Alert archive / Iowa / Tornado Warnings in 2018
Tornado Warning 72, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Oct 9, 2018, 6:11 PM CDT for Adair County, Dallas County, Guthrie County, Iowa. It was in force for 49 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 9, 2018, 6:11 PM CDT (23:11 UTC)
- Expired
- Oct 9, 2018, 7:00 PM CDT
- In force
- 49 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 0.75 in
Counties Adair County, IA, Dallas County, IA, Guthrie County, IA
The radar
The Des Moines radar (KDMX), 54 km from the middle of the area, began a volume at 23:16 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 9, 1:46 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.2 hours before the alert went out and 171 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 592 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
648
WFUS53 KDMX 092311
TORDMX
IAC001-049-077-100000-
/O.NEW.KDMX.TO.W.0072.181009T2311Z-181010T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
611 PM CDT TUE OCT 9 2018
The National Weather Service in Des Moines has issued a
* Tornado Warning for...
Eastern Guthrie County in west central Iowa...
Northeastern Adair County in southwestern Iowa...
Northwestern Dallas County in central Iowa...
* Until 700 PM CDT.
* At 610 PM CDT, a confirmed tornado was located over Stuart, or 14
miles northeast of Greenfield, moving north at 40 mph.
HAZARD...Damaging tornado.
SOURCE...Law enforcement confirmed tornado.
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.
* The tornado will be near...
Guthrie Center and Panora around 630 PM CDT.
Lake Panorama around 635 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Diamondhead Lake, Menlo, Linden, Yale, Jamaica, Springbrook State
Park, Lakin Slough Game Management Area and Bagley.
This includes Interstate 80 between mile markers 85 and 96.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. 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 4148 9425 4148 9447 4184 9459 4186 9426
TIME...MOT...LOC 2310Z 175DEG 37KT 4149 9434
TORNADO...OBSERVED
HAIL...<.75IN
$$
Donavon3 follow-up statements
385
WWUS53 KDMX 092333
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
633 PM CDT TUE OCT 9 2018
IAC001-092341-
/O.CAN.KDMX.TO.W.0072.000000T0000Z-181010T0000Z/
Adair IA-
633 PM CDT TUE OCT 9 2018
...THE TORNADO WARNING FOR NORTHEASTERN ADAIR COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 900 PM CDT for central Iowa.
LAT...LON 4159 9427 4159 9448 4184 9459 4186 9426
TIME...MOT...LOC 2331Z 174DEG 38KT 4169 9435
$$
IAC049-077-100000-
/O.CON.KDMX.TO.W.0072.000000T0000Z-181010T0000Z/
Guthrie IA-Dallas IA-
633 PM CDT TUE OCT 9 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHEASTERN GUTHRIE AND NORTHWESTERN DALLAS COUNTIES...
At 631 PM CDT, a confirmed tornado was located over Panora, or 7
miles east of Guthrie Center, moving north at 45 mph.
HAZARD...Damaging tornado.
SOURCE...Law enforcement confirmed tornado.
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 tornado will be near...
Lake Panorama around 640 PM CDT.
Other locations impacted by this tornadic thunderstorm include Yale,
Jamaica, Springbrook State Park, Lakin Slough Game Management Area,
Bagley and Linden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. 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 4159 9427 4159 9448 4184 9459 4186 9426
TIME...MOT...LOC 2331Z 174DEG 38KT 4169 9435
TORNADO...OBSERVED
HAIL...<.75IN
$$
Donavon693
WWUS53 KDMX 092345
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
645 PM CDT TUE OCT 9 2018
IAC049-077-100000-
/O.CON.KDMX.TO.W.0072.000000T0000Z-181010T0000Z/
Guthrie IA-Dallas IA-
645 PM CDT TUE OCT 9 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHEASTERN GUTHRIE AND NORTHWESTERN DALLAS COUNTIES...
At 644 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lake Panorama, or 11 miles northeast of Guthrie
Center, moving north at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
northeastern Guthrie and northwestern Dallas Counties, including the
following locations... Yale, Jamaica, Springbrook State Park, Lakin
Slough Game Management Area and Bagley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4169 9427 4170 9446 4184 9452 4186 9426
TIME...MOT...LOC 2344Z 175DEG 33KT 4181 9436
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Donavon042
WWUS53 KDMX 092352
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
652 PM CDT TUE OCT 9 2018
IAC049-077-100001-
/O.EXP.KDMX.TO.W.0072.000000T0000Z-181010T0000Z/
Guthrie IA-Dallas IA-
652 PM CDT TUE OCT 9 2018
...THE TORNADO WARNING FOR NORTHEASTERN GUTHRIE AND NORTHWESTERN
DALLAS COUNTIES WILL EXPIRE AT 700 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 900 PM CDT for central Iowa.
LAT...LON 4169 9427 4170 9446 4184 9452 4186 9426
TIME...MOT...LOC 2351Z 175DEG 37KT 4187 9437
$$
DonavonThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 8, 7:11 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 34 min |
| Oct 8, 7:23 PM CDT | Tornado Warning | DMX | Clarke, Decatur | 37 min |
| Oct 8, 7:59 PM CDT | Tornado Warning | DMX | Clarke, Lucas, Warren | 31 min |
| Oct 8, 9:54 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 21 min |
| Oct 8, 10:03 PM CDT | Tornado Warning | DMX | Poweshiek | 15 min |
| Oct 8, 10:26 PM CDT | River Flood Warning | DMX | Polk | 7 days |
| Oct 8, 10:26 PM CDT | River Flood Warning | DMX | Polk | 7 days |
| Oct 8, 10:31 PM CDT | River Flood Watch | DMX | Decatur | 3 hr |
| Oct 9, 12:58 AM CDT | River Flood Warning | DMX | Decatur | 4 days |
| Oct 9, 1:48 AM CDT | Areal Flood Warning | DMX | Clarke, Decatur, Jasper, Lucas, Mahaska, Marion and 6 more | 24 hr |
| Oct 9, 2:49 AM CDT | River Flood Warning | DMX | Polk, Story | 3 days |
| Oct 9, 6:39 AM CDT | River Flood Warning | DMX | Marshall | 7 days |
| Oct 9, 6:39 AM CDT | River Flood Warning | DMX | Black Hawk | 6 days |
| Oct 9, 6:39 AM CDT | River Flood Warning | DMX | Dallas, Greene | 5 days |
| Oct 9, 10:20 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 35 hr |
| Oct 9, 10:20 AM CDT | River Flood Warning | DMX | Lucas, Wayne | 64 hr |
| Oct 9, 11:33 AM CDT | River Flood Warning | DMX | Dallas, Polk | 6 days |
| Oct 9, 12:38 PM CDT | River Flood Watch | DMX | Davis, Wapello | 10 hr |
| Oct 9, 2:16 PM CDT | Tornado Warning | DMX | Mahaska, Marion, Monroe | 29 min |
| Oct 9, 3:22 PM CDT | River Flood Warning | DMX | Story | 7 hr |
| Oct 9, 3:22 PM CDT | River Flood Warning | DMX | Story | 20 hr |
| Oct 9, 3:32 PM CDT | Tornado Warning | DMX | Appanoose, Monroe | 43 min |
| Oct 9, 3:42 PM CDT | Tornado Warning | DMX | Mahaska, Marion, Monroe | 22 min |
| Oct 9, 4:21 PM CDT | Tornado Warning | DMX | Poweshiek, Tama | 24 min |
| Oct 9, 4:28 PM CDT | Tornado Warning | DMX | Ringgold, Taylor | 47 min |
| Oct 9, 4:47 PM CDT | River Flood Watch | DMX | Jasper, Marion, Polk | 29 hr |
| Oct 9, 4:58 PM CDT | Tornado Warning | DMX | Tama | 32 min |
| Oct 9, 4:59 PM CDT | Tornado Warning | DMX | Jasper, Poweshiek | 31 min |
| Oct 9, 5:13 PM CDT | Tornado Warning | DMX | Adair, Adams, Union | 32 min |
| Oct 9, 5:44 PM CDT | Tornado Warning | DMX | Adair | 46 min |
| Oct 9, 6:30 PM CDT | Tornado Warning | DMX | Polk, Warren | 30 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.