Alert archive / North Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 97, NWS Raleigh, NC

May 23, 2012Johnston County, Wake County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at May 23, 2012, 3:29 PM EDT for Johnston County, Wake County, North Carolina. It was in force for 46 min. 9 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: May 23, 2012, 3:29 PM EDT (19:29 UTC)
Expired: May 23, 2012, 4:15 PM EDT
In force: 46 min
Issued by: NWS Raleigh, NC
Area: Storm-based polygon

Counties Johnston County, NC, Wake County, NC

The radar

The Raleigh/Durham radar (KRAX), 13 km from the middle of the area, began a volume at 19:30 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
May 23, 3:38 PM EDT	HAIL 0.75	2 Nnw Coats Crossroads, NC	PENNY SIZE HAIL
May 23, 3:40 PM EDT	HAIL 1	2 Nnw Coats Crossroads, NC	QUARTER SIZE HAIL NEAR I40 AT EXIT 319
May 23, 3:50 PM EDT	HAIL 1.75	3 W Clayton, NC	1.75 INCH HAIL REPORTED IN JOHNSTON COUNTY DENTING VEHICLES
May 23, 3:50 PM EDT	HAIL 1.75	5 W Clayton, NC	LASTED 5-7 MINUTES... HAIL COVERED DECK.
May 23, 3:58 PM EDT	HAIL 1.75	3 Wnw Clayton, NC	TOWER ROAD AT GUY ROAD
May 23, 4:00 PM EDT	HAIL 1.25	4 Nw Clayton, NC	SOME HAIL APPROACHING GOLF BALL SIZE
May 23, 4:02 PM EDT	HAIL 1.25	3 E Garner, NC	BUSINESS 70 AT JOG ROAD
May 23, 4:05 PM EDT	HAIL 1	3 Nnw Clayton, NC	CLEMMONS STATE FOREST
May 23, 4:10 PM EDT	HAIL 1.25	4 E Garner, NC	FELL FROM 400 PM TO 410 PM AT THE INTERSECTION OF US HWY 70 AND RAYNOR RD.

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
May 23, 1:44 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.5 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: 63 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 574 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

421 
WUUS52 KRAH 231929
SVRRAH
NCC101-183-232015-
/O.NEW.KRAH.SV.W.0097.120523T1929Z-120523T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
329 PM EDT WED MAY 23 2012

THE NATIONAL WEATHER SERVICE IN RALEIGH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WAKE COUNTY IN CENTRAL NORTH CAROLINA
  JOHNSTON COUNTY IN CENTRAL NORTH CAROLINA

* UNTIL 415 PM EDT

* AT 325 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER COATS CROSSROADS...OR 13 MILES NORTHEAST
  OF LILLINGTON...MOVING NORTH AT 10 MPH. QUARTER SIZED HAIL AND
  WINDS IN EXCESS OF 58 MPH ARE LIKELY WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  COATS CROSSROADS...

THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 303 AND 325.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL CAPABLE OF BREAKING WINDOWS...
DAMAGING ROOFS AND DENTING VEHICLES. STAY INSIDE AWAY FROM WINDOWS
UNTIL THE STORM HAS PASSED.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL FLOOD LOW LYING
AREAS SUCH AS DITCHES...UNDERPASSES AND OTHER AREAS OF POOR DRAINAGE.
AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. MOTORISTS SHOULD
ALSO REDUCE DRIVING SPEEDS TO AVOID HYDROPLANING.

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 900 PM EDT
WEDNESDAY EVENING FOR CENTRAL NORTH CAROLINA.

&&

LAT...LON 3579 7832 3565 7823 3553 7831 3539 7848
      3543 7861 3545 7862 3547 7865 3549 7866
      3550 7869 3552 7869 3553 7875 3570 7876
TIME...MOT...LOC 1930Z 197DEG 9KT 3549 7859

$$

ELLIS

2 follow-up statements

569 
WWUS52 KRAH 231945
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
345 PM EDT WED MAY 23 2012

NCC101-183-232015-
/O.CON.KRAH.SV.W.0097.000000T0000Z-120523T2015Z/
WAKE NC-JOHNSTON NC-
345 PM EDT WED MAY 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHERN JOHNSTON AND SOUTHERN WAKE COUNTIES...

AT 340 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR COATS
CROSSROADS...OR 13 MILES WEST OF SMITHFIELD...MOVING NORTH AT 10 MPH.

HAZARDS IN THE WARNING INCLUDE...
QUARTER SIZED HAIL.
DAMAGING WINDS IN EXCESS OF 58 MPH.

LOCATIONS IN THE PATH OF THE STORM INCLUDE... LAKE WHEELER...
GARNER...FLOWERS AND CLAYTON.

THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 303 AND 319.

THIS STORM IS PRODUCING LARGE HAIL CAPABLE OF BREAKING WINDOWS...
DAMAGING ROOFS AND DENTING VEHICLES. STAY INSIDE AWAY FROM WINDOWS
UNTIL THE STORM HAS PASSED.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL FLOOD LOW LYING
AREAS SUCH AS DITCHES...UNDERPASSES AND OTHER AREAS OF POOR DRAINAGE.
AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. MOTORISTS SHOULD
ALSO REDUCE DRIVING SPEEDS TO AVOID HYDROPLANING.

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 900 PM EDT
WEDNESDAY EVENING FOR CENTRAL NORTH CAROLINA.

LAT...LON 3565 7823 3553 7831 3541 7856 3543 7861
      3545 7862 3547 7865 3549 7866 3550 7868
      3552 7869 3553 7875 3570 7876 3579 7832
TIME...MOT...LOC 1945Z 197DEG 9KT 3553 7858

$$

ELLIS

023 
WWUS52 KRAH 232000
SVSRAH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
400 PM EDT WED MAY 23 2012

NCC101-183-232015-
/O.CON.KRAH.SV.W.0097.000000T0000Z-120523T2015Z/
WAKE NC-JOHNSTON NC-
400 PM EDT WED MAY 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN JOHNSTON AND SOUTHERN WAKE COUNTIES...

AT 358 PM EDT...THE PUBLIC REPORTED A SEVERE THUNDERSTORM.  THIS
STORM WAS LOCATED NEAR COATS CROSSROADS...OR 13 MILES WEST OF
SMITHFIELD...MOVING NORTH AT 10 MPH.

HAZARDS IN THE WARNING INCLUDE...
QUARTER SIZED HAIL.

LOCATIONS IN THE PATH OF THE STORM INCLUDE... LAKE WHEELER...
GARNER...FLOWERS AND CLAYTON.

THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 303 AND 319.

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.

THIS STORM IS PRODUCING LARGE HAIL CAPABLE OF BREAKING WINDOWS...
DAMAGING ROOFS AND DENTING VEHICLES. STAY INSIDE AWAY FROM WINDOWS
UNTIL THE STORM HAS PASSED.

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 900 PM EDT
WEDNESDAY EVENING FOR CENTRAL NORTH CAROLINA.

LAT...LON 3564 7833 3557 7835 3546 7853 3543 7861
      3545 7862 3547 7865 3549 7866 3550 7868
      3552 7869 3553 7875 3570 7876 3579 7832
TIME...MOT...LOC 2000Z 197DEG 9KT 3557 7857

$$

ELLIS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 8:16 PM EDT	Special Weather Statement	RAH	Davidson, Forsyth	89 min
May 22, 8:20 PM EDT	Special Weather Statement	RAH	Randolph	55 min
May 22, 8:42 PM EDT	Severe Thunderstorm Warning	RAH	Forsyth	33 min
May 22, 8:45 PM EDT	Severe Thunderstorm Warning	RAH	Randolph	45 min
May 22, 8:48 PM EDT	Special Weather Statement	RAH	Anson	57 min
May 22, 9:18 PM EDT	Areal Flood Advisory	RAH	Forsyth	2 hr
May 22, 9:37 PM EDT	Special Weather Statement	RAH	Forsyth, Guilford	68 min
May 22, 9:45 PM EDT	Flash Flood Warning	RAH	Forsyth	3 hr
May 22, 10:24 PM EDT	Special Weather Statement	RAH	Anson	66 min
May 22, 10:46 PM EDT	Special Weather Statement	RAH	Alamance	59 min
May 22, 11:07 PM EDT	Special Weather Statement	RAH	Stanly	53 min
May 22, 11:34 PM EDT	Special Weather Statement	RAH	Randolph	41 min
May 22, 11:37 PM EDT	Special Weather Statement	RAH	Scotland	53 min
May 23, 12:16 AM EDT	Areal Flood Advisory	RAH	Montgomery, Moore, Randolph	59 min
May 23, 12:23 AM EDT	Special Weather Statement	RAH	Moore	67 min
May 23, 1:10 AM EDT	Special Weather Statement	RAH	Lee	65 min
May 23, 2:08 AM EDT	Special Weather Statement	RAH	Durham, Orange	52 min
May 23, 3:00 AM EDT	Special Weather Statement	RAH	Durham, Granville, Orange, Person	60 min
May 23, 1:31 PM EDT	Special Weather Statement	RAH	Sampson	59 min
May 23, 2:00 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Sampson, Wayne	45 min
May 23, 2:33 PM EDT	Severe Thunderstorm Warning	RAH	Cumberland, Harnett, Hoke, Moore	57 min
May 23, 2:44 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Sampson, Wayne	46 min
May 23, 3:32 PM EDT	Severe Thunderstorm Warning	RAH	Harnett, Hoke, Lee, Moore	43 min
May 23, 3:57 PM EDT	Severe Thunderstorm Warning	RAH	Moore	63 min
May 23, 4:07 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wake	38 min
May 23, 4:21 PM EDT	Severe Thunderstorm Warning	RAH	Chatham, Harnett, Wake	54 min
May 23, 4:44 PM EDT	Severe Thunderstorm Warning	RAH	Franklin, Granville, Wake	41 min
May 23, 5:23 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Franklin, Granville, Vance, Wake	38 min
May 23, 5:40 PM EDT	Special Weather Statement	RAH	Cumberland	65 min
May 23, 5:44 PM EDT	Special Weather Statement	RAH	Chatham	61 min
May 23, 5:51 PM EDT	Special Weather Statement	RAH	Halifax	54 min
May 23, 5:53 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Halifax	67 min
May 23, 6:03 PM EDT	Special Weather Statement	RAH	Vance	57 min
May 23, 6:41 PM EDT	Special Weather Statement	RAH	Orange	64 min
May 23, 6:54 PM EDT	Special Weather Statement	RAH	Edgecombe	51 min
May 23, 6:59 PM EDT	Special Weather Statement	RAH	Halifax	61 min
May 23, 7:37 PM EDT	Severe Thunderstorm Warning	RAH	Edgecombe, Halifax	31 min
May 23, 7:40 PM EDT	Special Weather Statement	RAH	Edgecombe	65 min
May 23, 7:54 PM EDT	Special Weather Statement	RAH	Wayne	36 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2012 Every 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.