Alert archive / Iowa / Tornado Warnings in 2007
Tornado Warning 53, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Sep 30, 2007, 6:54 PM CDT for 4 counties in Iowa. It was in force for 26 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 30, 2007, 6:54 PM CDT (23:54 UTC)
- Expired
- Sep 30, 2007, 7:20 PM CDT
- In force
- 26 min
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
Counties Jasper County, IA, Mahaska County, IA, Marion County, IA, Poweshiek County, IA
The radar
The Des Moines radar (KDMX), 80 km from the middle of the area, began a volume at 23:55 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 |
|---|---|---|---|
| Sep 30, 1:02 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.9 hours before the alert went out and 192 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
- 1947 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS53 KDMX 302354
TORDMX
IAC099-123-125-157-010030-
/O.NEW.KDMX.TO.W.0053.070930T2354Z-071001T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
654 PM CDT SUN SEP 30 2007
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN JASPER COUNTY IN CENTRAL IOWA...
SOUTHWESTERN POWESHIEK COUNTY IN CENTRAL IOWA...
NORTHWESTERN MAHASKA COUNTY IN SOUTH CENTRAL IOWA...
NORTHEASTERN MARION COUNTY IN SOUTH CENTRAL IOWA...
* UNTIL 730 PM CDT.
* AT 651 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PELLA...OR
ABOUT 37 MILES SOUTHEAST OF DES MOINES...MOVING NORTHEAST AT 45
MPH.
* THE TORNADO WILL BE NEAR...
7 MILES NORTHWEST OF NEW SHARON BY 710 PM CDT...
6 MILES NORTHWEST OF MONTEZUMA BY 725 PM CDT...
THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR...SEEK SHELTER IN A REINFORCED BUILDING.
THIS IS A SEPARATE STORM THAT MAY TRACK OVER THE SAME AREA AS THE
PREVIOUS STORM THAT PRODUCED THE LYNNVILLE TORNADO.
LAT...LON 4169 9277 4159 9277 4161 9246 4126 9293
4137 9311
TIME...MOT...LOC 2354Z 223DEG 41KT 4140 9293
$$
SMALL2 follow-up statements
000
WWUS53 KDMX 010008
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
708 PM CDT SUN SEP 30 2007
IAC125-010018-
/O.CAN.KDMX.TO.W.0053.000000T0000Z-071001T0030Z/
MARION IA-
708 PM CDT SUN SEP 30 2007
...THE TORNADO WARNING FOR NORTHEASTERN MARION COUNTY IS CANCELLED...
AT 703 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.
REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR
WESTERN IOWA.
LAT...LON 4141 9286 4143 9287 4150 9287 4151 9287
4159 9287 4169 9277 4159 9277 4161 9246
TIME...MOT...LOC 0008Z 223DEG 41KT 4154 9277
$$
IAC099-123-157-010030-
/O.CON.KDMX.TO.W.0053.000000T0000Z-071001T0030Z/
JASPER IA-POWESHIEK IA-MAHASKA IA-
708 PM CDT SUN SEP 30 2007
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
NORTHWESTERN MAHASKA...SOUTHWESTERN POWESHIEK AND SOUTHEASTERN JASPER
COUNTIES...
AT 703 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES SOUTH OF
SULLY...OR ABOUT 34 MILES WEST OF SIGOURNEY...MOVING NORTHEAST AT 45
MPH.
THE TORNADO WILL BE NEAR...
SEARSBORO BY 715 PM CDT...
7 MILES NORTHWEST OF MONTEZUMA BY 720 PM CDT...
SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.
REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.
LAT...LON 4141 9286 4143 9287 4150 9287 4151 9287
4159 9287 4169 9277 4159 9277 4161 9246
TIME...MOT...LOC 0008Z 223DEG 41KT 4154 9277
$$
SMALL000
WWUS53 KDMX 010020
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
720 PM CDT SUN SEP 30 2007
IAC099-123-157-010030-
/O.CAN.KDMX.TO.W.0053.000000T0000Z-071001T0030Z/
JASPER IA-POWESHIEK IA-MAHASKA IA-
720 PM CDT SUN SEP 30 2007
...THE TORNADO WARNING FOR NORTHWESTERN MAHASKA...SOUTHWESTERN
POWESHIEK AND SOUTHEASTERN JASPER COUNTIES IS CANCELLED...
AT 716 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.
THE TORNADO WARNING FOR CENTRAL AND NORTHERN POWESHIEK COUNTY
REMAINS IN EFFECT UNTIL 745 PM CDT.
LAT...LON 4141 9286 4143 9287 4150 9287 4151 9287
4159 9287 4169 9277 4159 9277 4161 9246
TIME...MOT...LOC 0020Z 223DEG 41KT 4164 9265
$$
SMALLThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 30, 4:29 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 31 min |
| Sep 30, 4:38 PM CDT | Severe Thunderstorm Warning | DMX | Union | 27 min |
| Sep 30, 4:43 PM CDT | High Wind Warning | DMX | Adair, Adams, Audubon, Carroll, Cass, Clarke and 8 more | 3 hr |
| Sep 30, 4:49 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Warren | 56 min |
| Sep 30, 5:21 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas | 24 min |
| Sep 30, 5:23 PM CDT | Tornado Warning | DMX | Clarke, Lucas | 24 min |
| Sep 30, 5:25 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 50 min |
| Sep 30, 5:33 PM CDT | Tornado Warning | DMX | Marion, Warren | 42 min |
| Sep 30, 6:03 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 57 min |
| Sep 30, 6:03 PM CDT | Tornado Warning | DMX | Sac | 15 min |
| Sep 30, 6:17 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac | 43 min |
| Sep 30, 6:18 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Poweshiek | 42 min |
| Sep 30, 6:21 PM CDT | Tornado Warning | DMX | Calhoun, Pocahontas, Sac | 24 min |
| Sep 30, 6:21 PM CDT | Tornado Warning | DMX | Jasper, Mahaska, Marion, Poweshiek | 39 min |
| Sep 30, 6:37 PM CDT | Tornado Warning | DMX | Poweshiek | 38 min |
| Sep 30, 6:47 PM CDT | Tornado Warning | DMX | Calhoun, Pocahontas | 15 min |
Nearby
Tornado Warnings in Iowa, 2007Every tornado warning in 2007Tornadoes in 2007
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.