Alert archive / Missouri / Areal Flood Warnings in 2011

Areal Flood Warning 35, NWS Springfield, MO

May 20, 20114 counties in Missouri

NWS Springfield, MO issued this areal flood warning at May 20, 2011, 2:54 PM 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: May 20, 2011, 2:54 PM CDT (19:54 UTC)
Expired: May 20, 2011, 9:00 PM CDT
In force: 6 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

Counties Camden County, MO, Dallas County, MO, Miller County, MO, Morgan County, MO

The radar

The Springfield radar (KSGF), 109 km from the middle of the area, began a volume at 19:53 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, 7.9 hours before the alert went out and 160 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: 537 J/kg
Mixed-layer CIN: -280 J/kg
Mixed-layer LCL: 940 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 222 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 20, 2:31 PM CDT, 23 minutes earlier.

Area forecast discussion, May 20, 2:31 PM CDT, 23 minutes before

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Hazardous weather outlook, May 20, 12:50 PM CDT, 2 hours 4 minutes before

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In the hours before

Special weather statement, May 20, 10:47 AM CDT, 4 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1047 AM CDT FRI MAY 20 2011

MOZ094-102-201615-
BARRY MO-LAWRENCE MO-
1047 AM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ALERT FOR LAWRENCE AND NORTHWESTERN BARRY
COUNTIES UNTIL 1115 AM CDT...

AT 1046 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 3 MILES NORTH OF MONETT...MOVING NORTH AT 45
MPH. NICKEL SIZE HAIL...AND WINDS AROUND 50 MPH ARE EXPECTED WITH
THIS STORM.

THIS STORM WILL BE NEAR...
  HOBERG BY 1055 AM CDT.
  STOTTS CITY AND MOUNT VERNON BY 1100 AM CDT.
  MILLER AND 9 MILES EAST OF RED OAK BY 1110 AM CDT.

INTERSTATE 44 BETWEEN MILE MARKERS 34 AND 57 WILL ALSO BE IMPACTED BY
THIS STORM.

LAT...LON 3723 9402 3723 9363 3682 9382 3683 9405
TIME...MOT...LOC 1548Z 194DEG 38KT 3699 9392

Special weather statement, May 20, 10:53 AM CDT, 4 hours 1 minute before

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Local storm report, May 20, 11:04 AM CDT, 3 hours 50 minutes before

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Special weather statement, May 20, 1:48 PM CDT, 1 hour 6 minutes before

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Local storm report, May 20, 1:59 PM CDT, 55 minutes before

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Special weather statement, May 20, 2:20 PM CDT, 34 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
May 19, 7:54 PM CDT	Areal Flood Warning	SGF	Camden, Maries, Miller, Morgan, Phelps, Pulaski	6 hr
May 20, 7:41 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper	34 min
May 20, 8:13 AM CDT	Special Weather Statement	SGF	Barton, Jasper	47 min
May 20, 8:19 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Vernon	41 min
May 20, 8:22 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper	38 min
May 20, 8:33 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Cedar, Dade, Jasper, Lawrence	42 min
May 20, 8:38 AM CDT	Flash Flood Warning	SGF	Barton, Jasper, Newton	4 hr
May 20, 9:03 AM CDT	Flash Flood Warning	SGF	Barton, Cedar, Dade, Jasper, Lawrence, Vernon	4 hr
May 20, 9:20 AM CDT	River Flood Warning	SGF	Vernon	42 hr
May 20, 9:20 AM CDT	River Flood Warning	SGF	Vernon	13 hr
May 20, 9:32 AM CDT	Special Weather Statement	SGF	St. Clair	43 min
May 20, 10:47 AM CDT	Special Weather Statement	SGF	Lawrence	28 min
May 20, 10:51 AM CDT	Flash Flood Warning	SGF	Cedar, Hickory, Polk, St. Clair	2 hr
May 20, 10:53 AM CDT	Special Weather Statement	SGF	Benton, Hickory	52 min
May 20, 11:05 AM CDT	Flash Flood Watch	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 28 more	40 hr
May 20, 1:48 PM CDT	Special Weather Statement	SGF	Christian, Taney	42 min
May 20, 2:20 PM CDT	Special Weather Statement	SGF	Oregon	40 min
May 20, 2:41 PM CDT	Areal Flood Warning	SGF	Christian, Stone, Taney	6 hr
May 20, 2:56 PM CDT	Special Weather Statement	SGF	Oregon	49 min
May 20, 3:05 PM CDT	Areal Flood Warning	SGF	Benton, Cedar, Dade, Hickory, Polk, St. Clair	6 hr
May 20, 3:41 PM CDT	River Flood Warning	SGF	Cedar	41 hr
May 20, 3:41 PM CDT	River Flood Warning	SGF	Bates, Vernon	19 hr
May 20, 7:35 AM CDT	Special Weather Statement	SGF	Cherokee	25 min

Nearby

Areal Flood Warnings in Missouri, 2011 Every areal flood warning in 2011

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.