Alert archive / North Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 91, NWS Raleigh, NC

June 4, 20174 counties in North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Jun 4, 2017, 5:23 PM EDT for 4 counties in North Carolina. It was in force for 29 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: Jun 4, 2017, 5:23 PM EDT (21:23 UTC)
Expired: Jun 4, 2017, 5:52 PM EDT
In force: 29 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Chatham County, NC, Durham County, NC, Orange County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 48 km from the middle of the area, began a volume at 21:26 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
Jun 4, 5:35 PM EDT	TSTM WND DMG	2 Sse Durham, NC	TREE DOWN.

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, 9.4 hours before the alert went out and 92 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1689 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

185 
WUUS52 KRAH 042123
SVRRAH
NCC037-063-135-183-042215-
/O.NEW.KRAH.SV.W.0091.170604T2123Z-170604T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Raleigh NC
523 PM EDT SUN JUN 4 2017

The National Weather Service in Raleigh has issued a

* Severe Thunderstorm Warning for...
  Southeastern Orange County in central North Carolina...
  Northwestern Wake County in central North Carolina...
  Northeastern Chatham County in central North Carolina...
  Southern Durham County in central North Carolina...

* Until 615 PM EDT

* At 523 PM EDT, a severe thunderstorm was located over Chapel Hill,
  moving east at 30 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Raleigh, Durham, Cary, Chapel Hill, Carrboro, Rdu International,
  Morrisville, William B Umstead State Park, Gorman and Parkwood.

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.

Damaging winds and deadly cloud to ground lightning are occurring 
with this storm. 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 3607 7878 3607 7875 3602 7870 3589 7866
      3586 7866 3583 7870 3580 7904 3581 7910
      3584 7914 3592 7916 3596 7914 3599 7907
      3608 7879
TIME...MOT...LOC 2123Z 258DEG 27KT 3590 7903 

HAIL...<.75IN
WIND...60MPH
 
$$

VINCENT

3 follow-up statements

903 
WWUS52 KRAH 042140
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
540 PM EDT SUN JUN 4 2017

NCC037-063-135-183-042215-
/O.CON.KRAH.SV.W.0091.000000T0000Z-170604T2215Z/
Orange NC-Wake NC-Chatham NC-Durham NC-
540 PM EDT SUN JUN 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHEASTERN ORANGE...NORTHWESTERN WAKE...NORTHEASTERN CHATHAM
AND SOUTHERN DURHAM COUNTIES...

At 540 PM EDT, a severe thunderstorm was located over Durham, moving
east at 25 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Durham, Cary, Chapel Hill, Carrboro, Rdu International, Morrisville, 
William B Umstead State Park, Gorman and Parkwood.

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.

&&

LAT...LON 3607 7878 3607 7875 3602 7870 3589 7866
      3586 7866 3583 7870 3581 7894 3582 7900
      3585 7905 3590 7907 3594 7907 3600 7902
      3608 7879
TIME...MOT...LOC 2140Z 257DEG 21KT 3594 7891 

HAIL...<.75IN
WIND...60MPH
 
$$

VINCENT

205 
WWUS52 KRAH 042146
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
546 PM EDT SUN JUN 4 2017

NCC037-135-042155-
/O.CAN.KRAH.SV.W.0091.000000T0000Z-170604T2215Z/
Orange NC-Chatham NC-
546 PM EDT SUN JUN 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ORANGE AND
NORTHEASTERN CHATHAM COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened and 
moved east if Orange and Chatham counties. Therefore, the warning 
has been cancelled.

LAT...LON 3600 7876 3600 7873 3599 7870 3589 7866
      3586 7866 3585 7868 3583 7873 3583 7881
      3584 7883 3586 7885 3590 7886 3594 7886
      3598 7884 3599 7879
TIME...MOT...LOC 2145Z 246DEG 11KT 3590 7873 

$$

NCC063-183-042215-
/O.CON.KRAH.SV.W.0091.000000T0000Z-170604T2215Z/
Wake NC-Durham NC-
546 PM EDT SUN JUN 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHWESTERN WAKE AND SOUTHEASTERN DURHAM COUNTIES...

At 545 PM EDT, a severe thunderstorm was located near Rdu
International, or 6 miles northwest of Raleigh, moving northeast at
10 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Raleigh, Cary, Rdu International, Morrisville, Research Triangle,
William B Umstead State Park, Bethesda and Falls Lake.

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.

&&

LAT...LON 3600 7876 3600 7873 3599 7870 3589 7866
      3586 7866 3585 7868 3583 7873 3583 7881
      3584 7883 3586 7885 3590 7886 3594 7886
      3598 7884 3599 7879
TIME...MOT...LOC 2145Z 246DEG 11KT 3590 7873 

HAIL...<.75IN
WIND...60MPH
 
$$

VINCENT

733 
WWUS52 KRAH 042152
SVSRAH

Severe Weather Statement
National Weather Service Raleigh NC
552 PM EDT SUN JUN 4 2017

NCC063-183-042202-
/O.CAN.KRAH.SV.W.0091.000000T0000Z-170604T2215Z/
Wake NC-Durham NC-
552 PM EDT SUN JUN 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WAKE AND
SOUTHEASTERN DURHAM COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning has been cancelled.

LAT...LON 3600 7876 3600 7873 3599 7870 3589 7866
      3586 7866 3585 7868 3583 7873 3583 7881
      3584 7883 3586 7885 3590 7886 3594 7886
      3598 7884 3599 7879
TIME...MOT...LOC 2149Z 258DEG 27KT 3591 7867 

$$

VINCENT

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 7:25 AM EDT	Areal Flood Advisory	RAH	Anson, Stanly	3 hr
Jun 4, 2:24 PM EDT	Special Weather Statement	RAH	Montgomery	36 min
Jun 4, 2:30 PM EDT	Special Weather Statement	RAH	Montgomery	45 min
Jun 4, 2:41 PM EDT	Severe Thunderstorm Warning	RAH	Stanly	49 min
Jun 4, 2:49 PM EDT	Severe Thunderstorm Warning	RAH	Montgomery, Richmond	56 min
Jun 4, 3:03 PM EDT	Special Weather Statement	RAH	Stanly	27 min
Jun 4, 3:07 PM EDT	Special Weather Statement	RAH	Orange	38 min
Jun 4, 3:09 PM EDT	Areal Flood Advisory	RAH	Anson, Montgomery, Richmond, Stanly	3 hr
Jun 4, 3:16 PM EDT	Special Weather Statement	RAH	Montgomery	59 min
Jun 4, 3:33 PM EDT	Special Weather Statement	RAH	Davidson, Forsyth, Randolph	57 min
Jun 4, 3:54 PM EDT	Special Weather Statement	RAH	Montgomery, Richmond	66 min
Jun 4, 4:44 PM EDT	Special Weather Statement	RAH	Alamance	46 min
Jun 4, 4:50 PM EDT	Special Weather Statement	RAH	Anson	40 min
Jun 4, 4:53 PM EDT	Special Weather Statement	RAH	Guilford	22 min
Jun 4, 4:57 PM EDT	Special Weather Statement	RAH	Bladen	33 min
Jun 4, 5:05 PM EDT	Special Weather Statement	RAH	Harnett	25 min
Jun 4, 5:10 PM EDT	Special Weather Statement	RAH	Orange	35 min
Jun 4, 5:18 PM EDT	Special Weather Statement	RAH	Wake	42 min
Jun 4, 5:32 PM EDT	Special Weather Statement	RAH	Wake	28 min
Jun 4, 5:36 PM EDT	Areal Flood Advisory	RAH	Anson	3 hr
Jun 4, 5:37 PM EDT	Special Weather Statement	RAH	Anson	38 min
Jun 4, 5:49 PM EDT	Special Weather Statement	RAH	Franklin	41 min
Jun 4, 6:00 PM EDT	Special Weather Statement	RAH	Franklin	45 min
Jun 4, 6:07 PM EDT	Special Weather Statement	RAH	Vance, Warren	53 min
Jun 4, 6:28 PM EDT	Special Weather Statement	RAH	Warren	47 min
Jun 4, 6:36 PM EDT	Special Weather Statement	RAH	Franklin	39 min
Jun 4, 6:40 PM EDT	Special Weather Statement	RAH	Cumberland	50 min
Jun 4, 7:05 PM EDT	Special Weather Statement	RAH	Warren	55 min
Jun 4, 7:32 PM EDT	Special Weather Statement	RAH	Johnston	43 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2017 Every severe thunderstorm warning in 2017

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.