Alert archive / Missouri / Areal Flood Warnings in 2021

Areal Flood Warning 51, NWS Springfield, MO

May 18, 2021Dade County, Missouri

NWS Springfield, MO issued this areal flood warning at May 18, 2021, 4:55 AM CDT for Dade County, Missouri. It was in force for 8 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: May 18, 2021, 4:55 AM CDT (09:55 UTC)
Expired: May 18, 2021, 12:51 PM CDT
In force: 8 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

County Dade County, MO

The radar

The Springfield radar (KSGF), 45 km from the middle of the area, began a volume at 09:55 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 00:00Z, 9.9 hours before the alert went out and 59 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: 371 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 501 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 211 m²/s²
0-3 km storm-relative helicity: 303 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal 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 areal flood warning went out at May 18, 2:49 AM CDT, 2 hours 6 minutes earlier.

Area forecast discussion, May 18, 2:49 AM CDT, 2 hours 6 minutes before

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Hazardous weather outlook, May 18, 3:52 AM CDT, 1 hour 3 minutes before

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In the hours before

Local storm report, May 17, 11:22 PM CDT, 5 hours 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1122 PM CDT MON MAY 17 2021

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

1121 PM     FLASH FLOOD      MARIONVILLE             37.00N 93.64W
05/17/2021                   LAWRENCE           MO   FIRE DEPT/RESCUE

            WIDESPREAD FLASH FLOODING WAS ONGOING IN
            MARIONVILLE. 5 HOMES WERE FLOODED, WHILE
            NUMEROUS WATER RESCUES WERE ALSO ONGOING.
            HIGHWAY 60 AND COUNTY ROAD 1140 WAS FLOODED,
            WHICH CONTRIBUTED TO A VEHICLE ACCIDENT WITH
            MULTIPLE INJURIES.

&&

CRAMER

Local storm report, May 17, 11:47 PM CDT, 5 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1147 PM CDT MON MAY 17 2021

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

1146 PM     FLASH FLOOD      1 N VERONA              36.98N 93.80W
05/17/2021                   LAWRENCE           MO   LAW ENFORCEMENT

            WATER RESCUE IN PROGRESS. 5 PEOPLE ON A ROOF
            OF A HOUSE ESCAPING FLASH FLOODING.

&&

CRAMER

Local storm report, May 18, 1:04 AM CDT, 3 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
104 AM CDT TUE MAY 18 2021

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

1240 AM     FLASH FLOOD      MONETT                  36.92N 93.92W
05/18/2021                   BARRY              MO   911 CALL CENTER

            LAWRENCE COUNTY DISPATCH REPORTS THAT KELLY
            CREEK IN MONETT IS OUT OF ITS BANKS WITH
            EVACUATIONS ONGOING.

&&

TITUS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:03 PM CDT	Flash Flood Warning	SGF	Greene, Polk	6 hr
May 17, 8:35 PM CDT	Flash Flood Warning	SGF	Barry, Christian, Lawrence, Stone	6 hr
May 17, 9:00 PM CDT	Flash Flood Warning	SGF	Greene, Polk	4 hr
May 17, 9:59 PM CDT	River Flood Warning	SGF	Cedar	27 hr
May 17, 10:10 PM CDT	Flash Flood Warning	SGF	Lawrence	6 hr
May 17, 10:58 PM CDT	Flash Flood Warning	SGF	Barry, Lawrence	6 hr
May 18, 12:53 AM CDT	Areal Flood Warning	SGF	Greene, Polk	12 hr
May 18, 2:21 AM CDT	Areal Flood Warning	SGF	Barry, Christian, Lawrence, Stone	12 hr
May 18, 3:01 AM CDT	River Flood Warning	SGF	St. Clair	5 days
May 18, 7:34 AM CDT	River Flood Warning	SGF	Cedar	7 hr
May 18, 5:16 PM CDT	River Flood Warning	SGF	Vernon	40 hr

Nearby

Areal Flood Warnings in Missouri, 2021 Every areal flood warning 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.