Alert archive / South Carolina / Tornado Warnings in 1999
Tornado Warning 2, NWS Columbia, SC
NWS Columbia, SC issued this tornado warning at Feb 19, 1999, 1:35 PM EST for Calhoun County, South Carolina. It was in force for 40 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
- Feb 19, 1999, 1:35 PM EST (18:35 UTC)
- Expired
- Feb 19, 1999, 2:15 PM EST
- In force
- 40 min
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
County Calhoun County, SC
The radar
The Columbia radar (KCAE), 44 km from the middle of the area, began a volume at 18:35 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 |
|---|---|---|---|
| Feb 19, 1:54 PM EST | Hail 0.88 | St Matthews, SC | Sheriff reported nickel size hail in St. Matthews. |
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
Charleston AFB, SC (KCHS), launched 12:00Z, 6.6 hours before the alert went out and 113 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
- 18 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WFUS1 KCAE 191840 RRA TORCAE SCC017-191915- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE COLUMBIA SC 135 PM EST FRI FEB 19 1999 THE NATIONAL WEATHER SERVICE IN COLUMBIA SC HAS ISSUED A * TORNADO WARNING FOR... CALHOUN COUNTY IN SOUTH CAROLINA * UNTIL 215 PM EST * AT 134 PM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 10 MILES WEST OF RILEY. THE STORM WAS MOVING TOWARD THE EAST-NORTHEAST AT 30 MPH. * THE TORNADO WILL BE NEAR... RILEY AT 152 PM EST ST. MATTHEWS AT 157 PM EST FT MOTTE AT 210 PM EST IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. AMATEUR RADIO AND OTHER SPOTTERS ARE REQUESTED TO MONITOR THIS STORM AND RELAY REPORTS PROMPTLY TO THE NEAREST NATIONAL WEATHER SERVICE OFFICE.
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 10:13 AM EST | Severe Thunderstorm Warning | CAE | Aiken | 47 min |
| Feb 19, 12:56 PM EST | Tornado Warning | CAE | Orangeburg | 19 min |
| Feb 19, 2:22 PM EST | Severe Thunderstorm Warning | CAE | Clarendon, Orangeburg | 38 min |
Nearby
Tornado Warnings in South Carolina, 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.