Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 22, 2012Burke County, Caldwell County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 22, 2012, 1:48 PM EDT for Burke County, Caldwell County, North Carolina. It was in force for 42 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 22, 2012, 1:48 PM EDT (17:48 UTC)
Expired: Jul 22, 2012, 2:30 PM EDT
In force: 42 min
Issued by: NWS Greenville-Spartanburg, SC

Counties Burke County, NC, Caldwell County, NC

The radar

The Greer radar (KGSP), 124 km from the middle of the area, began a volume at 17:50 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.8 hours before the alert went out and 153 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: 1359 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 458 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 133 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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this special weather statement went out at Jul 22, 10:35 AM EDT, 3 hours 13 minutes earlier.

Area forecast discussion, Jul 22, 10:35 AM EDT, 3 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1035 AM EDT SUN JUL 22 2012

.SYNOPSIS...
A WEAKENING FRONTAL BOUNDARY WILL LIE ACROSS THE AREA BEFORE
DISSIPATING. AS A WEAK RIDGE TRIES TO BUILD INTO THE REGION FROM THE
SOUTHEAST...A LEE TROF WILL DEVELOP AND REMAIN ACROSS THE PIEDMONT
THROUGH MID WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
AS OF 1030 AM...CLOUDS TODAY ARE FLIP-FLOPPED FROM SATURDAY.
BASICALLY CLEAR SKIES NE GA/UPSTATE WITH SCT TO BKN LOW CLOUDS OVER
NC. EXPECT SKIES TO SCATTER OUT NORTH BEFORE CU DEVELOPS FOR THE
AFTERNOON. 12Z RAOBS SHOW MUCH LESS PW TODAY THAN PREVIOUS DAYS...
1.5 INCHES INSTEAD OF 2. HOWEVER...THEY INDICATE THE ATMOS WILL
STILL BE MODERATELY UNSTABLE. DCAPE IS CURRENTLY HIGHER AND IS
FORECAST TO REMAIN HIGHER THAN THE PAST TWO DAYS. LEE TROF IN PLACE
ACROSS THE CWFA AS WELL. THEREFORE...GOING FCST STILL LOOKS GOOD
WITH SCT CONVECTION N AND ISOLATED S. BETTER CHC OF SEVERE AND LESS
CHC OF FLOODING TODAY GIVEN THE MORNING RAOBS.

AS OF 630 AM EDT...WE HAD A LINE OF LIGHT SHOWERS MOVE ACROSS THE
NC/TENN BORDER A COUPLE HOURS AGO AND THEN DISSIPATE AS IT MOVED OVER
THE HIGHER TERRAIN. OTHERWISE...CONDITIONS ARE MOSTLY CALM OVER THE
CWFA WITH TEMPS IN THE LOW 70S. TEMPS SHOULD DROP A DEGREE OR 2 MORE
AS MANY LOCATIONS ARE FREE OF ANY SIG CLOUD COVER. HAVE BEEN SEEING
LOW CIGS AND VISBY AT AVL AND HKY FOR THE PAST COUPLE OF
HOURS...WITH OTHER SITES REMAINING VFR.

PREVIOUS DISCUSSION...
FOR TODAY...THE PERSISTENT UPPER RIDGE TO OUR WEST WILL BEGIN TO
FLATTEN AND SLOWLY DRIFT EASTWARD. THE UPPER TROF THAT HAS BEEN
NEARLY STALLED OVER THE FCST AREA WILL FINALLY BEGIN TO LIFT AND
LEAVING A MORE FLAT UPPER PATTERN OVER THE REGION. AT THE SFC..THE
BERMUDA HIGH WILL SPREAD FARTHER WESTWARD KEEPING SWLY FLOW OVER THE
AREA. THESE PATTERN CHANGES ARE MORE CONSISTENT WITH A TYPICAL
SUMMER TIME SCHEME. ALTHOUGH THERE WILL BE AMPLE INSTABILITY OVER
THE REGION...OVERALL LOW TO MID LVL MOISTURE SHOULD DECREASE
TODAY/TONIGHT WITH PRECIP WATER FALLING ABOUT 0.5 INCHES. I TRIMMED POPS BACK
TO A SOLID CHANCE FOR DIURNAL TSRA OVER THE NC MTS AND FOOTHILLS AND
A SLIGHT CHANCE ELSEWHERE. HIGH TEMPS SHOULD REBOUND BACK UP OVER 90
WITH SOME LOCATIONS LIKELY APPROACHING 95 DEGREES THIS AFTERNOON.

&&

.SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...
AS OF 300 AM SUNDAY...REGION REMAINS BETWEEN AN UPPER RIDGE TO THE W
AND A TROF OFF THE E COAST MON-TUE...WITH A SERIES OF WEAK UPPER
LEVEL DISTURBANCES MOVG THRU RELATIVELY LGT WNW FLOW ALOFT. ALTHOUGH
SFC HIGH PRES TO THE SE WILL RIDGE UP OVER THE AREA...WITH DEW
POINTS IN THE M60S TO AROUND 70...CAPE VALUES 1500-2000 J/KG AND A
LEE TROF ACROSS THE PIEDMONT...COMBINED WITH DAYTIME HEATING...SCT
LATE DAY SHWRS AND TSTMS ARE EXPECTED BOTH DAYS. USING A MOS BLEND
YIELDED TEMPS A FEW DEG ABOVE AVG.

&&

.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
AS OF 300 AM SUNDAY...MODELS IN FAIR AGREEMENT SHOWING A FRONTAL
BOUNDARY OVER THE OH VALLEY DROPPING S TOWARD THE AREA WED AS AN
UPPER TROF DEEPENS OVER THE MID ATLANTIC REGION...WITH THE FAVORED
ECMWF PUSHING THE FRONT BACK TO THE N THU AS A WEAK UPPER RIDGE
BUILDS IN FROM THE W. ANOTHER UPPER TROF DEVELOPS OVER THE GREAT
LAKES INTO THE MID ATLANTIC FRI-SAT WITH ANOTHER FRONT DROPPING S
INTO THE REGION. WITH CONTINUED HIGH PW VALUES AND GOOD DIURNAL
INSTABILITY...EXPECT SCT CONVECTION EACH DAY. TEMPS WILL REMAIN
ABOVE AVG THRU THE PD.

&&

.AVIATION /15Z SUNDAY THROUGH THURSDAY/...
AT KCLT...STILL EXPECT CONVECTIVE ACTIVITY TO BE SCT THIS AFTERNOON
AND EVENING WITH MORE OF A TYPICAL SUMMERTIME DIURNAL TIMING. VFR
CONDITIONS SHOULD PREVAIL THRU TAF PERIOD. HAVE BACKED OFF TSRA
TEMPO A COUPLE OF HOURS FOR THIS. OTHERWISE...WINDS SHOULD BE
PREDOMINATELY SWLY WITH SCT TO BKN HIGH CLOUDS OVERNIGHT.

ELSEWHERE...CONDITIONS QUICKLY IMPROVING TO VFR THIS MORNING.
CONVECTION COULD DEVELOP A TAD LATER THAN PREV FCST...BUT STILL
EXPECTING SCT NC AND ISOLATED SC.THINGS SHOULD CLEAR OUT AGAIN
OVERNIGHT WITH MOSTLY CALM CONDITIONS AND THE POTENTIAL FOR
OVERNIGHT FOG AND LOW CIGS.

OUTLOOK...FOR THE START OF THE WORK WEEK TYPICAL MID-SUMMER WEATHER
IS ANTICIPATED...WITH ISOLATED TO WIDELY SCATTERED AFTERNOON/EVENING
THUNDERSTORMS. MORNING FOG/STRATUS WILL ALSO BE POSSIBLE...MAINLY IN
THE MOUNTAIN VALLEYS.

AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE
PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE
CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)...

WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.

&&

SYNOPSIS...RB
NEAR TERM...JPT/RWH
SHORT TERM...RB
LONG TERM...RB
AVIATION...JPT/RWH

Hazardous weather outlook, Jul 22, 4:40 AM EDT, 9 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
440 AM EDT SUN JUL 22 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-230845-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
440 AM EDT SUN JUL 22 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE OVER THE AREA...
MAINLY THIS AFTERNOON AND EARLY EVENING. THE MAIN THREATS WILL BE
STRONG GUSTY WINDS...CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY
RAINFALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, Jul 22, 1:15 PM EDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
115 PM EDT SUN JUL 22 2012

NCZ036-221745-
IREDELL-
115 PM EDT SUN JUL 22 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN IREDELL COUNTY THROUGH
145 PM EDT...

AT 113 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES EAST OF LOVE VALLEY...OR 15 MILES NORTH
OF STATESVILLE...MOVING SOUTHEAST AT 20 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  I-77...
  HARMONY...

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE EXPECTED
WITH THIS STORM.

LAT...LON 3606 8069 3586 8070 3578 8074 3593 8102
      3595 8100 3600 8100 3603 8102 3606 8101

CSH

Special weather statement, Jul 22, 1:23 PM EDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
123 PM EDT SUN JUL 22 2012

NCZ501>504-221745-
BURKE MOUNTAINS-CALDWELL MOUNTAINS-GREATER BURKE-GREATER CALDWELL-
123 PM EDT SUN JUL 22 2012

...STRONG THUNDERSTORMS WILL AFFECT CALDWELL AND NORTHERN BURKE
COUNTIES THROUGH 145 PM EDT...

AT 120 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM PATTERSON TO LENOIR TO TABLE ROCK...
MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO RUTHERFORD
  COLLEGE...LAKE RHODHISS...PATTERSON...KINGS CREEK...VALDESE...
  TABLE ROCK...SAWMILLS...RHODHISS...LENOIR...
  ICARD...HUDSON...HILDEBRAN...  GRANITE FALLS...GAMEWELL...DREXEL...
  CONNELLY SPRINGS...COLLETTSVILLE AND CAJAH'S MOUNTAIN.

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE EXPECTED
WITH THESE STORMS.

LAT...LON 3608 8141 3601 8132 3592 8135 3588 8133
      3577 8136 3565 8146 3586 8187 3590 8179
      3592 8175 3593 8178 3596 8171 3605 8170
      3609 8144

CSH

Special weather statement, Jul 22, 1:48 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
148 PM EDT SUN JUL 22 2012

NCZ035-056-501-502-504-221830-
ALEXANDER-CALDWELL MOUNTAINS-CATAWBA-GREATER BURKE-GREATER CALDWELL-
148 PM EDT SUN JUL 22 2012

...STRONG THUNDERSTORMS WILL AFFECT BURKE...NORTHERN CATAWBA...
SOUTHERN CALDWELL AND SOUTHWESTERN ALEXANDER COUNTIES THROUGH 230 PM
EDT...

AT 143 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES SOUTHWEST OF
KINGS CREEK TO 4 MILES SOUTHEAST OF TABLE ROCK...MOVING SOUTHEAST AT
15 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  MORGANTON...
  HUDSON...
  ELLENDALE...
  RUTHERFORD COLLEGE...
  CONNELLY SPRINGS...
  ICARD...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

LAT...LON 3589 8112 3563 8152 3581 8186 3587 8178
      3589 8173 3591 8174 3592 8174 3602 8157

JOH

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 1:15 PM EDT	Special Weather Statement	GSP	Iredell	30 min
Jul 22, 1:23 PM EDT	Special Weather Statement	GSP	Caldwell	22 min
Jul 22, 1:54 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Burke, Caldwell, Catawba	51 min
Jul 22, 1:59 PM EDT	Special Weather Statement	GSP	Buncombe	46 min
Jul 22, 2:42 PM EDT	Special Weather Statement	GSP	Alexander	48 min
Jul 22, 3:20 PM EDT	Special Weather Statement	GSP	McDowell	25 min
Jul 22, 4:03 PM EDT	Special Weather Statement	GSP	McDowell	27 min
Jul 22, 4:06 PM EDT	Severe Thunderstorm Warning	GSP	McDowell, Rutherford	33 min
Jul 22, 5:18 PM EDT	Special Weather Statement	GSP	Polk	27 min
Jul 22, 5:50 PM EDT	Special Weather Statement	GSP	Transylvania	25 min

Nearby

Special Weather Statements in North Carolina, 2012 Every special weather statement in 2012

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.