Alert archive / Georgia / Special Weather Statements in 2020

Special Weather Statement, NWS Charleston, SC

August 4, 2020McIntosh County, Georgia

NWS Charleston, SC issued this special weather statement at Aug 4, 2020, 2:30 PM EDT for McIntosh County, Georgia. It was in force for 30 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
Aug 4, 2020, 2:30 PM EDT (18:30 UTC)
Expired
Aug 4, 2020, 3:00 PM EDT
In force
30 min
Issued by
NWS Charleston, SC

County McIntosh County, GA

The radar

The Jacksonville radar (KJAX), 99 km from the middle of the area, began a volume at 18:33 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 12:00Z, 6.5 hours before the alert went out and 218 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 12:00Z on 2020-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 12:00Z on 2020-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 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
18 J/kg
Mixed-layer CIN
-286 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
59 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 Charleston, SC wrote its last area forecast discussion before this special weather statement went out at Aug 4, 1:51 PM EDT, 39 minutes earlier.

Area forecast discussion, Aug 4, 1:51 PM EDT, 39 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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Hazardous weather outlook, Aug 4, 1:57 PM EDT, 33 minutes before
Hazardous Weather Outlook
National Weather Service Charleston SC
157 PM EDT Tue Aug 4 2020

AMZ330-350-GAZ087-088-SCZ040-042>045-052-051800-
Charleston Harbor-
Waters from South Santee River to Edisto Beach SC out 20 NM-Jenkins-
Screven-Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley-
Tidal Berkeley-
157 PM EDT Tue Aug 4 2020

This Hazardous Weather Outlook is for Atlantic coastal waters,
southeast Georgia and southeast South Carolina.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

SCZ049-050-051800-
Coastal Colleton-Charleston-
157 PM EDT Tue Aug 4 2020

...MODERATE RISK FOR RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southeast South Carolina.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Moderate Risk for Rip Currents.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

AMZ352-354-374-GAZ099>101-114>116-118-137-138-140-SCZ047-051800-
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 from 20 to 60 NM-
Candler-Bulloch-Effingham-Tattnall-Evans-Inland Bryan-Inland Chatham-
Long-Inland Liberty-Inland McIntosh-Inland Jasper-
157 PM EDT Tue Aug 4 2020

This Hazardous Weather Outlook is for Atlantic coastal waters,
southeast Georgia and southeast South Carolina.

.DAY ONE...This afternoon and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

GAZ117-119-139-141-SCZ048-051-051800-
Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh-
Beaufort-Coastal Jasper-
157 PM EDT Tue Aug 4 2020

...MODERATE RISK FOR RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for southeast Georgia and
southeast South Carolina.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Moderate Risk for Rip Currents.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

In the hours before

Local storm report, Aug 4, 10:16 AM EDT, 4 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1016 AM EDT TUE AUG 04 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 AM     RIP CURRENTS     1 NE FOLLY FIELD        32.21N  80.68W
08/04/2020                   BEAUFORT           SC   LIFE GUARD

            A WEAK RIP CURRENT WAS OBSERVED BY THE HILTON HEAD
            LIFEGUARDS.

&&

EVENT NUMBER CHS2000570
Local storm report, Aug 4, 11:17 AM EDT, 3 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1117 AM EDT TUE AUG 04 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1045 AM     RIP CURRENTS     1 NNE TYBEE ISLAND      32.01N  80.84W
08/04/2020                   CHATHAM            GA   LIFE GUARD

            A LARGE, STRONG RIP CURRENT WAS REPORTED NEAR 2ND
            STREET ON TYBEE ISLAND. FOUR PEOPLE WERE RESCUED AFTER
            BEING PULLED OUT 100 YARDS.

&&

EVENT NUMBER CHS2000571
Local storm report, Aug 4, 11:21 AM EDT, 3 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1121 AM EDT TUE AUG 04 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1110 AM     RIP CURRENTS     1 S TYBEE ISLAND        31.99N  80.85W
08/04/2020                   CHATHAM            GA   LIFE GUARD

            A LARGE STRONG RIP CURRENT WAS REPORTED NEAR 18TH
            STREET ON TYBEE ISLAND. TWO PEOPLE WERE RESCUED.

&&

EVENT NUMBER CHS2000572
Special weather statement, Aug 4, 2:30 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Charleston SC
230 PM EDT Tue Aug 4 2020

GAZ140-141-041900-
Inland McIntosh-Coastal McIntosh-
230 PM EDT Tue Aug 4 2020

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF MCINTOSH COUNTY...

At 230 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm near Wolf Island, or near Darien. This storm was
nearly stationary.

  HAZARD...strong winds 45 to 55 mph and excessive cloud to ground
           lightning.

  IMPACT...Expect minor damage to tree limbs and blowing around of
           light, unsecured objects. All outdoor activities should
           cease. Move indoors immediately.

Some locations in the path of this storm include...
Darien, Wolf Island, Carnigan, Sapelo Island, Little Saint Simons
Island, Meridian and Ridgeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm and may lead to
flooding of low lying and poor drainage areas. Do not drive your
vehicle through flooded roadways.

&&

LAT...LON 3129 8142 3130 8142 3132 8144 3133 8144
      3133 8145 3134 8147 3134 8149 3137 8153
      3148 8140 3145 8125 3129 8124
TIME...MOT...LOC 1830Z 345DEG 2KT 3138 8134

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 10:23 PM EDTSpecial Marine WarningCHS97 min
Aug 3, 11:56 PM EDTSpecial Marine WarningCHS49 min
Aug 4, 2:16 PM EDTSpecial Marine WarningCHS59 min
Aug 4, 4:40 PM EDTSevere Thunderstorm WarningCHSJasper50 min
Aug 4, 5:09 PM EDTSpecial Weather StatementCHSJasper51 min
Aug 4, 5:32 PM EDTSevere Thunderstorm WarningCHSJasper43 min
Aug 4, 6:13 PM EDTSpecial Weather StatementCHSHampton32 min
Aug 3, 9:51 PM EDTSpecial Weather StatementCHSMcIntosh39 min
Aug 3, 10:31 PM EDTSpecial Weather StatementCHSMcIntosh29 min
Aug 4, 2:54 PM EDTSpecial Weather StatementCHSMcIntosh36 min
Aug 4, 4:15 PM EDTSpecial Weather StatementCHSBryan30 min
Aug 4, 4:51 PM EDTSpecial Weather StatementCHSTattnall24 min

Nearby

Special Weather Statements in Georgia, 2020Every special weather statement in 2020

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.