Alert archive / Iowa / Tornado Warnings in 2008

Tornado Warning 5, NWS Quad Cities, IA

April 10, 2008Clark County, Scotland County, Missouri; 7 counties in Iowa

NWS Quad Cities, IA issued this tornado warning at Apr 10, 2008, 6:05 PM CDT for Clark County, Scotland County, Missouri; 7 counties in Iowa. It was in force for 40 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
Apr 10, 2008, 6:05 PM CDT (23:05 UTC)
Expired
Apr 10, 2008, 6:45 PM CDT
In force
40 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon

Counties Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Van Buren County, IA, Washington County, IA, Clark County, MO, Scotland County, MO

The radar

The Quad Cities radar (KDVN), 116 km from the middle of the area, began a volume at 23:08 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

TimeReportWhereRemark
Apr 10, 6:25 PM CDTTORNADO 1Stockport, IATIME IS APPROXIMATE. INTENSITY RATING WAS EF-1. ESTIMATED WINDS WERE 90 MPH. PATH WAS INTERMITTENT. PATH WIDTH WAS 50 YARDS WIDE. PATH LENGTH WAS 5 MI. THE PATH EXTENDED FROM 2 MI W UTICA TO 2 MI N STOCKPORT. DAMAGE TO A COUPLE OF SHEDS ON ONE FARM. DAMAGE TO
Apr 10, 6:25 PM CDTTORNADO7 Nne Keosauqua, IAHOUSE AND 2 MACHINE SHEDS DAMAGED ON HIGHWAY 16. TIME ESTIMATED.
Apr 10, 6:38 PM CDTTORNADOStockport, IASPOTTED BY DNR OFFICER.

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.

IssuedProductOfficeLasted
Jan 7, 1:52 PM CSTTornado WatchSPC146 days
Apr 10, 4:55 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.1 hours before the alert went out and 122 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-pSkew-T log-p diagram, Davenport, at 12:00Z on 2008-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2008-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 305 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
475 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
305 m²/s²
0-3 km storm-relative helicity
419 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 102306
TORDVN
IAC057-087-101-111-115-177-183-MOC045-199-102345-
/O.NEW.KDVN.TO.W.0005.080410T2305Z-080410T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
605 PM CDT THU APR 10 2008

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN CLARK COUNTY IN NORTHEAST MISSOURI...
  NORTHEASTERN SCOTLAND COUNTY IN NORTHEAST MISSOURI...
  NORTHWESTERN DES MOINES COUNTY IN SOUTHEAST IOWA...
  HENRY COUNTY IN SOUTHEAST IOWA...
  SOUTHEASTERN JEFFERSON COUNTY IN SOUTHEAST IOWA...
  NORTHWESTERN LEE COUNTY IN SOUTHEAST IOWA...
  SOUTHWESTERN LOUISA COUNTY IN SOUTHEAST IOWA...
  VAN BUREN COUNTY IN SOUTHEAST IOWA...
  SOUTHEASTERN WASHINGTON COUNTY IN SOUTHEAST IOWA...

* UNTIL 645 PM CDT.

* AT 600 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR CANTRIL...OR 9 MILES SOUTH OF KEOSAUQUA...MOVING
  NORTHEAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  KEOSAUQUA AROUND 610 PM CDT...
  BENTONSPORT/VERNON AND BONAPARTE AROUND 615 PM CDT...
  HILLSBORO AND STOCKPORT AROUND 630 PM CDT...
  6 MILES NORTHWEST OF SALEM AROUND 640 PM CDT...
  ROME...LOCKRIDGE AND 6 MILES WEST OF MOUNT PLEASANT AROUND 645 PM
  CDT...

THIS STORM IS ALSO CAPABLE OF PRODUCING HAIL UP TO THE SIZE OF 
NICKELS.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.

LAT...LON 4130 9156 4114 9127 4052 9193 4063 9213
TIME...MOT...LOC 2305Z 215DEG 34KT 4065 9196

$$

NICHOLS
1 follow-up statement
000 
WWUS53 KDVN 102326
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
626 PM CDT THU APR 10 2008

IAC087-101-111-177-102345-
/O.CON.KDVN.TO.W.0005.000000T0000Z-080410T2345Z/
LEE IA-VAN BUREN IA-JEFFERSON IA-HENRY IA-
626 PM CDT THU APR 10 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR SOUTHERN
HENRY...SOUTHEASTERN JEFFERSON...NORTHEASTERN VAN BUREN AND
NORTHWESTERN LEE COUNTIES...

AT 625 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED APPROXIMATELY NEAR
UTICA...OR 8 MILES NORTHEAST OF KEOSAUQUA...MOVING NORTHEAST AT 42
MPH.

THE TORNADO WILL BE NEAR...
  HILLSBORO AND GLASGOW AROUND 635 PM CDT...
  LOCKRIDGE AND 6 MILES NORTHWEST OF SALEM AROUND 640 PM CDT...
  ROME...OAKLAND MILLS...6 MILES WEST OF MOUNT PLEASANT AND 7 MILES
  SOUTHEAST OF FOUR CORNERS AROUND 645 PM CDT...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.

LAT...LON 4082 9197 4107 9176 4111 9172 4111 9170
      4099 9145 4098 9145 4082 9162 4077 9166
      4068 9180
TIME...MOT...LOC 2326Z 222DEG 37KT 4081 9183

$$

NICHOLS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 11:33 AM CDTRiver Flood WarningDVNDes Moines43 days
Apr 10, 11:33 AM CDTRiver Flood WarningDVNDes Moines, Lee43 days
Apr 10, 12:07 PM CDTWind AdvisoryDVNBenton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more3 hr
Apr 10, 6:38 PM CDTTornado WarningDVNIowa, Johnson, Keokuk, Washington37 min
Apr 10, 6:47 PM CDTTornado WarningDVNDes Moines30 min

Nearby

Tornado Warnings in Iowa, 2008Tornado Warnings in Missouri, 2008Every tornado warning in 2008Tornadoes in 2008

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.