Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 73, NWS Springfield, MO

April 15, 2012Camden County, Dallas County, Laclede County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Apr 15, 2012, 3:58 PM CDT for Camden County, Dallas County, Laclede County, Missouri. It was in force for 26 min. 1 report 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: Apr 15, 2012, 3:58 PM CDT (20:58 UTC)
Expired: Apr 15, 2012, 4:24 PM CDT
In force: 26 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Camden County, MO, Dallas County, MO, Laclede County, MO

The radar

The Springfield radar (KSGF), 113 km from the middle of the area, began a volume at 21:00 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
Apr 15, 4:11 PM CDT	HAIL 1	Hurricane Deck, MO

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
Apr 15, 10:51 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.0 hours before the alert went out and 164 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: 31 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 855 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 319 m²/s²
0-3 km storm-relative helicity: 381 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

924 
WUUS53 KSGF 152058
SVRSGF
MOC029-059-105-152145-
/O.NEW.KSGF.SV.W.0073.120415T2058Z-120415T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
358 PM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CAMDEN COUNTY IN CENTRAL MISSOURI...
  NORTHEASTERN DALLAS COUNTY IN SOUTHWEST MISSOURI...
  NORTHWESTERN LACLEDE COUNTY IN SOUTHWEST MISSOURI...

* UNTIL 445 PM CDT

* AT 356 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 11 MILES SOUTH OF
  MACKS CREEK...AND MOVING NORTH AT 75 MPH.

  HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
           DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

* LOCATIONS IMPACTED INCLUDE...
  CAMDENTON...OSAGE BEACH...MACKS CREEK...VILLAGE OF THE FOUR
  SEASONS...VILLAGE OF FOUR SEASONS...LAKE OZARK...ELDRIDGE...
  BRANCH...DECATURVILLE...ROACH...MONTREAL...LINN CREEK...OLD LINN
  CREEK...FREEDOM...GREEN BAY TERRACE...HURRICANE DECK...PURVIS AND
  SUNRISE BEACH.

THIS WARNING ALSO INCLUDES BENNETT SPRING STATE PARK...LAKE OF THE
OZARKS STATE PARK AND LAKE OF THE OZARKS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

IF ON OR NEAR LAKE OF THE OZARKS...GET AWAY FROM THE WATER AND MOVE 
TO SHELTER. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE 
STRUCK BY LIGHTNING. BOATS CAN BE SWAMPED BY LARGE CAPSIZING 
WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO DOCK AND SEEK SAFE 
SHELTER NOW.

&&

LAT...LON 3821 9264 3817 9264 3817 9260 3810 9259
      3809 9257 3807 9257 3805 9253 3802 9252
      3768 9286 3776 9309 3819 9289 3819 9277
      3822 9274
TIME...MOT...LOC 2058Z 201DEG 65KT 3784 9293

HAIL...1.00IN
WIND...60 MPH

$$

FOSTER

3 follow-up statements

587 
WWUS53 KSGF 152104
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
404 PM CDT SUN APR 15 2012

MOC029-059-105-152145-
/O.CON.KSGF.SV.W.0073.000000T0000Z-120415T2145Z/
CAMDEN MO-LACLEDE MO-DALLAS MO-
404 PM CDT SUN APR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
DALLAS...NORTHWESTERN LACLEDE AND CENTRAL CAMDEN COUNTIES UNTIL 445
PM CDT...

AT 400 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTHEAST
OF MACKS CREEK...AND MOVING NORTH AT 80 MPH.

HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE DAMAGE...
         WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

LOCATIONS IMPACTED INCLUDE...
CAMDENTON...OSAGE BEACH...VILLAGE OF THE FOUR SEASONS...VILLAGE OF
FOUR SEASONS...LAKE OZARK...ROACH...MONTREAL...LINN CREEK...OLD LINN
CREEK...FREEDOM...GREEN BAY TERRACE...HURRICANE DECK...PURVIS AND
SUNRISE BEACH.

THIS WARNING ALSO INCLUDES LAKE OF THE OZARKS STATE PARK AND LAKE OF
THE OZARKS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

IF ON OR NEAR LAKE OF THE OZARKS...GET AWAY FROM THE WATER AND MOVE 
TO SHELTER. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE 
STRUCK BY LIGHTNING. BOATS CAN BE SWAMPED BY LARGE CAPSIZING 
WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO DOCK AND SEEK SAFE 
SHELTER NOW.

&&

LAT...LON 3821 9264 3817 9264 3817 9260 3810 9259
      3809 9257 3807 9257 3805 9253 3802 9252
      3776 9285 3785 9305 3819 9289 3819 9277
      3822 9274
TIME...MOT...LOC 2103Z 199DEG 72KT 3794 9287

HAIL...1.50IN
WIND...60 MPH

$$

FOSTER

029 
WWUS53 KSGF 152113
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
413 PM CDT SUN APR 15 2012

MOC059-105-152123-
/O.CAN.KSGF.SV.W.0073.000000T0000Z-120415T2145Z/
LACLEDE MO-DALLAS MO-
413 PM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DALLAS AND
NORTHWESTERN LACLEDE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3821 9264 3817 9264 3817 9260 3810 9259
      3809 9257 3807 9257 3805 9253 3802 9252
      3790 9275 3802 9297 3819 9289 3819 9277
      3822 9274
TIME...MOT...LOC 2113Z 199DEG 72KT 3812 9277

$$

MOC029-152145-
/O.CON.KSGF.SV.W.0073.000000T0000Z-120415T2145Z/
CAMDEN MO-
413 PM CDT SUN APR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL CAMDEN
COUNTY UNTIL 445 PM CDT...

AT 409 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CAMDENTON...
AND MOVING NORTH AT 85 MPH.

HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE DAMAGE...
         WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

LOCATIONS IMPACTED INCLUDE...
OSAGE BEACH...VILLAGE OF THE FOUR SEASONS...VILLAGE OF FOUR
SEASONS...LAKE OZARK...PURVIS AND SUNRISE BEACH.

THIS WARNING ALSO INCLUDES LAKE OF THE OZARKS STATE PARK AND LAKE OF
THE OZARKS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

&&

LAT...LON 3821 9264 3817 9264 3817 9260 3810 9259
      3809 9257 3807 9257 3805 9253 3802 9252
      3790 9275 3802 9297 3819 9289 3819 9277
      3822 9274
TIME...MOT...LOC 2113Z 199DEG 72KT 3812 9277

HAIL...1.50IN
WIND...60 MPH

$$

FOSTER

067 
WWUS53 KSGF 152124
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
424 PM CDT SUN APR 15 2012

MOC029-152134-
/O.CAN.KSGF.SV.W.0073.000000T0000Z-120415T2145Z/
CAMDEN MO-
424 PM CDT SUN APR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAMDEN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3821 9264 3817 9264 3817 9260 3810 9259
      3809 9257 3807 9257 3805 9253 3802 9252
      3790 9275 3802 9297 3819 9289 3819 9277
      3822 9274
TIME...MOT...LOC 2124Z 199DEG 72KT 3833 9268

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 12:54 AM CDT	Areal Flood Advisory	SGF	Benton, Camden, Dallas, Laclede, Maries, Miller and 4 more	12 hr
Apr 15, 4:13 AM CDT	Wind Advisory	SGF	Barton, Benton, Camden, Cedar, Dade, Dallas and 11 more	14 hr
Apr 15, 7:21 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper	39 min
Apr 15, 7:42 AM CDT	Severe Thunderstorm Warning	SGF	Barton, Vernon	36 min
Apr 15, 8:20 AM CDT	Special Weather Statement	SGF	St. Clair	25 min
Apr 15, 8:45 AM CDT	Special Weather Statement	SGF	Benton	45 min
Apr 15, 8:55 AM CDT	Flash Flood Warning	SGF	Barton, Jasper, Newton	6 hr
Apr 15, 9:59 AM CDT	Special Weather Statement	SGF	Lawrence	31 min
Apr 15, 11:22 AM CDT	Special Weather Statement	SGF	Camden, Dallas	38 min
Apr 15, 12:39 PM CDT	Special Weather Statement	SGF	Jasper	36 min
Apr 15, 12:41 PM CDT	Special Weather Statement	SGF	Cedar	34 min
Apr 15, 12:50 PM CDT	Special Weather Statement	SGF	St. Clair	25 min
Apr 15, 12:52 PM CDT	Special Weather Statement	SGF	Cedar, Dade	38 min
Apr 15, 12:54 PM CDT	Severe Thunderstorm Warning	SGF	Cedar, St. Clair	21 min
Apr 15, 1:14 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Stone	29 min
Apr 15, 1:47 PM CDT	Special Weather Statement	SGF	Dallas, Greene	28 min
Apr 15, 1:49 PM CDT	Severe Thunderstorm Warning	SGF	Barry	14 min
Apr 15, 3:18 PM CDT	Areal Flood Warning	SGF	Dallas, Polk	2 hr
Apr 15, 3:26 PM CDT	Flash Flood Warning	SGF	Christian, Greene, Stone, Taney, Webster	2 hr
Apr 15, 4:11 PM CDT	Severe Thunderstorm Warning	SGF	Miller, Morgan	22 min
Apr 15, 4:55 PM CDT	Areal Flood Advisory	SGF	Douglas, Ozark, Webster, Wright	6 hr
Apr 15, 5:04 PM CDT	Flash Flood Warning	SGF	Camden, Laclede, Maries, Miller, Phelps, Pulaski	6 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.