Alert archive / Missouri / Tornado Warnings in 2007

Tornado Warning 2, NWS St. Louis, MO

March 1, 2007Marion County, Missouri

NWS St. Louis, MO issued this tornado warning at Mar 1, 2007, 2:22 AM CST for Marion County, Missouri. It was in force for 23 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 1, 2007, 2:22 AM CST (08:22 UTC)
Expired: Mar 1, 2007, 2:45 AM CST
In force: 23 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Marion County, MO

The radar

The St Louis radar (KLSX), 133 km from the middle of the area, began a volume at 08:25 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
Mar 1, 12:16 AM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 8.4 hours before the alert went out and 223 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: 976 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 533 m²/s²
0-3 km storm-relative helicity: 631 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.

000 
WFUS53 KLSX 010821
TORLSX
MOC127-010845-
/O.NEW.KLSX.TO.W.0002.070301T0822Z-070301T0845Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
222 AM CST THU MAR 1 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN MARION COUNTY IN NORTHEAST MISSOURI

* UNTIL 245 AM CST

* AT 220 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES SOUTHWEST OF
  HANNIBAL...OR ABOUT NEAR HANNIBAL...MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...
 HANNIBAL

THIS TORNADO WARNING IS AN UPGRADE TO THE SEVERE THUNDERSTORM WARNING
PREVIOUSLY ISSUED FOR THE WARNED AREA.

TORNADOES ARE DIFFICULT TO SEE AT NIGHT...SO DO NOT WAIT. TAKE COVER
NOW

LAT...LON 3980 9139 3978 9137 3973 9137 3970 9132
      3969 9132 3969 9156 3970 9157 3969 9163
      3984 9144

$$

CARNEY

1 follow-up statement

000 
WWUS53 KLSX 010839
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
239 AM CST THU MAR 1 2007

MOC127-010849-
/O.EXP.KLSX.TO.W.0002.000000T0000Z-070301T0845Z/
MARION MO-
239 AM CST THU MAR 1 2007

...THE TORNADO WARNING FOR SOUTHEASTERN MARION COUNTY EXPIRES AT 245
AM CST...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY.

ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM.

LAT...LON 3980 9139 3978 9137 3973 9137 3970 9132
      3969 9132 3969 9156 3970 9157 3969 9163
      3984 9144

$$

CARNEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 9:59 PM CST	Severe Thunderstorm Warning	LSX	Marion, Monroe, Shelby	46 min
Mar 1, 2:05 AM CST	Severe Thunderstorm Warning	LSX	Lewis, Marion	55 min
Mar 1, 2:06 AM CST	Severe Thunderstorm Warning	LSX	Lewis, Marion	54 min
Mar 1, 2:10 AM CST	Tornado Warning	LSX	Ralls	27 min
Mar 1, 3:57 AM CST	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Moniteau	48 min
Mar 1, 4:38 AM CST	Severe Thunderstorm Warning	LSX	Callaway	52 min
Mar 1, 5:05 AM CST	Severe Thunderstorm Warning	LSX	Montgomery	40 min
Mar 1, 6:58 AM CST	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	47 min
Mar 1, 7:12 AM CST	Tornado Warning	LSX	Crawford, Franklin	48 min
Mar 1, 7:34 AM CST	Tornado Warning	LSX	Reynolds	41 min
Mar 1, 7:53 AM CST	Tornado Warning	LSX	Franklin, Saint Charles, Saint Louis	52 min
Mar 1, 8:37 AM CST	Severe Thunderstorm Warning	LSX	Jefferson, Washington	38 min
Mar 1, 8:43 AM CST	Severe Thunderstorm Warning	LSX	Saint Charles	24 min
Mar 1, 10:47 AM CST	Wind Advisory	LSX	Audrain, Boone, Callaway, Cole, Crawford, Franklin and 23 more	13 hr

Nearby

Tornado Warnings in Missouri, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.