Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 64, NWS Springfield, MO

April 13, 20124 counties in Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Apr 13, 2012, 8:28 PM CDT for 4 counties in Missouri. It was in force for 25 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: Apr 13, 2012, 8:28 PM CDT (01:28 UTC)
Expired: Apr 13, 2012, 8:53 PM CDT
In force: 25 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Dade County, MO, Dallas County, MO, Greene County, MO, Polk County, MO

The radar

The Springfield radar (KSGF), 14 km from the middle of the area, began a volume at 01:29 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 13, 8:37 PM CDT	HAIL 0.75	Walnut Grove, MO
Apr 13, 8:37 PM CDT	HAIL 1.75	Walnut Grove, 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 00:00Z, 1.5 hours before the alert went out and 60 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: 677 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

416 
WUUS53 KSGF 140128
SVRSGF
MOC057-059-077-167-140215-
/O.NEW.KSGF.SV.W.0064.120414T0128Z-120414T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
828 PM CDT FRI APR 13 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DADE COUNTY IN SOUTHWEST MISSOURI...
  SOUTHWESTERN DALLAS COUNTY IN SOUTHWEST MISSOURI...
  NORTHERN GREENE COUNTY IN SOUTHWEST MISSOURI...
  SOUTHERN POLK COUNTY IN SOUTHWEST MISSOURI...

* UNTIL 915 PM CDT

* AT 825 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR ASH GROVE...
  AND MOVING EAST AT 40 MPH.

  HAZARD...HALF DOLLAR SIZE HAIL.

  SOURCE...TRAINED WEATHER SPOTTERS.

  IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.

* LOCATIONS IMPACTED INCLUDE...
  WALNUT GROVE...WILLARD...MORRISVILLE...PLEASANT HOPE...FAIR
  GROVE...CAVE SPRINGS...SACVILLE...GLIDEWELL...EBENEZER...BRIGHTON
  AND BASSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 3728 9361 3728 9366 3740 9369 3763 9320
      3738 9307 3733 9308 3724 9361
TIME...MOT...LOC 0128Z 248DEG 34KT 3735 9358

HAIL...1.25IN
WIND...<50 MPH

$$

GRIFFIN

2 follow-up statements

470 
WWUS53 KSGF 140140
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
840 PM CDT FRI APR 13 2012

MOC057-140150-
/O.CAN.KSGF.SV.W.0064.000000T0000Z-120414T0215Z/
DADE MO-
840 PM CDT FRI APR 13 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DADE COUNTY IS
CANCELLED...

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

LAT...LON 3745 9359 3763 9320 3738 9307 3733 9308
      3725 9354
TIME...MOT...LOC 0140Z 242DEG 32KT 3741 9349

$$

MOC059-077-167-140215-
/O.CON.KSGF.SV.W.0064.000000T0000Z-120414T0215Z/
GREENE MO-POLK MO-DALLAS MO-
840 PM CDT FRI APR 13 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
DALLAS...SOUTHEASTERN POLK AND NORTHERN GREENE COUNTIES UNTIL 915 PM
CDT...

AT 839 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WALNUT
GROVE...AND MOVING NORTHEAST AT 35 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...PUBLIC.

IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.

LOCATIONS IMPACTED INCLUDE...
MORRISVILLE...PLEASANT HOPE...FAIR GROVE...SACVILLE...GLIDEWELL...
EBENEZER...BRIGHTON AND BASSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 3745 9359 3763 9320 3738 9307 3733 9308
      3725 9354
TIME...MOT...LOC 0140Z 242DEG 32KT 3741 9349

HAIL...1.00IN
WIND...<50 MPH

$$

GRIFFIN

686 
WWUS53 KSGF 140153
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
853 PM CDT FRI APR 13 2012

MOC059-077-167-140203-
/O.CAN.KSGF.SV.W.0064.000000T0000Z-120414T0215Z/
GREENE MO-POLK MO-DALLAS MO-
853 PM CDT FRI APR 13 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DALLAS...
SOUTHEASTERN POLK AND NORTHERN GREENE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM.

LAT...LON 3745 9359 3763 9320 3738 9307 3733 9308
      3725 9354
TIME...MOT...LOC 0153Z 242DEG 32KT 3746 9336

$$

GRIFFIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 7:03 PM CDT	Special Weather Statement	SGF	Dade	42 min
Apr 13, 7:15 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Jasper, Lawrence	45 min
Apr 13, 7:59 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Lawrence	31 min
Apr 13, 8:18 PM CDT	Special Weather Statement	SGF	Greene	42 min
Apr 13, 8:35 PM CDT	Severe Thunderstorm Warning	SGF	Greene	24 min
Apr 13, 9:10 PM CDT	Flash Flood Watch	SGF	Barton, Benton, Camden, Cedar, Dade, Dallas and 11 more	13 hr
Apr 13, 9:24 PM CDT	Severe Thunderstorm Warning	SGF	Cedar, Dade, Polk	36 min
Apr 13, 9:43 PM CDT	Flash Flood Warning	SGF	Camden, Maries, Miller, Morgan	6 hr
Apr 13, 11:00 PM CDT	Flash Flood Warning	SGF	Phelps, Pulaski	5 hr
Apr 14, 1:11 AM CDT	Special Weather Statement	SGF	Morgan	49 min
Apr 14, 4:01 AM CDT	Areal Flood Warning	SGF	Camden, Maries, Miller, Morgan, Phelps, Pulaski	12 hr
Apr 14, 5:48 AM CDT	Special Weather Statement	SGF	Jasper	27 min
Apr 14, 7:12 AM CDT	Flash Flood Warning	SGF	Jasper, Lawrence, McDonald, Newton	6 hr
Apr 14, 12:53 PM CDT	Areal Flood Warning	SGF	Jasper, Newton	6 hr
Apr 14, 3:59 PM CDT	Areal Flood Warning	SGF	Benton, Camden, Laclede, Maries, Miller, Morgan and 2 more	9 hr
Apr 14, 4:01 PM CDT	Areal Flood Warning	SGF	Dallas, Polk	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.