Alert archive / South Carolina / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 202, NWS Columbia, SC

July 28, 2008Orangeburg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Jul 28, 2008, 5:59 PM EDT for Orangeburg County, South Carolina. It was in force for 46 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 28, 2008, 5:59 PM EDT (21:59 UTC)
Expired: Jul 28, 2008, 6:45 PM EDT
In force: 46 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

County Orangeburg County, SC

The radar

The Columbia radar (KCAE), 66 km from the middle of the area, began a volume at 22:02 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 10.0 hours before the alert went out and 91 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: 1898 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 923 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KCAE 282200
SVRCAE
SCC075-282245-
/O.NEW.KCAE.SV.W.0202.080728T2159Z-080728T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
559 PM EDT MON JUL 28 2008

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 645 PM EDT

* AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
  NORTHWEST OF BOWMAN...OR ABOUT 8 MILES SOUTHEAST OF BROOKDALE...AND
  MOVING NORTHWEST AROUND 5 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE                       
  ORANGEBURG...CORDOVA...BOWMAN AND ROWESVILLE

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE IN COLUMBIA TOLL FREE
AT 1 800 7 7 5 7 1 9 9.

LAT...LON 3341 8101 3361 8081 3358 8077 3352 8069
      3349 8069 3347 8065 3348 8064 3346 8061
      3347 8061 3348 8062 3349 8061 3336 8044
      3321 8072
TIME...MOT...LOC 2159Z 127DEG 15KT 3344 8074

$$

HC

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 Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 2:34 PM EDT, 3 hours 25 minutes earlier.

Area forecast discussion, Jul 28, 2:34 PM EDT, 3 hours 25 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
234 PM EDT MON JUL 28 2008

.SYNOPSIS...
A WEAK COLD FRONT REMAINS ACROSS THE FORECAST AREA. ANOTHER COLD
FRONT WILL APPROACH FROM THE NORTH LATER IN THE WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
SATELLITE AND OBS SHOW CU DEVELOPING ALONG/S OF CONVERGENCE
BOUNDARY. DRIER AIR NWD...TDS IN THE 50S/60S AND SWD...TDS IN THE
70S. EXPECT SCT SHRA/TSRA TO CONTINUE ALONG/S OF BOUNDARY DURING
DAYTIME HEATING INTO THE EARLY EVENING HOURS. GUIDANCE AND LOCAL
NUMBERS VERY CLOSE AND HAVE STAYED NEAR/JUST BELOW GUIDANCE.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
NAMWRF AND GFS INDICATE THAT MID/UPPER LEVEL TROFINESS ACROSS THE
AREA WILL BEGIN TO LIFT NWD TUE INTO WED...BEFORE S/W ENERGY MOVES
ACROSS THE GREAT LAKE/OH RIVER VALLEY WED AFTERNOON/NIGHT. WEAK
FRONTAL BOUNDARY EXPECTED TO REMAIN IN THE VICINITY TUE BEFORE
RETREATING NWD ON WED. MODEL TIME SECTIONS CONTINUE TO SHOW
ENOUGH LOW LEVEL MOISTURE THROUGH THE PERIOD AND INSTABILITY TO
WARRANT A SMALL POP FOR AFTERNOON/EARLY EVENING SHRA/TSRA.
GUIDANCE AND LOCAL NUMBERS SIMILAR...BUT FWC CONTINUES TO BE THE
COOLER GUIDANCE. FWC NUMBERS HAVE DONE MUCH BETTER THAN OTHER
GUIDANCE OVER THE PAST FEW WEEKS. HAVE STAYED CLOSE TO
FWC/CONSENSUS FOR TEMPS.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
COLD FRONT APPROACHES FROM THE NORTHWEST LATER IN THE WEEK AS
UPPER LEVEL TROUGH RE-ESTABLISHES ITSELF OVER THE EAST COAST. GFS
SHOWS COLD FRONT PUSHING OFF THE SE COAST BY SATURDAY AND THEN
STALLING OFFSHORE SUNDAY. ALSO...BY SUN INTO MONDAY...MID/UPPER
LEVEL RIDGING TRIES TO BUILD EWD INTO THE AREA. STILL SOME
QUESTION HOW FAR FRONT WILL ADVANCE THROUGH THE CAROLINAS AT THIS
TIME SO WILL INCREASE POPS TO CHANCE FOR MUCH OF THE EXTENDED
PERIOD ALTHOUGH MOST OF THE CONVECTIVE ACTIVITY SHOULD BE DIURNAL
IN NATURE. TEMPS CLOSE TO CLIMATOLOGICAL VALUES.

&&

.AVIATION /19Z MONDAY THROUGH SATURDAY/...
VFR CONDITIONS EXPECTED THROUGH THE TAF PERIOD. WEAK FRONTAL
BOUNDARY WILL REMAIN ACROSS THE CENTRAL PORTIONS OF THE FORECAST
AREA THIS EVENING. SLIGHTLY DRIER AIR MOVING IN NORTH OF THE
FRONT. MOSTLY CLEAR SKIES NORTH OF THE FRONT...WITH SCATTERED
CLOUDS 3.5KFT SOUTH OF THE FRONT. ISOLATED SHOWERS OR
THUNDERSTORMS MAY BE ENCOUNTERED AT KAGS...KDNL...AND KOGB DURING
THE AFTERNOON HOURS...BUT THIS ACTIVITY SHOULD DIMINISH BY SUNSET.
CONFIDENCE IN ANY ONE TAF SITE GETTING PRECIP IS LOW...SO WILL
ONLY INCLUDE CB IN CLOUD GROUP FOR NOW. POTENTIAL FOR FOG AFTER
06Z IS LOW DUE TO DRIER AIR. WINDS THROUGH THE PERIOD WILL BECOME
MORE VARIABLE AROUND 5 KNOTS.

EXTENDED AVIATION OUTLOOK...NO SIGNIFICANT IMPACTS TO AVIATION
EXPECTED TUESDAY THROUGH FRIDAY.

&&

.CAE WATCHES/WARNINGS/ADVISORIES...
SC...NONE.
GA...NONE.

&&

SYNOPSIS...77
NEAR TERM...77
SHORT TERM...77
LONG TERM...77
AVIATION...

Hazardous weather outlook, Jul 28, 5:29 AM EDT, 12 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
529 AM EDT MON JUL 28 2008

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-290930-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
529 AM EDT MON JUL 28 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND
CENTRAL SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 28, 2:37 PM EDT, 3 hours 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
237 PM EDT MON JUL 28 2008

GAZ040-064-SCZ018-025-281915-
COLUMBIA-EDGEFIELD-LINCOLN-MCCORMICK-
237 PM EDT MON JUL 28 2008

...A STRONG THUNDERSTORM WAS AFFECTING COLUMBIA...EDGEFIELD...LINCOLN
AND MCCORMICK COUNTIES...

AT 237 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 11 MILES NORTH OF EVANS...MOVING EAST AT 5 MPH.

PEA SIZE HAIL...AND WINDS 30 TO 40 MPH ARE EXPECTED WITH THIS STORM.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE IN COLUMBIA TOLL FREE
AT 1 800 7 7 5 7 1 9 9.

Local storm report, Jul 28, 3:47 PM EDT, 2 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
347 PM EDT MON JUL 28 2008

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

0317 PM     HAIL             3 NW EVANS              33.54N 82.18W
07/28/2008  E0.75 INCH       COLUMBIA           GA   PUBLIC

            AT THE PUMPING STATION, ALONG HIGHWAY 104 NORTHWEST OF
            EVANS, PUBLIC REPORTED PENNY SIZED HAIL.

&&

CAL

Local storm report, Jul 28, 4:25 PM EDT, 1 hour 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
425 PM EDT MON JUL 28 2008

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

0408 PM     HAIL             5 SW EVANS              33.45N 82.20W
07/28/2008  E0.88 INCH       COLUMBIA           GA   BROADCAST MEDIA

            TV STATION AUGUSTA GEORGIA HAD A PUBLIC REPORT OF DIME TO
            NICKEL SIZE HAIL IN THE PATRIOTS PARK AREA NEAR
            GROVETOWN.

&&

Local storm report, Jul 28, 5:21 PM EDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
521 PM EDT MON JUL 28 2008

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

0508 PM     TSTM WND DMG     5 SE AIKEN              33.49N 81.68W
07/28/2008                   AIKEN              SC   PUBLIC

            PUBLIC REPORT OF TREES DOWN AND PEA SIZE HAIL. ALSO
            REPORT OF MINOR FLOODING

&&

AWP

Local storm report, Jul 28, 5:29 PM EDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
529 PM EDT MON JUL 28 2008

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

0415 PM     TSTM WND DMG     4 NW GROVETOWN          33.49N 82.24W
07/28/2008                   COLUMBIA           GA   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTS TREES DOWN AT THE INTERSECTION OF
            I-20 AND BAKERS PLACE RD.

0411 PM     TSTM WND DMG     5 NW GROVETOWN          33.49N 82.28W
07/28/2008                   COLUMBIA           GA   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTS TREES DOWN AT THE INTERSECTION OF
            I-20 AND LOUISVILLE RD.

&&

DAG

Local storm report, Jul 28, 5:32 PM EDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
532 PM EDT MON JUL 28 2008

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

0415 PM     TSTM WND DMG     4 NW GROVETOWN          33.49N 82.24W
07/28/2008                   COLUMBIA           GA   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTS POWERLINES AND TREES DOWN AT THE
            INTERSECTION OF BAKER PLACE RD. AND BAKER PLACE LN.

0410 PM     TSTM WND DMG     7 NW EVANS              33.59N 82.22W
07/28/2008                   COLUMBIA           GA   LAW ENFORCEMENT

            LAW ENFORCEMENT REPORTS TREES DOWN AT THE INTERSECTION OF
            WASHINGTON RD. AND TUBMAN RD.

&&

DAG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 1:11 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, McCormick	49 min
Jul 28, 3:10 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, McCormick	50 min
Jul 28, 4:43 PM EDT	Severe Thunderstorm Warning	CAE	Aiken	47 min
Jul 28, 4:44 PM EDT	Areal Flood Advisory	CAE	Aiken	61 min
Jul 28, 4:46 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Barnwell, Orangeburg	44 min
Jul 28, 6:24 PM EDT	Severe Thunderstorm Warning	CAE	Lexington	51 min
Jul 28, 6:53 PM EDT	Areal Flood Advisory	CAE	Lexington	67 min
Jul 28, 7:36 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Richland	39 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2008 Every severe thunderstorm warning in 2008

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.