Alert archive / Missouri / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 291, NWS Springfield, MO

July 18, 20234 counties in Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 18, 2023, 9:27 AM CDT for 4 counties in Missouri. It was in force for 48 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 18, 2023, 9:27 AM CDT (14:27 UTC)
Expired
Jul 18, 2023, 10:15 AM CDT
In force
48 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Maries County, MO, Miller County, MO, Phelps County, MO, Pulaski County, MO

The radar

The St Louis radar (KLSX), 144 km from the middle of the area, began a volume at 14:27 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 18, 8:59 AM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 2.5 hours before the alert went out and 196 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2023-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2565 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2023-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2565 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
1329 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
275 m²/s²
Significant tornado parameter
0.0
Supercell composite
21.4

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 18, 5:55 AM CDT, 3 hours 32 minutes earlier.

Area forecast discussion, Jul 18, 5:55 AM CDT, 3 hours 32 minutes before
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Hazardous weather outlook, Jul 18, 5:54 AM CDT, 3 hours 33 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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In the hours before

Special weather statement, Jul 18, 6:59 AM CDT, 2 hours 28 minutes before
Special Weather Statement
National Weather Service Springfield MO
659 AM CDT Tue Jul 18 2023

MOZ080-081-091-092-181230-
Dallas MO-Wright MO-Webster MO-Laclede MO-
659 AM CDT Tue Jul 18 2023

...A strong thunderstorm will impact portions of northern Webster,
southern Dallas, northwestern Wright and southwestern Laclede
Counties through 730 AM CDT...

At 659 AM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northeast of Fair Grove, or 9 miles south of Buffalo, moving
east at 40 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Marshfield, Morgan, Conway, Niangua, Phillipsburg, Olive, Elkland,
Rader, Foose, March and Charity.

This includes Interstate 44 between mile markers 98 and 116.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3738 9308 3742 9308 3742 9316 3746 9318
      3756 9318 3762 9315 3755 9271 3752 9258
      3723 9272
TIME...MOT...LOC 1159Z 292DEG 35KT 3750 9308

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

Soria
Special weather statement, Jul 18, 7:48 AM CDT, 1 hour 39 minutes before
Special Weather Statement
National Weather Service Springfield MO
748 AM CDT Tue Jul 18 2023

MOZ055-056-068-069-181315-
Camden MO-Benton MO-Hickory MO-Morgan MO-
748 AM CDT Tue Jul 18 2023

...A strong thunderstorm will impact portions of northeastern
Hickory, Benton, northwestern Camden and southwestern Morgan Counties
through 815 AM CDT...

At 748 AM CDT, Doppler radar was tracking a strong thunderstorm over
Warsaw, moving southeast at 45 mph.

HAZARD...Wind gusts up to 50 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.

Locations impacted include...
Truman State Park, Truman Lake, Lake of The Ozarks, Warsaw, Lincoln,
Macks Creek, Climax Springs, Palo Pinto, Lakeview Heights, Zora,
Fristoe, Knobby, Racket, Edmonson, Edwards, Barnumton, Hastain and
Whitakerville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3838 9312 3815 9282 3793 9300 3808 9333
      3817 9350 3820 9350 3821 9353 3851 9351
      3852 9348
TIME...MOT...LOC 1248Z 302DEG 40KT 3827 9336

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Soria

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 7:08 PM CDTSevere Thunderstorm WarningSGFTexas, Wright52 min
Jul 17, 7:14 PM CDTSevere Thunderstorm Warning Considerable damage threatSGFSt. Clair45 min
Jul 17, 7:22 PM CDTSevere Thunderstorm Warning Considerable damage threatSGFDouglas, Webster, Wright53 min
Jul 17, 7:27 PM CDTSevere Thunderstorm Warning Considerable damage threatSGFBenton, Hickory48 min
Jul 17, 7:42 PM CDTSevere Thunderstorm WarningSGFTaney30 min
Jul 17, 7:51 PM CDTSevere Thunderstorm Warning Considerable damage threatSGFDallas, Hickory, Polk36 min
Jul 17, 7:55 PM CDTSevere Thunderstorm WarningSGFDouglas, Ozark28 min
Jul 17, 8:15 PM CDTSpecial Weather StatementSGFTaney30 min
Jul 18, 6:59 AM CDTSpecial Weather StatementSGFWebster31 min
Jul 18, 7:48 AM CDTSpecial Weather StatementSGFBenton27 min
Jul 18, 8:07 AM CDTSevere Thunderstorm WarningSGFBenton, Morgan38 min
Jul 18, 8:50 AM CDTSevere Thunderstorm WarningSGFCamden, Miller, Morgan, Pulaski40 min
Jul 18, 8:59 AM CDTSevere Thunderstorm WarningSGFMaries, Miller33 min
Jul 18, 9:55 AM CDTSpecial Weather StatementSGFPhelps, Pulaski35 min
Jul 18, 11:10 AM CDTSpecial Weather StatementSGFMiller35 min
Jul 18, 11:20 AM CDTSpecial Weather StatementSGFMorgan25 min
Jul 18, 11:55 AM CDTFlash Flood WarningSGFCamden, Maries, Miller, Morgan, Pulaski6 hr
Jul 18, 2:03 PM CDTAreal Flood AdvisorySGFDent, Maries, Phelps, Texas6 hr
Jul 18, 2:53 PM CDTSpecial Weather StatementSGFDent52 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2023Every severe thunderstorm warning in 2023

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.