Alert archive / North Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Newport/Morehead City, NC

July 23, 2011Onslow County, North Carolina

NWS Newport/Morehead City, NC issued this special weather statement at Jul 23, 2011, 6:13 PM EDT for Onslow County, North Carolina. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 23, 2011, 6:13 PM EDT (22:13 UTC)
Expired
Jul 23, 2011, 7:15 PM EDT
In force
62 min
Issued by
NWS Newport/Morehead City, NC

County Onslow County, NC

The radar

The Morehead City radar (KMHX), 65 km from the middle of the area, began a volume at 22:13 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, 10.2 hours before the alert went out and 65 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 2011-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2556 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 2011-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
2556 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
43 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.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 23, 2:58 PM EDT, 3 hours 15 minutes earlier.

Area forecast discussion, Jul 23, 2:58 PM EDT, 3 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
258 PM EDT SAT JUL 23 2011

.SYNOPSIS...
A TROUGH OF LOW PRESSURE WILL CONTINUE TO LINGER INLAND THROUGH
THE NEXT SEVERAL DAYS AS HIGH PRESSURE CONTINUES OFFSHORE. A WEAK
COLD FRONT WILL MOVE INTO THE AREA TUESDAY BEFORE STALLING AND
DISSIPATING.

&&

.NEAR TERM /THROUGH SUNDAY MORNING/...
AS OF 245 PM SATURDAY...AS EXPECTED ISOLATED TSTMS HAVE DEVELOPED
OVER THE SOUTHERN COASTAL PLAINS IN AREA OF VERY STRONG
INSTABILITY...WITH SPC ANALYSIS SHOWING SURFACE-BASED CAPE VALUES
APPROACH 5000 J/KG. ANTICIPATE THESE SCATTERED SHOWERS/TSTMS
UNTIL ABOUT DARK PER LATEST HIGH-RES MODELS. ANOTHER VERY WARM
MUGGY NIGHT WITH MIN TEMPS WITHIN A DEGREE OR TWO OF 80 DEGREES.

&&

.SHORT TERM /SUNDAY MORNING THROUGH 6 PM SUNDAY EVENING/...
AS OF 245 PM SATURDAY...WITH THE SURFACE TROUGH LINGERING INLAND
TOMORROW AND A BIT MORE DEEP MOISTURE IN PLACE...COUPLED WITH
INCREASED SHORTWAVE ENERGY AT THE MID-LEVELS ON SUNDAY...THINK
THERE WILL BE A SLIGHTLY BETTER CHANCE OF SHOWERS/TSTMS DURING
SUNDAY AFTERNOON AND EVENING. HEAT INDICES WILL BE MORE MARGINAL
FOR EXCESSIVE HEAT WARNING ON SUNDAY...BUT A FEW SPOTS WILL HIT 110
DEGREES AND FOR CONTINUITIES SAKE...WILL CONTINUE EXCESSIVE HEAT
WARNING FOR ONE MORE DAY AS HIGH TEMPS RANGE FROM 88 TO 90 NEAR
THE COAST AND 94 TO 98 DEGREES INLAND WITH SIMILAR OR SLIGHTLY
HIGHER DEWPOINTS FROM TODAY.

&&

.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
AS OF 230 PM SAT...UNSETTLED PATTERN THROUGH EARLY NEXT WEEK.
UPPER LEVEL RIDGE RETROGRADES WEST AS AN UPPER LOW MOVES FROM
CENTRAL CANADA TO THE NORTHEAST STATES. COLD FRONT WILL DROP INTO
NORTHERN PART OF THE STATE TUESDAY THEN DISSIPATES WEDNESDAY. BEST
RAIN CHANCES WILL BE MONDAY NIGHT INTO TUESDAY. TIME SECTIONS SHOW
GOOD VORT ADVECTION IN THE LOW AND MID LEVELS ALONG WITH DEEP
MOISTURE AND LIFT. DO NOT WANT TO GO LIKELY POPS THIS EARLY SO
WILL CAP RAIN CHANCES AT 50 PERCENT. MOISTURE THINS OUT WEDNESDAY
WITH POPS DROPPING BACK TO 20 PERCENT. DRY AND HOT THURSDAY AND
FRIDAY AS THE UPPER RIDGE BUILDS BACK ACROSS THE REGION. LEESIDE
TROF SETS UP AGAIN SATURDAY WITH ISOLATED AFTERNOON/EVENING
CONVECTION POSSIBLE.

&&

.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
SHORT TERM /TONIGHT AND SUNDAY/...
AS OF 250 PM SATURDAY...WILL CARRY VCTS/CB FOR SCATTERED SHOWERS
AND TSTMS THRU EARLY EVENING. OTHERWISE...SHORT TERM TAFS SHOULD
BE IN THE VFR RANGE WITH ENOUGH MIXING OVERNIGHT TO PREVENT MUCH
IN THE WAY OF FOG OR LOW STRATUS.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
AS OF 230 PM SAT...FOR THE MOST PART VFR CONDITIONS EXPECTED
THROUGH THE PERIOD. SCATTERED CONVECTION EXPECTED THROUGH EARLY
NEXT WEEK WITH LOCALLY IFR/MVFR IN SHOWERS AND STORMS. ONLY
ISOLATED ACTIVITY WEDNESDAY AND DRY THURSDAY.

&&

.MARINE...
/SHORT TERM TONIGHT AND SUNDAY/...
AS OF 255 PM SATURDAY...WILL EXTEND THE SMALL CRAFT ADVISORY FOR
THE CENTRAL WATERS THRU MID-MORNING ON SUNDAY. STRONG SW GRADIENT
BETWEEN SHARPENING INLAND TROUGH AND BROAD HIGH PRESSURE NEAR
BERMUDA WILL LEAD TO 15 TO 20 KNOT WINDS...WITH A FEW HIGHER GUSTS
TONIGHT. PER LOCAL SWAN AND WAVEWATCH GUIDANCE...SOME 6 FOOT SEAS
POSSIBLE OVER THE OUTER PERIPHERY OF THE CENTRAL WATERS...THUS THE
SCA.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/
AS OF 230 PM SAT...SOUTHWEST FLOW WILL CONTINUE INTO MONDAY NIGHT.
COLD FRONT WILL DROP INTO THE NORTHERN WATERS TUESDAY THEN
DISSIPATES WEDNESDAY. THIS WILL TEMPORARILY VEER THE WINDS OVER
THE CENTRAL AND NORTHERN WATERS TO WEST TO NORTH TUESDAY AND
TUESDAY NIGHT. AS THE FRONT DISSIPATES WEDNESDAY WINDS WILL BACK
TO SOUTHWEST WEDNESDAY. SEAS WILL INCREASE TO SMALL CRAFT LEVELS
AGAIN MONDAY NIGHT AND TUESDAY AHEAD OF THE APPROACHING FRONT THEN
SUBSIDE TUESDAY NIGHT AND WEDNESDAY. VERY GOOD BOATING CONDITIONS
EXPECTED FOR WEDNESDAY AND THURSDAY WITH A LIGHT WINDS AND SEAS IN
A SOUTHERLY FLOW.

&&

.MHX WATCHES/WARNINGS/ADVISORIES...
NC...EXCESSIVE HEAT WARNING UNTIL 8 PM EDT THIS EVENING FOR NCZ029-
     044>047-079>081-090>095-098-103-104.
MARINE...SMALL CRAFT ADVISORY FROM 7 PM THIS EVENING TO 11 AM EDT
     SUNDAY FOR AMZ152-154.

&&

SYNOPSIS...CTC
NEAR TERM...CTC
SHORT TERM...CTC
LONG TERM...HSA
AVIATION...CTC/HSA
MARINE...CTC/HSA
Hazardous weather outlook, Jul 23, 5:31 AM EDT, 12 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK FOR EASTERN NORTH CAROLINA
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
531 AM EDT SAT JUL 23 2011

NCZ095-103-104-240945-
CARTERET-OUTER BANKS DARE-OUTER BANKS HYDE-
531 AM EDT SAT JUL 23 2011

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...MODERATE RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   EXCESSIVE HEAT WARNING.
   MODERATE RIP CURRENT RISK.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HEAT INDEX VALUES OF 105 DEGREES OR HIGHER ARE POSSIBLE SUNDAY
AND MONDAY AFTERNOONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ029-044>047-079>081-091>094-240945-
MARTIN-PITT-WASHINGTON-TYRRELL-MAINLAND DARE-GREENE-BEAUFORT-
MAINLAND HYDE-LENOIR-JONES-CRAVEN-PAMLICO-
531 AM EDT SAT JUL 23 2011

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   EXCESSIVE HEAT WARNING.

WIDELY SCATTERED STORMS ARE POSSIBLE THIS AFTERNOON AND
EVENING...WITH AN ISOLATED THREAT OF DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HEAT INDEX VALUES OF 105 DEGREES OR HIGHER ARE POSSIBLE SUNDAY
AND MONDAY AFTERNOONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ090-240945-
DUPLIN-
531 AM EDT SAT JUL 23 2011

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...AIR QUALITY ALERT IN EFFECT UNTIL 9 AM EDT THIS MORNING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   EXCESSIVE HEAT WARNING.
   AIR QUALITY ALERT.

SCATTERED STORMS ARE POSSIBLE THIS AFTERNOON AND EVENING...WITH AN
ISOLATED THREAT OF DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HEAT INDEX VALUES OF 105 DEGREES OR HIGHER ARE POSSIBLE SUNDAY
AND MONDAY AFTERNOONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ098-240945-
ONSLOW-
531 AM EDT SAT JUL 23 2011

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING...
...AIR QUALITY ALERT IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...MODERATE RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   EXCESSIVE HEAT WARNING.
   MODERATE RIP CURRENT RISK.
   AIR QUALITY ALERT.

SCATTERED STORMS ARE POSSIBLE THIS AFTERNOON AND EVENING...WITH AN
ISOLATED THREAT OF DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HEAT INDEX VALUES OF 105 DEGREES OR HIGHER ARE POSSIBLE SUNDAY
AND MONDAY AFTERNOONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 23, 5:12 PM EDT, 1 hour 1 minute before
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Special weather statement, Jul 23, 5:19 PM EDT, 54 minutes before
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Special weather statement, Jul 23, 5:34 PM EDT, 39 minutes before
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Special weather statement, Jul 23, 5:51 PM EDT, 22 minutes before
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Special weather statement, Jul 23, 6:05 PM EDT, 8 minutes before
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Special weather statement, Jul 23, 6:13 PM EDT, 0 minutes before
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The office that day

Everything else NWS Newport/Morehead City, NC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 23, 4:06 AM EDTSmall Craft AdvisoryMHX30 hr
Jul 23, 10:24 AM EDTSpecial Weather StatementMHXTyrrell66 min
Jul 23, 2:38 PM EDTSpecial Weather StatementMHXJones67 min
Jul 23, 3:47 PM EDTSevere Thunderstorm WarningMHXJones43 min
Jul 23, 3:52 PM EDTSpecial Weather StatementMHXWashington38 min
Jul 23, 3:58 PM EDTSpecial Weather StatementMHXOnslow62 min
Jul 23, 3:59 PM EDTSpecial Weather StatementMHXDuplin61 min
Jul 23, 4:06 PM EDTSevere Thunderstorm WarningMHXJones, Onslow39 min
Jul 23, 4:28 PM EDTSpecial Weather StatementMHXPitt62 min
Jul 23, 4:42 PM EDTSpecial Weather StatementMHXLenoir63 min
Jul 23, 4:47 PM EDTSpecial Weather StatementMHXJones58 min
Jul 23, 4:59 PM EDTSpecial Weather StatementMHXGreene46 min
Jul 23, 5:19 PM EDTSpecial Weather StatementMHXTyrrell56 min
Jul 23, 5:34 PM EDTSpecial Weather StatementMHXBeaufort56 min
Jul 23, 5:51 PM EDTSpecial Weather StatementMHXHyde54 min
Jul 23, 6:05 PM EDTSpecial Weather StatementMHXCraven, Jones55 min
Jul 23, 6:15 PM EDTSpecial Weather StatementMHXWashington60 min

Nearby

Special Weather Statements in North Carolina, 2011Every special weather statement in 2011

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.