Alert archive / Missouri / Flash Flood Warnings in 2023

Flash Flood Warning 58, NWS Springfield, MO

August 12, 20234 counties in Missouri

NWS Springfield, MO issued this flash flood warning at Aug 12, 2023, 6:29 AM CDT for 4 counties in Missouri. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 12, 2023, 6:29 AM CDT (11:29 UTC)
Expired: Aug 12, 2023, 12:30 PM CDT
In force: 6 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

Counties Benton County, MO, Maries County, MO, Miller County, MO, Morgan County, MO

The radar

The Springfield radar (KSGF), 134 km from the middle of the area, began a volume at 11:33 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 00:00Z, 11.5 hours before the alert went out and 273 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: 3508 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1886 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 14.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 12, 4:27 AM CDT, 2 hours 2 minutes earlier.

Area forecast discussion, Aug 12, 4:27 AM CDT, 2 hours 2 minutes before

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Hazardous weather outlook, Aug 12, 3:43 AM CDT, 2 hours 46 minutes before

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In the hours before

Special weather statement, Aug 12, 1:54 AM CDT, 4 hours 35 minutes before

Special Weather Statement
National Weather Service Springfield MO
154 AM CDT Sat Aug 12 2023

KSZ097-101-120745-
Cherokee KS-Crawford KS-
154 AM CDT Sat Aug 12 2023

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN CHEROKEE AND CRAWFORD
COUNTIES THROUGH 245 AM CDT...

At 153 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of St. Paul, moving east at 35 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 hail damage to vegetation is
         possible.

Locations impacted include...
Pittsburg, Frontenac, Columbus, Girard, Arma, Cherokee, Weir,
Sherman, Mulberry, Scammon, Chicopee, Mccune, Franklin, Walnut, West
Mineral, Roseland, Beulah, Croweburg, Yale and Carona.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3767 9509 3761 9462 3713 9462 3725 9508
      3738 9507 3739 9509
TIME...MOT...LOC 0653Z 279DEG 32KT 3742 9514

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

Melto

Special weather statement, Aug 12, 2:53 AM CDT, 3 hours 36 minutes before

Special Weather Statement
National Weather Service Springfield MO
253 AM CDT Sat Aug 12 2023

MOZ077-088-120830-
Barton MO-Jasper MO-
253 AM CDT Sat Aug 12 2023

...A STRONG THUNDERSTORM WILL IMPACT BARTON AND NORTHERN JASPER
COUNTIES THROUGH 330 AM CDT...

At 253 AM CDT, Doppler radar was tracking a strong thunderstorm near
Liberal, or 10 miles northwest of Lamar, moving east at 35 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 hail damage to vegetation is
         possible.

Locations impacted include...
Prairie State Park, Lamar, Jasper, Golden City, Liberal, Mulberry,
Nashville, Mindenmines, Arcadia, Carytown, Lamar Heights, Irwin,
Burgess, Milford, Oakton, Iantha, Oskaloosa, Dudenville, Verdella and
Kenoma.

This includes Interstate 49 between mile markers 51 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3765 9462 3765 9428 3764 9408 3730 9408
      3729 9405 3725 9405 3724 9406 3733 9462
TIME...MOT...LOC 0753Z 270DEG 30KT 3757 9444

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

Melto

Local storm report, Aug 12, 4:26 AM CDT, 2 hours 3 minutes before

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Special weather statement, Aug 12, 4:56 AM CDT, 1 hour 33 minutes before

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Special weather statement, Aug 12, 5:56 AM CDT, 33 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 2:53 AM CDT	Special Weather Statement	SGF	Barton	37 min
Aug 12, 3:11 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Cedar, Dade, Jasper, Lawrence	49 min
Aug 12, 4:56 AM CDT	Special Weather Statement	SGF	Miller, Morgan	34 min
Aug 12, 5:56 AM CDT	Special Weather Statement	SGF	Camden, Miller	34 min
Aug 12, 1:54 AM CDT	Special Weather Statement	SGF	Crawford	51 min
Aug 12, 2:09 AM CDT	Severe Thunderstorm Warning	SGF	Crawford	51 min
Aug 12, 9:54 AM CDT	Special Weather Statement	SGF	Bourbon	36 min

Nearby

Flash Flood Warnings in Missouri, 2023 Every flash flood 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.