Alert archive / Illinois / Tornado Warnings in 2002

Tornado Warning 14, NWS St. Louis, MO

May 7, 2002Calhoun County, Jersey County, Illinois; Lincoln County, Missouri

NWS St. Louis, MO issued this tornado warning at May 7, 2002, 2:09 AM CDT for Calhoun County, Jersey County, Illinois; Lincoln County, Missouri. It was in force for 51 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 7, 2002, 2:09 AM CDT (07:09 UTC)
Expired: May 7, 2002, 3:00 AM CDT
In force: 51 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Calhoun County, IL, Jersey County, IL, Lincoln County, MO

The radar

The St Louis radar (KLSX), 37 km from the middle of the area, began a volume at 07:11 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
May 7, 2:21 AM CDT	Thunderstorm Wind 51 E	Old Monroe, MO	The County Sheriff reported wind gusts around 60 mph. Several trees were downed in the area.
May 7, 2:26 AM CDT	Thunderstorm Wind 76 E	Portage Des Sioux, MO
May 7, 2:35 AM CDT	Thunderstorm Wind 53 E	Brussels, IL
May 7, 2:35 AM CDT	Thunderstorm Wind 53 E	Deer Plain, IL
May 7, 2:35 AM CDT	Thunderstorm Wind 53 E	Brussels, IL
May 7, 3:00 AM CDT	Thunderstorm Wind 55 E	Nutwood, IL	The County Sheriff reported large trees down blocking Highway 100.

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
May 7, 12:45 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 7.2 hours before the alert went out and 213 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: 854 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 070709
TORSTL
ILC013-083-MOC113-070800-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
209 AM CDT TUE MAY 7 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI
  SOUTHEASTERN CALHOUN COUNTY IN SOUTHWEST ILLINOIS
  WESTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 300 AM CDT

* AT 209 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR OLD MONROE. THE
  THUNDERSTORM WAS MOVING EAST AT 45 MPH...AND MAY PRODUCE A TORNADO
  AT ANY TIME

* LOCATIONS IN THE PATH...
  BEECHVILLE
  BATCHTOWN
  MEPPEN
  NUTWOOD
  DEER PLAIN
  GRAFTON
  OTTERVILLE
  ELSAH
  MCCLUSKY
  JERSEYVILLE

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW MOVE TO A
BASEMENT...UNDERGROUND STORM SHELTER...OR AN INTERIOR ROOM OR HALLWAY
ON THE LOWEST LEVEL OF A STURDY BUILDING.

LAT...LON 3906 9084 3889 9079 3894 9025 3919 9035

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 2:41 AM CDT	Tornado Warning	LSX	Madison	49 min
May 7, 3:00 AM CDT	Tornado Warning	LSX	Macoupin, Montgomery	45 min
May 7, 3:58 AM CDT	Flash Flood Warning	LSX	Calhoun, Greene, Jersey, Macoupin, Montgomery	6 hr
May 6, 11:04 PM CDT	Severe Thunderstorm Warning	LSX		41 min
May 6, 11:34 PM CDT	Severe Thunderstorm Warning	LSX		41 min
May 6, 11:45 PM CDT	Severe Thunderstorm Warning	LSX		45 min
May 7, 12:11 AM CDT	Severe Thunderstorm Warning	LSX		64 min
May 7, 12:13 AM CDT	Tornado Warning	LSX	Audrain, Callaway	62 min
May 7, 12:19 AM CDT	Severe Thunderstorm Warning	LSX		41 min
May 7, 12:38 AM CDT	Severe Thunderstorm Warning	LSX		22 min
May 7, 12:53 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
May 7, 1:04 AM CDT	Severe Thunderstorm Warning	LSX		41 min
May 7, 1:47 AM CDT	Severe Thunderstorm Warning	LSX		28 min
May 7, 2:09 AM CDT	Flash Flood Warning	LSX	Lincoln, Montgomery	5 hr
May 7, 2:23 AM CDT	Tornado Warning	LSX	Saint Charles	52 min
May 7, 3:10 AM CDT	Severe Thunderstorm Warning	LSX		60 min
May 7, 3:11 AM CDT	Severe Thunderstorm Warning	LSX		34 min
May 7, 3:18 AM CDT	Severe Thunderstorm Warning	LSX		27 min
May 7, 3:27 AM CDT	Severe Thunderstorm Warning	LSX		33 min
May 7, 3:38 AM CDT	Severe Thunderstorm Warning	LSX		52 min
May 7, 3:46 AM CDT	Severe Thunderstorm Warning	LSX		44 min
May 7, 3:49 AM CDT	Severe Thunderstorm Warning	LSX		41 min
May 7, 4:02 AM CDT	Severe Thunderstorm Warning	LSX		43 min

Nearby

Tornado Warnings in Illinois, 2002 Tornado Warnings in Missouri, 2002 Every tornado warning in 2002 Tornadoes in 2002

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.