Alert archive / Missouri / Tornado Warnings in 2010

Tornado Warning 78, NWS St. Louis, MO

December 31, 20104 counties in Missouri

NWS St. Louis, MO issued this tornado warning at Dec 31, 2010, 10:08 AM CST for 4 counties in Missouri. It was in force for 37 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: Dec 31, 2010, 10:08 AM CST (16:08 UTC)
Expired: Dec 31, 2010, 10:45 AM CST
In force: 37 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Audrain County, MO, Callaway County, MO, Montgomery County, MO, Pike County, MO

The radar

The St Louis radar (KLSX), 83 km from the middle of the area, began a volume at 16:09 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
Dec 31, 7:29 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 4.1 hours before the alert went out and 267 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 506 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 450 m²/s²
0-3 km storm-relative helicity: 427 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.

550 
WFUS53 KLSX 311608
TORLSX
MOC007-027-139-163-311645-
/O.NEW.KLSX.TO.W.0078.101231T1608Z-101231T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1008 AM CST FRI DEC 31 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...
  NORTHEASTERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHWESTERN PIKE COUNTY IN NORTHEAST MISSOURI...

* UNTIL 1045 AM CST

* AT 1005 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 5 MILES NORTHWEST OF WILLIAMSBURG...OR 12 MILES
  NORTHEAST OF FULTON...AND MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WELLSVILLE...VANDALIA...SHAMROCK...MARTINSBURG...BUELL...
  LADDONIA...FARBER...NEW HARTFORD AND MIDDLETOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.

&&

LAT...LON 3933 9157 3932 9145 3922 9118 3915 9120
      3914 9122 3914 9126 3911 9127 3886 9175
      3899 9191
TIME...MOT...LOC 1609Z 227DEG 46KT 3900 9173

$$

MILLER

1 follow-up statement

336 
WWUS53 KLSX 311626
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1026 AM CST FRI DEC 31 2010

MOC027-311636-
/O.CAN.KLSX.TO.W.0078.000000T0000Z-101231T1645Z/
CALLAWAY MO-
1026 AM CST FRI DEC 31 2010

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

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

LAT...LON 3913 9164 3933 9157 3932 9145 3922 9118
      3915 9120 3914 9122 3914 9126 3911 9128
      3896 9164
TIME...MOT...LOC 1626Z 227DEG 46KT 3915 9152

$$

MOC007-139-163-311645-
/O.CON.KLSX.TO.W.0078.000000T0000Z-101231T1645Z/
MONTGOMERY MO-AUDRAIN MO-PIKE MO-
1026 AM CST FRI DEC 31 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL AUDRAIN
COUNTY IN CENTRAL MISSOURI...AND MONTGOMERY COUNTY IN EAST CENTRAL
MISSOURI...AND SOUTHWESTERN PIKE COUNTY IN NORTHEAST MISSOURI UNTIL
1045 AM CST...

AT 1022 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR WELLSVILLE...MOVING NORTHEAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  VANDALIA...FARBER...NEW HARTFORD AND MIDDLETOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3913 9164 3933 9157 3932 9145 3922 9118
      3915 9120 3914 9122 3914 9126 3911 9128
      3896 9164
TIME...MOT...LOC 1626Z 227DEG 46KT 3915 9152

$$

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 31, 2:26 AM CST	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Osage	49 min
Dec 31, 3:05 AM CST	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	40 min
Dec 31, 9:41 AM CST	Severe Thunderstorm Warning	LSX	Callaway	34 min
Dec 31, 10:11 AM CST	Tornado Warning	LSX	Crawford, Franklin, Gasconade	64 min
Dec 31, 10:13 AM CST	Tornado Warning	LSX	Crawford, Franklin, Washington	62 min
Dec 31, 10:22 AM CST	Tornado Warning	LSX	Pike	38 min
Dec 31, 10:47 AM CST	Tornado Warning	LSX	Montgomery, Pike	13 min
Dec 31, 10:56 AM CST	Tornado Warning	LSX	Crawford, Franklin, Jefferson, Saint Charles, Saint Louis, Warren and 1 more	64 min
Dec 31, 11:00 AM CST	Tornado Warning	LSX	Lincoln, Pike	60 min
Dec 31, 11:15 AM CST	Tornado Warning	LSX	Lincoln, Montgomery, Pike	45 min
Dec 31, 11:22 AM CST	Tornado Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Washington, City of Saint Louis	53 min
Dec 31, 11:59 AM CST	Tornado Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	61 min
Dec 31, 12:29 PM CST	Tornado Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois	31 min
Dec 31, 12:57 PM CST	Tornado Warning	LSX	Sainte Genevieve	48 min
Dec 31, 1:11 PM CST	Tornado Warning	LSX	Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois	49 min
Dec 31, 1:44 PM CST	Tornado Warning	LSX	Sainte Genevieve	61 min
Dec 31, 2:00 PM CST	Tornado Warning	LSX	Madison, Sainte Genevieve, Saint Francois	60 min

Nearby

Tornado Warnings in Missouri, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.