Alert archive / North Carolina / Tornado Warnings in 1996

Tornado Warning 12, NWS Raleigh, NC

April 20, 1996Forsyth County, North Carolina

NWS Raleigh, NC issued this tornado warning at Apr 20, 1996, 4:03 PM EDT for Forsyth County, North Carolina. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 20, 1996, 4:03 PM EDT (20:03 UTC)
Expired
Apr 20, 1996, 4:30 PM EDT
In force
27 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Forsyth County, NC

The radar

The Roanoke radar (KFCX), 99 km from the middle of the area, began a volume at 20:05 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

TimeReportWhereRemark
Apr 20, 4:05 PM EDTThunderstorm Wind 0Winston-Salem, NC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.1 hours before the alert went out and 32 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 1996-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 1996-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
591 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
86 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.

000 
TTAA00 KRDU 202006
TORRDU
NCC067-202030-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RALEIGH/DURHAM NC
403 PM EDT SAT APR 20 1996
 
THE NATIONAL WEATHER SERVICE IN RALEIGH/DURHAM HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  430 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL NORTH CAROLINA
 
   ...FORSYTH COUNTY
 
THE NATIONAL WEATHER SERVICE HAS RECEIVED A REPORT OF A TORNADO ON THE
GROUND AT 404 PM IN THE VICINITY OF THE 1200 BLOCK OF MARTIN LUTHER KING
BLVD IN SOUTH WINSTON-SALEM. THE STORM IS MOVING TO THE EAST NORTHEAST
AT 40 MILES AN HOUR. RESIDENTS IN THE PATH OF THIS STORM SHOULD TAKE
COVER IMMEDIATELY.
 
PEOPLE NEAR THE PATH OF THIS STORM SHOULD ACT NOW TO PROTECT THEIR
LIVES. GO TO THE LOWEST FLOOR...A SMALL INTERIOR ROOM OR CLOSET.
COVER YOUR HEAD. STAY AWAY FROM WINDOWS. GET OUT OF MOBILE HOMES
AND VEHICLES AND INTO A STURDY BUILDING OR A DITCH.  REPORT DAMAGE
TO EMERGENCY OFFICIALS FOR RELAY TO THE NATIONAL WEATHER SERVICE.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Apr 20, 12:31 PM EDT, 3 hours 32 minutes before
NCZ007>009-021>025-033>041-049>050-053>057-064>076/082>084-201710-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
1230 PM EDT SAT APR 20 1996

NORTH CAROLINA SEVERE THUNDERSTORM OUTLOOK...A FEW SEVERE
THUNDERSTORMS WITH DAMAGING WINDS AND LARGE HAIL ARE POSSIBLE OVER
WESTERN AND CENTRAL NORTH CAROLINA THIS AFTERNOON AND EVENING.

AN UPPER LEVEL DISTURBANCE OVER THE TENNESSEE VALLEY HAS COMBINE WITH
WARM...MOIST AIR AT THE SURFACE TO PRODUCE SCATTERED SHOWERS AND
THUNDERSTORMS OVER THE REGION THIS MORNING.  AS THE UPPER LEVEL
DISTURBANCE CONTINUES MOVING NORTHEAST THIS AFTERNOON AND
EVENING...SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
OVER WESTERN AND CENTRAL NORTH CAROLINA.  A FEW OF THE THUNDERSTORMS
COULD BECOME SEVERE...PRODUCING DAMAGING WINDS AND POSSIBLY LARGE
HAIL.

PERSONS IN WESTERN AND CENTRAL NORTH CAROLINA SHOULD MONITOR WEATHER
CONDITIONS CLOSELY THIS AFTERNOON AND EVENING BY LISTENING TO NOAA
WEATHER RADIO OR LOCAL MEDIA FOR LATER STATEMENTS.

RAN
Special weather statement, Apr 20, 2:35 PM EDT, 1 hour 28 minutes before
NCZ048-051>053-058>063-201845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
234 PM EDT SAT APR 20 1996

...TORNADO WATCH CANCELLED...

TORNADO WATCH NUMBER 199...PREVIOUSLY IN EFFECT FOR THE PORTIONS OF THE
CENTRAL...SOUTHERN AND SOUTHWEST MOUNTAINS OF NORTH CAROLINA HAS BEEN
CANCELLED.

RAN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 5:04 PM EDTSevere Thunderstorm WarningRAHAlamance26 min
Apr 20, 5:34 PM EDTSevere Thunderstorm WarningRAHOrange16 min
Apr 20, 6:30 PM EDTSevere Thunderstorm WarningRAHFranklin20 min

Nearby

Tornado Warnings in North Carolina, 1996Every tornado warning in 1996Tornadoes in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.