Alert archive / Iowa / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 228, NWS Des Moines, IA

September 15, 2019Audubon County, Carroll County, Guthrie County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Sep 15, 2019, 12:19 AM CDT for Audubon County, Carroll County, Guthrie County, Iowa. It was in force for 41 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: Sep 15, 2019, 12:19 AM CDT (05:19 UTC)
Expired: Sep 15, 2019, 1:00 AM CDT
In force: 41 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Audubon County, IA, Carroll County, IA, Guthrie County, IA

The radar

The Des Moines radar (KDMX), 86 km from the middle of the area, began a volume at 05:22 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 Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 14, 11:59 PM CDT, 20 minutes earlier.

Area forecast discussion, Sep 14, 11:59 PM CDT, 20 minutes before

Area Forecast Discussion
National Weather Service Des Moines IA
1159 PM CDT Sat Sep 14 2019

.DISCUSSION.../Tonight through Saturday/
Issued at 339 PM CDT Sat Sep 14 2019

Convection that started out over eastern Nebraska and western Iowa
in an area of warm advection aided by a low level jet that has not
died.  Storms have been very pulsy dropping brief heavy rainfall and
anywhere from pea to quarter sized hail.  Storms will continue to
push through the state this afternoon and possibly early evening.

There may be a brief period this evening that is convection free but
a shortwave will pass through the northern Plains tonight and brush
northern and possibly central Iowa Iowa.  This will be coupled with
a surface low and trough traversing the state overnight. Forcing is
best over northeast into east central Iowa so the better/stronger
storms are expected. Shear is weak but the storms will have the
potential for some severe hail and wind.  Bigger threat will be
heavy rainfall with PWAT's increasing to 1.7 inches.

Precip threat pushes east by Sunday morning with ridging building
in.  Return flow will push temperatures back into the mid 80s with
increasing dewpoints to around 70.  By Monday/Tuesday highs will be
near 90 so well above normal for this time of year.

By Wednesday, a strong system carves a trough over the Northern
Plains into the Upper Midwest bringing another chance for storms to
the region.  Ridging builds back into the area for Thursday then
another shortwave rides the ridge late Friday/Saturday for
additional storm chances.

&&

.AVIATION.../For the 06Z TAFS through 06Z Sunday night/
Issued at 1155 PM CDT Sat Sep 14 2019

Scattered thunderstorms possible overnight at most sites overnight
that will progress from north to south and are expected to be done
by 12z. The wind will become light and variable and there will be
some potential for fog especially across northern Iowa. VFR
conditions are expected much of the day Sunday.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

DISCUSSION...FAB
AVIATION...Donavon

Hazardous weather outlook, Sep 14, 3:50 PM CDT, 8 hours 29 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
350 PM CDT Sat Sep 14 2019

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-152100-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
350 PM CDT Sat Sep 14 2019

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

Scattered thunderstorms are possible this afternoon then again tonight
into Sunday morning. A few storms may become severe with hail and
damaging winds the main threat. Brief heavy rainfall is also
possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Periodic storm chances are possible Tuesday night into Thursday,
but the probability of severe weather remains low at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters might be needed this afternoon and again late tonight.

FAB

In the hours before

Local storm report, Sep 14, 6:19 PM CDT, 6 hours before

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Local storm report, Sep 14, 6:22 PM CDT, 5 hours 57 minutes before

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  <meta name="viewport" content="width=device-width, initial-scale=1">
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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Local storm report, Sep 14, 6:31 PM CDT, 5 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
631 PM CDT SAT SEP 14 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0630 PM     HAIL             ELDORA                  42.36N 93.10W
09/14/2019  E0.88 INCH       HARDIN             IA   TRAINED SPOTTER

&&

Local storm report, Sep 14, 7:27 PM CDT, 4 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
727 PM CDT SAT SEP 14 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0315 PM     HAIL             2 SSE DUNCOMBE          42.44N 93.98W
09/14/2019  M1.00 INCH       WEBSTER            IA   PUBLIC

0601 PM     HAIL             1 NE AMES               42.03N 93.61W
09/14/2019  E1.25 INCH       STORY              IA   PUBLIC

            REPORT FROM MPING: HALF DOLLAR (1.25 IN.).

0600 PM     HAIL             2 NE AMES               42.04N 93.60W
09/14/2019  E1.50 INCH       STORY              IA   EMERGENCY MNGR

            DELAYED REPORT VIA IOWA STATE UNIVERSITY EMERGENCY MANAGER.

0555 PM     HAIL             1 NE AMES               42.03N 93.62W
09/14/2019  U1.00 INCH       STORY              IA   PUBLIC

            REPORT FROM MPING: QUARTER (1.00 IN.).

0555 PM     HAIL             1 N AMES                42.04N 93.63W
09/14/2019  E1.25 INCH       STORY              IA   PUBLIC

            REPORT FROM MPING: HALF DOLLAR (1.25 IN.).

0553 PM     HAIL             1 N AMES                42.04N 93.63W
09/14/2019  U1.00 INCH       STORY              IA   PUBLIC

            REPORT FROM MPING: QUARTER (1.00 IN.).

0536 PM     HAIL             1 W AMES                42.02N 93.65W
09/14/2019  E1.00 INCH       STORY              IA   NWS EMPLOYEE

0531 PM     HAIL             3 NW AMES               42.06N 93.64W
09/14/2019  U0.75 INCH       STORY              IA   PUBLIC

            REPORT FROM MPING: DIME (0.75 IN.).

0630 PM     HAIL             ELDORA                  42.36N 93.10W
09/14/2019  E0.88 INCH       HARDIN             IA   TRAINED SPOTTER

0333 PM     HAIL             KAMRAR                  42.39N 93.73W
09/14/2019  E1.00 INCH       HAMILTON           IA   PUBLIC

            REPORT FROM MPING: QUARTER (1.00 IN.).

0423 PM     HAIL             5 S CHURDAN             42.08N 94.48W
09/14/2019  E1.00 INCH       GREENE             IA   PUBLIC

            VIA SOCIAL MEDIA.

0250 PM     HAIL             1 NNW JEFFERSON         42.03N 94.38W
09/14/2019  E1.00 INCH       GREENE             IA   TRAINED SPOTTER

0215 PM     HAIL             3 S DAWSON              41.81N 94.22W
09/14/2019  E1.00 INCH       DALLAS             IA   EMERGENCY MNGR

            PEA AND DIME SIZED HAIL WITH SEVERAL UP TO
            QUARTER SIZED MIXED IN.

&&

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.