Alert archive / South Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Wilmington, NC

March 31, 2017Marion County, South Carolina

NWS Wilmington, NC issued this special weather statement at Mar 31, 2017, 4:55 AM EDT for Marion County, South Carolina. It was in force for 65 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
Mar 31, 2017, 4:55 AM EDT (08:55 UTC)
Expired
Mar 31, 2017, 6:00 AM EDT
In force
65 min
Issued by
NWS Wilmington, NC

County Marion County, SC

The radar

The Wilmington radar (KLTX), 86 km from the middle of the area, began a volume at 08:59 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

Charleston AFB, SC (KCHS), launched 00:00Z, 8.9 hours before the alert went out and 136 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, Charleston AFB, SC at 00:00Z on 2017-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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, Charleston AFB, SC at 00:00Z on 2017-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939587897Sfc1 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
10 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
966 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
201 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Wilmington, NC wrote its last area forecast discussion before this special weather statement went out at Mar 31, 2:59 AM EDT, 1 hour 56 minutes earlier.

Area forecast discussion, Mar 31, 2:59 AM EDT, 1 hour 56 minutes before
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Hazardous weather outlook, Mar 31, 4:08 AM EDT, 47 minutes before
Hazardous Weather Outlook
National Weather Service Wilmington NC
408 AM EDT Fri Mar 31 2017

NCZ087-SCZ017-023-024-032-033-039-010815-
Robeson-Marlboro-Darlington-Dillon-Florence-Marion-Williamsburg-
408 AM EDT Fri Mar 31 2017

This Hazardous Weather Outlook is for southeast North Carolina and
northeast South Carolina.

.DAY ONE...Today and Tonight.

There is a marginal risk for severe weather this morning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Severe weather is possible Monday into Monday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

AMZ250-252-254-256-010815-
Coastal waters from Surf City to Cape Fear NC out 20 nm-
Coastal waters from Cape Fear NC to Little River Inlet SC out 20 nm-
Coastal waters from Little River Inlet to Murrells Inlet SC out
20 nm-
Coastal waters from Murrells Inlet to South Santee River SC out
20 nm-
408 AM EDT Fri Mar 31 2017

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY...

This Hazardous Weather Outlook is for The adjacent Coastal Waters.

.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.

   Small Craft Advisory.

There is a slight risk for severe weather today.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Small craft conditions are possible Monday and Tuesday of next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ096-099-105>110-SCZ053>056-010815-
Bladen-Columbus-Inland Pender-Coastal Pender-Inland New Hanover-
Coastal New Hanover-Inland Brunswick-Coastal Brunswick-Inland Horry-
Coastal Horry-Inland Georgetown-Coastal Georgetown-
408 AM EDT Fri Mar 31 2017

This Hazardous Weather Outlook is for southeast North Carolina and
northeast South Carolina.

.DAY ONE...Today and Tonight.

There is a slight risk for severe weather this morning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Severe weather is possible Monday into Monday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Mar 31, 4:31 AM EDT, 24 minutes before
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Special weather statement, Mar 31, 4:55 AM EDT, 0 minutes before
Special Weather Statement
National Weather Service Wilmington NC
455 AM EDT FRI MAR 31 2017

SCZ024-032-033-039-053-311000-
Inland Horry SC-Marion SC-Williamsburg SC-Florence SC-Dillon SC-
455 AM EDT FRI MAR 31 2017

...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN FLORENCE...SOUTHEASTERN
DILLON...NORTHWESTERN HORRY...MARION AND NORTHEASTERN WILLIAMSBURG
COUNTIES UNTIL 600 AM EDT...

At 454 AM EDT, Doppler radar was tracking a strong thunderstorm over
Hemingway, or 17 miles southeast of Lake City, moving northeast at 35
mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Marion, Dillon, Mullins, Johnsonville, Lake View, Hemingway, Fork,
Zion, Gapway, Poston, Brittons Neck, Rains, Indiantown, Gresham,
Henry, Galivants Ferry, Hannah, Floydale, Smithboro and Kemper.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3450 7932 3425 7903 3374 7936 3371 7940
      3364 7942 3369 7967
TIME...MOT...LOC 0854Z 202DEG 31KT 3375 7949

RJD

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 1:33 AM EDTSpecial Marine WarningILM57 min
Mar 31, 4:11 AM EDTSpecial Marine WarningILM64 min
Mar 31, 4:31 AM EDTSpecial Weather StatementILMDarlington, Marlboro59 min
Mar 31, 4:47 AM EDTSpecial Marine WarningILM28 min
Mar 31, 5:23 AM EDTSpecial Weather StatementILMDarlington, Marlboro67 min
Mar 31, 6:11 AM EDTSpecial Weather StatementILMDillon, Marion64 min
Mar 31, 8:09 AM EDTSpecial Weather StatementILMWilliamsburg66 min
Mar 31, 9:08 AM EDTSpecial Marine WarningILM37 min
Mar 31, 9:57 AM EDTSpecial Marine WarningILM63 min
Mar 31, 10:58 AM EDTSpecial Marine WarningILM62 min
Mar 31, 5:20 AM EDTSpecial Weather StatementILMBladen55 min
Mar 31, 9:21 AM EDTSpecial Weather StatementILMNew Hanover39 min
Mar 31, 9:58 AM EDTSpecial Weather StatementILMNew Hanover62 min

Nearby

Special Weather Statements in South Carolina, 2017Every special weather statement in 2017

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.