Alert archive / Missouri / Special Weather Statements in 2011

Special Weather Statement, NWS Springfield, MO

June 27, 2011Shannon County, Missouri

NWS Springfield, MO issued this special weather statement at Jun 27, 2011, 8:21 PM CDT for Shannon County, Missouri. It was in force for 24 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: Jun 27, 2011, 8:21 PM CDT (01:21 UTC)
Expired: Jun 27, 2011, 8:45 PM CDT
In force: 24 min
Issued by: NWS Springfield, MO

County Shannon County, MO

The radar

The St Louis radar (KLSX), 174 km from the middle of the area, began a volume at 01:23 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, 1.4 hours before the alert went out and 239 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: 3014 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1146 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

665 
WWUS83 KSGF 280121
SPSSGF

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
821 PM CDT MON JUN 27 2011

MOZ098-280145-
SHANNON MO-
821 PM CDT MON JUN 27 2011

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL SHANNON COUNTY UNTIL
845 PM CDT...

AT 819 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM OVER EASTERN SHANNON COUNTY...OR 30 MILES EAST OF
MOUNTAIN VIEW...MOVING SOUTHEAST AT 25 MPH. PENNY SIZE HAIL...AND
WINDS AROUND 50 MPH ARE EXPECTED WITH THIS STORM.

THIS STORM WILL GENERALLY REMAIN OVER RURAL AREAS OF EAST CENTRAL
SHANNON COUNTY.

IF YOU ARE IN THE PATH OF THIS STORM...MOVE INDOORS TO A STURDY 
SHELTER.

LAT...LON 3708 9107 3708 9121 3713 9134 3729 9126
      3727 9115 3726 9115 3726 9113 3721 9112
      3721 9109 3717 9106 3716 9102 3710 9101
TIME...MOT...LOC 0120Z 304DEG 23KT 3716 9119

$$

FOSTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 2:23 AM CDT	Special Weather Statement	SGF	Barton	37 min
Jun 28, 2:42 AM CDT	Special Weather Statement	SGF	Greene, Webster	48 min
Jun 28, 2:55 AM CDT	Severe Thunderstorm Warning	SGF	Webster, Wright	50 min
Jun 28, 3:04 AM CDT	Special Weather Statement	SGF	Newton	26 min
Jun 28, 3:11 AM CDT	Special Weather Statement	SGF	Dade	49 min
Jun 28, 3:25 AM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence	50 min
Jun 28, 3:28 AM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas	47 min
Jun 28, 3:33 AM CDT	Severe Thunderstorm Warning	SGF	Wright	42 min
Jun 28, 3:44 AM CDT	Severe Thunderstorm Warning	SGF	Douglas, Ozark	46 min
Jun 28, 4:04 AM CDT	Severe Thunderstorm Warning	SGF	Douglas, Ozark, Taney	41 min
Jun 28, 4:06 AM CDT	Severe Thunderstorm Warning	SGF	Barry, Stone	39 min
Jun 28, 4:37 AM CDT	Severe Thunderstorm Warning	SGF	Douglas, Howell, Oregon, Ozark	38 min
Jun 28, 4:43 AM CDT	Severe Thunderstorm Warning	SGF	Barry, Stone, Taney	34 min
Jun 28, 4:46 AM CDT	Special Weather Statement	SGF	Ozark, Taney	44 min
Jun 28, 4:55 AM CDT	Special Weather Statement	SGF	Texas	50 min
Jun 28, 5:13 AM CDT	Special Weather Statement	SGF	Ozark	47 min
Jun 28, 5:54 AM CDT	Special Weather Statement	SGF	Oregon	36 min
Jun 28, 2:19 PM CDT	Excessive Heat Watch	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 17 more	38 hr
Jun 28, 1:32 AM CDT	Special Weather Statement	SGF	Cherokee	43 min

Nearby

Special Weather Statements in Missouri, 2011 Every special weather statement 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.