Alert archive / Missouri / Tornado Warnings in 2010

Tornado Warning 82, NWS St. Louis, MO

December 31, 2010Montgomery County, Pike County, Missouri

NWS St. Louis, MO issued this tornado warning at Dec 31, 2010, 10:47 AM CST for Montgomery County, Pike County, Missouri. It was in force for 13 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, 10:47 AM CST (16:47 UTC)
Expired: Dec 31, 2010, 11:00 AM CST
In force: 13 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

Counties Montgomery County, MO, Pike County, MO

The radar

The St Louis radar (KLSX), 78 km from the middle of the area, began a volume at 16:48 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, 4.8 hours before the alert went out and 257 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.

657 
WFUS53 KLSX 311647
TORLSX
MOC139-163-311700-
/O.NEW.KLSX.TO.W.0082.101231T1647Z-101231T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1047 AM CST FRI DEC 31 2010

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHWESTERN PIKE COUNTY IN NORTHEAST MISSOURI...

* UNTIL 1100 AM CST

* AT 1043 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 7 MILES SOUTHWEST OF NEW HARTFORD...OR 12 MILES
  EAST OF WELLSVILLE...AND MOVING NORTHEAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NEW HARTFORD.

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 3931 9140 3917 9123 3914 9125 3914 9126
      3909 9127 3907 9127 3915 9142 3932 9144
TIME...MOT...LOC 1647Z 235DEG 52KT 3915 9129

$$

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, 10:08 AM CST	Tornado Warning	LSX	Audrain, Callaway, Montgomery, Pike	37 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, 10:56 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.