Tornado Warning 55, NWS Des Moines, IA

637 
WWUS53 KDMX 060321
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
1021 PM CDT Fri Jun 5 2026

IAC001-003-029-060345-
/O.CON.KDMX.TO.W.0055.000000T0000Z-260606T0345Z/
Cass IA-Adams IA-Adair IA-
1021 PM CDT Fri Jun 5 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
SOUTHEASTERN CASS...NORTH CENTRAL ADAMS AND SOUTHWESTERN ADAIR
COUNTIES...

At 1020 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles south of Massena, or 11 miles north of Corning,
moving east at 15 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Cass, north central Adams and southwestern Adair
Counties, including the following locations... Lake Icaria State
Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4114 9489 4124 9484 4122 9457 4104 9470
TIME...MOT...LOC 0320Z 280DEG 11KT 4116 9476 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Fowle

Area Forecast Discussion
National Weather Service Des Moines IA
635 PM CDT Fri Jun 5 2026

 ...Updated for the 00z Aviation Discussion...

.KEY MESSAGES...

- A lull in the storm activity for much of today, but storms return
  this evening and tonight, mainly across southern and central
  Iowa. There are renewed concerns for flash flooding and severe
  storms with all hazards possible.

- Much of Saturday will be dry but muggy, with scattered late
  day and evening storms again possible across central and southern
  Iowa.

- Heavy rain is a concern for renewed showers and thunderstorms
  on Sunday into Monday. Then heat builds next week with many
  areas exceeding 90 degrees.

&&

.SHORT TERM /THROUGH SATURDAY/...
Issued at 1214 PM CDT Fri Jun 5 2026

Upper air pattern early this afternoon features a low amplitude
upper trough moving through the northern Plains and upper
Midwest. Still seeing rather thick cloud cover across much of
Iowa due to abundant low level moisture (enhanced by yesterday’s
rainfall) trapped under the developing inversion. The storms
from overnight pushed the effective sfc boundary into Missouri
this morning, but the latest sfc obs show winds shifting back
southerly across portions of southern and central Iowa. Some
breaks in the cloud cover have allowed temps to climb into the
70s, and expect some additional heating the remainder of the
afternoon.

With the expected high temperatures (upper 70s to lower 80s)
model soundings continue to show at least a weak cap /MLCIN of
-25 J/kg/ remaining over much of the CWA through early evening.
With generally weak background forcing/ascent, any CI will
likely be tied to moisture convergence along the sfc boundary.
Several of the CAMs /HRRR, RRFS/ try to initiate isolated storms
across far southern Iowa from 22-00Z. While very conditional, if
any storms can initiate in that region, strong MLCAPE /2000-3000
J/kg/, steeper mid-level lapse rates, and effective deep layer
shear values of 25-35kts could lead to supercell development.
Large hail and damaging winds would be the primary threat,
although an isolated tornado is possible, especially near any
locally backed flow and enhanced SRH near the boundary.

The more robust severe threat will occur later in the evening
and then continue into the overnight as stronger lift develops
due to the strengthening nocturnal LLJ. Good model consensus
shows storms developing over ern NE/swrn IA from 9-11pm CDT and
then expanding eastward along the sfc boundary. Highest threat
for storms will generally occur along and south of I-80, but
will be ultimately dependent on where the sfc boundary ends up.
Even during these overnight hours, favorable MUCAPE/effective
shear will continue at least an isolated severe weather threat
/mainly hail and wind/ along with an escalating heavy rain
threat, see Hydro Discussion below. Storms will likely persist
until around sunrise Saturday before gradually weakening. See
the SPC Day 1 Slight Risk (Level 2 of 5) and any forthcoming
SWOMCDs for further details.

Saturday and Saturday Night..

Any remaining storms will be diminishing on early Saturday
morning. Shortwave upper ridging is then expected to develop by
Sat afternoon, with broad subsidence and little in the way of
forcing noted. As such, still expecting much of Saturday to be
dry, warm, and muggy, with highs again in the 80s. The
deterministic models and CAMs do indicate the possibility for
isolated/scattered late afternoon or evening storms, potentially
along any sfc or residual outflow boundaries. The most likely
location of storms is again across central and southern Iowa,
where the strong instability will reside, MLCAPE of 2000-3000
J/kg. Wind shear in that same area remains generally weak /less
than 20 kts/ so mainly pulse or perhaps multicell storms being
the most likely mode, with marginally severe hail or wet
microbursts possible. A SPC Day 2 Marginal Risk (Level 1 of 5)
appears reasonable for now. Any storms will be diurnally driven,
with activity waning after sunset.

&&

.LONG TERM /SATURDAY NIGHT THROUGH FRIDAY/...
Issued at 1214 PM CDT Fri Jun 5 2026

An upper level cutoff low across the southern plains on Sunday
morning will lift into the midwest by the afternoon and evening.
Deep moisture transport out of the gulf increases into Iowa,
especially southern Iowa. Scattered daytime showers and
thunderstorms may linger with renewed thunderstorms developing
in the evening and continuing overnight into Monday morning as
the upper low/trough tracks across Iowa. The threat for severe
storms appears low at this time with deeply saturated soundings
exhibiting very little instability (500 J/kg) or shear (20 kts
or less). The primary concern this period will be additional
heavy rain across southern Iowa, following heavy rain Thursday
and Friday nights. With PWATs near 2” and deep warm cloud layers
exceeding 4000m, expect efficient rain fall across southern into
central Iowa.

The upcoming week should be mainly dry, though few weak waves
skimming the area could bring renewed showers or thunderstorms
to the area. Heat builds through the week as the thermal ridge
expands and shifts into the midwest. While NBM guidance has
rockets up into the mid to upper 90s by the middle to end of
next week, this seems overdone from over mixing and with weak
waves thwarting the highest temperatures. NBM has been on the
highest end of the guidance envelope the past several cycles and
will continue to need nudging down unless the pattern changes.
Despite the overzealous NBM, temperatures will still be quite
warm and reach the upper 80s to low 90s. The next more organized
chance for precipitation arrives late in the week around
Thursday.

&&

.AVIATION /00Z TAFS THROUGH 00Z SUNDAY/...
Issued at 632 PM CDT Fri Jun 5 2026

Thunderstorms are expected to develop tonight which will impact
terminals in southern to central Iowa (KDSM and KOTM) while
northern terminals will not be impacted, though a stray shower
or two can't be ruled out in the north. With these
thunderstorms, KDSM and KOTM may have intermittent MVFR
conditions as thunderstorms move through. At northern terminals,
however, IFR fog may develop overnight tonight. After sunrise
and any fog dissipates, MVFR to VFR conditions are expected
across Iowa through the day tomorrow.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
None.

&&

SHORT TERM...05
LONG TERM...Fowle
AVIATION...Rotter

Hazardous Weather Outlook
National Weather Service Des Moines IA
Issued by National Weather Service Twin Cities/Chanhassen MN
137 PM CDT Fri Jun 5 2026

IAZ057>059-070>075-081>086-092>097-061845-
Audubon-Guthrie-Dallas-Cass-Adair-Madison-Warren-Marion-Mahaska-
Adams-Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-
Wayne-Appanoose-Davis-
137 PM CDT Fri Jun 5 2026

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

Scattered thunderstorms are expected to develop this evening and
overnight. The risk for severe weather is low/medium (2 out of
5). Locally heavy rainfall, gusty winds, large hail, and a
tornado or two are possible. A Flood Watch has been issued across
southern Iowa.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Continued thunderstorm chances continue through midweek next week
but the severe weather risk will be determined in the coming
days.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed.

IAZ004>007-015>017-023>028-033>039-044>050-060>062-061845-
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-Polk-Jasper-Poweshiek-
137 PM CDT Fri Jun 5 2026

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

Scattered thunderstorms are possible this evening and overnight.
The risk for severe weather is low (1 out of 5). Locally heavy
rainfall, gusty winds, large hail, and a tornado or two are
possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Continued thunderstorm chances continue through midweek next week
but the severe weather risk will be determined in the coming
days.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed.

MPX

Special Weather Statement
National Weather Service Des Moines IA
915 PM CDT Fri Jun 5 2026

IAZ073-074-060245-
Marion IA-Warren IA-
915 PM CDT Fri Jun 5 2026

...A STRONG THUNDERSTORM WILL IMPACT WESTERN MARION AND NORTHEASTERN
WARREN COUNTIES THROUGH 945 PM CDT...

At 915 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles west of Pleasantville, or 9 miles east of Indianola, moving
east at 35 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail and additional
         rainfall up to one inch.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible. Ponding of water on roadways, low visibilities,
         and rises in small streams and creeks.

Locations impacted include...
Knoxville, Monroe, Pleasantville, Knoxville Raceway, Lake Red Rock,
Hartford, Ackworth, Swan, Sandyville, Knoxville Municipal Airport,
and Elk Rock State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 4134 9352 4151 9347 4150 9344 4151 9341
      4149 9342 4150 9340 4149 9340 4150 9338
      4149 9336 4150 9335 4148 9334 4149 9333
      4151 9333 4151 9304 4120 9312
TIME...MOT...LOC 0215Z 282DEG 31KT 4141 9340

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Fowle

Preliminary Local Storm Report
National Weather Service Des Moines IA
947 PM CDT Fri Jun 5 2026

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

0945 PM     Funnel Cloud     2 NW Sandyville         41.39N 93.41W
06/05/2026                   Warren             IA   Public

            Received video of funnel cloud from social
            media.

&&

JR

Preliminary Local Storm Report
National Weather Service Des Moines IA
957 PM CDT Fri Jun 5 2026

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

0953 PM     Funnel Cloud     2 N Sandyville          41.39N 93.39W
06/05/2026                   Warren             IA   Trained Spotter

            Received phone call reporting funnel cloud
            and rotation.

&&

JR

Preliminary Local Storm Report
National Weather Service Des Moines IA
958 PM CDT Fri Jun 5 2026

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

0955 PM     Hail             Pleasantville           41.39N 93.27W
06/05/2026  E1.00 Inch       Marion             IA   Trained Spotter

            Received phone call from trained spotter
            reporting quarter sized hail falling in
            Pleasantville.

&&

JR

Preliminary Local Storm Report
National Weather Service Des Moines IA
959 PM CDT Fri Jun 5 2026

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

0955 PM     Funnel Cloud     Lorimor                 41.13N 94.05W
06/05/2026                   Union              IA   Public

            Received phone call reporting a funnel cloud
            on storm near Lorimor.

&&

JR