Missouri, 2001

Damaging Wind and Lightning Strike in Missouri, June 20, 2001

June 20, 2001 · NWS LSX · 2 events in 1 county or zone

Thunderstorm wind gusts downed trees and power lines in the Ste. Genevieve area.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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  • Hail
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  • Cold
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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LSX wrote it up.

Thunderstorm wind gusts downed trees and power lines in the Ste. Genevieve area. A lightning strike hit a major circuit south of Ste. Genevieve along Route M knocking out power to more than 7000 customers in the north half of the County. The power was out for about 2 hours. Lightning strikes also knocked out computers at Ste. Genevieve City Hall and the city water plant.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS St. Louis, MO wrote its last area forecast discussion before the first event at Jun 20, 2:50 AM CST, 13 hours 40 minutes earlier.

Area forecast discussion, Jun 20, 2:50 AM CST, 13 hours 40 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
350 AM CDT WED JUN 20 2001

06Z SFC ANALYSIS IND RATHER DIFFUSE FNT EXTDG FM CNTRL IN WWD THRU
STL AREA AND CNTRL MO INTO SERN KS.  RADAR MOSAIC SHOWS NARROW LN OF
TSTMS HAVE DVLPD INVOF FNT WITH LRGR MCS SYS DROPPING SLOLY SEWD
INTO W CNTRL MO.

FCST PROB FOR THE MRNG PACKAGE IS THE ONGOING SAGA OF PCPN CHCS NXT
48HRS.  ALSO...HOW HVY WL PCPN GET AND WL FFA BE NEEDED?

00Z MODELS RMN IN DECENT AGRMT ON UPR FEATURES...THOUGH ON SFC
FEATURES NGM CONT TO BE SLOWEST WITH SWD PROPAGATION OF FNT.  RATHER
FLAT UPR FLO OVR NRN CONUS TO BCM MORE AMPLIFIED NXT 60HRS AS RDG
BLDS OVR ROCKIES AND TROF DIGS INTO GRTLKS RGN.  TROF AXIS XPCTD TO
PASS THRU FA LATE THU/THU EVNG.  ON SFC FEATURES...CDFNT TO MOV THRU
SRN ZONES BY THIS AFTN AND RMN S OF FA BY TNGT.  NGM IS SLOWEST OF
THE THREE MODELS AND HAS BEEN DISCARDED.  ETA/AVN FNTL POSNS CLOSELY
FOLLOWED.

FOR TDA...THREE AREAS OF PCPN WL AFFECT FCST.  FIRST IS NARROW LN OF
TSTMS JUST S OF I-70 CORR WHICH ARE SLGTLY TO N OF SFC FNT.  THESE
STMS APPEAR TO BE ELEVATED IN NATURE.  WUD XPCT THIS AREA OF TSTMS
TO DMSH BGNG ARND 15Z.  ANOTR AREA IS MCS TO OUR W.  C-VECTORS TAKE
THIS MAINLY TO THE SE ARND FA...THOUGH IT MAY IMPACT CNTRL AND NERN
MO FOR A TIME THIS MRNG...ESP AS RGT ENTR RGN OF UPR JET SETS UP AND
COAXES IT THIS WAY.  THIS PCPN AREA WL BE PREVALENT MAINLY BFR 18Z.
THIRD ITEM FOR PCPN HAS NOT DVLPD YET...AND WL BE SFC-BASED TSTMS
ALG FNT WHICH BY THIS AFTN WL BE ALG FAR SRN ZONES.  FFG INDS LOWEST
VALUES IN ERN AND NWRN ZONES.  GIVEN BEST INSTAB FOR CONVECTIVE STMS
WL EXIST ACRS I-70 CORR AND SWD (AND THIS IS IN AREA OF HIR FFG
VALUES) WL FOREGO ANY FFA AT THIS TIME.  INSTEAD...WL MENTION LCLLY
HVY RAFL POTNL THESE AREAS.  TEMPS CUD BE TRICKY GIVEN PCPN...BUT
GUIDANCE OVERALL LUKS GOOD.

FOR TNGT...MODELS ALL DVLP NEW MCS OVR SRN KS/NRN OK...BUT OVER OUR
WAY VORT MX ALG WITH LFT EXIT RGN OF JETLET ACRS SRN MO WL BREAK OUT
NEW AREA OF PCPN DURG EVNG HRS.  /OLD/ FNTL BDRY TO OUR S WL AGAIN
GET ACTIVE AS WELL.  AGAIN DO NOT ANTICIPATE A FFA FOR THIS PD WITH
BEST RAIN THREAT ACRS S...AND HIGHEST FFG VALUES THERE.  POPS WL
DECR FM SRN TO NRN ZONES.

FOR THU AND THU NITE...PCPN WL BE PREVALENT OVR SRN/ERN ZONES FM
LEFTOVERS OF MCS/EVNG CONVECTION OF NITE BFR.  TROF AXIS SWINGING
THRU DURG LATE AFTN COMBINED WITH LLVL CONV AND DECENT INSTAB MAY
TRIGGER SCT SHRA IN NRN ZONES LATE.  THIS TO CARRYOVER SUM INTO EVNG
HRS.

.STL...NONE
TES

The radar

The St Louis radar (KLSX), 97 km away, was scanning. The volume nearest the first event began at 22:29 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind, 1 lightning. Local standard time, as filed.

Thunderstorm Wind, Ste. Genevieve

When
June 20, 4:30 PM CST
Where
Ste. Genevieve County, Ste Genevieve
Measured
50 kt (58 mph)
Reported by
NEWSPAPER
Coordinates
37.983, -90.050

Lightning, Ste. Genevieve

When
June 20, 4:30 PM CST
Where
Ste. Genevieve County, 2 mi S of Ste Genevieve
Reported by
NEWSPAPER
Coordinates
37.894, -90.194 (the zone’s center; the record gives no point)

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Lightning
A lightning strike that killed, injured or caused damage.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Missouri in 2001Every state in 2001This day in weather historyWarnings in Missouri, June 2001

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5257972, 5257973.