Alert archive / Illinois / Tornado Warnings in 1998

Tornado Warning 101, NWS St. Louis, MO

November 10, 1998Calhoun County, Pike County, Illinois

NWS St. Louis, MO issued this tornado warning at Nov 10, 1998, 1:42 AM CST for Calhoun County, Pike County, Illinois. It was in force for 48 min. 1 report 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: Nov 10, 1998, 1:42 AM CST (07:42 UTC)
Expired: Nov 10, 1998, 2:30 AM CST
In force: 48 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Calhoun County, IL, Pike County, IL

The radar

The St Louis radar (KLSX), 78 km from the middle of the area, began a volume at 07:42 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
Nov 10, 2:05 AM CST	Thunderstorm Wind 56	Pleasant Hill, IL

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
Nov 10, 1:15 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 7.7 hours before the alert went out and 204 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: 550 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 561 m²/s²
0-3 km storm-relative helicity: 703 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.

052 
WFUS1 KSTL 100744 RRA
TORSTL
ILC013-149-100830-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
142 AM CST TUE NOV 10 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CALHOUN COUNTY IN SOUTHWESTERN ILLINOIS
  SOUTHERN PIKE COUNTY ILLINOIS IN WEST CENTRAL ILLINOIS

* UNTIL 230 AM CST

* AT 140 AM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 4 MILES SOUTHEAST OF CLARKSVILLE... MOVING MOVING TO THE
  NORTHEAST AT 50 MPH.

* LOCATIONS IN THE PATH...
  BELLEVIEW
  PLEASANT HILL
  NEBO
  PEARL



IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW A
BASEMENT OFFERS THE BEST PROTECTION. IF NOT AVAILABLE...MOVE TO
THE LOWEST FLOOR AND SEEK SHELTER IN A SMALL INTERIOR ROOM. STAY
AWAY FROM OUTSIDE WALLS AND WINDOWS. MOBILE HOMES SHOULD BE
ABANDONED IN FAVOR OF A MORE SUBSTANTIAL STRUCTURE. DO NOT TRY TO
OUTRUN A TORNADO IN A VEHICLE

GKS/FG

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 10, 3:08 AM CST	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	62 min
Nov 10, 3:29 AM CST	Severe Thunderstorm Warning	LSX	Calhoun	61 min
Nov 10, 3:45 AM CST	Severe Thunderstorm Warning	LSX	Greene, Jersey	65 min
Nov 10, 4:10 AM CST	Severe Thunderstorm Warning	LSX	Macoupin, Madison	65 min
Nov 10, 4:10 AM CST	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	65 min
Nov 10, 4:38 AM CST	Severe Thunderstorm Warning	LSX	Bond, Montgomery	62 min
Nov 10, 5:12 AM CST	Severe Thunderstorm Warning	LSX	Fayette	63 min

Nearby

Tornado Warnings in Illinois, 1998 Every tornado warning in 1998 Tornadoes in 1998

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.