Alert archive / Missouri / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 352, NWS Springfield, MO

July 11, 2024St. Clair County, Vernon County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 11, 2024, 6:46 PM CDT for St. Clair County, Vernon County, Missouri. It was in force for 44 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: Jul 11, 2024, 6:46 PM CDT (23:46 UTC)
Expired: Jul 11, 2024, 7:30 PM CDT
In force: 44 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties St. Clair County, MO, Vernon County, MO

The radar

The Springfield radar (KSGF), 98 km from the middle of the area, began a volume at 23:48 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 nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.8 hours before the alert went out and 181 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 402 J/kg
Mixed-layer CIN: -248 J/kg
Mixed-layer LCL: 1292 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

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 Springfield, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 11, 2:35 PM CDT, 4 hours 11 minutes earlier.

Area forecast discussion, Jul 11, 2:35 PM CDT, 4 hours 11 minutes before

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Hazardous weather outlook, Jul 11, 2:33 PM CDT, 4 hours 13 minutes before

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In the hours before

Special weather statement, Jul 11, 5:44 PM CDT, 1 hour 2 minutes before

Special Weather Statement
National Weather Service Springfield MO
544 PM CDT Thu Jul 11 2024

MOZ067-078-112315-
Cedar MO-St. Clair MO-
544 PM CDT Thu Jul 11 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN CEDAR AND
SOUTHWESTERN ST. CLAIR COUNTIES THROUGH 615 PM CDT...

At 543 PM CDT, Doppler radar was tracking a strong thunderstorm over
El Dorado Springs, moving east at 10 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
El Dorado Springs, Roscoe, Caplinger Mills, Cedar Springs, and
Tiffin.

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 3804 9379 3777 9376 3779 9406 3787 9407
      3795 9407 3797 9406
TIME...MOT...LOC 2243Z 264DEG 8KT 3789 9398

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

Camden

Special weather statement, Jul 11, 6:35 PM CDT, 11 minutes before

Special Weather Statement
National Weather Service Springfield MO
635 PM CDT Thu Jul 11 2024

MOZ070-120000-
Pulaski MO-
635 PM CDT Thu Jul 11 2024

...STRONG THUNDERSTORMS WILL IMPACT SOUTHERN PULASKI COUNTY THROUGH
700 PM CDT...

At 635 PM CDT, Doppler radar was tracking a cluster of strong
thunderstorms near Fort Leonard Wood, moving southeast at 15 mph.

HAZARD...Wind gusts of 50 to 55 mph and half inch hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Fort Leonard Wood, Waynesville, St. Robert, and Laquey.

This includes Interstate 44 between mile markers 144 and 162.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3780 9203 3765 9203 3760 9219 3760 9225
      3765 9225 3769 9235 3776 9242 3777 9241
      3789 9227
TIME...MOT...LOC 2335Z 317DEG 15KT 3774 9227

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH

Camden

The office that day

Everything else NWS Springfield, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 5:44 PM CDT	Special Weather Statement	SGF	St. Clair	31 min
Jul 11, 6:35 PM CDT	Special Weather Statement	SGF	Pulaski	25 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2024 Every severe thunderstorm warning in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.