Alert archive / North Carolina / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 13, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Mar 23, 2011, 7:31 PM EDT for 6 counties in North Carolina. It was in force for 59 min. 3 reports 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
- Mar 23, 2011, 7:31 PM EDT (23:31 UTC)
- Expired
- Mar 23, 2011, 8:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
Counties Durham County, NC, Franklin County, NC, Granville County, NC, Orange County, NC, Vance County, NC, Wake County, NC
The radar
The Raleigh/Durham radar (KRAX), 44 km from the middle of the area, began a volume at 23:32 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 |
|---|---|---|---|
| Mar 23, 7:45 PM EDT | TSTM WND DMG | 3 E Oxford, NC | 2 TREES DOWN ACROSS TABBS CREEK ROAD NEAR 158 AND 85. |
| Mar 23, 8:07 PM EDT | TSTM WND DMG | 2 Nne Wake Forest, NC | TREE DOWN ON A HOUSE AND A CAR ON HARRIS POINT WAY. |
| Mar 23, 8:13 PM EDT | TSTM WND DMG | 3 Ne Louisburg, NC | TREE DOWN PARTIALLY BLOCKING THE ROAD AT THE 1100 BLOCK OF HWY 561 |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 23, 6:04 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.5 hours before the alert went out and 109 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
- 1642 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
997
WUUS52 KRAH 232331
SVRRAH
NCC063-069-077-135-181-183-240030-
/O.NEW.KRAH.SV.W.0013.110323T2331Z-110324T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
731 PM EDT WED MAR 23 2011
THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WAKE COUNTY IN CENTRAL NORTH CAROLINA
DURHAM COUNTY IN CENTRAL NORTH CAROLINA
CENTRAL ORANGE COUNTY IN CENTRAL NORTH CAROLINA
FRANKLIN COUNTY IN CENTRAL NORTH CAROLINA
SOUTHERN VANCE COUNTY IN CENTRAL NORTH CAROLINA
SOUTHERN GRANVILLE COUNTY IN CENTRAL NORTH CAROLINA
* UNTIL 830 PM EDT
* AT 728 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM BEREA TO BAHAMA TO
HILLSBOROUGH...OR ALONG A LINE EXTENDING FROM OXFORD TO 11 MILES
WEST OF CREEDMOOR TO HILLSBOROUGH...MOVING SOUTHEAST AT 45 MPH.
WINDS IN EXCESS OF 58 MPH ARE LIKELY WITH THIS STORM.
* LOCATIONS IMPACTED INCLUDE...
CHAPEL HILL...GORMAN...
KITTRELL...DURHAM...
PARKWOOD...BETHESDA...
CARPENTER...RESEARCH TRIANGLE PARK...
INGLESIDE...YOUNGSVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING...1...8 7 7...6 3 3...6 7 7 2 OR NOTIFY YOUR LOCAL LAW
ENFORCEMENT AGENCY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
THURSDAY MORNING FOR CENTRAL NORTH CAROLINA.
&&
LAT...LON 3611 7807 3582 7825 3572 7843 3563 7871
3580 7889 3586 7890 3587 7898 3608 7923
3618 7894 3623 7888 3623 7881 3629 7881
3643 7862
TIME...MOT...LOC 2331Z 306DEG 38KT 3630 7863 3612 7885
3605 7906
$$
MWS3 follow-up statements
444
WWUS52 KRAH 232345
SVSRAH
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
745 PM EDT WED MAR 23 2011
NCC063-069-077-135-181-183-240030-
/O.CON.KRAH.SV.W.0013.000000T0000Z-110324T0030Z/
WAKE NC-DURHAM NC-ORANGE NC-FRANKLIN NC-VANCE NC-GRANVILLE NC-
745 PM EDT WED MAR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTHERN GRANVILLE...SOUTHERN VANCE...FRANKLIN...SOUTHERN
ORANGE...DURHAM AND WAKE COUNTIES...
AT 743 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM OXFORD TO CREEDMOOR TO 6 MILES NORTH OF
DURHAM...MOVING SOUTHEAST AT 45 MPH.
HAZARDS IN THE WARNING INCLUDE...
DAMAGING WINDS IN EXCESS OF 58 MPH.
LOCATIONS IN THE PATH OF THE STORM INCLUDE... GORMAN...SOUTH
HENDERSON...KITTRELL...PARKWOOD...BETHESDA...GILLBURG...CARPENTER...
RESEARCH TRIANGLE PARK...FRANKLINTON...MORRISVILLE...PURNELL...RDU
INTERNATIONAL AIRPORT...INGLESIDE...YOUNGSVILLE...CARY...WAKE
FOREST...LOUISBURG...FALLS LAKE...NEW HOPE...AND KNIGHTDALE.
WIND DAMAGE WITH THIS STORM MAY OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS.
WHEN IT IS SAFE TO DO SO...PLEASE CALL IN YOUR REPORTS OF PENNY OR
LARGER SIZED HAIL...AS WELL AS WIND DAMAGE...INCLUDING TREES OR LARGE
LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...
1...8 7 7...6 3 3...6 7 7 2.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
THURSDAY MORNING FOR CENTRAL NORTH CAROLINA.
LAT...LON 3641 7858 3611 7807 3581 7827 3572 7842
3563 7870 3580 7888 3586 7889 3587 7898
3608 7922 3616 7892
TIME...MOT...LOC 2343Z 301DEG 37KT 3631 7848 3612 7870
3606 7891
$$
MWS335
WWUS52 KRAH 240004
SVSRAH
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
804 PM EDT WED MAR 23 2011
NCC135-240013-
/O.CAN.KRAH.SV.W.0013.000000T0000Z-110324T0030Z/
ORANGE NC-
804 PM EDT WED MAR 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ORANGE COUNTY 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...PLEASE
CONTACT THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE 1...8 7
7...6 3 3...6 7 7 2...OR NOTIFY YOUR NEAREST LAW ENFORCEMENT AGENCY
AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN RALEIGH.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
THURSDAY MORNING FOR CENTRAL NORTH CAROLINA.
LAT...LON 3632 7839 3611 7807 3581 7827 3572 7842
3563 7870 3580 7888 3586 7889 3587 7898
3590 7901 3600 7899 3610 7865
TIME...MOT...LOC 0003Z 301DEG 37KT 3620 7826 3601 7848
3595 7869
$$
NCC063-069-077-181-183-240030-
/O.CON.KRAH.SV.W.0013.000000T0000Z-110324T0030Z/
WAKE NC-DURHAM NC-FRANKLIN NC-VANCE NC-GRANVILLE NC-
804 PM EDT WED MAR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR SOUTHEASTERN GRANVILLE...SOUTHERN VANCE...FRANKLIN...SOUTHERN
DURHAM AND WAKE COUNTIES...
AT 800 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM INGLESIDE TO YOUNGSVILLE TO 7 MILES
SOUTHEAST OF GORMAN...OR ALONG A LINE EXTENDING FROM 8 MILES NORTH OF
LOUISBURG TO 12 MILES SOUTHEAST OF CREEDMOOR TO 11 MILES EAST OF
DURHAM...MOVING SOUTHEAST AT 45 MPH.
HAZARDS IN THE WARNING INCLUDE...
DAMAGING WINDS IN EXCESS OF 58 MPH.
LOCATIONS IN THE PATH OF THE STORM INCLUDE... WAKE FOREST...
LOUISBURG...FALLS LAKE...LAKE WHEELER...RALEIGH...ROLESVILLE...NEW
HOPE...GARNER...BUNN...KNIGHTDALE...PILOT AND WENDELL.
WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
WHEN IT IS SAFE TO DO SO...PLEASE CALL IN YOUR REPORTS OF WIND
DAMAGE...INCLUDING TREES OR LARGE LIMBS DOWNED BY CALLING THE
NATIONAL WEATHER SERVICE TOLL FREE AT...1...8 7 7...6 3 3...6 7 7 2.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
THURSDAY MORNING FOR CENTRAL NORTH CAROLINA.
LAT...LON 3632 7839 3611 7807 3581 7827 3572 7842
3563 7870 3580 7888 3586 7889 3587 7898
3590 7901 3600 7899 3610 7865
TIME...MOT...LOC 0003Z 301DEG 37KT 3620 7826 3601 7848
3595 7869
$$
MWS294
WWUS52 KRAH 240022
SVSRAH
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
822 PM EDT WED MAR 23 2011
NCC063-069-077-181-183-240032-
/O.EXP.KRAH.SV.W.0013.000000T0000Z-110324T0030Z/
WAKE NC-DURHAM NC-FRANKLIN NC-VANCE NC-GRANVILLE NC-
822 PM EDT WED MAR 23 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRANVILLE...
SOUTHERN VANCE...FRANKLIN...SOUTHERN DURHAM AND WAKE COUNTIES EXPIRES
AT 830 PM EDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND THE WARNING
WILL BE ALLOWED TO EXPIRE.
IF YOU OBSERVED SEVERE WEATHER INCLUDING DAMAGING WINDS...PLEASE
CONTACT THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE 1...8 7
7...6 3 3...6 7 7 2...OR NOTIFY YOUR NEAREST LAW ENFORCEMENT AGENCY
AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
FORECAST OFFICE IN RALEIGH.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
THURSDAY MORNING FOR CENTRAL NORTH CAROLINA.
LAT...LON 3632 7839 3611 7807 3581 7827 3572 7842
3563 7870 3580 7888 3586 7889 3587 7898
3590 7901 3600 7899 3610 7865
TIME...MOT...LOC 0022Z 295DEG 37KT 3615 7803 3596 7825
3590 7846
$$
MWSThe office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 4:04 AM EDT | Red Flag Warning | RAH | Alamance, Anson, Chatham, Cumberland, Davidson, Durham and 25 more | 16 hr |
| Mar 23, 5:59 PM EDT | Special Weather Statement | RAH | Alamance, Davidson, Forsyth, Guilford, Orange, Person and 1 more | 61 min |
| Mar 23, 6:51 PM EDT | Severe Thunderstorm Warning | RAH | Alamance, Durham, Guilford, Orange, Person | 39 min |
| Mar 23, 7:08 PM EDT | Special Weather Statement | RAH | Forsyth, Guilford | 52 min |
| Mar 23, 7:19 PM EDT | Special Weather Statement | RAH | Franklin, Granville, Vance, Warren | 56 min |
| Mar 23, 7:54 PM EDT | Special Weather Statement | RAH | Davidson, Forsyth, Guilford | 51 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2011Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.