Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 142, NWS Springfield, MO

July 7, 2012Webster County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 7, 2012, 1:40 PM CDT for Webster County, Missouri. It was in force for 30 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: Jul 7, 2012, 1:40 PM CDT (18:40 UTC)
Expired: Jul 7, 2012, 2:10 PM CDT
In force: 30 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Webster County, MO

The radar

The Springfield radar (KSGF), 53 km from the middle of the area, began a volume at 18:39 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 7, 1:45 PM CDT	TSTM WND DMG	Niangua, MO	TWO BARNS DAMAGED
Jul 7, 1:50 PM CDT	TSTM WND DMG	4 Ese Marshfield, MO	TREE DOWN.

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, 6.7 hours before the alert went out and 99 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: 1058 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 2009 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

321 
WUUS53 KSGF 071840
SVRSGF
MOC225-071930-
/O.NEW.KSGF.SV.W.0142.120707T1840Z-120707T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
140 PM CDT SAT JUL 7 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL WEBSTER COUNTY IN SOUTHWEST MISSOURI...

* UNTIL 230 PM CDT

* AT 133 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTHEAST
  OF NIANGUA...AND MOVING WEST AT 10 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...
  MARSHFIELD AND NIANGUA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3728 9294 3743 9289 3742 9269 3730 9269
      3724 9273
TIME...MOT...LOC 1840Z 098DEG 7KT 3734 9273

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

$$

WISE

2 follow-up statements

308 
WWUS53 KSGF 071858
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
158 PM CDT SAT JUL 7 2012

MOC225-071930-
/O.CON.KSGF.SV.W.0142.000000T0000Z-120707T1930Z/
WEBSTER MO-
158 PM CDT SAT JUL 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
WEBSTER COUNTY UNTIL 230 PM CDT...

AT 157 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR NIANGUA...AND
MOVING WEST AT 25 MPH.

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

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...
MARSHFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3742 9272 3726 9276 3728 9294 3743 9289
TIME...MOT...LOC 1858Z 087DEG 21KT 3735 9283

HAIL...0.75IN
WIND...60 MPH

$$

WISE

951 
WWUS53 KSGF 071910
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
210 PM CDT SAT JUL 7 2012

MOC225-071920-
/O.CAN.KSGF.SV.W.0142.000000T0000Z-120707T1930Z/
WEBSTER MO-
210 PM CDT SAT JUL 7 2012

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

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

LAT...LON 3742 9272 3726 9276 3728 9294 3743 9289
TIME...MOT...LOC 1910Z 087DEG 21KT 3735 9292

$$

WISE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 1:37 PM CDT	Severe Thunderstorm Warning	SGF	Webster	23 min
Jul 7, 1:44 PM CDT	Special Weather Statement	SGF	Christian	31 min
Jul 7, 1:54 PM CDT	Special Weather Statement	SGF	Christian	36 min
Jul 7, 2:00 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene	30 min
Jul 7, 2:09 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene	51 min
Jul 7, 2:20 PM CDT	Special Weather Statement	SGF	Stone	25 min
Jul 7, 2:21 PM CDT	Special Weather Statement	SGF	Maries	24 min
Jul 7, 2:24 PM CDT	Severe Thunderstorm Warning	SGF	Greene	51 min
Jul 7, 2:50 PM CDT	Severe Thunderstorm Warning	SGF	Barry, Lawrence, Stone	40 min
Jul 7, 3:05 PM CDT	Special Weather Statement	SGF	Morgan	25 min
Jul 7, 3:12 PM CDT	Severe Thunderstorm Warning	SGF	Morgan	27 min
Jul 7, 3:32 PM CDT	Severe Thunderstorm Warning	SGF	Cedar, Polk	43 min
Jul 7, 3:40 PM CDT	Severe Thunderstorm Warning	SGF	Camden, Morgan	35 min
Jul 7, 3:50 PM CDT	Severe Thunderstorm Warning	SGF	Barry	25 min
Jul 7, 4:39 PM CDT	Severe Thunderstorm Warning	SGF	St. Clair	36 min
Jul 7, 5:17 PM CDT	Special Weather Statement	SGF	Barton	28 min
Jul 7, 5:23 PM CDT	Severe Thunderstorm Warning	SGF	Howell, Ozark	52 min
Jul 7, 5:29 PM CDT	Severe Thunderstorm Warning	SGF	Barton	31 min

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.