Alert archive / Iowa / Tornado Warnings in 2005

Tornado Warning 8, NWS Quad Cities, IA

June 8, 2005Des Moines County, Louisa County, Iowa

NWS Quad Cities, IA issued this tornado warning at Jun 8, 2005, 12:30 PM CDT for Des Moines County, Louisa County, Iowa. It was in force for 71 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 8, 2005, 12:30 PM CDT (17:30 UTC)
Expired: Jun 8, 2005, 1:41 PM CDT
In force: 71 min
Issued by: NWS Quad Cities, IA
Area: Counties, with a storm outline in the text

Counties Des Moines County, IA, Louisa County, IA

The radar

The Quad Cities radar (KDVN), 80 km from the middle of the area, began a volume at 17:31 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.

What was reported inside it

Time	Report	Where	Remark
Jun 8, 12:45 PM CDT	TORNADO 0	4 E Morning Sun, IA	BRIEF TORNADO DESTROYED THE FRAME OF A CAR DEALERSHIP THAT WAS UNDER CONSTRUCTION.
Jun 8, 12:47 PM CDT	TSTM WND GST 80	2 Wsw Oakville, IA
Jun 8, 1:11 PM CDT	TSTM WND DMG	6 Sw Mediapolis, IA	3-4 DIAMETER WHOLE TREES SNAPPED OFF ALONG H40

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 8, 12:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 5.5 hours before the alert went out and 85 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 546 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 1084 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KDVN 081730
TORDVN
IAC057-115-081830-
/O.NEW.KDVN.TO.W.0008.050608T1730Z-050608T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1230 PM CDT WED JUN 8 2005

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN DES MOINES COUNTY IN SOUTHEAST IOWA
  SOUTHERN LOUISA COUNTY IN SOUTHEAST IOWA

* UNTIL 130 PM CDT

* AT 1227 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 6 MILES SOUTHWEST OF MORNING SUN...OR ABOUT 12 MILES
  SOUTHWEST OF WAPELLO...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  MORNING SUN BY 1250 PM CDT
  7 MILES NORTHWEST OF MEDIAPOLIS BY 1255 PM CDT
  AMBER BY 105 PM CDT
  WAPELLO BY 110 PM CDT
  OAKVILLE BY 125 PM CDT

THE SAFEST PLACE TO BE IN A TORNADO IS IN A BASEMENT OR INTERIOR ROOM
OR HALLWAY ON THE LOWEST FLOOR OF A BUILDING.

LAT...LON 4116 9136 4093 9136 4097 9099 4123 9112

$$

12

1 follow-up statement

000 
WWUS53 KDVN 081841
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
138 PM CDT WED JUN 8 2005

IAC057-115-081848-
/O.EXP.KDVN.TO.W.0008.000000T0000Z-050608T1830Z/
LOUISA IA-DES MOINES IA-
138 PM CDT WED JUN 8 2005

...THE TORNADO WARNING FOR DES MOINES AND SOUTHERN LOUISA COUNTIES 
EXPIRED AT 130 PM CDT...

SEVERAL REPORTS OF FUNNEL CLOUDS AND POSSIBLE TORNADOES...AS WELL AS 
HIGH WINDS WERE REPORTED IN DES MOINES COUNTY AS THE LINE OF STORMS 
THAT PROMPTED THE WARNING BLEW THROUGH.

THE SEVERE THUNDERSTORMS THAT WERE CAPABLE OF PRODUCING TORNADOES 
HAVE MOVED OUT OF THE WARNED AREA. THEREFORE THE TORNADO WARNING HAS 
BEEN ALLOWED TO EXPIRE.

LAT...LON 4116 9136 4093 9136 4097 9099 4123 9112

$$

12

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 11:07 AM CDT	Severe Thunderstorm Warning	DVN	Jefferson, Van Buren	70 min
Jun 8, 11:49 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Washington	77 min
Jun 8, 12:05 PM CDT	Tornado Warning	DVN	Henry	40 min

Nearby

Tornado Warnings in Iowa, 2005 Every tornado warning in 2005 Tornadoes in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.