Alert archive / South Carolina / Heat Advisories in 2016

Heat Advisory 7, NWS Charleston, SC

July 9, 2016Berkeley County, Colleton County, Dorchester County, South Carolina

NWS Charleston, SC issued this heat advisory at Jul 9, 2016, 3:34 AM EDT for Berkeley County, Colleton County, Dorchester County, South Carolina. It took effect at Jul 9, 2016, 2:00 PM EDT. It was in force for 84 min.

The area

The counties it named.

The facts

Issued: Jul 9, 2016, 3:34 AM EDT (07:34 UTC)
In effect from: Jul 9, 2016, 2:00 PM EDT
Expired: Jul 9, 2016, 3:24 PM EDT
In force: 84 min
Issued by: NWS Charleston, SC

Counties Berkeley County, SC, Colleton County, SC, Dorchester County, SC

The radar

The Charleston,SC radar (KCLX), 79 km from the middle of the area, began a volume at 07:34 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, 7.6 hours before the alert went out and 35 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: 3204 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1436 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 14.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Charleston, SC wrote its last area forecast discussion before this heat advisory went out at Jul 9, 1:21 AM EDT, 2 hours 13 minutes earlier.

Area forecast discussion, Jul 9, 1:21 AM EDT, 2 hours 13 minutes before

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Hazardous weather outlook, Jul 8, 8:11 PM EDT, 7 hours 23 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
811 PM EDT FRI JUL 8 2016

GAZ087-088-099>101-114>119-137>141-SCZ040-042>045-047>052-100015-
JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-
INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-
INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY-
INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
TIDAL BERKELEY-
811 PM EDT FRI JUL 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND
SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

HEAT...HIGHS IN THE MID 90S TO AROUND 100 COMBINED WITH ELEVATED
HUMIDITY COULD PRODUCE HEAT INDICES AROUND 110 THROUGH THE
WEEKEND AWAY FROM THE BEACHES. HEAT ADVISORIES COULD BE NEEDED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

AMZ330-350-352-354-374-100015-
CHARLESTON HARBOR-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
811 PM EDT FRI JUL 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Jul 9, 12:35 AM EDT, 2 hours 59 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1235 AM EDT SAT JUL 9 2016

GAZ088-SCZ040-090500-
SCREVEN GA-ALLENDALE SC-
1235 AM EDT SAT JUL 9 2016

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF SCREVEN AND ALLENDALE
COUNTIES UNTIL 100 AM EDT...

AT 1234 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR SAVANNAH RIVER SITE...MOVING SOUTHEAST AT 40
MPH.

  HAZARD...STRONG WINDS 45 TO 55 MPH.

  IMPACT...EXPECT MINOR DAMAGE TO TREE LIMBS AND BLOWING AROUND OF
           LIGHT...UNSECURED OBJECTS.

SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE...
ALLENDALE...SYCAMORE...ULMER...SEIGLING...MARTIN...MILLHAVEN...MILLETT AND
BURTONS FERRY LANDING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS AS WELL AS LOCAL CABLE TV OUTLETS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3311 8137 3312 8120 3305 8113 3288 8143
      3292 8175 3304 8156 3307 8160 3309 8160
      3308 8161 3310 8161 3316 8154
TIME...MOT...LOC 0434Z 302DEG 37KT 3317 8171

Special weather statement, Jul 9, 1:26 AM EDT, 2 hours 8 minutes before

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Special weather statement, Jul 9, 1:56 AM EDT, 1 hour 38 minutes before

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Local storm report, Jul 9, 2:39 AM EDT, 55 minutes before

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Local storm report, Jul 9, 3:19 AM EDT, 15 minutes before

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The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 12:35 AM EDT	Special Weather Statement	CHS	Allendale	25 min
Jul 9, 12:53 AM EDT	Severe Thunderstorm Warning	CHS	Allendale, Berkeley, Colleton, Dorchester, Hampton	52 min
Jul 9, 1:26 AM EDT	Special Weather Statement	CHS	Berkeley	34 min
Jul 9, 1:56 AM EDT	Special Weather Statement	CHS	Berkeley, Colleton, Dorchester	49 min
Jul 9, 2:58 AM EDT	Special Marine Warning	CHS		62 min
Jul 9, 3:09 AM EDT	Special Marine Warning	CHS		66 min
Jul 9, 3:15 AM EDT	Special Marine Warning	CHS		60 min
Jul 9, 11:01 AM EDT	Special Weather Statement	CHS	Colleton	29 min
Jul 9, 11:04 AM EDT	Special Weather Statement	CHS	Charleston	26 min
Jul 9, 12:10 PM EDT	Special Weather Statement	CHS	Charleston	35 min
Jul 9, 12:23 PM EDT	Special Marine Warning	CHS		52 min
Jul 9, 12:47 PM EDT	Special Weather Statement	CHS	Charleston	43 min
Jul 9, 2:18 PM EDT	Special Weather Statement	CHS	Charleston	27 min
Jul 9, 2:50 PM EDT	Special Weather Statement	CHS	Beaufort, Jasper	40 min
Jul 9, 2:53 PM EDT	Special Weather Statement	CHS	Hampton	37 min
Jul 9, 3:06 PM EDT	Special Weather Statement	CHS	Jasper	39 min
Jul 9, 3:13 PM EDT	Severe Thunderstorm Warning	CHS	Hampton, Jasper	47 min
Jul 9, 3:21 PM EDT	Special Marine Warning	CHS		84 min
Jul 9, 3:35 PM EDT	Special Weather Statement	CHS	Jasper	25 min
Jul 9, 3:37 PM EDT	Special Weather Statement	CHS	Charleston	38 min
Jul 9, 3:52 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Charleston, Colleton, Jasper	53 min
Jul 9, 4:01 PM EDT	Special Marine Warning	CHS		89 min
Jul 9, 4:40 PM EDT	Special Marine Warning	CHS		95 min
Jul 9, 5:13 PM EDT	Special Weather Statement	CHS	Berkeley	32 min
Jul 9, 5:18 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Dorchester	42 min
Jul 9, 5:38 PM EDT	Special Weather Statement	CHS	Dorchester	37 min
Jul 9, 12:55 PM EDT	Special Weather Statement	CHS	Jenkins	50 min
Jul 9, 1:44 PM EDT	Special Weather Statement	CHS	Bulloch	46 min
Jul 9, 2:00 PM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Candler	30 min
Jul 9, 2:31 PM EDT	Special Weather Statement	CHS	Bulloch, Candler	44 min
Jul 9, 2:36 PM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Effingham	54 min
Jul 9, 3:07 PM EDT	Special Weather Statement	CHS	Evans	23 min
Jul 9, 3:15 PM EDT	Special Weather Statement	CHS	Jenkins	30 min
Jul 9, 4:23 PM EDT	Special Weather Statement	CHS	Jenkins	52 min

Nearby

Heat Advisories in South Carolina, 2016 Heat Advisories in Georgia, 2016 Every heat advisory in 2016

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.