Alert archive / Iowa / Tornado Warnings in 2014

Tornado Warning 4, NWS Quad Cities, IA

April 13, 2014Cedar County, Johnson County, Muscatine County, Iowa

NWS Quad Cities, IA issued this tornado warning at Apr 13, 2014, 6:03 PM CDT for Cedar County, Johnson County, Muscatine County, Iowa. It was in force for 27 min. 1 report 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 13, 2014, 6:03 PM CDT (23:03 UTC)
Expired: Apr 13, 2014, 6:30 PM CDT
In force: 27 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Observed
Hail: 0.0 in

Counties Cedar County, IA, Johnson County, IA, Muscatine County, IA

The radar

The Quad Cities radar (KDVN), 67 km from the middle of the area, began a volume at 23:07 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
Apr 13, 6:15 PM CDT	TORNADO	3 Nw West Liberty, IA	SPOTTERS REPORTED A TORNADO ON THE GROUND CROSSING ACROSS THE CEDAR COUNTY BORDER.

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

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.1 hours before the alert went out and 74 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1081 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 12 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.

025 
WFUS53 KDVN 132303
TORDVN
IAC031-103-139-132330-
/O.NEW.KDVN.TO.W.0004.140413T2303Z-140413T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
603 PM CDT SUN APR 13 2014

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN CEDAR COUNTY IN EAST CENTRAL IOWA...
  SOUTHEASTERN JOHNSON COUNTY IN EAST CENTRAL IOWA...
  NORTHWESTERN MUSCATINE COUNTY IN EAST CENTRAL IOWA...

* UNTIL 630 PM CDT

* AT 558 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR LONE TREE...
  AND MOVING NORTHEAST AT 40 MPH.

  HAZARD...DAMAGING TORNADO.

  SOURCE...LAW ENFORCEMENT CONFIRMED TORNADO.

  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.

* THE TORNADO WILL BE NEAR...
  WEST LIBERTY AROUND 615 PM CDT.
  WEST BRANCH AROUND 620 PM CDT.
  ROCHESTER AROUND 625 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SPRINGDALE...OASIS AND CEDAR
VALLEY.

THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 251 AND 265.

OTHER LOCATIONS AFFECTED INCLUDE HERBERT HOOVER NATIONAL HISTORIC
SITE...MUSCATINE COUNTY FAIRGROUNDS...RIVER JUNCTION PARK AND CEDAR
VALLEY PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4178 9133 4170 9107 4142 9138 4148 9150
      4151 9153 4151 9156
TIME...MOT...LOC 2303Z 212DEG 33KT 4153 9141

TORNADO...OBSERVED
HAIL...0.00IN

$$

12

4 follow-up statements

478 
WWUS53 KDVN 132311
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
611 PM CDT SUN APR 13 2014

IAC031-103-139-132330-
/O.CON.KDVN.TO.W.0004.000000T0000Z-140413T2330Z/
MUSCATINE IA-JOHNSON IA-CEDAR IA-
611 PM CDT SUN APR 13 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CEDAR...EAST
CENTRAL JOHNSON AND NORTHWESTERN MUSCATINE COUNTIES UNTIL 630 PM
CDT...

AT 607 PM CDT...A CONFIRMED TORNADO WAS LOCATED 5 MILES NORTHEAST OF
LONE TREE...AND MOVING NORTHEAST AT 30 MPH.

HAZARD...DAMAGING TORNADO.

SOURCE...LAW ENFORCEMENT CONFIRMED TORNADO. TORNADO REPORTED ON THE GROUND
         JUST WEST OF LONE TREE JUST AFTER 6 PM CDT.

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 STORM WILL BE NEAR...
  WEST LIBERTY AROUND 615 PM CDT.
  WEST BRANCH AROUND 620 PM CDT.
  ROCHESTER AROUND 630 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SPRINGDALE AND CEDAR VALLEY.

THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 251 AND 265.

OTHER LOCATIONS AFFECTED INCLUDE HERBERT HOOVER NATIONAL HISTORIC
SITE...MUSCATINE COUNTY FAIRGROUNDS AND CEDAR VALLEY PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4149 9133 4153 9144 4155 9149 4156 9151
      4178 9133 4170 9107
TIME...MOT...LOC 2310Z 219DEG 27KT 4157 9136

TORNADO...OBSERVED
HAIL...0.00IN

$$

12

660 
WWUS53 KDVN 132318
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
618 PM CDT SUN APR 13 2014

IAC031-103-139-132330-
/O.CON.KDVN.TO.W.0004.000000T0000Z-140413T2330Z/
MUSCATINE IA-JOHNSON IA-CEDAR IA-
618 PM CDT SUN APR 13 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CEDAR...EAST
CENTRAL JOHNSON AND NORTHWESTERN MUSCATINE COUNTIES UNTIL 630 PM
CDT...

AT 615 PM CDT...A CONFIRMED TORNADO ON THE GROUND WAS LOCATED NEAR 
WEST BRANCH...AND MOVING NORTHEAST AT 35 MPH.

HAZARD...DAMAGING TORNADO.

SOURCE...WEATHER SPOTTERS AND RADAR CONFIRMED TORNADO.

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 STORM WILL BE NEAR...
  ROCHESTER AROUND 630 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SPRINGDALE AND CEDAR VALLEY.

THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 251 AND 265.

OTHER LOCATIONS AFFECTED INCLUDE HERBERT HOOVER NATIONAL HISTORIC
SITE...MUSCATINE COUNTY FAIRGROUNDS AND CEDAR VALLEY PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4153 9128 4158 9137 4160 9142 4163 9144
      4178 9133 4170 9107
TIME...MOT...LOC 2318Z 218DEG 29KT 4164 9130

TORNADO...OBSERVED
HAIL...0.00IN

$$

12

361 
WWUS53 KDVN 132325 CCA
SVSDVN

SEVERE WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
618 PM CDT SUN APR 13 2014

IAC031-103-139-132330-
/O.COR.KDVN.TO.W.0004.000000T0000Z-140413T2330Z/
MUSCATINE IA-JOHNSON IA-CEDAR IA-
618 PM CDT SUN APR 13 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CEDAR...EAST
CENTRAL JOHNSON AND NORTHWESTERN MUSCATINE COUNTIES UNTIL 630 PM
CDT...

AT 615 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR WEST LIBERTY...
AND MOVING NORTHEAST AT 35 MPH.

HAZARD...DAMAGING TORNADO.

SOURCE...RADAR AND WEATHER SPOTTERS CONFIRMED TORNADO.

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 STORM WILL BE NEAR...
  ROCHESTER AROUND 630 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE CEDAR VALLEY.

THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 251 AND 265.

OTHER LOCATIONS AFFECTED INCLUDE HERBERT HOOVER NATIONAL HISTORIC
SITE...MUSCATINE COUNTY FAIRGROUNDS AND CEDAR VALLEY PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4153 9128 4158 9137 4160 9142 4163 9144
      4178 9133 4170 9107
TIME...MOT...LOC 2318Z 218DEG 29KT 4163 9129

TORNADO...OBSERVED
HAIL...0.00IN

$$

12

107 
WWUS53 KDVN 132330
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
630 PM CDT SUN APR 13 2014

IAC031-103-139-132339-
/O.EXP.KDVN.TO.W.0004.000000T0000Z-140413T2330Z/
MUSCATINE IA-JOHNSON IA-CEDAR IA-
630 PM CDT SUN APR 13 2014

...THE TORNADO WARNING FOR SOUTHWESTERN CEDAR...EAST CENTRAL JOHNSON
AND NORTHWESTERN MUSCATINE COUNTIES WILL EXPIRE AT 630 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS LOST ITS STRONG ROTATION 
AND WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE 
THREAT TO LIFE OR PROPERTY. PEOPLE IN TIPTON SHOULD STILL GO INSIDE 
AS THIS STORM APPROACHES THROUGH 645 PM CDT.

LAT...LON 4153 9128 4158 9137 4160 9142 4163 9144
      4178 9133 4170 9107
TIME...MOT...LOC 2329Z 218DEG 29KT 4170 9122

$$

12

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 10:15 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan	60 min
Apr 12, 11:35 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Keokuk, Linn, Washington	55 min
Apr 12, 11:50 PM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Van Buren, Washington	55 min
Apr 13, 12:27 AM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Jones, Linn, Louisa, Muscatine and 1 more	63 min
Apr 13, 1:17 AM CDT	Special Weather Statement	DVN	Clinton, Jackson, Scott	58 min
Apr 13, 1:30 AM CDT	Severe Thunderstorm Warning	DVN	Clinton, Scott	45 min
Apr 13, 1:27 PM CDT	Flood Watch	DVN	Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more	14 hr

Nearby

Tornado Warnings in Iowa, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.