Alert archive / Iowa / Tornado Warnings in 2017
Tornado Warning 8, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Mar 6, 2017, 8:40 PM CST for 4 counties in Iowa. It was in force for 35 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
- Mar 6, 2017, 8:40 PM CST (02:40 UTC)
- Expired
- Mar 6, 2017, 9:15 PM CST
- In force
- 35 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Appanoose County, IA, Davis County, IA, Monroe County, IA, Wapello County, IA
The radar
The Des Moines radar (KDMX), 140 km from the middle of the area, began a volume at 02:40 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 |
|---|---|---|---|
| Mar 6, 1:54 PM CST | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.7 hours before the alert went out and 199 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
- 39 J/kg
- Mixed-layer CIN
- -343 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 407 m²/s²
- 0-3 km storm-relative helicity
- 489 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
749
WFUS53 KDMX 070240
TORDMX
IAC007-051-135-179-070315-
/O.NEW.KDMX.TO.W.0008.170307T0240Z-170307T0315Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
840 PM CST MON MAR 6 2017
The National Weather Service in Des Moines has issued a
* Tornado Warning for...
Southeastern Monroe County in south central Iowa...
Western Wapello County in southeastern Iowa...
Northern Davis County in southeastern Iowa...
Northeastern Appanoose County in south central Iowa...
* Until 915 PM CST.
* At 840 PM CST, a severe thunderstorm capable of producing a tornado
was located near Lake Sundown, or 7 miles northeast of Centerville,
moving northeast at 60 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
southeastern Monroe...western Wapello...northern Davis and
northeastern Appanoose Counties, including the following locations:
Lake Wapello State Park, Bloomfield Municipal Airport, Chillicothe,
Moulton, Floris, Udell, Blakesburg, Unionville and Drakesville.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4067 9274 4079 9285 4111 9251 4073 9218
TIME...MOT...LOC 0240Z 237DEG 53KT 4077 9274
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Small2 follow-up statements
274
WWUS53 KDMX 070249
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
849 PM CST MON MAR 6 2017
IAC007-135-070258-
/O.CAN.KDMX.TO.W.0008.000000T0000Z-170307T0315Z/
Monroe IA-Appanoose IA-
849 PM CST MON MAR 6 2017
...THE TORNADO WARNING FOR SOUTHEASTERN MONROE AND NORTHEASTERN
APPANOOSE COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A tornado watch remains in effect until 1000 PM CST for south central
and southeastern Iowa.
LAT...LON 4068 9264 4099 9264 4111 9251 4073 9218
TIME...MOT...LOC 0248Z 237DEG 53KT 4084 9259
$$
IAC051-179-070315-
/O.CON.KDMX.TO.W.0008.000000T0000Z-170307T0315Z/
Wapello IA-Davis IA-
849 PM CST MON MAR 6 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CST FOR WESTERN
WAPELLO AND NORTHERN DAVIS COUNTIES...
At 848 PM CST, a severe thunderstorm capable of producing a tornado
was located 7 miles east of Lake Sundown, or 11 miles northwest of
Bloomfield, moving northeast at 60 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.
Locations impacted include...
Ottumwa, Bloomfield, Blakesburg, Drakesville, Floris, Chillicothe,
Lake Wapello State Park and Bloomfield Municipal Airport.
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4068 9264 4099 9264 4111 9251 4073 9218
TIME...MOT...LOC 0248Z 237DEG 53KT 4084 9259
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Small132
WWUS53 KDMX 070309
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
909 PM CST MON MAR 6 2017
IAC051-179-070318-
/O.EXP.KDMX.TO.W.0008.000000T0000Z-170307T0315Z/
Wapello IA-Davis IA-
909 PM CST MON MAR 6 2017
...THE TORNADO WARNING FOR WESTERN WAPELLO AND NORTHERN DAVIS
COUNTIES WILL EXPIRE AT 915 PM CST...
The tornado threat has diminished and the Tornado Warning has been
cancelled. A tornado watch remains in effect until 1000 PM CST for
south central and southeastern Iowa.
LAT...LON 4068 9264 4099 9264 4111 9251 4073 9218
TIME...MOT...LOC 0308Z 237DEG 53KT 4099 9229
$$
SmallThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 6:03 PM CST | Severe Thunderstorm Warning | DMX | Adair, Boone, Cass, Dallas, Greene, Guthrie and 1 more | 42 min |
| Mar 6, 6:09 PM CST | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Wright | 51 min |
| Mar 6, 6:30 PM CST | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Madison, Polk, Story and 1 more | 45 min |
| Mar 6, 6:31 PM CST | Severe Thunderstorm Warning | DMX | Cerro Gordo | 29 min |
| Mar 6, 6:39 PM CST | Severe Thunderstorm Warning | DMX | Clarke, Union | 51 min |
| Mar 6, 7:07 PM CST | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 53 min |
| Mar 6, 7:07 PM CST | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin, Marshall | 37 min |
| Mar 6, 7:12 PM CST | Severe Thunderstorm Warning | DMX | Marion, Warren | 48 min |
| Mar 6, 7:21 PM CST | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Monroe | 54 min |
| Mar 6, 7:21 PM CST | Tornado Warning | DMX | Marion, Warren | 24 min |
| Mar 6, 7:31 PM CST | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 59 min |
| Mar 6, 7:32 PM CST | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler, Grundy | 58 min |
| Mar 6, 7:40 PM CST | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 54 min |
| Mar 6, 7:40 PM CST | Tornado Warning | DMX | Jasper, Mahaska, Marion | 22 min |
| Mar 6, 7:43 PM CST | Tornado Warning | DMX | Jasper, Poweshiek | 32 min |
| Mar 6, 7:51 PM CST | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 54 min |
| Mar 6, 7:56 PM CST | Tornado Warning | DMX | Wayne | 34 min |
| Mar 6, 8:08 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 35 min |
| Mar 6, 8:22 PM CST | Tornado Warning | DMX | Appanoose, Wayne | 23 min |
| Mar 6, 8:38 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 41 min |
| Mar 7, 4:00 AM CST | Red Flag Warning | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 14 hr |
| Mar 7, 10:40 AM CST | River Flood Warning | DMX | Black Hawk | 4 days |
Nearby
Tornado Warnings in Iowa, 2017Every tornado warning in 2017Tornadoes in 2017
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.