Alert archive / Iowa / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 6, NWS Quad Cities, IA

April 17, 2019Dubuque County, Iowa

NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 17, 2019, 7:14 PM CDT for Dubuque County, Iowa. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 17, 2019, 7:14 PM CDT (00:14 UTC)
Expired: Apr 17, 2019, 7:45 PM CDT
In force: 31 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Dubuque County, IA

The radar

The Quad Cities radar (KDVN), 99 km from the middle of the area, began a volume at 00:17 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 forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 17, 6:27 PM CDT, 47 minutes earlier.

Area forecast discussion, Apr 17, 6:27 PM CDT, 47 minutes before

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Hazardous weather outlook, Apr 17, 3:46 PM CDT, 3 hours 28 minutes before

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In the hours before

Special weather statement, Apr 17, 5:43 PM CDT, 1 hour 31 minutes before

Special Weather Statement
National Weather Service Quad Cities IA/IL
543 PM CDT Wed Apr 17 2019

IAC019-172330-
Buchanan-
543 PM CDT Wed Apr 17 2019

...A STRONG THUNDERSTORM WILL AFFECT ...

At 542 PM CDT, a strong thunderstorm was located over La Porte City,
or 13 miles southeast of Waterloo, moving northeast at 35 mph.

Winds in excess of 40 mph and penny size hail are possible with this
storm.

Locations impacted include...
Independence, Jesup, Fairbank, Winthrop, Hazleton, Quasqueton,
Lamont, Brandon, Rowley, Aurora, Stanley, Lime Creek County Park,
Winthrop Golf Course, Wapsipinicon Golf Course, Fontana County Park,
Littleton, Monti, Buchanan County Fairgrounds, Otterville and
Independence Airport.

This includes Interstate 380 between mile markers 49 and 55.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4235 9160 4230 9188 4230 9206 4247 9206
      4247 9208 4264 9208 4264 9161
TIME...MOT...LOC 2242Z 249DEG 30KT 4234 9219

Ervin

Special weather statement, Apr 17, 5:43 PM CDT, 1 hour 31 minutes before

Special Weather Statement
National Weather Service Quad Cities IA/IL
543 PM CDT Wed Apr 17 2019

IAC019-172330-
Buchanan-
543 PM CDT Wed Apr 17 2019

...A STRONG THUNDERSTORM WILL AFFECT BUCHANAN COUNTY...

At 543 PM CDT, a strong thunderstorm was located over La Porte City,
or 13 miles southeast of Waterloo, moving east at 35 mph.

Winds in excess of 40 mph and penny size hail are possible with this
storm.

Locations impacted include...
Independence, Jesup, Fairbank, Winthrop, Hazleton, Quasqueton,
Lamont, Brandon, Rowley, Aurora, Stanley, Lime Creek County Park,
Winthrop Golf Course, Wapsipinicon Golf Course, Fontana County Park,
Littleton, Monti, Buchanan County Fairgrounds, Otterville and
Independence Airport.

This includes Interstate 380 between mile markers 49 and 55.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4235 9160 4230 9188 4230 9206 4247 9206
      4247 9208 4264 9208 4264 9161
TIME...MOT...LOC 2243Z 249DEG 30KT 4235 9218

Ervin

Special weather statement, Apr 17, 5:50 PM CDT, 1 hour 24 minutes before

Special Weather Statement
National Weather Service Quad Cities IA/IL
550 PM CDT Wed Apr 17 2019

IAC011-095-172330-
Benton-Iowa-
550 PM CDT Wed Apr 17 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN BENTON AND NORTHERN
IOWA COUNTIES UNTIL 630 PM CDT...

At 550 PM CDT, a strong thunderstorm was located over Belle Plaine,
or 14 miles northwest of Marengo, moving east at 40 mph.

Wind gusts of 50 to 55 mph and half inch hail are possible with this
storm.

Locations impacted include...
Marengo, Belle Plaine, Atkins, Walford, Shellsburg, Newhall,
Blairstown, Van Horne, Keystone, Norway, Luzerne, Amana, Middle
Amana, South Amana, Homestead, West Amana, Upper South Amana, East
Amana, Hannen Lake Park and Watkins.

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4204 9229 4210 9184 4173 9184 4180 9230
TIME...MOT...LOC 2250Z 268DEG 34KT 4191 9231

Gibbs

Special weather statement, Apr 17, 6:26 PM CDT, 48 minutes before

Special Weather Statement
National Weather Service Quad Cities IA/IL
626 PM CDT Wed Apr 17 2019

IAC095-103-113-180030-
Johnson-Linn-Iowa-
626 PM CDT Wed Apr 17 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT JOHNSON...SOUTHERN LINN
AND IOWA COUNTIES UNTIL 730 PM CDT...

At 626 PM CDT, radar indicated strong thunderstorms were located
along a line extending from near Palo to near Walford to near Conroy
to Millersburg to near What Cheer. Movement was east at 35 mph.

Wind gusts up to 50 mph and half inch hail are possible with these
storms.

Locations impacted include...
Cedar Rapids, Iowa City, Marengo, Marion, Coralville, North Liberty,
Hiawatha, Mount Vernon, Robins, Williamsburg, Lisbon, Fairfax, Solon,
Tiffin, Ely, Walford, Springville, University Heights, North English
and Palo.

This includes the following highways...
 Interstate 80 in Iowa between mile markers 210 and 253.
 Interstate 380 between mile markers 1 and 31.

If outdoors, consider seeking shelter inside a building.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4166 9230 4173 9214 4186 9196 4186 9183
      4212 9183 4213 9137 4167 9137 4151 9151
      4151 9230
TIME...MOT...LOC 2326Z 277DEG 31KT 4204 9175 4191 9182 4173 9206 4159
9217 4145 9236

Gibbs

Special weather statement, Apr 17, 7:08 PM CDT, 6 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 7:08 PM CDT	Special Weather Statement	DVN	Dubuque	37 min
Apr 17, 7:42 PM CDT	Special Weather Statement	DVN	Muscatine	63 min
Apr 17, 8:22 PM CDT	Special Weather Statement	DVN	Muscatine, Scott	38 min
Apr 17, 8:46 PM CDT	Special Weather Statement	DVN	Scott	44 min
Apr 17, 9:45 PM CDT	Special Weather Statement	DVN	Whiteside	45 min
Apr 17, 11:24 PM CDT	Special Weather Statement	DVN	Hancock	36 min
Apr 17, 11:56 PM CDT	Special Weather Statement	DVN	McDonough	64 min

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; radar from the NEXRAD Level II archive.