Alert archive / Missouri / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 116, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 4, 1999, 2:49 PM CDT for Clark County, Scotland County, Missouri. It was in force for 46 min. 2 reports 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 4, 1999, 2:49 PM CDT (19:49 UTC)
- Expired
- Jun 4, 1999, 3:35 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Clark County, MO, Scotland County, MO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 4, 3:10 PM CDT | Thunderstorm Wind 52 | Kahoka, MO | |
| Jun 4, 3:30 PM CDT | Thunderstorm Wind 55 | Kahoka, 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 4, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 7.8 hours before the alert went out and 179 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1356 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Jun 3, 3:20 PM CDT, 23 hours 29 minutes earlier.
Area forecast discussion, Jun 3, 3:20 PM CDT, 23 hours 29 minutes before
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Special weather statement, Jun 4, 1:45 PM CDT, 1 hour 4 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-042200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 145 PM CDT FRI JUN 4 1999 THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON...ESPECIALLY OVER NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. DUE TO THE VERY WARM AND HUMID AIR FUELING THESE STORMS...HAIL AND HIGH WINDS MAY OCCUR WITH SOME OF THE STRONGER STORMS. SPOTTER ACTIVATION MAY BECOME NECESSARY...SO STORM SPOTTER GROUPS AND EMERGENCY MANAGERS ARE URGED TO MONITOR WEATHER DEVELOPMENTS. THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. ARE$AS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. TRUETT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 3:39 PM CDT | Severe Thunderstorm Warning | LSX | Clark, Scotland | 46 min |
| Jun 4, 3:53 PM CDT | Severe Thunderstorm Warning | LSX | Knox, Lewis | 47 min |
| Jun 4, 4:15 PM CDT | Tornado Warning | LSX | Lewis | 35 min |
| Jun 4, 4:28 PM CDT | Severe Thunderstorm Warning | LSX | Clark | 32 min |
| Jun 4, 4:56 PM CDT | Tornado Warning | LSX | Lewis | 34 min |
| Jun 4, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 60 min |
| Jun 4, 6:45 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 60 min |
| Jun 4, 4:30 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown | 65 min |
| Jun 4, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 61 min |
| Jun 4, 5:35 PM CDT | Tornado Warning | LSX | Greene | 50 min |
| Jun 4, 5:37 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 63 min |
| Jun 4, 6:28 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette | 62 min |
| Jun 4, 6:28 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 62 min |
| Jun 4, 6:40 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 35 min |
| Jun 4, 6:52 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 63 min |
| Jun 4, 6:52 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 63 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1999Every severe thunderstorm warning 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.