Alert archive / Missouri / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 315, NWS Springfield, MO

October 6, 2018McDonald County, Newton County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Oct 6, 2018, 6:28 PM CDT for McDonald County, Newton County, Missouri. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 6, 2018, 6:28 PM CDT (23:28 UTC)
Expired: Oct 6, 2018, 7:30 PM CDT
In force: 62 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties McDonald County, MO, Newton County, MO

The radar

The Springfield radar (KSGF), 99 km from the middle of the area, began a volume at 23:28 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, 11.5 hours before the alert went out and 51 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

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Oct 6, 3:27 PM CDT, 3 hours 1 minute earlier.

Area forecast discussion, Oct 6, 3:27 PM CDT, 3 hours 1 minute before

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Hazardous weather outlook, Oct 6, 3:51 PM CDT, 2 hours 37 minutes before

Hazardous Weather Outlook
National Weather Service Springfield MO
351 PM CDT Sat Oct 6 2018

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-072100-
Bourbon-Crawford-Cherokee-Benton-Morgan-Miller-Maries-Vernon-
St. Clair-Hickory-Camden-Pulaski-Phelps-Barton-Cedar-Polk-Dallas-
Laclede-Texas-Dent-Jasper-Dade-Greene-Webster-Wright-Newton-
Lawrence-Christian-Douglas-Howell-Shannon-McDonald-Barry-Stone-
Taney-Ozark-Oregon-
351 PM CDT Sat Oct 6 2018

This Hazardous Weather Outlook is for portions of the Missouri
Ozarks and extreme southeast Kansas.

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Limited thunderstorm wind damage risk.
  Limited flooding risk.
  Significant lightning risk.

DISCUSSION...

Scattered thunderstorms will continue to develop and spread
across the area late this afternoon into this evening. A few
strong storms will be possible with winds to 50mph and small hail
the main risk. Brief heavy rainfall and frequent cloud to ground
lightning will also occur with the storms.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Additional showers and thunderstorms are possible on Sunday, and
again and few strong storms, with gusty winds the main risk will
be possible.

Better widespread chances for showers and storms will occur
Tuesday and Wednesday. Lightning and heavy rainfall are currently
the main threats but a few strong storms will be possible.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be needed through tonight.

&&

More detailed information can be accessed at:
http://www.weather.gov/sgf/sitrep

This product in graphical format...along with other weather...
hydrological and climate information...at
http://www.weather.gov/sgf

Wise

In the hours before

Special weather statement, Oct 6, 2:43 PM CDT, 3 hours 45 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, 3 hours 39 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

Special weather statement, Oct 6, 3:36 PM CDT, 2 hours 52 minutes before

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

MOZ070-071-062100-
Phelps MO-Pulaski MO-
336 PM CDT SAT OCT 6 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PULASKI AND
SOUTHWESTERN PHELPS COUNTIES UNTIL 400 PM CDT...

At 336 PM CDT, Doppler radar was tracking a strong thunderstorm over
southwestern Fort Leonard Wood, moving northeast at 30 mph.

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

Locations impacted include...
Fort Leonard Wood...              St. Robert...
Devil's Elbow...

This includes Interstate 44 between mile markers 161 and 168.

LAT...LON 3760 9225 3764 9225 3766 9228 3767 9229
      3774 9232 3788 9203 3760 9193
TIME...MOT...LOC 2036Z 243DEG 26KT 3767 9223

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, 2:49 PM CDT	Special Weather Statement	SGF	Laclede	26 min
Oct 6, 3:36 PM CDT	Special Weather Statement	SGF	Pulaski	24 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2018 Every severe thunderstorm warning 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.