Alert archive / West Virginia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 59, NWS Charleston, WV
NWS Charleston, WV issued this severe thunderstorm warning at Jul 31, 1999, 10:49 PM EDT for Ritchie County, West Virginia. It was in force for 26 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
- Jul 31, 1999, 10:49 PM EDT (02:49 UTC)
- Expired
- Jul 31, 1999, 11:15 PM EDT
- In force
- 26 min
- Issued by
- NWS Charleston, WV
- Area
- Whole counties
County Ritchie County, WV
The radar
The Charleston,WV radar (KRLX), 112 km from the middle of the area, began a volume at 02:52 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 31, 10:55 PM EDT | Thunderstorm Wind | Pennsboro, WV | Trees were blown down across Route 74. |
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
Pittsburgh, PA (KPIT), launched 00:00Z, 2.8 hours before the alert went out and 160 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
- 1923 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1819 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.0
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 Charleston, WV wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 7:00 PM EDT, 3 hours 49 minutes earlier.
Area forecast discussion, Jul 31, 7:00 PM EDT, 3 hours 49 minutes before
WVZ005>011-013>020-024>040-046-047-VAZ003-004-OHZ066-067-075-076- 083>087-KYZ101>103-105-010730- AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHARLESTON WV 700 PM EDT SAT JUL 31 1999 CURRENT AFTERNOON FORECAST LOOKS GOOD. WILL ONLY UPDATE FOR TAKING OUT ADVISORY AS OF 7 PM. .RLX...NONE .END/AAR
The office that day
Everything else NWS Charleston, WV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 11:08 PM EDT | Severe Thunderstorm Warning | RLX | Doddridge | 37 min |
| Jul 31, 9:12 PM EDT | Severe Thunderstorm Warning | RLX | Morgan | 33 min |
| Jul 31, 9:26 PM EDT | Tornado Warning | RLX | Perry | 19 min |
| Jul 31, 9:35 PM EDT | Severe Thunderstorm Warning | RLX | Athens | 25 min |
| Jul 31, 10:25 PM EDT | Severe Thunderstorm Warning | RLX | Athens | 35 min |
Nearby
Severe Thunderstorm Warnings in West Virginia, 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; radar from the NEXRAD Level II archive.