Alert archive / Missouri / Tornado Warnings in 2012

Tornado Warning 9, NWS Springfield, MO

January 17, 2012Phelps County, Missouri

NWS Springfield, MO issued this tornado warning at Jan 17, 2012, 1:34 AM CST for Phelps County, Missouri. It was in force for 12 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: Jan 17, 2012, 1:34 AM CST (07:34 UTC)
Expired: Jan 17, 2012, 1:46 AM CST
In force: 12 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

County Phelps County, MO

The radar

The St Louis radar (KLSX), 106 km from the middle of the area, began a volume at 07:36 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 16, 11:47 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.6 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: 3 J/kg
Mixed-layer CIN: -171 J/kg
Mixed-layer LCL: 1205 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 361 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.

332 
WFUS53 KSGF 170734
TORSGF
MOC161-170800-
/O.NEW.KSGF.TO.W.0009.120117T0734Z-120117T0800Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
134 AM CST TUE JAN 17 2012

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN PHELPS COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 200 AM CST.

* AT 133 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER SOUTHEASTERN MARIES COUNTY...OR 11 MILES NORTHEAST OF
  ROLLA...MOVING EAST AT 60 MPH.

* THE TORNADO WILL GENERALLY REMAIN OVER RURAL AREAS OF NORTHEASTERN
  PHELPS COUNTY.

INTERSTATE 44 BETWEEN MILE MARKERS 192 AND 199 WILL ALSO BE IMPACTED
BY THIS TORNADO.

IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING
DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3801 9168 3805 9170 3805 9171 3805 9163
      3816 9163 3816 9153 3815 9151 3804 9152
TIME...MOT...LOC 0735Z 250DEG 52KT 3808 9160
HAIL 1.00IN

$$

CRAMER

1 follow-up statement

951 
WWUS53 KSGF 170746
SVSSGF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
146 AM CST TUE JAN 17 2012

MOC161-170757-
/O.CAN.KSGF.TO.W.0009.000000T0000Z-120117T0800Z/
PHELPS MO-
146 AM CST TUE JAN 17 2012

...THE TORNADO WARNING FOR NORTHEASTERN PHELPS COUNTY IS CANCELLED...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE TORNADO
THAT PROMPTED THE WARNING IS EXITING THE WARNED AREA...THUS THE
WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 AM CST TUESDAY MORNING
FOR SOUTHERN MISSOURI.

LAT...LON 3801 9168 3805 9170 3805 9171 3805 9163
      3816 9163 3816 9153 3815 9151 3804 9152
TIME...MOT...LOC 0747Z 250DEG 52KT 3814 9139

$$

CRAMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 16, 10:55 PM CST	Severe Thunderstorm Warning	SGF	Cedar, St. Clair	25 min
Jan 16, 11:08 PM CST	Tornado Warning	SGF	Hickory, Polk, St. Clair	35 min
Jan 16, 11:29 PM CST	Tornado Warning	SGF	Camden, Dallas	46 min
Jan 16, 11:53 PM CST	Tornado Warning	SGF	Dallas, Hickory	20 min
Jan 16, 11:58 PM CST	Tornado Warning	SGF	Miller	47 min
Jan 17, 12:18 AM CST	Tornado Warning	SGF	Camden	42 min
Jan 17, 12:22 AM CST	Tornado Warning	SGF	Maries	53 min
Jan 17, 12:41 AM CST	Tornado Warning	SGF	Miller, Pulaski	29 min
Jan 17, 12:57 AM CST	Tornado Warning	SGF	Maries	48 min
Jan 17, 2:55 AM CST	Severe Thunderstorm Warning	SGF	Camden, Dallas, Laclede	50 min
Jan 17, 3:27 AM CST	Severe Thunderstorm Warning	SGF	Pulaski	33 min
Jan 17, 3:53 AM CST	Severe Thunderstorm Warning	SGF	Maries, Phelps	41 min

Nearby

Tornado Warnings in Missouri, 2012 Every tornado warning in 2012 Tornadoes 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.