Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 309, NWS St. Louis, MO

July 2, 2000Boone County, Cole County, Moniteau County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 2, 2000, 5:00 PM CDT for Boone County, Cole County, Moniteau County, Missouri. It was in force for 45 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jul 2, 2000, 5:00 PM CDT (22:00 UTC)
Expired: Jul 2, 2000, 5:45 PM CDT
In force: 45 min
Issued by: NWS St. Louis, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Boone County, MO, Cole County, MO, Moniteau County, MO

The radar

The St Louis radar (KLSX), 148 km from the middle of the area, began a volume at 22:03 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
Jul 2, 5:20 PM CDT	Thunderstorm Wind 55 E	Columbia, MO	Local emergency management reported scattered trees and power lines down all across town.
Jul 2, 5:27 PM CDT	Thunderstorm Wind 52 E	Centertown, MO	Storm spotters reported trees and power lines down in Centertown.

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

Springfield, MO (KSGF), launched 12:00Z, 10.0 hours before the alert went out and 249 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: 496 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1305 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

739 
WUUS53 KLSX 022159
SVRSTL
MOC019-051-135-022245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
500 PM CDT SUN JUL 2 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOONE COUNTY IN CENTRAL MISSOURI
  NORTHERN COLE COUNTY IN CENTRAL MISSOURI
  NORTHEASTERN MONITEAU COUNTY IN CENTRAL MISSOURI

* UNTIL 545 PM CDT

* AT 500 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER JAMESTOWN...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE PATH...
  EASLEY
  MIDWAY
  ASHLAND
  COLUMBIA

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

LAT...LON 3902 9259 3852 9247 3855 9219 3869 9221
          3893 9216 3918 9248

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Jul 2, 3:50 PM CDT, 1 hour 10 minutes earlier.

Area forecast discussion, Jul 2, 3:50 PM CDT, 1 hour 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
350 PM CDT SUN JUL 2 2000

AFTERNOON TMPS IN THE U80S TO ARND 90 WITH DPTS IN THE 70S HAS
RESULTED IN VRY UNSTBL AIR MASS ACRS THE RGN LATE THIS AFT.  LAPS
INDCTG CAPES IN EXCESS OF 4500 J/KG IN MANY LCTNS.  SCT TSRA HV
DVLPD OVR THE LAST HR OR SO IN AREA OF WK MCON ALG THE MS RVR.  AS
INSTABILITY IS STGLY LINKED TO DIURNAL HTG WUD THINK THIS ACTVTY WUD
TEND TO DISPT AFT SUNSET.  OTHER AREA OF INTEREST TO WATCH IS SCT
TSRA FM SW INTO WC MO WHICH ARE OCCURING IN ADVANCE OF A WK MID LVL
SHRTW WV TROF.  INSTABILITY WITH THIS ACTVTY IS ALSO BEING AIDED BY
HTG.  QUESTION THEN IS SUPPORT FOR CONTD PCPN BYD THIS EVNG.  THERE
IS A LACK OF ORGANIZATIONAL FTRS EVIDENT...BUT MDLS DO KP SWLY LLJ
ACRS THE RGN TNGT.  LASTLY POTNTL FOR ACTVTY ALG CDFNT OVR IA TO
PROP ESEWD INTO NE MO/WC IL ZNS...THIS WUD BE LATER TNGT IF IT
OCCURS ALTHO SOME ISOLD CURRENTLY POPPING UP.  PLANS ARE TO MENTION
A POP OR JUST SCT COVERAGE.

SOME QUANDRY FOR THE FCST TMW.  AVN/NGM BOTH SINK CDFNT OVR IA INTO
NRN MO BY EVNG...WHILE ETA KPS FNT FURTHER NORTH INTO IA.  AVN/NGM
VERY BULLISH ON POPS AND PCPN TMW ALSO...AS HAS BEEN THE CASE THE
LAST FEW DAYS.  HPC AND SPC APPEAR TO BE FAVORING THE ETA AS QPFS
MEAGER IN CWFA AND DY2 LACKS GNRL THUNDER OVR A LARGE AREA.  I THINK
THE FNT PSN ON THE ETA IS PROBABLY BTR BUT HV SOME CONCERNS THAT
OUTFLOW AND AN EFFECTIVE BNDRY CUD MAKE IT INTO NRN SXNS OF THE
AREA.  OUTSIDE OF THIS PSBLTY...IT APPEARS THAT WDLY SCT DIURNALLY
DRIVEN TSRA WUD PROBABLY BE THE FLAVOR THE NEXT SVRL DAYS UNTIL A
DECIDED FROPA OR ORGANIZED OUTFLOW BCMS APPARENT.

HV ALSO INCLUDE MENTION OF SOME HEAT INDICES AS TMPS APCHG 90 AND
70S DPTS HV RESULTED IN VALUES NR 100.  WL KP STATUS QUO ON TMPS.

.STL...NONE
GLASS

In the hours before

Special weather statement, Jul 2, 11:55 AM CDT, 5 hours 5 minutes before

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-030100-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1155 AM CDT SUN JUL 2 2000

THERE IS A CHANCE OF THUNDERSTORMS OVER EASTERN MISSOURI AND WESTERN
ILLINOIS THIS AFTERNOON AND TONIGHT.  PRESENT INDICATIONS ARE THAT
ANY STORMS WHICH DEVELOP SHOULD NOT BE SEVERE.

THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER
SERVICE OFFICE IN ST LOUIS.  AREAS INCLUDED ARE PORTIONS OF EASTERN
AND CENTRAL MISSOURI AND SOUTHWEST ILLINOIS.

GLASS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 5:01 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery	44 min
Jul 2, 6:20 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	40 min
Jul 2, 3:59 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	46 min
Jul 2, 4:45 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	45 min
Jul 2, 5:33 PM CDT	Flash Flood Warning	LSX	Jefferson	3 hr
Jul 2, 5:58 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	47 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2000 Every severe thunderstorm warning in 2000

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.