Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 165, NWS St. Louis, MO

May 23, 1998Monroe County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 23, 1998, 6:24 PM CDT for Monroe County, Missouri. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 23, 1998, 6:24 PM CDT (23:24 UTC)
Expired: May 23, 1998, 7:15 PM CDT
In force: 51 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Monroe County, MO

The radar

The St Louis radar (KLSX), 144 km from the middle of the area, began a volume at 23:25 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.

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 23, 5:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.4 hours before the alert went out and 268 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: 780 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

967 
WUUS1 KSTL 232325 RRA
SVRSTL
MOC137-240015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
624 PM CDT SAT MAY 23 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONROE COUNTY MISSOURI IN NORTHEASTERN MISSOURI

* UNTIL 715 PM CDT

* AT 623 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM JUST SOUTHEAST OF MADISON... MOVING NORTHEAST
  AT 30 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  PARIS
  MONROE CITY
  MARK TWAIN LAKE AREA

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60
MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE
TO AN INTERIOR ROOM ON THE LOWEST FLOOR OR YOUR HOME OR BUSINESS.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

FG/GKS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 4:10 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	50 min
May 23, 4:29 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	46 min
May 23, 5:12 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	33 min
May 23, 5:30 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	45 min
May 23, 5:34 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Montgomery	46 min
May 23, 5:37 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	48 min
May 23, 5:59 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis	51 min
May 23, 6:20 PM CDT	Tornado Warning	LSX	Pike	50 min

Nearby

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.