Alert archive / Missouri / Areal Flood Warnings in 2012

Areal Flood Warning 10, NWS Springfield, MO

March 20, 20127 counties in Missouri

NWS Springfield, MO issued this areal flood warning at Mar 20, 2012, 10:34 PM CDT for 7 counties in Missouri. It was in force for 12 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: Mar 20, 2012, 10:34 PM CDT (03:34 UTC)
Expired: Mar 21, 2012, 11:00 AM CDT
In force: 12 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

Counties Christian County, MO, Douglas County, MO, Ozark County, MO, Stone County, MO, Taney County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 59 km from the middle of the area, began a volume at 03:34 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, 3.6 hours before the alert went out and 84 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: 3 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 495 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 81 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 Mar 20, 10:18 PM CDT, 16 minutes earlier.

Area forecast discussion, Mar 20, 10:18 PM CDT, 16 minutes before

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Hazardous weather outlook, Mar 20, 10:07 PM CDT, 27 minutes before

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In the hours before

Local storm report, Mar 20, 4:46 PM CDT, 5 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
446 PM CDT TUE MAR 20 2012

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

0200 PM     FLOOD            4 N JASPER              37.40N 94.31W
03/20/2012                   BARTON             MO   DEPT OF HIGHWAYS

            MODOT REPORTS HWY 126...ONE HALF MILE FROM U.S. 71 IS
            FLOODED.

0240 PM     FLOOD            2 N STOTESBURY          38.00N 94.57W
03/20/2012                   VERNON             MO   DEPT OF HIGHWAYS

            MODOT REPORTS HWY V AT RT D IS FLOODED AND CLOSED.

&&

BOXELL

Special weather statement, Mar 20, 6:08 PM CDT, 4 hours 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
608 PM CDT TUE MAR 20 2012

MOZ105-202345-
OZARK MO-
608 PM CDT TUE MAR 20 2012

...SIGNIFICANT WEATHER ADVISORY FOR OZARK COUNTY UNTIL 645 PM CDT...

AT 605 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 16 MILES SOUTHWEST
OF UDALL TO 10 MILES SOUTHEAST OF PONTIAC TO 9 MILES SOUTHEAST OF
PONTIAC...MOVING NORTH AT 50 MPH. WINDS AROUND 45 MPH ARE EXPECTED
WITH THESE STORMS.

PEOPLE IN OZARK COUNTY...INCLUDING GAINESVILLE...SHOULD MONITOR THE
WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE
PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

LAT...LON 3649 9267 3681 9263 3679 9211 3654 9212
      3649 9213
TIME...MOT...LOC 2308Z 190DEG 44KT 3637 9237 3647 9244
          3645 9251

WISE

Special weather statement, Mar 20, 7:12 PM CDT, 3 hours 22 minutes before

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Local storm report, Mar 20, 7:26 PM CDT, 3 hours 8 minutes before

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Special weather statement, Mar 20, 7:27 PM CDT, 3 hours 7 minutes before

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Local storm report, Mar 20, 10:16 PM CDT, 18 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
Mar 20, 7:12 PM CDT	Special Weather Statement	SGF	Howell	48 min
Mar 20, 7:27 PM CDT	Special Weather Statement	SGF	Wright	33 min
Mar 20, 10:50 PM CDT	Areal Flood Warning	SGF	Camden, Dallas, Laclede, Miller, Morgan, Pulaski	12 hr
Mar 21, 8:47 AM CDT	River Flood Warning	SGF	Pulaski	3 days
Mar 21, 8:47 AM CDT	River Flood Warning	SGF	Phelps	4 days
Mar 21, 10:55 AM CDT	Areal Flood Warning	SGF	Barton, Jasper, McDonald, Newton, Vernon	24 hr
Mar 21, 11:04 AM CDT	Areal Flood Warning	SGF	Barry, Benton, Camden, Cedar, Christian, Dade and 11 more	24 hr
Mar 21, 11:09 AM CDT	Areal Flood Warning	SGF	Douglas, Howell, Laclede, Ozark, Pulaski, Texas and 1 more	48 hr

Nearby

Areal Flood Warnings in Missouri, 2012 Every areal flood warning in 2012

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.