Alert archive / South Carolina / Tornado Warnings in 2011
Tornado Warning 15, NWS Wilmington, NC
NWS Wilmington, NC issued this tornado warning at Apr 28, 2011, 10:16 AM EDT for 4 counties in South Carolina. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 28, 2011, 10:16 AM EDT (14:16 UTC)
- Expired
- Apr 28, 2011, 11:00 AM EDT
- In force
- 44 min
- Issued by
- NWS Wilmington, NC
- Area
- Storm-based polygon
Counties Dillon County, SC, Florence County, SC, Horry County, SC, Marion County, SC
The radar
The Wilmington radar (KLTX), 80 km from the middle of the area, began a volume at 14:17 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 28, 4:30 AM EDT | Tornado Watch | SPC | 10 hr |
| Apr 28, 8:48 AM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 2.3 hours before the alert went out and 153 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
- 1847 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 685 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 10.6
The text
As transmitted, in the capitals the NWS used until 2016.
777 WFUS52 KILM 281416 TORILM SCC033-041-051-067-281500- /O.NEW.KILM.TO.W.0015.110428T1416Z-110428T1500Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE WILMINGTON NC 1016 AM EDT THU APR 28 2011 THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A * TORNADO WARNING FOR... NORTHERN HORRY COUNTY IN NORTHEAST SOUTH CAROLINA MARION COUNTY IN NORTHEAST SOUTH CAROLINA EASTERN FLORENCE COUNTY IN NORTHEAST SOUTH CAROLINA SOUTHEASTERN DILLON COUNTY IN NORTHEAST SOUTH CAROLINA * UNTIL 1100 AM EDT * AT 1013 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PAMPLICO... OR ABOUT 14 MILES NORTHEAST OF LAKE CITY...MOVING NORTHEAST AT 50 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE... BRITTON NECK... RAINS... GAPWAY... MULLINS... BAYBORO... GREEN SEA... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... GET UNDER A TABLE OR OTHER PIECE OF STURDY FURNITURE. SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EDT THURSDAY AFTERNOON FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA. && PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 877-633-6772...WHEN YOU CAN DO SO SAFELY. LAT...LON 3437 7916 3405 7882 3384 7957 3404 7967 TIME...MOT...LOC 1416Z 245DEG 45KT 3400 7951 $$ HAWKINS
3 follow-up statements
417 WWUS52 KILM 281429 SVSILM SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON NC 1029 AM EDT THU APR 28 2011 SCC033-041-051-067-281500- /O.CON.KILM.TO.W.0015.000000T0000Z-110428T1500Z/ DILLON SC-FLORENCE SC-MARION SC-HORRY SC- 1029 AM EDT THU APR 28 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR NORTHERN HORRY...MARION...EAST CENTRAL FLORENCE AND SOUTHEASTERN DILLON COUNTIES... AT 1025 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR RAINS...OR 9 MILES SOUTH OF MARION...MOVING NORTHEAST AT 55 MPH. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GALIVANTS FERRY...AYNOR...GAPWAY...SMITHBORO...MULLINS...FORK...BAYBORO... NICHOLS...KEMPER...LAKE VIEW...ALLSBROOK...GREEN SEA AND LORIS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EDT THURSDAY AFTERNOON FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA. && PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 877-633-6772...WHEN YOU CAN DO SO SAFELY. LAT...LON 3387 7947 3411 7956 3437 7916 3405 7882 TIME...MOT...LOC 1429Z 241DEG 47KT 3408 7933 $$ HAWKINS
173 WWUS52 KILM 281449 SVSILM SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON NC 1049 AM EDT THU APR 28 2011 SCC041-281457- /O.CAN.KILM.TO.W.0015.000000T0000Z-110428T1500Z/ FLORENCE SC- 1049 AM EDT THU APR 28 2011 ...THE TORNADO WARNING FOR EAST CENTRAL FLORENCE COUNTY IS CANCELED... THE STORM HAS MOVED OUT OF FLORENCE COUNTY...THUS THE WARNING WAS CANCELED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EDT THURSDAY AFTERNOON FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA. PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 877-633-6772...WHEN YOU CAN DO SO SAFELY. LAT...LON 3405 7917 3425 7931 3436 7915 3413 7890 TIME...MOT...LOC 1447Z 241DEG 47KT 3419 7908 $$ SCC033-051-067-281500- /O.CON.KILM.TO.W.0015.000000T0000Z-110428T1500Z/ DILLON SC-MARION SC-HORRY SC- 1049 AM EDT THU APR 28 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR NORTH CENTRAL HORRY...NORTHEASTERN MARION AND SOUTHEASTERN DILLON COUNTIES... AT 1042 AM EDT...A POSSIBLE TORNADO WAS DETECTED BY DOPPLER RADAR NEAR NICHOLS...OR 7 MILES SOUTHEAST OF MULLINS...MOVING NORTHEAST AT 55 MPH. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GREEN SEA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EDT THURSDAY AFTERNOON FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA. && HAWKINS PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 877-633-6772...WHEN YOU CAN DO SO SAFELY. LAT...LON 3405 7917 3425 7931 3436 7915 3413 7890 TIME...MOT...LOC 1447Z 241DEG 47KT 3419 7908 $$ HAWKINS
949 WWUS52 KILM 281457 SVSILM SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON NC 1057 AM EDT THU APR 28 2011 SCC033-051-067-281506- /O.EXP.KILM.TO.W.0015.000000T0000Z-110428T1500Z/ DILLON SC-MARION SC-HORRY SC- 1057 AM EDT THU APR 28 2011 ...THE TORNADO WARNING FOR NORTH CENTRAL HORRY...NORTHEASTERN MARION AND SOUTHEASTERN DILLON COUNTIES WILL EXPIRE AT 1100 AM EDT... AT 1056 AM EDT...THE THUNDERSTORM PRODUCING THE POSSIBLE TORNADO WHICH PROMPTED THE WARNING HAS WEAKENED...THUS THE TORNADO WARNING WAS ALLOWED TO EXPIRE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EDT THURSDAY AFTERNOON FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA. PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 877-633-6772...WHEN YOU CAN DO SO SAFELY. LAT...LON 3405 7917 3425 7931 3436 7915 3413 7890 TIME...MOT...LOC 1453Z 241DEG 47KT 3423 7899 $$ HAWKINS
The office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:14 AM EDT | Severe Thunderstorm Warning | ILM | Darlington, Marlboro | 61 min |
| Apr 28, 8:12 AM EDT | Severe Thunderstorm Warning | ILM | Dillon, Florence, Marion, Williamsburg | 63 min |
| Apr 28, 8:31 AM EDT | Tornado Warning | ILM | Florence, Marion | 24 min |
| Apr 28, 9:37 AM EDT | Severe Thunderstorm Warning | ILM | Florence, Marion, Williamsburg | 53 min |
| Apr 28, 9:40 AM EDT | Special Weather Statement | ILM | Horry | 50 min |
| Apr 28, 10:41 AM EDT | Severe Thunderstorm Warning | ILM | Dillon, Florence, Horry, Marion | 64 min |
| Apr 28, 11:09 AM EDT | Special Marine Warning | ILM | 54 min | |
| Apr 28, 11:17 AM EDT | Special Weather Statement | ILM | Darlington, Marlboro | 58 min |
| Apr 28, 11:33 AM EDT | Severe Thunderstorm Warning | ILM | Darlington, Dillon, Florence, Marlboro | 57 min |
| Apr 28, 11:51 AM EDT | Special Weather Statement | ILM | Dillon | 54 min |
| Apr 28, 12:15 PM EDT | Tornado Warning | ILM | Dillon, Marlboro | 34 min |
| Apr 28, 12:42 PM EDT | Tornado Warning | ILM | Dillon | 48 min |
| Apr 28, 1:51 PM EDT | Special Weather Statement | ILM | Dillon, Florence, Marion | 54 min |
| Apr 28, 2:01 PM EDT | Special Weather Statement | ILM | Williamsburg | 59 min |
| Apr 28, 2:24 PM EDT | Severe Thunderstorm Warning | ILM | Dillon, Horry, Marion | 51 min |
| Apr 28, 3:55 PM EDT | Special Weather Statement | ILM | Horry | 50 min |
Nearby
Tornado Warnings in South Carolina, 2011Every tornado warning in 2011Tornadoes in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.