Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 85, NWS Raleigh, NC
NWS Raleigh, NC issued this severe thunderstorm warning at Jul 17, 2021, 5:44 PM EDT for Durham County, Orange County, Person County, North Carolina. It was in force for 44 min. 7 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
- Jul 17, 2021, 5:44 PM EDT (21:44 UTC)
- Expired
- Jul 17, 2021, 6:28 PM EDT
- In force
- 44 min
- Issued by
- NWS Raleigh, NC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Durham County, NC, Orange County, NC, Person County, NC
The radar
The Raleigh/Durham radar (KRAX), 69 km from the middle of the area, began a volume at 21:46 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 17, 5:55 PM EDT | TSTM WND DMG | Hillsborough, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF N HASSEL ST. AND W TRYON ST. TIME ESTIMATED BY RADAR. |
| Jul 17, 5:58 PM EDT | TSTM WND DMG | 1 Wsw Bushy Fork, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF BURLINGTON RD AND SNIPES RD. TIME ESTIMATED BY RADAR. |
| Jul 17, 6:00 PM EDT | TSTM WND DMG | 4 Ne Schley, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF NC HIGHWAY 57 AND GUESS RD. TIME ESTIMATED BY RADAR. |
| Jul 17, 6:02 PM EDT | TSTM WND DMG | 3 Nw Rougemont, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF NED MOORE RD AND WINDY CREEK RD. TIME ESTIMATED BY RADAR. |
| Jul 17, 6:02 PM EDT | TSTM WND DMG | 6 Ese Schley, NC | POWER LINES WERE REPORTED DOWN ACROSS THE ROADWAY NEAR THE INTERSECTION OF TERRY RD AND ST. MARYS RD. TIME ESTIMATED BY RADAR. |
| Jul 17, 6:04 PM EDT | TSTM WND DMG | 4 Nnw Rougemont, NC | A TREE WAS REPORTED DOWN NEAR THE INTERSECTION OF DICK HOLEMAN RD AND FOREST VIEW DR. TIME ESTIMATED BY RADAR. |
| Jul 17, 6:11 PM EDT | TSTM WND DMG | 2 Nnw Surl, NC | A TREE FELL ON POWER LINES ON SURL MOUNT TIRZAH RD. TIME ESTIMATED BY RADAR. |
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 12:00Z, 9.7 hours before the alert went out and 87 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
- 966 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 843 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
854
WUUS52 KRAH 172144
SVRRAH
NCC063-135-145-172245-
/O.NEW.KRAH.SV.W.0085.210717T2144Z-210717T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
544 PM EDT Sat Jul 17 2021
The National Weather Service in Raleigh has issued a
* Severe Thunderstorm Warning for...
Person County in central North Carolina...
Northeastern Orange County in central North Carolina...
Northern Durham County in central North Carolina...
* Until 645 PM EDT.
* At 544 PM EDT, severe thunderstorms were located along a line
extending from near Prospect Hill to near Mebane, moving east at 40
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Durham, Roxboro, Hillsborough, Rougemont, Bushy Fork, Lake Michie,
Moriah, Eno River State Park, Surl and Bahama.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 3609 7881 3609 7879 3607 7878 3604 7877
3604 7910 3624 7919 3624 7915 3642 7914
3644 7880
TIME...MOT...LOC 2144Z 263DEG 35KT 3630 7912 3613 7920
HAIL...1.00IN
WIND...60MPH
$$
73 follow-up statements
565
WWUS52 KRAH 172155
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
555 PM EDT Sat Jul 17 2021
NCC063-135-145-172245-
/O.CON.KRAH.SV.W.0085.000000T0000Z-210717T2245Z/
Person NC-Orange NC-Durham NC-
555 PM EDT Sat Jul 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR PERSON...NORTHEASTERN ORANGE AND NORTHERN DURHAM COUNTIES...
At 554 PM EDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Prospect Hill to 8 miles west of
Rougemont to near Hillsborough, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Durham, Roxboro, Hillsborough, Rougemont, Bushy Fork, Lake Michie,
Moriah, Eno River State Park, Surl and Bahama.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Straight line winds can blow down trees, power lines, and damage
mobile homes and other buildings. Seek shelter in a sturdy structure
until the storm has passed. Stay away from windows as flying debris
generated by damaging winds can be deadly.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3609 7881 3609 7879 3607 7878 3604 7877
3604 7910 3624 7919 3624 7915 3642 7914
3644 7880
TIME...MOT...LOC 2154Z 261DEG 34KT 3631 7912 3624 7907 3611 7910
HAIL...1.00IN
WIND...60MPH
$$
7039
WWUS52 KRAH 172217
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
617 PM EDT Sat Jul 17 2021
NCC063-135-145-172245-
/O.CON.KRAH.SV.W.0085.000000T0000Z-210717T2245Z/
Person NC-Orange NC-Durham NC-
617 PM EDT Sat Jul 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR PERSON...NORTHEASTERN ORANGE AND NORTHERN DURHAM COUNTIES...
At 617 PM EDT, severe thunderstorms were located along a line
extending from near Roxboro to near Rougemont, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Durham, Roxboro, Rougemont, Bushy Fork, Lake Michie, Moriah, Surl,
Bahama, Schley and Eno River State Park.
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.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Raleigh.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3609 7881 3609 7879 3607 7878 3604 7877
3604 7893 3615 7914 3625 7915 3626 7915
3633 7914 3642 7914 3644 7880
TIME...MOT...LOC 2217Z 258DEG 30KT 3635 7890 3628 7887 3615 7895
HAIL...<.75IN
WIND...60MPH
$$
7759
WWUS52 KRAH 172228
SVSRAH
Severe Weather Statement
National Weather Service Raleigh NC
628 PM EDT Sat Jul 17 2021
NCC063-135-145-172238-
/O.CAN.KRAH.SV.W.0085.000000T0000Z-210717T2245Z/
Person NC-Orange NC-Durham NC-
628 PM EDT Sat Jul 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR PERSON...NORTHEASTERN ORANGE
AND NORTHERN DURHAM COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with these thunderstorms.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Raleigh.
LAT...LON 3609 7881 3609 7879 3607 7878 3604 7877
3604 7893 3615 7914 3625 7915 3626 7915
3633 7914 3642 7914 3644 7880
TIME...MOT...LOC 2226Z 263DEG 35KT 3636 7879 3629 7876 3616 7884
$$
7The office that day
Everything else NWS Raleigh, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 3:56 PM EDT | Special Weather Statement | RAH | Forsyth | 64 min |
| Jul 17, 4:24 PM EDT | Special Weather Statement | RAH | Randolph | 36 min |
| Jul 17, 4:35 PM EDT | Special Weather Statement | RAH | Johnston | 40 min |
| Jul 17, 4:41 PM EDT | Special Weather Statement | RAH | Guilford | 34 min |
| Jul 17, 4:43 PM EDT | Severe Thunderstorm Warning | RAH | Guilford | 47 min |
| Jul 17, 5:06 PM EDT | Areal Flood Advisory | RAH | Guilford | 3 hr |
| Jul 17, 5:21 PM EDT | Severe Thunderstorm Warning | RAH | Alamance, Orange | 39 min |
| Jul 17, 5:32 PM EDT | Special Weather Statement | RAH | Davidson, Guilford | 58 min |
| Jul 17, 6:32 PM EDT | Special Weather Statement | RAH | Guilford | 58 min |
| Jul 17, 6:40 PM EDT | Special Weather Statement | RAH | Wayne | 35 min |
| Jul 17, 6:57 PM EDT | Special Weather Statement | RAH | Sampson | 63 min |
| Jul 17, 7:33 PM EDT | Special Weather Statement | RAH | Guilford | 42 min |
| Jul 17, 7:42 PM EDT | Special Weather Statement | RAH | Wayne | 63 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2021Every severe thunderstorm warning in 2021
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.