Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 310, NWS Springfield, MO

October 13, 2012Lawrence County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Oct 13, 2012, 8:12 PM CDT for Lawrence County, Missouri. It was in force for 33 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Oct 13, 2012, 8:12 PM CDT (01:12 UTC)
Expired: Oct 13, 2012, 8:45 PM CDT
In force: 33 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Lawrence County, MO

The radar

The Springfield radar (KSGF), 47 km from the middle of the area, began a volume at 01:12 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.

What was reported inside it

Time	Report	Where	Remark
Oct 13, 8:20 PM CDT	TSTM WND GST 70	4 Nnw Mount Vernon, MO	TRAINED WEATHER SPOTTER WITH THE VOLUNTEER FIRE DEPT ESTIMATED WINDS UP TO 70 MPH. REPORTED LOTS OF SMALL LIMBS DOWN AND LEAF DEBRIS.
Oct 13, 8:31 PM CDT	TSTM WND DMG	3 Wsw Halltown, MO	A NATIONAL WEATHER SERVICE STORM SURVEY REVEALED THAT STRAIGHT LINE WINDS ESTIMATED AT 70 MPH DAMAGED PORTIONS OF A MOBILE HOME AND SNAPPED OFF A TREE TOP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 13, 5:57 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.2 hours before the alert went out and 22 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: 135 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 729 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 347 m²/s²
0-3 km storm-relative helicity: 420 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.5

Open this sounding in Storm Lab

The text

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

914 
WUUS53 KSGF 140112
SVRSGF
MOC109-140145-
/O.NEW.KSGF.SV.W.0310.121014T0112Z-121014T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
812 PM CDT SAT OCT 13 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAWRENCE COUNTY IN SOUTHWEST MISSOURI...

* UNTIL 845 PM CDT

* AT 808 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
  LINE EXTENDING FROM 8 MILES SOUTHWEST OF MILLER TO 7 MILES
  NORTHEAST OF PIERCE CITY TO PIERCE CITY...AND MOVING NORTHEAST AT
  45 MPH.

  HAZARD...60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...MINOR TREE DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER
           BROKEN.

* LOCATIONS IMPACTED INCLUDE...
  CHESAPEAKE...FREISTATT...HALLTOWN...HOBERG...MILLER...MOUNT
  VERNON...PIERCE CITY...RED OAK...STOTTS CITY AND VERONA.

INTERSTATE 44 BETWEEN MILE MARKERS 35 AND 58 WILL ALSO BE IMPACTED BY
SEVERE THUNDERSTORMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT IMMEDIATELY
LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SUNDAY MORNING
FOR SOUTHEAST KANSAS AND SOUTHWEST MISSOURI.

LAT...LON 3693 9406 3702 9399 3722 9404 3729 9395
      3728 9361 3704 9361 3692 9387
TIME...MOT...LOC 0112Z 241DEG 40KT 3718 9393 3706 9390
          3694 9398

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60 MPH

$$

WISE

1 follow-up statement

641 
WWUS53 KSGF 140140 RRA
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
840 PM CDT SAT OCT 13 2012

MOC109-140151-
/O.EXP.KSGF.SV.W.0310.000000T0000Z-121014T0145Z/
LAWRENCE MO-
840 PM CDT SAT OCT 13 2012

...THE SEVERE THUNDERSTORM WARNING FOR LAWRENCE COUNTY WILL EXPIRE AT
845 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SUNDAY MORNING
FOR SOUTHEAST KANSAS AND SOUTHWEST MISSOURI.

LAT...LON 3693 9406 3702 9399 3722 9404 3729 9395
      3728 9361 3704 9361 3692 9387
TIME...MOT...LOC 0141Z 241DEG 40KT 3733 9357 3721 9354
          3709 9363

$$

WISE

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 7:05 PM CDT	Severe Thunderstorm Warning	SGF	Barton, Vernon	55 min
Oct 13, 7:08 PM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	52 min
Oct 13, 7:52 PM CDT	Severe Thunderstorm Warning	SGF	Cedar, Dade	53 min
Oct 13, 7:55 PM CDT	Special Weather Statement	SGF	Lawrence	50 min
Oct 13, 8:19 PM CDT	Tornado Warning	SGF	Lawrence	26 min
Oct 13, 8:27 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Dade, Greene, Polk	48 min
Oct 13, 8:38 PM CDT	Special Weather Statement	SGF	Polk	37 min
Oct 13, 8:43 PM CDT	Tornado Warning	SGF	Greene	32 min
Oct 13, 9:03 PM CDT	Severe Thunderstorm Warning	SGF	Dallas, Webster	42 min
Oct 13, 9:10 PM CDT	Special Weather Statement	SGF	Camden, Dallas, Laclede	65 min
Oct 13, 9:24 PM CDT	Areal Flood Advisory	SGF	McDonald, Newton	5 hr
Oct 13, 9:39 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Wright	25 min
Oct 13, 9:53 PM CDT	Special Weather Statement	SGF	Jasper	52 min
Oct 13, 9:55 PM CDT	Severe Thunderstorm Warning	SGF	Barry	33 min
Oct 13, 10:16 PM CDT	Flash Flood Warning	SGF	Greene	6 hr
Oct 13, 10:16 PM CDT	Severe Thunderstorm Warning	SGF	Stone	29 min
Oct 13, 10:41 PM CDT	Flash Flood Warning	SGF	Webster	5 hr
Oct 13, 11:18 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Ozark, Taney	57 min
Oct 14, 3:56 AM CDT	Areal Flood Warning	SGF	Greene, Webster	9 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2012 Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.