Alert archive / Missouri / Special Weather Statements in 2021

Special Weather Statement, NWS Springfield, MO

August 17, 2021Benton County, Missouri

NWS Springfield, MO issued this special weather statement at Aug 17, 2021, 3:21 PM CDT for Benton County, Missouri. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 17, 2021, 3:21 PM CDT (20:21 UTC)
Expired: Aug 17, 2021, 3:45 PM CDT
In force: 24 min
Issued by: NWS Springfield, MO
Hail: 0.00 in
Wind: 50

County Benton County, MO

The radar

The Pleasant Hill radar (KEAX), 110 km from the middle of the area, began a volume at 20:21 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

Springfield, MO (KSGF), launched 12:00Z, 8.4 hours before the alert went out and 165 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: 430 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 1276 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

242 
WWUS83 KSGF 172021
SPSSGF

Special Weather Statement
National Weather Service Springfield MO
321 PM CDT Tue Aug 17 2021
 
MOZ055-172045-
Benton MO-
321 PM CDT Tue Aug 17 2021

...A strong thunderstorm will impact portions of central Benton
County through 345 PM CDT...

At 321 PM CDT, Doppler radar was tracking a strong thunderstorm over
Warsaw, moving east at 10 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Truman State Park...              Truman Lake...
Warsaw...                         Lincoln...
Edmonson...                       Lakeview Heights...
Hastain...                        Zora...
Whitakerville...                  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

If on or near Lake of the Ozarks, get out of the water and move 
indoors or inside a vehicle. Remember, lightning can strike out to 
10 miles from the parent thunderstorm. If you can hear thunder, you 
are close enough to be struck by lightning. Move to safe shelter 
now! Do not be caught on the water in a thunderstorm.

&&

LAT...LON 3832 9307 3822 9308 3820 9309 3820 9340
      3836 9344 3846 9312
TIME...MOT...LOC 2021Z 270DEG 7KT 3828 9334 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

$$

Terry

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 3:37 PM CDT	Special Weather Statement	SGF	Morgan	23 min
Aug 17, 4:28 PM CDT	Severe Thunderstorm Warning	SGF	St. Clair	47 min

Nearby

Special Weather Statements in Missouri, 2021 Every special weather statement in 2021

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.