Alert archive / Iowa / Tornado Warnings in 2005

Tornado Warning 4, NWS Quad Cities, IA

June 4, 2005Jefferson County, Van Buren County, Iowa

NWS Quad Cities, IA issued this tornado warning at Jun 4, 2005, 9:29 PM CDT for Jefferson County, Van Buren County, Iowa. It was in force for 46 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: Jun 4, 2005, 9:29 PM CDT (02:29 UTC)
Expired: Jun 4, 2005, 10:15 PM CDT
In force: 46 min
Issued by: NWS Quad Cities, IA
Area: Counties, with a storm outline in the text

Counties Jefferson County, IA, Van Buren County, IA

The radar

The Quad Cities radar (KDVN), 138 km from the middle of the area, began a volume at 02:33 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
Jun 4, 8:15 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 2.5 hours before the alert went out and 145 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: 2060 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1369 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDVN 050230
TORDVN
IAC101-177-050315-
/O.NEW.KDVN.TO.W.0004.050605T0229Z-050605T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
929 PM CDT SAT JUN 4 2005

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  JEFFERSON COUNTY IN SOUTHEAST IOWA
  CENTRAL VAN BUREN COUNTY IN SOUTHEAST IOWA

* UNTIL 1015 PM CDT

* AT 928 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 6 MILES SOUTH OF KEOSAUQUA...MOVING NORTH AT 60 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  KEOSAUQUA AND BENTONSPORT/VERNON BY 935 PM CDT
  STOCKPORT AND 8 MILES EAST OF DOUDS/LEANDO BY 940 PM CDT
  BIRMINGHAM BY 945 PM CDT
  FAIRFIELD AND 7 MILES EAST OF LIBERTYVILLE BY 950 PM CDT
  PLEASANT PLAIN BY 1000 PM CDT

TORNADOES AT NIGHT ARE DIFFICULT TO SEE AND ARE ESPECIALLY DANGEROUS.

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL THE SIZE OF 
GOLFBALLS.

LAT...LON 4074 9209 4105 9213 4107 9214 4116 9215
      4115 9212 4115 9174 4108 9173 4107 9174
      4062 9181 4061 9206

$$

DLF

2 follow-up statements

000 
WWUS53 KDVN 050247
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
945 PM CDT SAT JUN 4 2005

IAC101-177-050315-
/O.CON.KDVN.TO.W.0004.000000T0000Z-050605T0315Z/
JEFFERSON IA-VAN BUREN IA-
945 PM CDT SAT JUN 4 2005

...A TORNADO WARNING CONTINUES UNTIL 1015 PM CDT FOR CENTRAL VAN
BUREN AND JEFFERSON COUNTIES...

AT 941 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR AUSTIN PARK...OR 
ABOUT OVER KEOSAUQUA...MOVING NORTH AT 50 MPH.  TRAINED SPOTTERS
REPORTED A WALL CLOUD WITH THIS STORM JUST SOUTHWEST OF KEOSAUQUA
941 PM.

THE TORNADO WILL BE NEAR...
  LACEY KEOSAUQUA STATE PARK CAMPGROUNDS AND LAKE SUGEMA CAMPGROUNDS
  BY 935 PM CDT
  KEOSAUQUA AIRPORT...KEOSAUQUA...AUSTIN PARK AND MOUNT ZION BY 940
  PM CDT
  KILBOURN BY 945 PM CDT
  COLLETT AND BIRMINGHAM BY 950 PM CDT
  FAIRFIELD BY 1000 PM CDT

TORNADOES AT NIGHT ARE DIFFICULT TO SEE AND ARE ESPECIALLY DANGEROUS.

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL THE SIZE OF OF 
GOLFBALLS.

LAT...LON 4074 9209 4105 9213 4107 9214 4116 9215
      4115 9212 4115 9174 4108 9173 4107 9175
      4067 9177 4068 9209

$$

DLF

000 
WWUS53 KDVN 050308
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1006 PM CDT SAT JUN 4 2005

IAC177-050316-
/O.CAN.KDVN.TO.W.0004.000000T0000Z-050605T0315Z/
VAN BUREN IA-
1006 PM CDT SAT JUN 4 2005

...THE TORNADO WARNING FOR VAN BUREN COUNTY IS CANCELLED...

THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING
TORNADO WEATHER HAS MOVED OUT OF THE WARNED AREA. THEREFORE THE 
TORNADO WARNING HAS BEEN CANCELLED.


LAT...LON 4090 9213 4106 9208 4116 9207 4115 9172
      4089 9173

$$

IAC101-050315-
/O.CON.KDVN.TO.W.0004.000000T0000Z-050605T0315Z/
JEFFERSON IA-
1006 PM CDT SAT JUN 4 2005

...A TORNADO WARNING CONTINUES UNTIL 1015 PM CDT FOR JEFFERSON
COUNTY...

AT 1003 PM CDT...TRAINED SPOTTERS REPORTED 3/4 INCH HAIL AND HIGH 
WINDS IN FAIRFIELD.  THE TORNADO WAS LOCATED NEAR BECKWITH...OR 
ABOUT OVER FAIRFIELD...MOVING NORTH AT 45 MPH.

THE TORNADO WILL BE NEAR...
  BECKWITH AND FAIRFIELD NOW.
  PERLEE...SALINA AND 5 MILES EAST OF FAIRFIELD MUNICIPAL AIRPORT BY
  1010 PM CDT
  EAST PLEASANT PLAIN...PLEASANT PLAIN AND 6 MILES WEST OF
  GERMANVILLE BY 1015 PM CDT

TORNADOES AT NIGHT ARE DIFFICULT TO SEE AND ARE ESPECIALLY DANGEROUS.

THIS STORM IS ALSO CAPABLE OF PRODUCING LARGE HAIL THE SIZE OF 
GOLFBALLS.

LAT...LON 4090 9213 4106 9208 4116 9207 4115 9172
      4089 9173

$$

DLF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 8:53 PM CDT	Severe Thunderstorm Warning	DVN	Benton	67 min
Jun 4, 9:10 PM CDT	Severe Thunderstorm Warning	DVN	Van Buren	35 min
Jun 4, 9:45 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Keokuk	60 min
Jun 4, 10:03 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Linn	57 min
Jun 4, 10:13 PM CDT	Tornado Warning	DVN	Iowa, Jefferson, Johnson, Keokuk, Washington	47 min
Jun 4, 10:21 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan, Delaware	56 min
Jun 4, 10:32 PM CDT	Flash Flood Warning	DVN	Benton	8 hr
Jun 4, 10:39 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Linn	56 min
Jun 4, 10:56 PM CDT	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Linn	42 min
Jun 4, 11:01 PM CDT	Tornado Warning	DVN	Linn	40 min
Jun 4, 11:04 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Lee, Van Buren	50 min
Jun 4, 11:22 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Jones	50 min
Jun 4, 11:51 PM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	39 min
Jun 4, 11:59 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Muscatine, Scott	42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.