Alert archive / Missouri / Special Weather Statements in 2018

Special Weather Statement, NWS Springfield, MO

October 6, 2018Laclede County, Missouri

NWS Springfield, MO issued this special weather statement at Oct 6, 2018, 2:49 PM CDT for Laclede County, Missouri. It was in force for 26 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: Oct 6, 2018, 2:49 PM CDT (19:49 UTC)
Expired: Oct 6, 2018, 3:15 PM CDT
In force: 26 min
Issued by: NWS Springfield, MO

County Laclede County, MO

The radar

The Springfield radar (KSGF), 91 km from the middle of the area, began a volume at 19:52 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 12:00Z, 7.8 hours before the alert went out and 140 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: 710 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 758 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 258 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.0

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 Oct 6, 12:23 PM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Oct 6, 12:23 PM CDT, 2 hours 26 minutes before

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Hazardous weather outlook, Oct 6, 1:14 PM CDT, 1 hour 35 minutes before

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In the hours before

Special weather statement, Oct 6, 2:43 PM CDT, 6 minutes before

Special Weather Statement
National Weather Service Springfield MO
243 PM CDT SAT OCT 6 2018

MOZ079-080-062030-
Dallas MO-Polk MO-
243 PM CDT SAT OCT 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN DALLAS AND
NORTHEASTERN POLK COUNTIES UNTIL 330 PM CDT...

At 243 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles southwest of Urbana, or 10 miles northeast of Bolivar, moving
northeast at 20 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Polk...                           Louisburg...
Goodson...                        Pumpkin Center...

LAT...LON 3783 9306 3769 9306 3765 9333 3780 9334
      3781 9329 3780 9319 3782 9318
TIME...MOT...LOC 1943Z 243DEG 15KT 3773 9328

Raberding

Special weather statement, Oct 6, 2:49 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Springfield MO
249 PM CDT SAT OCT 6 2018

MOZ081-062015-
Laclede MO-
249 PM CDT SAT OCT 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LACLEDE COUNTY UNTIL
315 PM CDT...

At 248 PM CDT, Doppler radar was tracking a strong thunderstorm 12
miles south of Lebanon, moving northeast at 40 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Twin Bridges...                   Competition...
Lynchburg...                      Dry Knob...
Falcon...

LAT...LON 3762 9267 3768 9232 3767 9232 3748 9225
      3748 9263
TIME...MOT...LOC 1948Z 245DEG 33KT 3752 9258

Raberding

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 6, 2:43 PM CDT	Special Weather Statement	SGF	Dallas	47 min
Oct 6, 3:36 PM CDT	Special Weather Statement	SGF	Pulaski	24 min
Oct 6, 6:28 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	62 min

Nearby

Special Weather Statements in Missouri, 2018 Every special weather statement in 2018

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.