Alert archive / North Carolina / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 366, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Oct 18, 2012, 8:59 PM EDT for 4 counties in North Carolina. It was in force for 63 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 18, 2012, 8:59 PM EDT (00:59 UTC)
- Expired
- Oct 18, 2012, 10:02 PM EDT
- In force
- 63 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
Counties Davidson County, NC, Forsyth County, NC, Guilford County, NC, Randolph County, NC
The radar
The Roanoke radar (KFCX), 115 km from the middle of the area, began a volume at 00:59 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 |
|---|---|---|---|
| Oct 18, 10:00 PM EDT | TSTM WND DMG | 2 Se Summerfield, NC | DOT WAS DISPATCHED TO REMOVE A COUPLE OF TREES IN THE ROAD AFTER A MOTORIST CRASHED INTO THEM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.0 hours before the alert went out and 6 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
- 744 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 810 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
899
WUUS52 KRAH 190059
SVRRAH
NCC057-067-081-151-190215-
/O.NEW.KRAH.SV.W.0366.121019T0059Z-121019T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
859 PM EDT THU OCT 18 2012
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN DAVIDSON COUNTY IN CENTRAL NORTH CAROLINA
EASTERN FORSYTH COUNTY IN CENTRAL NORTH CAROLINA
GUILFORD COUNTY IN CENTRAL NORTH CAROLINA
NORTHERN RANDOLPH COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 1015 PM EDT
* AT 855 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 9 MILES NORTHWEST OF THOMASVILLE...OR 10 MILES
NORTH OF LEXINGTON...MOVING NORTHEAST AT 35 MPH. QUARTER SIZED HAIL
AND WINDS IN EXCESS OF 58 MPH ARE LIKELY WITH THIS STORM.
THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 37 AND 219.
THIS INCLUDES INTERSTATE 85 BETWEEN EXITS 102 AND 131.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
LARGE HAIL WILL DAMAGE VEHICLES...WINDOWS AND SOME ROOFS. SEVERE
WINDS WILL BLOW DOWN TREES...POWER LINES...AND CAN DAMAGE MOBILE
HOMES AND OTHER BUILDINGS. SEEK SHELTER IN A STURDY STRUCTURE UNTIL
THE STORM HAS PASSED. STAY AWAY FROM WINDOWS.
PLEASE REPORT SEVERE WEATHER REPORTS TO YOUR LOCAL LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 3625 7953 3589 7954 3582 8005 3583 8013
3606 8010 3626 8004
TIME...MOT...LOC 0059Z 233DEG 29KT 3597 8019
$$
SEC3 follow-up statements
366 WWUS52 KRAH 190127 SVSRAH SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH NC 927 PM EDT THU OCT 18 2012 NCC057-067-151-190136- /O.CAN.KRAH.SV.W.0366.000000T0000Z-121019T0215Z/ DAVIDSON NC-FORSYTH NC-RANDOLPH NC- 927 PM EDT THU OCT 18 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN RANDOLPH...EASTERN FORSYTH AND NORTHEASTERN DAVIDSON COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA AND THE WARNING IS NO LONGER IN EFFECT. IF YOU OBSERVED SEVERE WEATHER INCLUDING DAMAGING WINDS OR LARGE HAIL...PLEASE REPORT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. IN RALEIGH. LAT...LON 3625 7954 3590 7954 3592 8004 3626 8003 TIME...MOT...LOC 0126Z 227DEG 30KT 3610 7989 $$ NCC081-190215- /O.CON.KRAH.SV.W.0366.000000T0000Z-121019T0215Z/ GUILFORD NC- 927 PM EDT THU OCT 18 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR GUILFORD COUNTY... AT 923 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR GREENSBORO...MOVING NORTHEAST AT 35 MPH. DOWNED TREES WERE REPORTED WITH THIS STORM. HAZARDS IN THE WARNING INCLUDE... QUARTER SIZED HAIL. DAMAGING WINDS IN EXCESS OF 58 MPH. THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 37 AND 219. THIS INCLUDES INTERSTATE 85 BETWEEN EXITS 113 AND 131. STRAIGHT LINE WINDS CAN BLOW DOWN TREES...POWER LINES...AND DAMAGE MOBILE HOMES AND OTHER BUILDINGS. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED. STAY AWAY FROM WINDOWS AS FLYING DEBRIS GENERATED BY DAMAGING WINDS CAN BE DEADLY. LAT...LON 3625 7954 3590 7954 3592 8004 3626 8003 TIME...MOT...LOC 0126Z 227DEG 30KT 3610 7989 $$ SEC
126 WWUS52 KRAH 190144 SVSRAH SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH NC 944 PM EDT THU OCT 18 2012 NCC081-190215- /O.CON.KRAH.SV.W.0366.000000T0000Z-121019T0215Z/ GUILFORD NC- 944 PM EDT THU OCT 18 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR EASTERN GUILFORD COUNTY... AT 942 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR LAKE TOWNSEND...OR 9 MILES NORTHEAST OF GREENSBORO...MOVING NORTHEAST AT 40 MPH. HAZARDS IN THE WARNING INCLUDE... QUARTER SIZED HAIL. DAMAGING WINDS IN EXCESS OF 58 MPH. THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 37 AND 219. THIS INCLUDES INTERSTATE 85 BETWEEN EXITS 118 AND 131. STRAIGHT LINE WINDS CAN BLOW DOWN TREES...POWER LINES...AND DAMAGE MOBILE HOMES AND OTHER BUILDINGS. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED. STAY AWAY FROM WINDOWS AS FLYING DEBRIS GENERATED BY DAMAGING WINDS CAN BE DEADLY. LAT...LON 3598 7991 3626 7990 3625 7954 3598 7954 TIME...MOT...LOC 0144Z 223DEG 36KT 3621 7974 $$ SEC
153 WWUS52 KRAH 190202 SVSRAH SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE RALEIGH NC 1002 PM EDT THU OCT 18 2012 NCC081-190212- /O.CAN.KRAH.SV.W.0366.000000T0000Z-121019T0215Z/ GUILFORD NC- 1002 PM EDT THU OCT 18 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GUILFORD COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND THE WARNING IS NO LONGER IN EFFECT. IF YOU OBSERVED SEVERE WEATHER INCLUDING DAMAGING WINDS OR LARGE HAIL...PLEASE REPORT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. IN RALEIGH. LAT...LON 3598 7991 3626 7990 3625 7954 3598 7954 TIME...MOT...LOC 0202Z 223DEG 36KT 3634 7958 $$ SEC
The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 8:19 PM EDT | Special Weather Statement | RAH | Forsyth | 56 min |
| Oct 18, 8:30 PM EDT | Severe Thunderstorm Warning | RAH | Davidson, Forsyth | 45 min |
| Oct 19, 2:17 AM EDT | Special Weather Statement | RAH | Alamance, Anson, Chatham, Montgomery, Moore, Randolph and 2 more | 88 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.