Alert archive / Missouri / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 310, NWS Springfield, MO

July 11, 2009Dent County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 11, 2009, 5:39 PM CDT for Dent County, Missouri. It was in force for 51 min. 3 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: Jul 11, 2009, 5:39 PM CDT (22:39 UTC)
Expired: Jul 11, 2009, 6:30 PM CDT
In force: 51 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

County Dent County, MO

The radar

The St Louis radar (KLSX), 129 km from the middle of the area, began a volume at 22:42 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
Jul 11, 5:53 PM CDT	HAIL 1.25	Lecoma, MO	QUARTER TO GOLF BALL SIZED HAIL. ALSO REPORTS OF TREE BRANCHES DOWN IN LECOMA
Jul 11, 5:55 PM CDT	HAIL 1.75	Anutt, MO	TIME ESTIMATED.
Jul 11, 6:25 PM CDT	HAIL 0.88	3 E Lake Spring, MO

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

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.7 hours before the alert went out and 234 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: 2972 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 283 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KSGF 112239
SVRSGF
MOC065-112330-
/O.NEW.KSGF.SV.W.0310.090711T2239Z-090711T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
539 PM CDT SAT JUL 11 2009

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DENT COUNTY IN SOUTH CENTRAL MISSOURI...

* UNTIL 630 PM CDT.

* AT 536 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR ANUTT...OR 12 MILES NORTHWEST OF SALEM...
  MOVING EAST AT 20 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER
  SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.

* LOCATIONS IMPACTED INCLUDE ANUTT...BANGERT...BOSS...HOWES MILL...
  HOWES...LAKE SPRING...LECOMA...LENOX...SALEM...SLIGO AND STONE
  HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM CAPABLE OF PRODUCING LARGE HAIL AND
DAMAGING WINDS...IF YOU ARE IN ITS PATH SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS.

&&

LAT...LON 3758 9117 3759 9131 3755 9131 3755 9132
      3763 9182 3779 9181 3779 9132 3778 9131
      3771 9131 3770 9117 3769 9116 3759 9116
TIME...MOT...LOC 2238Z 278DEG 17KT 3772 9173

$$

BARJENBRUCH

2 follow-up statements

000 
WWUS53 KSGF 112303
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
603 PM CDT SAT JUL 11 2009

MOC065-112330-
/O.CON.KSGF.SV.W.0310.000000T0000Z-090711T2330Z/
DENT MO-
603 PM CDT SAT JUL 11 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHERN DENT COUNTY...

AT 558 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM 3 MILES SOUTH OF LAKE SPRING...OR 9
MILES NORTHWEST OF SALEM...MOVING EAST AT 15 MPH. THIS STORM IS
CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS
OF 60 MPH.

LOCATIONS IMPACTED INCLUDE ANUTT...BANGERT...BOSS...HOWES MILL...
HOWES...LAKE SPRING...LECOMA...SALEM...SLIGO AND STONE HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM CAPABLE OF PRODUCING LARGE HAIL AND
DAMAGING WINDS...IF YOU ARE IN ITS PATH SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS.

&&

LAT...LON 3758 9118 3761 9170 3778 9181 3779 9132
      3778 9131 3771 9131 3770 9117 3769 9116
      3759 9116
TIME...MOT...LOC 2303Z 265DEG 12KT 3774 9164

$$

BARJENBRUCH

000 
WWUS53 KSGF 112327
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
627 PM CDT SAT JUL 11 2009

MOC065-112338-
/O.EXP.KSGF.SV.W.0310.000000T0000Z-090711T2330Z/
DENT MO-
627 PM CDT SAT JUL 11 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DENT COUNTY WILL
EXPIRE AT 630 PM CDT...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING IS EXITING THE WARNED AREA...
THUS THE WARNING IS BEING ALLOWED TO EXPIRE.

LAT...LON 3758 9118 3761 9170 3778 9181 3779 9132
      3778 9131 3771 9131 3770 9117 3769 9116
      3759 9116
TIME...MOT...LOC 2328Z 265DEG 12KT 3775 9153

$$

BARJENBRUCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 3:25 AM CDT	Severe Thunderstorm Warning	SGF	St. Clair	54 min
Jul 11, 3:47 AM CDT	Severe Thunderstorm Warning	SGF	Cedar	34 min
Jul 11, 4:11 AM CDT	Severe Thunderstorm Warning	SGF	Dade, Greene	33 min
Jul 11, 4:32 AM CDT	Severe Thunderstorm Warning	SGF	Greene	58 min
Jul 11, 5:26 PM CDT	Severe Thunderstorm Warning	SGF	Miller, Pulaski	34 min
Jul 11, 5:55 PM CDT	Severe Thunderstorm Warning	SGF	Phelps, Pulaski	35 min
Jul 11, 6:00 PM CDT	Severe Thunderstorm Warning	SGF	Maries	45 min
Jul 11, 6:26 PM CDT	Severe Thunderstorm Warning	SGF	Dent, Phelps, Pulaski	34 min
Jul 11, 6:42 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Phelps	33 min
Jul 11, 6:55 PM CDT	Flash Flood Warning	SGF	Dent, Maries, Miller, Phelps, Pulaski	4 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2009 Every severe thunderstorm warning in 2009

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.