Alert archive / North Carolina / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 6, NWS Greenville-Spartanburg, SC

February 22, 2003Union County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Feb 22, 2003, 11:21 AM EST for Union County, North Carolina. It was in force for 39 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: Feb 22, 2003, 11:21 AM EST (16:21 UTC)
Expired: Feb 22, 2003, 12:00 PM EST
In force: 39 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Union County, NC

The radar

The Columbia radar (KCAE), 128 km from the middle of the area, began a volume at 16:23 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 22, 9:45 AM EST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.4 hours before the alert went out and 134 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 483 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 705 m²/s²
0-3 km storm-relative helicity: 845 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

466 
WUUS52 KGSP 221621
SVRGSP
NCC179-221700-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1121 AM EST SAT FEB 22 2003

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  UNION COUNTY IN THE PIEDMONT OF NORTH CAROLINA

* UNTIL NOON EST

* AT 1121 AM EST...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM 6 MILES SOUTHWEST OF MONROE...MOVING NORTHEAST AT 45
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WINGATE AT 1125 AM EST.
  MARSHVILLE AT 1130 AM EST.
  NEW SALEM AT 1140 AM EST.

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY THUNDERSTORM.

LAT...LON 3499 8072 3482 8073 3481 8033 3519 8028
          3518 8046

$$

MOORE

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 22, 9:59 AM EST, 1 hour 22 minutes earlier.

Area forecast discussion, Feb 22, 9:59 AM EST, 1 hour 22 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
959 AM EST SAT FEB 22 2003

UPDATED FOR TORNADO WATCH CLT METRO AREA...ASSOCAITED WITH LINE OF
CONVECTION.

FCSTID =    7
GSP   66  42  58  37 /  90  40   0  20
AND   66  42  58  37 /  90  40   0  20
CLT   66  42  57  36 /  90  40   0  20
HKY   59  39  52  34 /  90  40  10  20
AVL   62  38  49  32 /  90  40  10  20

.GSP...
GA...NONE.
NC...FLOOD WATCH FOR TODAY FOR ZONES NCZ051>052...NCZ058>059...
NCZ062>064.
TORNADO WATCH THROUGH 4 PM FOR ZONES NCZ057-071>072-082.
SC...TORNADO WATCH THROUGH 4 PM FOR ZONES SCZ009-014.

O7

Hazardous weather outlook, Feb 22, 6:19 AM EST, 5 hours 2 minutes before

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-221300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
619 AM EST SAT FEB 22 2003

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

.DAY ONE...WIDESPREAD SHOWERS AND THUNDERSTORMS WILL AFFECT THE
WESTERN CAROLINAS AND NORTHEAST GEORGIA. SOME OF THE STORMS WILL
LIKELY BE SEVERE...ESPECIALLY LATE THIS MORNING INTO THIS AFTERNOON.
HEAVY RAINFALL COULD ALSO PRODUCE ISOLATED FLASH FLOODING. WINDS
WILL REMAIN STRONG AFTER THE PRECIPIATION ENDS TONIGHT...ESPECIALLY
ACROSS THE MOUNTAINS. FOR MORE INFORMATION...SEE CAESPSGSP.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED BY EARLY AFTERNOON...
ESPECIALLY ALONG THE I-85 CORRIDOR.

LANE

In the hours before

Local storm report, Feb 22, 9:51 AM EST, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
951 AM EST SAT FEB 22 2003

TIME(EST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

935 AM     UNION                     SC   .75 INCH HAIL
02/22/03   UNION                          REPORTED AT 911 CENTER

MOORE

Local storm report, Feb 22, 10:42 AM EST, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
1042 AM EST SAT FEB 22 2003

TIME(EST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1020 AM    6 S ROCK HILL             SC   .88 INCH HAIL
02/22/03   YORK                           HAM RADIO OPERATOR
                                          REPORTED NICKEL SIZE HAIL
                                          IN SPRINGDALE NEAR
                                          INTERSECTION OF
                                          INTERSTATE 77 AND HIGHWAY
                                          21.

RWH

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 22, 10:31 AM EST	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg, Union	44 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2003 Every severe thunderstorm warning in 2003

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.