Alert archive / Iowa / Special Weather Statements in 2021

Special Weather Statement, NWS Quad Cities, IA

August 23, 20215 counties in Iowa

NWS Quad Cities, IA issued this special weather statement at Aug 23, 2021, 8:15 AM CDT for 5 counties in Iowa. It was in force for 45 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
Aug 23, 2021, 8:15 AM CDT (13:15 UTC)
Expired
Aug 23, 2021, 9:00 AM CDT
In force
45 min
Issued by
NWS Quad Cities, IA
Hail
0.00 in
Wind
30

Counties Johnson County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Washington County, IA

The radar

The Quad Cities radar (KDVN), 82 km from the middle of the area, began a volume at 13:14 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 text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 23, 6:21 AM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, Aug 23, 6:21 AM CDT, 1 hour 54 minutes before
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Hazardous weather outlook, Aug 23, 4:28 AM CDT, 3 hours 47 minutes before
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In the hours before

Special weather statement, Aug 23, 5:40 AM CDT, 2 hours 35 minutes before
Special Weather Statement
National Weather Service Quad Cities IA/IL
540 AM CDT Mon Aug 23 2021

IAZ040>042-051>053-ILZ001-231145-
Jo Daviess IL-Linn IA-Buchanan IA-Delaware IA-Benton IA-Dubuque IA-
Jones IA-
540 AM CDT Mon Aug 23 2021

...Strong thunderstorms will impact portions of northwestern Jo
Daviess, Buchanan, Dubuque, Benton, northwestern Jones, Delaware and
northern Linn Counties through 645 AM CDT...

At 540 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Cassville to near La Porte City. Movement
was southeast at 20 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects. Minor damage to outdoor objects
         is possible.

Strong thunderstorms will be near...
  Luxemburg around 545 AM CDT.
  Holy Cross around 555 AM CDT.
  Mount Auburn and Balltown around 605 AM CDT.
  Rickardsville and Bankston around 610 AM CDT.
  Garrison and Sherrill around 615 AM CDT.
  Vinton and Epworth around 620 AM CDT.
  Dubuque, Centralia and Durango around 625 AM CDT.
  Asbury, Peosta and Sageville around 630 AM CDT.

Other locations impacted by these storms include Wapsipinicon Golf
Course, Bankston Park, Fillmore, Monti, Waupeton, Lattnerville,
Pinicon Ridge Park, Buck Creek, Baileys Ford Park and Petersburg.

This includes Interstate 380 between mile markers 27 and 55.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4263 9070 4254 9064 4248 9065 4242 9057
      4187 9230 4230 9230 4230 9206 4264 9208
      4265 9090 4267 9089
TIME...MOT...LOC 1040Z 311DEG 19KT 4268 9104 4228 9228

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

RP Kinney
Special weather statement, Aug 23, 6:35 AM CDT, 1 hour 40 minutes before
Special Weather Statement
National Weather Service Quad Cities IA IL
635 AM CDT Mon Aug 23 2021

ILZ002-007-009-017-018-231330-
Stephenson-Carroll-Whiteside-Bureau-Putnam-
Including the cities of Freeport, Mount Carroll, Sterling,
Princeton, and Hennepin
635 AM CDT Mon Aug 23 2021

...Areas of Dense Fog for the Morning Commute...

Areas of dense fog will reduce visibilities to one quarter mile
or less at times through 830 AM. Motorists should be prepared for
sudden changes in visibility. When encountering dense fog, slow
down, keep your headlights on low beam, and increase your
following distance. Be especially cautious in and near school
zones.
Special weather statement, Aug 23, 6:49 AM CDT, 1 hour 26 minutes before
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Special weather statement, Aug 23, 8:15 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 5:40 AM CDTSpecial Weather StatementDVNBenton, Buchanan, Delaware, Dubuque65 min
Aug 23, 6:49 AM CDTSpecial Weather StatementDVNJohnson, Jones56 min
Aug 23, 2:45 PM CDTHeat AdvisoryDVNBenton, Cedar, Clinton, Des Moines, Henry, Iowa and 12 more29 hr
Aug 23, 11:31 AM CDTSpecial Weather StatementDVNWarren29 min
Aug 23, 2:24 PM CDTSpecial Weather StatementDVNCarroll36 min

Nearby

Special Weather Statements in Iowa, 2021Every special weather statement in 2021

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.