Alert archive / Missouri / Tornado Warnings in 1999

Tornado Warning 34, NWS St. Louis, MO

June 1, 1999Crawford County, Missouri

NWS St. Louis, MO issued this tornado warning at Jun 1, 1999, 6:34 PM CDT for Crawford County, Missouri. It was in force for 51 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
Jun 1, 1999, 6:34 PM CDT (23:34 UTC)
Expired
Jun 1, 1999, 7:25 PM CDT
In force
51 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Crawford County, MO

The radar

The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 23:38 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

TimeReportWhereRemark
Jun 1, 7:05 PM CDTTornado F0Steelville, MO

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.

IssuedProductOfficeLasted
Jun 1, 3:45 PM CDTTornado WatchSPC6 hr
Jun 1, 5:30 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.6 hours before the alert went out and 251 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 1999-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 1999-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 261 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
20 J/kg
Mixed-layer CIN
-321 J/kg
Mixed-layer LCL
1581 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
261 m²/s²
0-3 km storm-relative helicity
270 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

818 
WFUS1 KSTL 012335 RRA
TORSTL
MOC055-020025-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
634 PM CDT TUE JUN 1 1999

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  CRAWFORD COUNTY IN CENTRAL MISSOURI

* UNTIL 725 PM CDT

* AT 633 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO NEAR ST JAMES... MOVING MOVING EAST NORTHEAST AT 30 MPH.

* LOCATIONS IN THE PATH...
  CUBA
  BOURBON
  ALL LOCATIONS ALONG I-44

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW A
BASEMENT OFFERS THE BEST PROTECTION. IF NOT AVAILABLE...MOVE TO
THE LOWEST FLOOR AND SEEK SHELTER IN A SMALL INTERIOR ROOM. STAY
AWAY FROM OUTSIDE WALLS AND WINDOWS. MOBILE HOMES SHOULD BE
ABANDONED IN FAVOR OF A MORE SUBSTANTIAL STRUCTURE. DO NOT TRY TO
OUTRUN A TORNADO IN A VEHICLE

FG/RP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 3:17 PM CDTSevere Thunderstorm WarningLSXShelby48 min
Jun 1, 3:27 PM CDTSevere Thunderstorm WarningLSXLewis48 min
Jun 1, 3:37 PM CDTSevere Thunderstorm WarningLSXMonroe48 min
Jun 1, 3:44 PM CDTSevere Thunderstorm WarningLSXMarion51 min
Jun 1, 4:06 PM CDTSevere Thunderstorm WarningLSXShelby34 min
Jun 1, 4:12 PM CDTTornado WarningLSXCole48 min
Jun 1, 4:19 PM CDTSevere Thunderstorm WarningLSXRalls51 min
Jun 1, 4:24 PM CDTSevere Thunderstorm WarningLSXBoone, Callaway51 min
Jun 1, 4:33 PM CDTSevere Thunderstorm WarningLSXLewis47 min
Jun 1, 5:01 PM CDTSevere Thunderstorm WarningLSXCole, Osage49 min
Jun 1, 5:11 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds49 min
Jun 1, 5:22 PM CDTSevere Thunderstorm WarningLSXMontgomery48 min
Jun 1, 5:48 PM CDTSevere Thunderstorm WarningLSXMadison47 min
Jun 1, 5:49 PM CDTTornado WarningLSXLincoln51 min
Jun 1, 6:44 PM CDTSevere Thunderstorm WarningLSXFranklin51 min
Jun 1, 6:50 PM CDTTornado WarningLSXFranklin50 min

Nearby

Tornado Warnings in Missouri, 1999Every tornado warning in 1999Tornadoes in 1999

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.