Alert archive / North Carolina / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 2, NWS Raleigh, NC

April 1, 2001Chatham County, North Carolina

NWS Raleigh, NC issued this severe thunderstorm warning at Apr 1, 2001, 11:30 AM EDT for Chatham County, North Carolina. It was in force for 45 min. 2 reports 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 1, 2001, 11:30 AM EDT (15:30 UTC)
Expired
Apr 1, 2001, 12:15 PM EDT
In force
45 min
Issued by
NWS Raleigh, NC
Area
Whole counties

County Chatham County, NC

What was reported inside it

TimeReportWhereRemark
Apr 1, 11:55 AM EDTHail 0.75Pittsboro, NC
Apr 1, 12:22 PM EDTHail 0.75Pittsboro, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 1, 11:15 AM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 3.5 hours before the alert went out and 72 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 2001-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 71 joules per kilogram.LCLLFCEL10008507005003002001001 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 2001-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
71 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
577 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
98 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.

428 
WUUS52 KRAH 011535
SVRRDU
NCC037-011615-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE RALEIGH NC
1130 AM EDT SUN APR 1 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHATHAM COUNTY IN NORTH CAROLINA

* UNTIL 1215 PM EDT

* AT 1130 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES WEST OF PITTSBORO...MOVING EAST AT    
  20 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  PITTSBORO...BYNUM AND JORDAN LAKE

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 12:01 PM EDTSevere Thunderstorm WarningRAHWake59 min
Apr 1, 12:13 PM EDTSevere Thunderstorm WarningRAHChatham47 min
Apr 1, 12:19 PM EDTSevere Thunderstorm WarningRAHDavidson26 min
Apr 1, 12:22 PM EDTSevere Thunderstorm WarningRAHMontgomery, Moore, Richmond38 min
Apr 1, 12:39 PM EDTSevere Thunderstorm WarningRAHGuilford, Randolph66 min
Apr 1, 12:48 PM EDTSevere Thunderstorm WarningRAHHarnett, Wake57 min
Apr 1, 12:52 PM EDTSevere Thunderstorm WarningRAHAnson53 min
Apr 1, 12:52 PM EDTSevere Thunderstorm WarningRAHMontgomery, Moore, Richmond53 min
Apr 1, 12:57 PM EDTSevere Thunderstorm WarningRAHJohnston63 min
Apr 1, 1:04 PM EDTSevere Thunderstorm WarningRAHChatham, Lee56 min
Apr 1, 1:25 PM EDTSevere Thunderstorm WarningRAHHoke, Scotland80 min
Apr 1, 1:37 PM EDTSevere Thunderstorm WarningRAHAlamance, Orange53 min
Apr 1, 1:42 PM EDTSevere Thunderstorm WarningRAHHarnett, Johnston, Wake48 min
Apr 1, 2:07 PM EDTSevere Thunderstorm WarningRAHCumberland53 min
Apr 1, 2:22 PM EDTSevere Thunderstorm WarningRAHHarnett, Johnston, Sampson68 min
Apr 1, 2:53 PM EDTSevere Thunderstorm WarningRAHWayne, Wilson67 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2001Every severe thunderstorm warning in 2001

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.