Alert archive / Iowa / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 252, NWS Quad Cities, IA

June 25, 2024Cedar County, Johnson County, Linn County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 25, 2024, 7:25 PM CDT for Cedar County, Johnson County, Linn County, Iowa. It was in force for 21 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 25, 2024, 7:25 PM CDT (00:25 UTC)
Expired
Jun 25, 2024, 7:46 PM CDT
In force
21 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Tornado
Possible
Damage threat
Considerable
Hail
1.25 in
Wind
70.0 mph

Counties Cedar County, IA, Johnson County, IA, Linn County, IA

The radar

The Quad Cities radar (KDVN), 71 km from the middle of the area, began a volume at 00:28 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.

IssuedProductOfficeLasted
Jun 25, 5:17 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.4 hours before the alert went out and 298 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, Lincoln, IL at 00:00Z on 2024-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lincoln, IL at 00:00Z on 2024-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.193958Sfc1 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
7 J/kg
Mixed-layer CIN
-485 J/kg
Mixed-layer LCL
2407 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
173 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

836 
WUUS53 KDVN 260025
SVRDVN
IAC031-103-113-260130-
/O.NEW.KDVN.SV.W.0252.240626T0025Z-240626T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
725 PM CDT Tue Jun 25 2024

The National Weather Service in the Quad Cities has issued a

* Severe Thunderstorm Warning for...
  Southwestern Cedar County in east central Iowa...
  Northeastern Johnson County in east central Iowa...
  Southeastern Linn County in east central Iowa...

* Until 830 PM CDT.

* At 724 PM CDT, severe thunderstorms were located along a line 
  extending from Shueyville to Cou Falls, moving southeast at 25 
  mph. A large hail producing storm is also located near the Linn 
  and Johnson County border.

  HAZARD...70 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Cedar Rapids, Iowa City, West Branch, Coralville, North Liberty,
  Solon, Ely, University Heights, Shueyville, Lake Macbride State
  Park, Rochester, Buchanan, Newport, Cedar Valley, Sugar Bottom Camp
  Ground, Sutliff, West Overlook, Coralville Lake Dam Complex,
  Springdale, and Cedar Bluff.

This includes the following highways...
 Interstate 80 in Iowa between mile markers 243 and 268.
 Interstate 380 between mile markers 8 and 17.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
sturdy building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4190 9136 4160 9104 4160 9153 4195 9173
TIME...MOT...LOC 0024Z 306DEG 24KT 4187 9163 4179 9165 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Friedlein
1 follow-up statement
729 
WWUS53 KDVN 260046
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
746 PM CDT Tue Jun 25 2024

IAC031-103-113-260055-
/O.CAN.KDVN.SV.W.0252.000000T0000Z-240626T0130Z/
Cedar IA-Johnson IA-Linn IA-
746 PM CDT Tue Jun 25 2024

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CEDAR...
NORTHEASTERN JOHNSON AND SOUTHEASTERN LINN COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
east central Iowa.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
the Quad Cities.

&&

LAT...LON 4190 9136 4160 9104 4160 9153 4195 9173
TIME...MOT...LOC 0044Z 306DEG 24KT 4179 9148 4171 9150 

$$

Ervin

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 7:07 PM CDTSevere Thunderstorm WarningDVNDes Moines38 min
Jun 25, 7:12 PM CDTTornado WarningDVNCedar, Johnson, Muscatine33 min
Jun 25, 7:22 PM CDTSevere Thunderstorm Warning Destructive damage threatDVNMuscatine, Scott68 min
Jun 25, 7:40 PM CDTSevere Thunderstorm WarningDVNLee, Van Buren50 min
Jun 25, 7:44 PM CDTTornado WarningDVNMuscatine, Scott46 min
Jun 25, 7:49 PM CDTSevere Thunderstorm WarningDVNScott29 min
Jun 25, 7:52 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNScott68 min
Jun 25, 7:54 PM CDTFlash Flood WarningDVNVan Buren63 min
Jun 25, 8:19 PM CDTSevere Thunderstorm WarningDVNScott26 min
Jun 25, 8:24 PM CDTRiver Flood WarningDVNCedar5 days
Jun 25, 8:36 PM CDTSevere Thunderstorm WarningDVNDes Moines, Louisa39 min
Jun 25, 8:48 PM CDTRiver Flood WatchDVNLouisa21 days
Jun 25, 8:48 PM CDTRiver Flood WatchDVNLouisa21 days
Jun 25, 9:10 PM CDTSevere Thunderstorm WarningDVNJohnson, Louisa, Muscatine22 min
Jun 25, 9:19 PM CDTRiver Flood WatchDVNLee21 days
Jun 26, 10:00 AM CDTRiver Flood WarningDVNLouisa, Muscatine17 days
Jun 26, 10:00 AM CDTRiver Flood WarningDVNCedar, Johnson, Muscatine5 days
Jun 26, 10:00 AM CDTRiver Flood WarningDVNLouisa9 days
Jun 26, 10:00 AM CDTRiver Flood WarningDVNLouisa18 days
Jun 26, 11:56 AM CDTRiver Flood WarningDVNLee27 days

Nearby

Severe Thunderstorm Warnings in Iowa, 2024Every severe thunderstorm warning in 2024

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.