Alert archive / North Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Blacksburg, VA

March 27, 2017Alleghany County, Ashe County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Mar 27, 2017, 5:19 PM EDT for Alleghany County, Ashe County, Wilkes County, North Carolina. It was in force for 41 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: Mar 27, 2017, 5:19 PM EDT (21:19 UTC)
Expired: Mar 27, 2017, 6:00 PM EDT
In force: 41 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Alleghany County, NC, Ashe County, NC, Wilkes County, NC

The radar

The Roanoke radar (KFCX), 129 km from the middle of the area, began a volume at 21:21 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 nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.3 hours before the alert went out and 135 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: 15 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 661 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

379 
WUUS51 KRNK 272119
SVRRNK
NCC005-009-193-272200-
/O.NEW.KRNK.SV.W.0013.170327T2119Z-170327T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
519 PM EDT MON MAR 27 2017

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Southwestern Alleghany County in northwestern North Carolina...
  Northwestern Wilkes County in northwestern North Carolina...
  Southeastern Ashe County in northwestern North Carolina...

* Until 600 PM EDT

* At 519 PM EDT, a severe thunderstorm was located over Summit,
  moving northeast at 25 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees. 

* Locations impacted include...
  Laurel Springs...
  Glendale Springs...
  Wilbar...
  Mc Grady...
  and Cascade Falls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

&&

LAT...LON 3622 8147 3624 8148 3625 8149 3649 8130
      3638 8108 3617 8140
TIME...MOT...LOC 2119Z 221DEG 20KT 3625 8141 

HAIL...1.50IN
WIND...60MPH
 
$$

DS

2 follow-up statements

519 
WWUS51 KRNK 272131
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
531 PM EDT MON MAR 27 2017

NCC005-009-193-272200-
/O.CON.KRNK.SV.W.0013.000000T0000Z-170327T2200Z/
Alleghany NC-Wilkes NC-Ashe NC-
531 PM EDT MON MAR 27 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR
SOUTHWESTERN ALLEGHANY...NORTHWESTERN WILKES AND SOUTHEASTERN ASHE
COUNTIES IN NORTHWESTERN NORTH CAROLINA...

At 531 PM EDT, a severe thunderstorm was located over Wilbar, moving
northeast at 25 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Laurel Springs...
Glendale Springs...
Wilbar...
Mc Grady...
and Abshers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for LARGE HAIL AND DAMAGING WINDS. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

&&

LAT...LON 3649 8130 3638 8108 3622 8132 3629 8146
TIME...MOT...LOC 2131Z 225DEG 21KT 3630 8135 

HAIL...1.25IN
WIND...60MPH
 
$$

DS

928 
WWUS51 KRNK 272159
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
559 PM EDT MON MAR 27 2017

NCC005-009-193-272208-
/O.EXP.KRNK.SV.W.0013.000000T0000Z-170327T2200Z/
Alleghany NC-Wilkes NC-Ashe NC-
559 PM EDT MON MAR 27 2017

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTHWESTERN ALLEGHANY...NORTHWESTERN WILKES AND SOUTHEASTERN ASHE
COUNTIES IN NORTHWESTERN NORTH CAROLINA WILL EXPIRE AT 600 PM EDT...
                
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 will be allowed to expire.  However small hail
and heavy rain are still possible with this thunderstorm.

When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.

LAT...LON 3649 8130 3638 8108 3622 8132 3629 8146
TIME...MOT...LOC 2158Z 237DEG 27KT 3638 8114 

$$

DS

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 27, 4:51 PM EDT	Special Weather Statement	RNK	Surry	24 min
Mar 27, 4:54 PM EDT	Special Weather Statement	RNK	Watauga	66 min
Mar 27, 5:35 PM EDT	Special Weather Statement	RNK	Surry	25 min
Mar 27, 5:43 PM EDT	Special Weather Statement	RNK	Alleghany	32 min
Mar 27, 5:48 PM EDT	Areal Flood Advisory	RNK	Alleghany, Wilkes	4 hr
Mar 27, 6:01 PM EDT	Special Weather Statement	RNK	Wilkes	29 min
Mar 27, 6:31 PM EDT	Special Weather Statement	RNK	Surry	29 min
Mar 27, 6:35 PM EDT	Severe Thunderstorm Warning	RNK	Surry	40 min
Mar 27, 6:37 PM EDT	Special Weather Statement	RNK	Wilkes	23 min
Mar 27, 7:09 PM EDT	Severe Thunderstorm Warning	RNK	Stokes, Surry	51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.