Tornado Warning 1, NWS Des Moines, IA

271 
WWUS53 KDMX 052134
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
334 PM CST Sat Mar 5 2022

IAC009-029-052144-
/O.CAN.KDMX.TO.W.0001.000000T0000Z-220305T2145Z/
Cass IA-Audubon IA-
334 PM CST Sat Mar 5 2022

...THE TORNADO WARNING FOR CENTRAL CASS AND SOUTH CENTRAL AUDUBON
COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CST for southwestern
and west central Iowa.

LAT...LON 4130 9516 4157 9493 4143 9471 4116 9512
      4116 9516
TIME...MOT...LOC 2133Z 222DEG 44KT 4130 9506 

$$

Martin

Area Forecast Discussion
National Weather Service Des Moines IA
249 PM CST Sat Mar 5 2022

.DISCUSSION.../Tonight through Saturday/
Issued at 248 PM CST Sat Mar 5 2022

Key Messages:

- Severe weather possible through this evening, then windy at
  times tonight.
- Light snow Sunday night into Monday morning, mainly southeast.
- Potential widespread snowfall around Thursday.

An active early spring weather pattern is underway. A large 500 mb
trough stretches from the plains of central Canada southwestward
down the Rockies and into the Las Vegas region. A strong leading
impulse that ejected out of the trough has closed off as its
moving near the Nebraska/South Dakota border this afternoon. At
the surface a cyclone has rapidly developed on the leading flank
of the 500 mb trough and is rocketing northeastward from
northeastern Kansas into Iowa, producing several waves of
thunderstorms with a potential for severe weather and tornadoes
from southwestern into central and south central Iowa in the next
several hours. The surface low and its trailing cold front and
attendant storms should sweep out of our service area later in the
evening, likely exiting our east around 02Z or so, after which
strong northwest winds will spread across the region, pumping in
colder air with some light wraparound precipitation in the form of
a wintry mix briefly affecting our northwestern and northern
counties tonight, but with little accumulation. Ongoing wind
advisory looks solid, but did push back the start time a couple
hours due to a bit slower evolution of the system than previously
forecast.

Sunday will be cool but quiet in Iowa, but by late in the day the
bulk of the vorticity associated with the southern extent of the
500 mb trough will have moved from the southwestern U.S. up into
the High Plains, and will subsequently scrape across Iowa and
Missouri later Sunday night into Monday morning. As it does so, it
will spread light precipitation across much of the state, but
mainly the southeast two thirds or so. Forecast soundings show
snow much more persistently today, as opposed to previous runs
indicating more potential for freezing rain at times, and have
trended the forecast to all snow for the event. Even so,
accumulations are expected to remain light, around an inch or two
in our southeast. The impacts should be minor, but if the snow
lingers into the Monday morning commute it may result in some
slick roads.

From midday Monday through Tuesday night a respite is in store,
with benign and dry weather and temperatures rebounding into the
40s on Tuesday afternoon. By Wednesday however, a large 500 mb
gyre will be set up over Hudson Bay, with a broad trough swinging
around its southwest flank into the northern U.S. Rockies. As this
rotates eastward it will affect our region later in the week, with
long range models painting a swath of accumulating snowfall right
across Iowa between Wednesday night and Thursday night. Forecast
temperatures and soundings indicate snow as the most likely
precipitation type, but there may be an opportunity for a rain mix
in southern Iowa if temperatures warm enough on Thursday. Will
refine the forecast for this system in the coming days.
Regardless, the passage of the aforementioned trough and
subsequent northwesterly steering flow will send temperatures
plummeting by the end of the week, with Friday afternoon highs
likely only in the 20s to perhaps lower 30s - well below seasonal
normals. Winter is not done yet folks.

&&

.AVIATION.../For the 18Z TAFS through 18Z Sunday afternoon/
Issued at 1138 AM CST Sat Mar 5 2022

Scattered thunderstorms and areas of low ceilings will produce
periodic IFR or lower conditions at the terminals this afternoon
and evening, which are described using VC and TEMPO groups in the
18Z TAFs. Amendments are likely based on short term convective
trends. The storms will move out around 00-02Z or so, after which
lingering MVFR ceilings will affect primarily the northern
terminals tonight before clearing out. Strong WNW winds are also
forecast overnight and may create LLWS and crosswind issues on
some runways, especially those with N-S orientation.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
Wind Advisory from 8 PM this evening to 3 AM CST Sunday for
IAZ034>039-044>050-057>062-070>075-081>086-092>097.

&&

DISCUSSION...Lee
AVIATION...Lee

Hazardous Weather Outlook
National Weather Service Des Moines IA
1225 PM CST Sat Mar 5 2022

IAZ004>007-015>017-023>028-033>039-044>050-057-058-070-061830-
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-Cass-
1225 PM CST Sat Mar 5 2022

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

There is a slight risk for severe weather later this afternoon
into early this evening. Damaging wind gusts, tornadoes, and hail
will be possible during this timeframe.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Rainfall from the Saturday storms will runoff into area rivers
and cause within bank rises. Where river ice remains, particularly
over northern Iowa, it is possible ice jams could develop and
cause localized flooding Sunday or early next week.

A wintry mix and snow is possible Sunday night into Monday. At
least minor snow accumulations are possible with the highest
confidence in accumulations over southeastern Iowa.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed this afternoon and early evening.

IAZ059>062-071>075-081>086-092>097-061830-
Dallas-Polk-Jasper-Poweshiek-Adair-Madison-Warren-Marion-Mahaska-
Adams-Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-
Wayne-Appanoose-Davis-
1225 PM CST Sat Mar 5 2022

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

There is an enhanced risk for severe weather later this afternoon
into early this evening. Damaging wind gusts, tornadoes, and hail
will be possible during this timeframe.

A Wind Advisory is in effect for central and southern Iowa
tonight. Please refer to the National Weather Service website at
weather.gov/desmoines for further details.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Rainfall from the Saturday storms will runoff into area rivers
and cause within bank rises. Where river ice remains, particularly
over northern Iowa, it is possible ice jams could develop and
cause localized flooding Sunday or early next week.

A wintry mix and snow is possible Sunday night into Monday. At
least minor snow accumulations are possible with the highest
confidence in accumulations over southeastern Iowa.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed this afternoon and early evening.

Special Weather Statement
National Weather Service Des Moines IA
151 PM CST Sat Mar 5 2022

IAZ048-049-061-052015-
Story IA-Jasper IA-Marshall IA-
151 PM CST Sat Mar 5 2022

...A strong thunderstorm will impact portions of southeastern Story,
Marshall and northwestern Jasper Counties through 215 PM CST...

At 151 PM CST, Doppler radar was tracking a strong thunderstorm near
Baxter, or 10 miles northwest of Newton, moving northeast at 75 mph.

HAZARD...Winds in excess of 30 mph and nickel size hail.

SOURCE...Radar indicated.

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

This strong thunderstorm will be near...
  Baxter around 155 PM CST.

Other locations in the path of this storm include Marshalltown.

This includes Interstate 80 between mile markers 154 and 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4165 9322 4174 9335 4221 9311 4221 9277
      4217 9277 4217 9276 4211 9277 4187 9277
TIME...MOT...LOC 1951Z 225DEG 65KT 4178 9322

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH

Krull

Special Weather Statement
National Weather Service Des Moines IA
208 PM CST Sat Mar 5 2022

IAZ027-028-038-039-052100-
Black Hawk IA-Bremer IA-Grundy IA-Butler IA-
208 PM CST Sat Mar 5 2022

...A strong thunderstorm will impact portions of northern Black Hawk,
Bremer, northern Grundy and southeastern Butler Counties through 300
PM CST...

At 208 PM CST, Doppler radar was tracking a strong thunderstorm over
Grundy Center, moving northeast at 60 mph.

HAZARD...Winds in excess of 30 mph and penny size hail.

SOURCE...Radar indicated.

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

This strong thunderstorm will be near...
  Dike around 215 PM CST.
  Hudson and Uni-Dome And McLeod Center around 225 PM CST.

Other locations in the path of this storm include Cedar Falls,
Waterloo Municipal Airport, Denver and Tripoli.

This includes Interstate 380 near mile marker 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 800 PM CST for central Iowa.

&&

LAT...LON 4231 9261 4230 9272 4230 9277 4240 9292
      4291 9238 4291 9227 4278 9208 4259 9208
TIME...MOT...LOC 2008Z 221DEG 52KT 4238 9272

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...30 MPH

Krull

Special Weather Statement
National Weather Service Des Moines IA
217 PM CST Sat Mar 5 2022

IAZ050-052045-
Tama IA-
217 PM CST Sat Mar 5 2022

...A strong thunderstorm will impact portions of Tama County through
245 PM CST...

At 217 PM CST, Doppler radar was tracking a strong thunderstorm near
Meskwaki Casino, or 8 miles east of Marshalltown, moving northeast at
70 mph.

HAZARD...Winds in excess of 30 mph and nickel size hail.

SOURCE...Radar indicated.

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

This strong thunderstorm will be near...
  Traer around 235 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 800 PM CST for central Iowa.

&&

LAT...LON 4192 9276 4226 9277 4230 9270 4230 9230
      4207 9230
TIME...MOT...LOC 2017Z 228DEG 59KT 4203 9275

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH

Krull

Special Weather Statement
National Weather Service Des Moines IA
235 PM CST Sat Mar 5 2022

IAZ038-039-050-052100-
Black Hawk IA-Tama IA-Grundy IA-
235 PM CST Sat Mar 5 2022

...A strong thunderstorm will impact portions of southeastern Black
Hawk, northeastern Tama and east central Grundy Counties through 300
PM CST...

At 234 PM CST, Doppler radar was tracking a strong thunderstorm over
Traer, or 17 miles north of Toledo, moving northeast at 60 mph.

HAZARD...Half inch hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Waterloo, Evansdale, Jesup, La Porte City, Hudson, Traer, Reinbeck,
Dysart, Elk Run Heights, Crossroads Mall, Washburn, Dunkerton,
Raymond, Gilbertville and Tf Clark State Park.

This includes Interstate 380 between mile markers 56 and 73.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 800 PM CST for central Iowa.

&&

LAT...LON 4230 9230 4217 9230 4210 9247 4230 9266
      4264 9208 4247 9208 4247 9206 4230 9206
TIME...MOT...LOC 2034Z 229DEG 53KT 4223 9246

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH

Martin

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
241 PM CST SAT MAR 5 2022

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

0225 PM     HAIL             1 N CEDAR FALLS         42.53N 92.45W
03/05/2022  E0.50 INCH       BLACK HAWK         IA   PUBLIC

            SOCIAL MEDIA.

&&

AK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
258 PM CST SAT MAR 5 2022

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

0206 PM     HAIL             HAVERHILL               41.94N 92.96W
03/05/2022  E1.00 INCH       MARSHALL           IA   PUBLIC

            SOCIAL MEDIA PICTURE OF QUARTER SIZE HAIL.

&&