Alert archive / Illinois / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 143, NWS St. Louis, MO

May 27, 1996Pike County, Illinois; Pike County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 1996, 2:07 AM CDT for Pike County, Illinois; Pike County, Missouri. It was in force for 53 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: May 27, 1996, 2:07 AM CDT (07:07 UTC)
Expired: May 27, 1996, 3:00 AM CDT
In force: 53 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 07:06 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 27, 2:50 AM CDT	Thunderstorm Wind 58	Barry, 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 nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 7.1 hours before the alert went out and 242 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: 632 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 373 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 270708
SVRSTL
ILC001-149-MOC163-270800-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
207 AM CDT MON MAY 27 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL ILLINOIS
 
   ...ADAMS COUNTY...PIKE COUNTY
 
 
IN EAST CENTRAL MISSOURI
 
   ...PIKE COUNTY
 
AT 205 AM...WEATHER SERVICE RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS FROM QUINCY SOUTHWARD THROUGH VANDALIA MISSOURI MOVING
EAST AT 30 MPH. TOWNS IN THE PATH ARE CAMP
POINT...PAYSON...BARRY...PITTSFIELD...LOUSIANNA AND BOWLING GREEN.
 
 
THIS IS A DANGEROUNS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL
AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 2:07 AM CDT	Severe Thunderstorm Warning	LSX	Adams	53 min
May 27, 2:30 AM CDT	Severe Thunderstorm Warning	LSX	Brown	30 min
May 27, 3:33 AM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey	42 min
May 27, 4:39 AM CDT	Severe Thunderstorm Warning	LSX	Monroe	51 min
May 27, 4:56 AM CDT	Severe Thunderstorm Warning	LSX	Randolph, Saint Clair	49 min
May 27, 12:31 AM CDT	Severe Thunderstorm Warning	LSX	Moniteau	44 min
May 27, 12:41 AM CDT	Severe Thunderstorm Warning	LSX	Boone	64 min
May 27, 12:53 AM CDT	Tornado Warning	LSX	Boone	52 min
May 27, 12:59 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe	46 min
May 27, 1:15 AM CDT	Severe Thunderstorm Warning	LSX	Callaway	30 min
May 27, 1:41 AM CDT	Tornado Warning	LSX	Callaway	34 min
May 27, 1:46 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Ralls	29 min
May 27, 1:58 AM CDT	Severe Thunderstorm Warning	LSX	Montgomery	32 min
May 27, 2:44 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln	46 min
May 27, 5:45 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	45 min
May 27, 6:17 PM CDT	Severe Thunderstorm Warning	LSX	Knox	43 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1996 Severe Thunderstorm Warnings in Missouri, 1996 Every severe thunderstorm warning in 1996

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.