Alert archive / North Carolina / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 6, NWS Newport/Morehead City, NC

April 18, 2002Beaufort County, North Carolina

NWS Newport/Morehead City, NC issued this severe thunderstorm warning at Apr 18, 2002, 4:30 PM EDT for Beaufort County, North Carolina. It was in force for 30 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 18, 2002, 4:30 PM EDT (20:30 UTC)
Expired
Apr 18, 2002, 5:00 PM EDT
In force
30 min
Issued by
NWS Newport/Morehead City, NC
Area
Whole counties

County Beaufort County, NC

The radar

The Morehead City radar (KMHX), 79 km from the middle of the area, began a volume at 20:30 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

TimeReportWhereRemark
Apr 18, 4:53 PM EDTHail 0.88Blounts Creek Statio, 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

Newport, NC (KMHX), launched 12:00Z, 8.5 hours before the alert went out and 79 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, Newport, NC at 12:00Z on 2002-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 919 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, Newport, NC at 12:00Z on 2002-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939Sfc1 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
919 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
1151 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
92 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 
WUUS52 KMHX 182030
SVRMHX
NCC013-182100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEWPORT-MOREHEAD CITY NC
429 PM EDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE IN NEWPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BEAUFORT COUNTY IN EASTERN NORTH CAROLINA

* UNTIL 500 PM EDT

* AT 429 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
A   SEVERE THUNDERSTORM 5 MILES SOUTH OF EDWARD...OR ABOUT 10 MILES 
NORTHWEST OF BAYBORO...MOVING NORTHWEST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   EDWARD AT 440 PM EDT.
   BLOUNTS CREEK AT 500 PM EDT.

 

THIS STORM WILL PRODUCE LARGE HAIL. IF YOU ARE IN ITS PATH...PUT YOUR
CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

$$

LAT...LON 3514 7690 3526 7673 3552 7696 3538 7717

6

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 Newport/Morehead City, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 18, 2:20 PM EDT, 2 hours 10 minutes earlier.

Area forecast discussion, Apr 18, 2:20 PM EDT, 2 hours 10 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
220 PM EDT THU APR 18 2002

BERMUDA HIGH STILL IN CONTROL AT THE SFC AND UPPER RIDGE STILL
CONTINUING TO FLATTEN. NO REAL AIR MASS CHANGE THRU TOMORROW SO
TEMPS WILL ONCE AGAIN BE WARM TONIGHT WITH TEMPS IN THE 65-70 RANGE
NEAR THE COAST AND LOWER 60S IN THE USUAL COOLER LOCALES. EXPECT
SOME DEBRIS CI TONIGHT FROM ANY TSTMS THAT DEVELOP LATE THIS
AFTERNOON. EXPECT THE TSTMS TO DISSIPATE SHORTLY AFTER SUNSET IF NOT
BEFORE. WOULD EXPECT SOME CI TO SPILL OVER THE TOP OF THE RIDGE
TOMORROW AND SATURDAY WITH SOME CU FORMING ONCE THE CONVECTIVE TEMP
HAS BEEN REACHED TOMORROW AND AGAIN SATURDAY. PC SHOULD PROBABLY
WORK FOR TOMORROW AND TEMPS CLOSE TO TODAYS VALUES. NOT MUCH OF A
TRIGGER FOR PCPN OTHER THAN SEA BREEZE CONVERGENCE UNTIL TOMORROW
NIGHT WHEN A WEAK VORT MOVES ACROSS E NC. IN CONJUNCTION WITH THE
WEAK VORT THERE WILL BE AN H85 THETA-E RIDGE OVER E NC TOMORROW
NIGHT. A CHANCE OF PM TSTMS SAT.

TEMPS...ONCE AGAIN FWC TEMPS LOOK BETTER THAN MAV.

EXTENDED...MRF HAS FRONT SAGGING S SLOWER THAN YESTERDAYS SO
COOLER AIR WONT GET HERE UNTIL SUNDAY. SAT NIGHT THRU LATE MORNING
MON A SERIES OF VORTS AND WAVES OF LOW PRESSURE WILL KEEP US IN
CHANCE POPS WITH BEST CHANCE SUN NIGHT INTO MON MORNING. HIGH
PRESSURE BUILDING IN MON NIGHT AND MOVING OFF VACAPES LATE TUE.
ANOTHER FRONT APPROACHES WED NIGHT AND MOVES THROUGH THU. WILL ONLY
GO WITH SLIGHT CHANCE POPS WED NIGHT INTO THU.

RECORD HIGH TEMPERATURES FOR TOMORROW...

EWN 91/1985   HSE 81/1995   NCA 91/1985   NKT 89/1958

MARINE: PERSISTENT PATTERN IN MARINE FCST AS SW FLOW CONTINUES. SOME
INCREASE IN WIND FRI NIGHT AS MID-LEVEL VORT CENTER PASSES OVER OUR
NRN WATERS AND THIS WILL BE REFLECTED WITH 20 KT WINDS N OF HAT FRI
NIGHT. GLOBAL WAVE MODELS HINT AT SEAS INCREASING TO THE 4 TO 5 FEET
RANGE FRI NIGHT INTO SAT AS WELL. NO FLAGS THRU THE PERIOD.

.MHX...NONE

WS/CTC

In the hours before

Special weather statement, Apr 18, 3:16 PM EDT, 1 hour 14 minutes before
NCZ080-092-093-098-182215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEWPORT-MOREHEAD CITY NC
316 PM EDT THU APR 18 2002

WIDELY SCATTERED STRONG THUNDERSTORMS ARE EXPECTED OVER INLAND
SECTIONS OF ONSLOW COUNTY...ALONG WITH JONES...CRAVEN AND BEAUFORT
COUNTIES THROUGH THE LATE AFTERNOON HOURS. WIND GUSTS TO 40 MPH AND SMALL
HAIL ARE POSSIBLE WITH THESE STORMS.

CTC
Special weather statement, Apr 18, 4:11 PM EDT, 19 minutes before
NCZ045-046-080-081-092>094-098-182200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEWPORT-MOREHEAD CITY NC
411 PM EDT THU APR 18 2002

WIDELY SCATTERED STRONG THUNDERSTORMS CAN BE EXPECTED OVER EASTERN
NORTH CAROLINA EXTENDING FROM INLAND ONSLOW COUNTY NORTHWARD ACROSS
THE NEW BERN AREA TO BEAUFORT COUNTY AND OVER TYRRELL...WASHINGTON
AND MAINLAND DARE COUNTIES. THESE THUNDERSTORMS WILL PRODUCE WIND
GUSTS TO 40 MPH ALONG WITH SMALL HAIL AND FREQUENT LIGHTNING.

DUE TO THE SLOW MOVEMENT OF THESE THUNDERSTORMS...SOME LOCALIZED
RAINFALL AMOUNTS OF OVER ONE INCH ARE POSSIBLE.

CTC

Nearby

Severe Thunderstorm Warnings in North Carolina, 2002Every severe thunderstorm warning in 2002

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.