Alert archive / Iowa / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 21, NWS Quad Cities, IA

May 16, 2019Clinton County, Scott County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at May 16, 2019, 7:15 PM CDT for Clinton County, Scott County, Iowa. It was in force for 45 min. 2 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: May 16, 2019, 7:15 PM CDT (00:15 UTC)
Expired: May 16, 2019, 8:00 PM CDT
In force: 45 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clinton County, IA, Scott County, IA

The radar

The Quad Cities radar (KDVN), 27 km from the middle of the area, began a volume at 00:16 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
May 16, 7:29 PM CDT	TSTM WND GST 58	Clinton Airport, IA
May 16, 7:37 PM CDT	HAIL 0.25	1 Wsw Camanche, IA

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 00:00Z, 0.3 hours before the alert went out and 21 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: 2335 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1972 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted.

756 
WUUS53 KDVN 170015
SVRDVN
IAC045-163-170100-
/O.NEW.KDVN.SV.W.0021.190517T0015Z-190517T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
715 PM CDT Thu May 16 2019

The National Weather Service in the Quad Cities has issued a

* Severe Thunderstorm Warning for...
  Northeastern Scott County in east central Iowa...
  Southern Clinton County in east central Iowa...

* Until 800 PM CDT.

* At 714 PM CDT, a severe thunderstorm was located over Grand Mound,
  or 15 miles south of Maquoketa, moving east at 25 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Clinton, DeWitt, Camanche, Princeton, Long Grove, Cordova, Grand
  Mound, Calamus, McCausland, Low Moor, Welton, Malone, Rock Creek
  Marina and Campground, Folletts, Park View, Elvira, Princeton
  Wildlife Area, Rock Creek  Park, Clinton Municipal Airport and
  Sherman Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4184 9018 4182 9018 4180 9019 4180 9022
      4175 9031 4173 9032 4169 9031 4168 9033
      4163 9034 4176 9080 4196 9079
TIME...MOT...LOC 0014Z 290DEG 23KT 4184 9067 

HAIL...1.00IN
WIND...60MPH
 
$$

Gibbs

5 follow-up statements

729 
WWUS53 KDVN 170025
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
725 PM CDT Thu May 16 2019

IAC045-163-170100-
/O.CON.KDVN.SV.W.0021.000000T0000Z-190517T0100Z/
Scott IA-Clinton IA-
725 PM CDT Thu May 16 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHEASTERN SCOTT AND SOUTHEASTERN CLINTON COUNTIES...

At 725 PM CDT, a severe thunderstorm was located over Low Moor, or 7
miles west of Clinton, moving east at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Clinton, DeWitt, Camanche, Princeton, Long Grove, Cordova, Grand
Mound, McCausland, Low Moor, Welton, Malone, Rock Creek Marina and
Campground, Folletts, Park View, Elvira, Princeton Wildlife Area,
Rock Creek  Park, Clinton Municipal Airport, Clinton County
Fairgrounds and Scott County Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4184 9018 4182 9018 4180 9019 4180 9022
      4175 9031 4173 9032 4169 9031 4168 9033
      4163 9034 4170 9059 4179 9070 4194 9071
TIME...MOT...LOC 0025Z 284DEG 21KT 4181 9037 

HAIL...1.00IN
WIND...60MPH
 
$$

Gibbs

664 
WWUS53 KDVN 170031 CCA
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
731 PM CDT Thu May 16 2019

IAC045-163-170100-
/O.COR.KDVN.SV.W.0021.000000T0000Z-190517T0100Z/
Scott IA-Clinton IA-
731 PM CDT Thu May 16 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR NORTHEASTERN SCOTT AND SOUTHEASTERN CLINTON COUNTIES...

At 731 PM CDT, a severe thunderstorm was located over Low Moor, or
near Clinton, moving east at 25 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Clinton, DeWitt, Camanche, Princeton, Long Grove, Cordova, Grand
Mound, McCausland, Low Moor, Welton, Malone, Rock Creek Marina and
Campground, Folletts, Park View, Elvira, Princeton Wildlife Area,
Rock Creek  Park, Clinton Municipal Airport, Clinton County
Fairgrounds and Scott County Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4184 9018 4182 9018 4180 9019 4180 9022
      4175 9031 4173 9032 4169 9031 4168 9033
      4163 9034 4170 9059 4179 9070 4194 9071
TIME...MOT...LOC 0025Z 284DEG 21KT 4181 9037 

HAIL...1.50IN
WIND...60MPH
 
$$

Gibbs

264 
WWUS53 KDVN 170038
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
738 PM CDT Thu May 16 2019

IAC163-170046-
/O.CAN.KDVN.SV.W.0021.000000T0000Z-190517T0100Z/
Scott IA-
738 PM CDT Thu May 16 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SCOTT COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4184 9018 4180 9019 4180 9022 4175 9031
      4173 9032 4174 9034 4173 9036 4174 9039
      4173 9041 4174 9041 4174 9043 4176 9044
      4176 9046 4177 9047 4177 9054 4176 9058
      4177 9060 4179 9060 4191 9054
TIME...MOT...LOC 0036Z 284DEG 21KT 4179 9029 

$$

IAC045-170100-
/O.CON.KDVN.SV.W.0021.000000T0000Z-190517T0100Z/
Clinton IA-
738 PM CDT Thu May 16 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR SOUTHEASTERN CLINTON COUNTY...

At 736 PM CDT, a severe thunderstorm was located over Camanche, or
near Clinton, moving east at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated. At 729 PM the Clinton County Airport 
         reported a wind gust of 60 MPH.
 
IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Clinton, DeWitt, Camanche, Low Moor, Malone, Rock Creek Marina and
Campground, Folletts, Rock Creek  Park, Clinton Municipal Airport,
Clinton County Fairgrounds and Elvira.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4184 9018 4180 9019 4180 9022 4175 9031
      4173 9032 4174 9034 4173 9036 4174 9039
      4173 9041 4174 9041 4174 9043 4176 9044
      4176 9046 4177 9047 4177 9054 4176 9058
      4177 9060 4179 9060 4191 9054
TIME...MOT...LOC 0036Z 284DEG 21KT 4179 9029 

HAIL...1.00IN
WIND...60MPH
 
$$

Gibbs

608 
WWUS53 KDVN 170049
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
749 PM CDT Thu May 16 2019

IAC045-170100-
/O.CON.KDVN.SV.W.0021.000000T0000Z-190517T0100Z/
Clinton IA-
749 PM CDT Thu May 16 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR SOUTHEASTERN CLINTON COUNTY...

At 749 PM CDT, a severe thunderstorm was located over Camanche, or
near Clinton, moving east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Clinton, Camanche, Low Moor, Malone, Rock Creek Marina and
Campground, Folletts, Rock Creek  Park, Clinton Municipal Airport and
Elvira.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
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 this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4184 9018 4180 9019 4180 9022 4175 9031
      4173 9032 4174 9034 4173 9036 4174 9039
      4173 9041 4174 9041 4174 9043 4176 9044
      4176 9046 4177 9047 4189 9043
TIME...MOT...LOC 0049Z 281DEG 18KT 4182 9031 

HAIL...1.00IN
WIND...60MPH
 
$$

Gibbs

584 
WWUS53 KDVN 170059
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
759 PM CDT Thu May 16 2019

IAC045-170109-
/O.EXP.KDVN.SV.W.0021.000000T0000Z-190517T0100Z/
Clinton IA-
759 PM CDT Thu May 16 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLINTON COUNTY
WILL EXPIRE AT 800 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
northwestern Illinois...and 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 4184 9018 4180 9019 4180 9022 4175 9031
      4173 9032 4174 9034 4173 9036 4174 9039
      4173 9041 4174 9041 4174 9043 4176 9044
      4176 9046 4177 9047 4189 9043
TIME...MOT...LOC 0059Z 284DEG 21KT 4181 9024 

$$

Gibbs

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 8:00 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa	60 min
May 16, 8:27 PM CDT	Severe Thunderstorm Warning	DVN	Iowa	63 min
May 16, 8:48 PM CDT	Severe Thunderstorm Warning	DVN	Clinton	57 min
May 16, 8:57 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	48 min
May 16, 9:03 PM CDT	Flash Flood Warning	DVN	Iowa	5 hr
May 16, 9:06 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Iowa, Johnson, Muscatine, Washington	39 min
May 16, 9:23 PM CDT	Severe Thunderstorm Warning	DVN	Scott	52 min
May 16, 9:44 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Johnson, Louisa, Muscatine, Scott, Washington	46 min
May 16, 9:55 PM CDT	Flash Flood Warning	DVN	Cedar, Johnson, Muscatine, Washington	4 hr
May 16, 10:04 PM CDT	Special Weather Statement	DVN	Louisa, Washington	41 min
May 16, 10:10 PM CDT	Severe Thunderstorm Warning	DVN	Muscatine, Scott	50 min
May 16, 10:35 PM CDT	Special Weather Statement	DVN	Des Moines, Henry	25 min
May 16, 11:06 PM CDT	Special Weather Statement	DVN	Iowa	39 min
May 16, 11:27 PM CDT	Special Weather Statement	DVN	Jefferson	48 min
May 17, 5:31 AM CDT	Special Weather Statement	DVN	Jefferson, Keokuk, Washington	44 min
May 17, 6:08 AM CDT	Special Weather Statement	DVN	Keokuk, Washington	52 min
May 17, 6:41 AM CDT	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Keokuk, Louisa, Washington	49 min
May 17, 7:12 AM CDT	Special Weather Statement	DVN	Des Moines, Henry	48 min
May 17, 7:27 AM CDT	Special Weather Statement	DVN	Louisa	33 min
May 17, 7:56 AM CDT	Special Weather Statement	DVN	Des Moines	64 min
May 17, 8:28 AM CDT	River Flood Warning	DVN	Benton, Iowa	21 days
May 17, 8:38 AM CDT	River Flood Warning	DVN	Keokuk	16 days
May 17, 11:00 AM CDT	River Flood Warning	DVN	Scott	4 days

Nearby

Severe Thunderstorm Warnings in Iowa, 2019 Every severe thunderstorm warning in 2019

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.