000-
/O.CON.KDMX.TO.W.0057.000000T0000Z-181009T0000Z/
Appanoose IA-
650 PM CDT MON OCT 8 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR CENTRAL
APPANOOSE COUNTY...
At 648 PM CDT, a trained spotter reported a rotating wall cloud
south of Centerville at 6:47pm moving northeast at 25 mph.
HAZARD...Tornado.
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
central Appanoose County, including the following locations...
Rathbun, Mystic, Cincinnati, Sharon Bluffs State Park, Numa, Plano,
Centerville Municipal Airport, Exline and Honey Creek State Park.
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 4088 9297 4075 9275 4061 9288 4061 9300
4073 9307
TIME...MOT...LOC 2348Z 214DEG 22KT 4077 9295
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
AnsorgeThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 7, 10:05 PM CDT | River Flood Watch | DMX | Wright | 6 days |
| Oct 7, 10:05 PM CDT | River Flood Watch | DMX | Boone, Hamilton, Webster | 54 hr |
| Oct 7, 10:05 PM CDT | River Flood Watch | DMX | Palo Alto, Pocahontas | 24 hr |
| Oct 7, 10:05 PM CDT | River Flood Watch | DMX | Dallas, Polk | 37 hr |
| Oct 7, 10:05 PM CDT | River Flood Watch | DMX | Cerro Gordo, Floyd, Worth | 4 days |
| Oct 7, 10:05 PM CDT | River Flood Watch | DMX | Black Hawk, Bremer, Butler | 36 hr |
| Oct 8, 10:40 AM CDT | Areal Flood Warning | DMX | Appanoose, Lucas, Mahaska, Marion, Monroe, Wayne | 24 hr |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Tama | 8 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Black Hawk | 9 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Webster | 4 days |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Davis, Wapello | 91 min |
| Oct 8, 11:38 AM CDT | River Flood Warning | DMX | Humboldt | 5 days |
| Oct 8, 11:39 AM CDT | River Flood Watch | DMX | Davis, Wapello | 4 days |
| Oct 8, 6:12 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Dallas, Greene, Guthrie | 48 min |
| Oct 8, 6:14 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 46 min |
| Oct 8, 6:29 PM CDT | Tornado Warning | DMX | Boone, Dallas, Greene, Guthrie | 31 min |
| Oct 8, 6:35 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 40 min |
| Oct 8, 6:47 PM CDT | Tornado Warning | DMX | Decatur, Ringgold | 43 min |
| Oct 8, 6:55 PM CDT | Tornado Warning | DMX | Boone, Dallas, Greene | 24 min |
Nearby
Tornado Warnings in Iowa, 2018Every tornado warning in 2018Tornadoes in 2018
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.