Alert archive / Illinois / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 9, NWS St. Louis, MO

March 27, 1998Pike County, Illinois; Pike County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 27, 1998, 4:53 PM CST for Pike County, Illinois; Pike County, Missouri. It was in force for 37 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: Mar 27, 1998, 4:53 PM CST (22:53 UTC)
Expired: Mar 27, 1998, 5:30 PM CST
In force: 37 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Pike County, IL, Pike County, MO

The radar

The St Louis radar (KLSX), 92 km from the middle of the area, began a volume at 22:55 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
Mar 27, 5:05 PM CST	Thunderstorm Wind 51	Bowling Green, MO	The roof of a motel was damaged by thunderstorm wind gusts.

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
Mar 27, 4:30 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 220 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: 935 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 308 m²/s²
0-3 km storm-relative helicity: 330 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 
TTAA00 KSTL 272252 RRA
SVRSTL
ILC149-MOC163-272330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
453 PM CST FRI MAR 27 1998
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL ILLINOIS
 
   ...PIKE COUNTY
 
 
IN EAST CENTRAL MISSOURI
 
   ...PIKE COUNTY
 
AT 450 PM...WEATHER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM
JUST WEST OF BOWLING GREEN TO NEAR WARRENTON.
 
THIS LINE WAS MOVING EAST-NORTHEAST AT 50 MPH.  PEOPLE IN BOWLING
GREEN...LOUISIANA...AND PITTSFIELD CAN EXPECT WINDS IN EXCESS OF 70 MPH.
 
 
THIS STORM HAS A HISTORY OF DAMAGING WINDS. SEEK INSIDE SHELTER
NOW!
 
REMEMBER...A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
IF OUTDOORS...SEEK INSIDE SHELTER IMMEDIATELY. STAY AWAY FROM
WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 5:10 PM CST	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey	50 min
Mar 27, 5:46 PM CST	Severe Thunderstorm Warning	LSX	Macoupin, Madison	59 min
Mar 27, 5:49 PM CST	Severe Thunderstorm Warning	LSX	Brown	26 min
Mar 27, 3:47 PM CST	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole	43 min
Mar 27, 3:47 PM CST	Severe Thunderstorm Warning	LSX	Osage	43 min
Mar 27, 4:02 PM CST	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Washington	58 min
Mar 27, 4:02 PM CST	Severe Thunderstorm Warning	LSX	Iron, Reynolds	58 min
Mar 27, 4:10 PM CST	Severe Thunderstorm Warning	LSX	Montgomery, Warren	50 min
Mar 27, 4:40 PM CST	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis	50 min
Mar 27, 4:40 PM CST	Severe Thunderstorm Warning	LSX	Lincoln	50 min
Mar 27, 4:40 PM CST	Severe Thunderstorm Warning	LSX	City of Saint Louis	50 min
Mar 27, 4:57 PM CST	Severe Thunderstorm Warning	LSX	Iron, Reynolds, Washington	48 min
Mar 27, 5:26 PM CST	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	49 min
Mar 27, 5:26 PM CST	Severe Thunderstorm Warning	LSX	Saint Charles	49 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1998 Severe Thunderstorm Warnings in Missouri, 1998 Every severe thunderstorm warning 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.