Alert archive / Missouri / Special Weather Statements in 2021

Special Weather Statement, NWS Springfield, MO

March 12, 2021Polk County, Missouri

NWS Springfield, MO issued this special weather statement at Mar 12, 2021, 6:52 PM CST for Polk County, Missouri. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 12, 2021, 6:52 PM CST (00:52 UTC)
Expired: Mar 12, 2021, 7:15 PM CST
In force: 23 min
Issued by: NWS Springfield, MO

County Polk County, MO

The radar

The Springfield radar (KSGF), 51 km from the middle of the area, began a volume at 00:52 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, 0.9 hours before the alert went out and 97 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: 2 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 477 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 384 m²/s²
0-3 km storm-relative helicity: 380 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 12, 5:24 PM CST, 1 hour 28 minutes earlier.

Area forecast discussion, Mar 12, 5:24 PM CST, 1 hour 28 minutes before

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Hazardous weather outlook, Mar 12, 3:21 PM CST, 3 hours 31 minutes before

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In the hours before

Local storm report, Mar 12, 3:18 PM CST, 3 hours 34 minutes before

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Local storm report, Mar 12, 3:20 PM CST, 3 hours 32 minutes before

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Local storm report, Mar 12, 4:01 PM CST, 2 hours 51 minutes before

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Local storm report, Mar 12, 4:25 PM CST, 2 hours 27 minutes before

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Local storm report, Mar 12, 6:47 PM CST, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
647 PM CST FRI MAR 12 2021

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

0620 PM     FLOOD            2 NW STOUTLAND          37.83N 92.54W
03/12/2021                   CAMDEN             MO   PUBLIC

            PICTURE OF WATER FLOWING OVER HIGHWAY H AT
            THE SHAKERAG CREEK LOW WATER CROSSING.

&&

CKR

Special weather statement, Mar 12, 6:52 PM CST, 0 minutes before

Special Weather Statement
National Weather Service Springfield MO
652 PM CST Fri Mar 12 2021

MOZ079-130115-
Polk MO-
652 PM CST Fri Mar 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL POLK COUNTY UNTIL 715 PM
CST...

At 651 PM CST, Doppler radar was tracking a strong thunderstorm over
Fair Play, or 8 miles west of Bolivar, moving east at 45 mph.

Penny size hail will be possible with this storm.

Locations impacted include...
Bolivar...                        Polk...
Fair Play...                      Halfway...
Goodson...

LAT...LON 3773 9319 3773 9317 3756 9318 3758 9362
      3770 9361 3776 9319
TIME...MOT...LOC 0051Z 263DEG 39KT 3764 9356

Rothstein

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 12, 8:27 PM CST	Areal Flood Warning	SGF	Camden, Dent, Laclede, Maries, Miller, Phelps and 3 more	15 hr
Mar 12, 9:34 PM CST	Areal Flood Warning	SGF	Greene	14 hr
Mar 12, 11:48 PM CST	Areal Flood Warning	SGF	Benton, Cedar, Dade, Hickory, Lawrence, St. Clair and 1 more	12 hr
Mar 13, 12:36 AM CST	Flash Flood Warning	SGF	Newton	8 hr
Mar 13, 12:56 AM CST	Areal Flood Warning	SGF	Dent, Howell, Oregon, Shannon, Texas, Wright	12 hr
Mar 13, 12:59 AM CST	Areal Flood Warning	SGF	Douglas, Ozark, Webster	12 hr
Mar 13, 1:15 AM CST	Flash Flood Warning	SGF	McDonald	8 hr
Mar 13, 1:25 AM CST	Areal Flood Warning	SGF	Barry, Christian, Stone, Taney	12 hr
Mar 13, 3:04 AM CST	Areal Flood Warning	SGF	McDonald	8 hr
Mar 13, 3:37 AM CST	Flash Flood Warning Considerable damage threat	SGF	Newton	7 hr
Mar 13, 3:52 AM CST	Flash Flood Warning Considerable damage threat	SGF	McDonald	6 hr
Mar 13, 4:12 AM CST	Areal Flood Warning	SGF	Barton, Cedar, Jasper	7 hr
Mar 13, 9:13 AM CST	Flash Flood Warning	SGF	McDonald	3 hr
Mar 13, 9:29 AM CST	Areal Flood Warning	SGF	Camden, Dallas, Hickory, Laclede, Miller, Morgan and 1 more	118 min
Mar 13, 11:00 AM CST	Areal Flood Warning	SGF	Camden, Dallas, Dent, Laclede, Phelps, Pulaski and 3 more	24 hr
Mar 13, 11:24 AM CST	Areal Flood Warning	SGF	Cedar, Dade, Dallas, Greene, Hickory, Lawrence and 2 more	24 hr
Mar 13, 11:31 AM CST	Areal Flood Warning	SGF	Barton, Jasper, McDonald, Newton	23 hr
Mar 13, 12:46 PM CST	Areal Flood Warning	SGF	Douglas, Howell, Oregon, Ozark, Shannon, Texas and 2 more	22 hr
Mar 13, 12:59 PM CST	Areal Flood Warning	SGF	Barry, Christian, Greene, Stone, Taney	22 hr
Mar 13, 1:15 PM CST	River Flood Warning	SGF	Jasper	18 hr
Mar 13, 3:26 PM CST	River Flood Warning	SGF	McDonald	16 hr
Mar 13, 2:53 AM CST	River Flood Warning	SGF	Bourbon	36 hr

Nearby

Special Weather Statements in Missouri, 2021 Every special weather statement 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.