Tornado Warning 42, NWS Des Moines, IA

376 
WWUS53 KDMX 212059
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
359 PM CDT Tue May 21 2024

IAC003-159-212108-
/O.CAN.KDMX.TO.W.0042.000000T0000Z-240521T2130Z/
Adams IA-Ringgold IA-
359 PM CDT Tue May 21 2024

...THE TORNADO WARNING FOR NORTHEASTERN ADAMS AND NORTHWESTERN
RINGGOLD COUNTIES IS CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 900 PM CDT for central, south
central and southwestern Iowa.

LAT...LON 4102 9425 4135 9433 4157 9408 4142 9384
TIME...MOT...LOC 2058Z 211DEG 58KT 4122 9421 

$$

IAC001-049-121-175-212130-
/O.CON.KDMX.TO.W.0042.000000T0000Z-240521T2130Z/
Madison IA-Union IA-Dallas IA-Adair IA-
359 PM CDT Tue May 21 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
MADISON...NORTH CENTRAL UNION...SOUTH CENTRAL DALLAS AND SOUTHEASTERN
ADAIR COUNTIES...

At 358 PM CDT, a confirmed tornado was located over Macksburg, or 13
miles northeast of Creston, moving northeast at 65 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Winterset around 405 PM CDT.
  Winterset-Madison County Airport around 410 PM CDT.
  De Soto and Badger Creek State Park around 415 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Macksburg, Winterset-Madison County Airport, and Badger Creek State
Park.

This includes Interstate 80 between mile markers 103 and 109.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4102 9425 4135 9433 4157 9408 4142 9384
TIME...MOT...LOC 2058Z 211DEG 58KT 4122 9421 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

Curtis

225 
WWUS53 KDMX 212115
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
415 PM CDT Tue May 21 2024

IAC001-175-212125-
/O.CAN.KDMX.TO.W.0042.000000T0000Z-240521T2130Z/
Union IA-Adair IA-
415 PM CDT Tue May 21 2024

...THE TORNADO WARNING FOR NORTH CENTRAL UNION AND SOUTHEASTERN ADAIR
COUNTIES IS CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 900 PM CDT for central and
south central Iowa.

LAT...LON 4118 9409 4153 9411 4157 9408 4142 9384
TIME...MOT...LOC 2115Z 211DEG 58KT 4146 9402 

$$

IAC049-121-212130-
/O.CON.KDMX.TO.W.0042.000000T0000Z-240521T2130Z/
Madison IA-Dallas IA-
415 PM CDT Tue May 21 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
MADISON AND SOUTH CENTRAL DALLAS COUNTIES...

At 415 PM CDT, a confirmed tornado was located 5 miles west of Badger
Creek State Park, or 8 miles north of Winterset, moving northeast at
65 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  De Soto and Badger Creek State Park around 420 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Winterset-Madison County Airport and Badger Creek State Park.

This includes Interstate 80 between mile markers 105 and 109.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4118 9409 4153 9411 4157 9408 4142 9384
TIME...MOT...LOC 2115Z 211DEG 58KT 4146 9402 

TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN

$$

Curtis

Area Forecast Discussion
National Weather Service Des Moines IA
142 PM CDT Tue May 21 2024

.KEY MESSAGES...
- Take action for ALL weather warnings this afternoon with
  tornadoes, damaging wind gusts, and large hail all possible
- Renewed or prolonged flooding possible with rain that falls
  this afternoon with rivers rising

&&

.DISCUSSION...
Issued at 142 PM CDT Tue May 21 2024

Already one round of heavy rainfall moved through the state last
night with 3 to 5 inches of rainfall in some areas with isolated
higher amounts that led to flash flooding. Severe storms also moved
over southern and parts of central Iowa in the morning hours. As a
shortwave trough lifts northeastward and negatively tilts this
afternoon, latest Warn on Forecast System (WoFS) is showing
good airmass recovery with dewpoints rising 5 or so degrees
ahead of a surface triple point. Low level kinematics are
already strong and mid-levels are increasing as well. As the
airmass recovers, WoFS shows strong instability with MLCAPE
growing above 1500 J/kg and very favorable 0-500m and 0-1km SRH
ahead of it as well. Hodographs show a bit more linear
depiction, but initially they may be able to remain curved in
the low levels. Therefore, concern and confidence remain high of
rotating storms capable of tornadoes, including a few strong
given the Particularly Dangerous Situation Tornado Watch issued
earlier, damaging wind gusts including the potential of a few
intense wind gusts (greater than 75 mph), and large hail larger
than golf ball size. The hail size can be greater with rotating
storms as hailstones recycle in the updraft. Rainfall with
these storms of 1 to 2 inches will be possible and could cause
new flash flooding or prolong or renew flooding with rivers
rising as well from the recent and future rainfall. Storms will
move quickly through our area this afternoon and be largely east
of a Waterloo to Ottumwa line by around 7pm

As we move into this evening, we will enter a several day period of
drier conditions, which will be welcome for saturated soils and
swollen streams. While river flooding will be peaking mid to
late this week, no substantial rainfall is forecast until
Thursday night into Friday. This is when the next shortwave
trough will approach and pass north of the region and bring
thunderstorms through the state. The timing may mitigate a wider
severe risk, but instability and shear may be sufficient for a
few strong to severe storms.

&&

.AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/...
Issued at 1235 PM CDT Tue May 21 2024

Main concern is severe thunderstorms that may have large hail
and damaging wind gusts this afternoon. TEMPO lines are for best
timing of storms with impacts that may need more limited as the
storms move through than currently shown. Winds are gusty from
the southeast early this afternoon, but will stay gusty as they
become from the northwest behind the storms. A return to VFR
conditions is forecast into tonight.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
Flood Watch until 7 PM CDT this evening for IAZ004>007-015>017-
023>028-033>039-044>050-057>062-070>075-081>083-092.

&&

DISCUSSION...Ansorge
AVIATION...Ansorge

Hazardous Weather Outlook
National Weather Service Des Moines IA
215 PM CDT Tue May 21 2024

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-221915-
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-
215 PM CDT Tue May 21 2024

This Hazardous Weather Outlook is for portions of central Iowa,
north central Iowa, northeast Iowa, northwest Iowa, south central
Iowa, southeast Iowa, southwest Iowa, and west central Iowa.

.DAY ONE...This Afternoon and Tonight

A cold front that will be moving eastward across the state of Iowa
to generate a line of strong-severe storms during the afternoon
and evening hours with tornadoes, damaging winds, flash flooding,
and large hail all possible with the strongest storms. The worst
of the storms will be primarily during the 3 pm to 9 pm timeframe.
Winds could gust over 40 mph at times this evening as the storms
move off to the east.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Additional thunderstorm chances return at times Friday and
through the weekend. The severe weather potential for these days
will be better determined in the coming days.

.SPOTTER INFORMATION STATEMENT...

Preliminary Local Storm Report
National Weather Service Des Moines IA
321 PM CDT Tue May 21 2024

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

0315 PM     Tstm Wnd Dmg     1 S Carroll             42.06N 94.87W
05/21/2024                   Carroll            IA   Law Enforcement

            Dispatch relayed wind and hail in Carroll
            with trees and powerlines down.

&&

Preliminary Local Storm Report
National Weather Service Des Moines IA
322 PM CDT Tue May 21 2024

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

0317 PM     Tornado          2 WNW Corning           41.01N 94.78W
05/21/2024                   Adams              IA   Storm Chaser

            Confirmed tornado on ground by storm chaser.

&&

MP

Preliminary Local Storm Report
National Weather Service Des Moines IA
323 PM CDT Tue May 21 2024

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

0315 PM     Tstm Wnd Gst     3 WSW Glidden           42.05N 94.79W
05/21/2024  M77 MPH          Carroll            IA   AWOS

&&

Preliminary Local Storm Report
National Weather Service Des Moines IA
325 PM CDT Tue May 21 2024

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

0325 PM     Tornado          1 NW Prescott           41.03N 94.63W
05/21/2024                   Adams              IA   Storm Chaser

&&

JC/CH

Preliminary Local Storm Report
National Weather Service Des Moines IA
333 PM CDT Tue May 21 2024

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

0317 PM     Tornado          3 ESE Corning           40.97N 94.69W
05/21/2024                   Adams              IA   Storm Chaser

            Confirmed tornado on the ground by storm
            chaser (former media).

&&

MP

Preliminary Local Storm Report
National Weather Service Des Moines IA
335 PM CDT Tue May 21 2024

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

0313 PM     Tornado          2 NNE Corning           41.01N 94.72W
05/21/2024                   Adams              IA   Broadcast Media

            Reports of structure damage near Corning.

&&