Alert archive / Missouri / Tornado Warnings in 2001

Tornado Warning 4, NWS St. Louis, MO

April 10, 2001Montgomery County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 10, 2001, 7:28 PM CDT for Montgomery County, Missouri. It was in force for 62 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 10, 2001, 7:28 PM CDT (00:28 UTC)
Expired: Apr 10, 2001, 8:30 PM CDT
In force: 62 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Montgomery County, MO

The radar

The St Louis radar (KLSX), 73 km from the middle of the area, began a volume at 00:28 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.

What was reported inside it

Time	Report	Where	Remark
Apr 10, 7:40 PM CDT	Thunderstorm Wind 53 E	Mineola, MO	Thunderstorm wind gusts downed power lines in the Mineola area.
Apr 10, 7:50 PM CDT	Hail 1.75	Danville, MO
Apr 10, 7:54 PM CDT	Hail 1	New Florence, MO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 10, 7:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 280 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: 314 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 110031
TORSTL
MOC139-110130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
728 PM CDT TUE APR 10 2001

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 830 PM CDT

* AT 728 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH STRONG ROTATION 12 MILES WEST OF MINEOLA...MOVING
  EAST AT 45 MPH.  AT 730 PM A TORNADO WAS REPORTED BY AMATUER RADIO 
  OPERATOR 1 MILE NORTHEAST OF FULTON CAUSING TREE AND POWER LINE
  DAMAGE.

* LOCATIONS IN THE PATH...
  MINEOLA
  MONTGOMERY CITY
  DANVILLE
  WELLSVILLE
  BUELL
  NEW FLORENCE
  BELLFLOWER
  HIGH HILL

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IF YOU ARE IN A VEHCILE...LEAVE IT IMMEDIATELY AND GO TO A STRONG
BUILDING. DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE
EASILY TOSSED AROUND BY TORNADO WINDS. IF NO STRUCTURE IS NEARBY...
SEEK SHELTER IN A DITCH OR LOW SPOT.

LAT...LON 3916 9164 3871 9167 3x872 9144 3885 9141
          3886 9128 3915 9127

GKS/RP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:08 PM CDT	Severe Thunderstorm Warning	LSX	Audrain	67 min
Apr 10, 7:17 PM CDT	Flash Flood Warning	LSX	Boone	118 min
Apr 10, 7:49 PM CDT	Tornado Warning	LSX	Warren	56 min
Apr 10, 8:13 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	62 min
Apr 10, 8:27 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis	63 min
Apr 10, 9:08 PM CDT	Tornado Warning	LSX	City of Saint Louis	67 min

Nearby

Tornado Warnings in Missouri, 2001 Every tornado warning in 2001 Tornadoes in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.