Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 57, NWS Springfield, MO

March 20, 2012Ozark County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Mar 20, 2012, 6:13 PM CDT for Ozark County, Missouri. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 20, 2012, 6:13 PM CDT (23:13 UTC)
Expired
Mar 20, 2012, 6:44 PM CDT
In force
31 min
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Hail
0.5 in
Wind
60.0 mph

County Ozark County, MO

The radar

The Springfield radar (KSGF), 112 km from the middle of the area, began a volume at 23:15 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.2 hours before the alert went out and 128 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2012-03-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2012-03-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -85 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
660 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
-85 m²/s²
0-3 km storm-relative helicity
439 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.

809 
WUUS53 KSGF 202313
SVRSGF
MOC153-210000-
/O.NEW.KSGF.SV.W.0057.120320T2313Z-120321T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
613 PM CDT TUE MAR 20 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

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

* UNTIL 700 PM CDT.

* AT 610 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 13 MILES SOUTHWEST
  OF UDALL TO 8 MILES SOUTH OF GAINESVILLE TO 6 MILES SOUTHEAST OF
  PONTIAC...MOVING NORTH AT 40 MPH. THESE STORMS ARE CAPABLE OF
  PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.

* LOCATIONS IMPACTED INCLUDE BRIXEY...DORA...GAINESVILLE...
  HARDENVILLE...ISABELLA...NOBLE...PONTIAC...ROCKBRIDGE...SUNDOWN...
  SYCAMORE...TECUMSEH...THORNFIELD...UDALL...WASOLA...WILLHOIT AND
  ZANONI.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS CAPABLE OF PRODUCING DAMAGING WINDS...IF
YOU ARE IN THEIR PATH SEEK SHELTER INDOORS AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 3649 9264 3681 9267 3679 9211 3673 9211
      3649 9221
TIME...MOT...LOC 2313Z 184DEG 35KT 3641 9237 3652 9245
          3649 9251
WIND...HAIL 60MPH <.50IN

$$

WISE
2 follow-up statements
260 
WWUS53 KSGF 202323
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
623 PM CDT TUE MAR 20 2012

MOC153-210000-
/O.CON.KSGF.SV.W.0057.000000T0000Z-120321T0000Z/
OZARK MO-
623 PM CDT TUE MAR 20 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR OZARK COUNTY...

AT 619 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES
SOUTHWEST OF UDALL TO GAINESVILLE TO 4 MILES WEST OF GAINESVILLE...
MOVING NORTH AT 60 MPH. THESE STORMS ARE CAPABLE OF PRODUCING
DAMAGING WINDS IN EXCESS OF 60 MPH.

LOCATIONS IMPACTED INCLUDE BRIXEY...DORA...GAINESVILLE...
HARDENVILLE...NOBLE...ROCKBRIDGE...SYCAMORE...TECUMSEH...UDALL...
WASOLA...WILLHOIT AND ZANONI.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE DANGEROUS STORMS CAPABLE OF PRODUCING DAMAGING WINDS...IF
YOU ARE IN THEIR PATH SEEK SHELTER INDOORS AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 3649 9243 3654 9260 3680 9263 3680 9229
      3679 9211 3673 9211 3649 9221
TIME...MOT...LOC 2323Z 182DEG 51KT 3653 9235 3668 9242
          3667 9250
WIND...HAIL 60MPH <.50IN

$$

WISE
345 
WWUS53 KSGF 202344
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
644 PM CDT TUE MAR 20 2012

MOC153-202354-
/O.CAN.KSGF.SV.W.0057.000000T0000Z-120321T0000Z/
OZARK MO-
644 PM CDT TUE MAR 20 2012

...THE SEVERE THUNDERSTORM WARNING FOR OZARK COUNTY IS CANCELLED...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE SEVERE
THUNDERSTORMS THAT PROMPTED THE WARNING ARE EXITING THE WARNED
AREA...THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 3649 9243 3654 9260 3680 9263 3680 9229
      3679 9211 3673 9211 3649 9221
TIME...MOT...LOC 2344Z 182DEG 51KT 3683 9234 3698 9241
          3697 9249

$$

BOXELL

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 19, 7:21 PM CDTAreal Flood WarningSGFJasper, McDonald, Newton12 hr
Mar 19, 9:16 PM CDTAreal Flood WarningSGFBarton, Vernon10 hr
Mar 19, 9:21 PM CDTRiver Flood WarningSGFBates, Vernon9 days
Mar 19, 10:46 PM CDTSpecial Weather StatementSGFBarry44 min
Mar 19, 11:21 PM CDTSpecial Weather StatementSGFStone24 min
Mar 19, 11:50 PM CDTSpecial Weather StatementSGFTaney40 min
Mar 20, 12:09 AM CDTSevere Thunderstorm WarningSGFChristian, Douglas, Greene, Webster41 min
Mar 20, 6:52 AM CDTAreal Flood WarningSGFBarton, Jasper, McDonald, Newton, Vernon6 hr
Mar 20, 8:55 AM CDTRiver Flood WarningSGFMcDonald64 hr
Mar 20, 10:03 AM CDTRiver Flood WarningSGFStone63 hr
Mar 20, 1:01 PM CDTAreal Flood WarningSGFMcDonald, Newton22 hr
Mar 20, 4:48 PM CDTAreal Flood WarningSGFBarton, Jasper, Vernon18 hr
Mar 20, 6:08 PM CDTSpecial Weather StatementSGFOzark37 min
Mar 20, 6:27 PM CDTSevere Thunderstorm WarningSGFDouglas35 min
Mar 20, 6:44 PM CDTTornado WarningSGFDouglas18 min
Mar 20, 6:51 PM CDTSevere Thunderstorm WarningSGFWright39 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.