Alert archive / Missouri / Tornado Warnings in 2004

Tornado Warning 38, NWS Springfield, MO

October 18, 2004Shannon County, Missouri

NWS Springfield, MO issued this tornado warning at Oct 18, 2004, 3:33 PM CDT for Shannon County, Missouri. It was in force for 42 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: Oct 18, 2004, 3:33 PM CDT (20:33 UTC)
Expired: Oct 18, 2004, 4:15 PM CDT
In force: 42 min
Issued by: NWS Springfield, MO
Area: Counties, with a storm outline in the text

County Shannon County, MO

The radar

The St Louis radar (KLSX), 158 km from the middle of the area, began a volume at 20:34 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
Oct 18, 12:40 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.6 hours before the alert went out and 226 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: 2097 J/kg
Mixed-layer CIN: -105 J/kg
Mixed-layer LCL: 619 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 333 m²/s²
0-3 km storm-relative helicity: 320 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KSGF 182033
TORSGF
MOC203-182115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
332 PM CDT MON OCT 18 2004

THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A

* TORNADO WARNING FOR...
  SHANNON COUNTY IN SOUTH CENTRAL MISSOURI.

* UNTIL 415 PM CDT.

* AT 329 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 13 MILES SOUTHWEST OF BUNKER...OR 30 MILES EAST
  OF HOUSTON...AND MOVING EAST AT 30 MPH.

* THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHEASTERN
  SHANNON COUNTY...INCLUDING THE TOWN OF MIDRIDGE.

THE COMMUNITY OF MIDRIDGE NEEDS TO TAKE COVER NOW 

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY 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 3740 9144 3734 9145 3727 9118 3740 9119
      3741 9124

$$

CRAMER

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 18, 12:18 AM CDT	Severe Thunderstorm Warning	SGF	Miller	27 min
Oct 18, 1:38 AM CDT	Severe Thunderstorm Warning	SGF	Benton	22 min
Oct 18, 2:23 AM CDT	Severe Thunderstorm Warning	SGF	Morgan	37 min
Oct 18, 2:41 AM CDT	Severe Thunderstorm Warning	SGF	Miller	19 min
Oct 18, 3:35 PM CDT	Tornado Warning	SGF	Dent	25 min

Nearby

Tornado Warnings in Missouri, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.