Alert archive / North Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 126, NWS Wilmington, NC

July 21, 2000New Hanover County, North Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Jul 21, 2000, 5:52 PM EDT for New Hanover County, North Carolina. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 21, 2000, 5:52 PM EDT (21:52 UTC)
Expired: Jul 21, 2000, 6:15 PM EDT
In force: 23 min
Issued by: NWS Wilmington, NC
Area: Whole counties

County New Hanover County, NC

The radar

The Wilmington radar (KLTX), 56 km from the middle of the area, began a volume at 21:54 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

Newport, NC (KMHX), launched 12:00Z, 9.9 hours before the alert went out and 112 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: 1030 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -42 m²/s²
0-3 km storm-relative helicity: 107 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.

385 
WUUS52 KILM 212152
SVRILM
NCC129-212215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
552 PM EDT FRI JUL 21 2000

THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NEW HANOVER COUNTY IN SOUTHEAST NORTH CAROLINA

* UNTIL 615 PM EDT

* AT 549 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH DAMAGING WINDS OVER SILVER LAKE...OR ABOUT
  4 MILES SOUTHWEST OF SILVER LAKE...MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   SMITH CREEK AT 605 PM EDT
   OGDEN AT 610 PM EDT
   BAYSHORE AT 615 PM EDT

DAMAGING WINDS IN EXCESS OF 58 MPH ARE EXPECTED FROM THIS STORM. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN WILMINGTON NC.

$$

.END

What forecasters said that day

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

NWS Wilmington, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 2:40 PM EDT, 3 hours 12 minutes earlier.

Area forecast discussion, Jul 21, 2:40 PM EDT, 3 hours 12 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON NC
240 PM EDT FRI JUL 21 2000

WATER VAPOR IMAGERY SHOWS S/WV TROF PUSHING ACROSS THE CAROLINAS
ATTM. RW/TRW ON 88D MOSAIC MAINLY CONFINED TO NRN CWFA MOVING NE.
BEST LIFT & MOISTURE CONV WILL MOVE OFF THE CST THRU THE AFTN W/ NVA
SETTLING IN BEHIND THE S/WV. DEPENDING ON COVERAGE AT PRESS TIME...
MAY GO W/ A REMAINDER OF AFTN PERIOD FOR NRN OR NERN MOST COUNTIES.
SHOULD SEE A LULL FOR THE REST OF THE NGT EXCEPT FOR POSSIBLY SOME
ISOLATED ACTIVITY W/ SFC LO STILL IN THE VC. OTHERWISE SOME CLEARER
SKIES TRYING TO SPIN UP FROM THE SW.

DESPITE AN AMPLIFICATION IN THE UPR PATN FROM WNWRLY FLOW TO MORE
TROFFINESS... THINGS WILL REMAIN STATUS QUO THRU THE WEEKEND AS
S/WVS ARE PROGGED TO PUSH ACROSS THE AREA. MODELS TIMING NEARLY
SIMILAR W/ WAVES PASSING SAT AFTN & AGAIN LATE SUN AFTN. MODELS
DIFFER IN STRENGTH THOUGH W/ ETA/NGM SHOWING MORE OMEGA THAN AVN.
AVN ALSO FARTHER S. SOME INFLUENCE WILL BE EXERTED AS WELL BY RRQ OF
UPR JET WHICH MOVES IN THRU TMRW. MODELS AGREE ON BRINGING SFC FNT
TO THE PIEDMONT BY SAT AFTN BUT DIFFER FROM THERE. ETA KEEPS IT OVER
THE PIEDMONT INTO MON WHILE NGM BRINGS THE FNT TO THE CSTL WATERS
LATE SAT. AVN BRINGS IT TO THE CST THEN STALLS IT & WILL LEAN THIS
WAY. DECENT SFC MOIST CONV DURING THE AFTNS. ETA BUFKIT DATA SHOWS
MOD INSTABILITY & HIGH CAPES BOTH AFTNS (ALTHOUGH BETTER INLAND ON
SUN) BUT THIS IS PREDICATED ON KEEPING THE FNT TO OUR W. SHOULD BE
UNSTABLE ENOUGH TO HELP PRODUCE TRW.

MOS POPS ARE GENERALLY 30-50 THRU THE WEEKEND...WILL LIKELY GO 40
BOTH DAYS. WILL MAINTAIN SLGT POPS FOR SAT EVE W/ LEFTOVER INSTABILITY &
SFC BOUNDARIES. MOS TEMPS FINE TNGT BUT WILL UNDERCUT SLIGHTLY FOR
EXPECTED CLDS/PRECIP SAT.

CWF: GREAT DIVERGENCE IN THE MODELS HURTS HERE. AS THE LO MOVES NE
THIS EVE WINDS SHOULD SHIFT TO S/SW. GRAD WILL RELAX AS THE LO
WEAKENS THEN 2RY LO DEVELOPS TO OUR SW. SRN WATERS LOOK OKAY TO GO
SE SAT THEN SW SAT NGT/SUN W/ FNT ON DOORSTEP. NRN WATERS BETWEEN
LOWS & NOT SO CUT/DRY. LEANING TOWARD VRB TNGT THEN GOING SW AS WELL
BEGINNING LATE SAT.

PRELIM CCF:
ILM EE 072/086 072/085 072 242
FLO EE 071/088 070/087 070 142
MYR EE 073/086 072/084 072 142

.ILM...NONE.

LGE

In the hours before

Local storm report, Jul 21, 4:13 PM EDT, 1 hour 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, NC
413 PM EDT FRI JUL 21 2000

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0408 PM    2 S SOCASTEE              SC   WIND DAMAGE
07/21/00   HORRY                          TRAINED SPOTTER REPORTED
                                          TREE BLOWN DOWN

Local storm report, Jul 21, 5:29 PM EDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, NC
529 PM EDT FRI JUL 21 2000

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0457 PM    SHALLOTTE                 NC   WIND DAMAGE
07/21/00   BRUNSWICK                      LAW ENFORCEMENT REPORTED
                                          BILLBOARD BLOWN DOWN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 4:43 PM EDT	Severe Thunderstorm Warning	ILM	Brunswick	47 min
Jul 21, 5:54 PM EDT	Severe Thunderstorm Warning	ILM	New Hanover	36 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2000 Every severe thunderstorm warning in 2000

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.