Greater Pee Dee Skywarn Group

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Reporting Procedures


Amateur Radio...

AMATEUR RADIO FREQUENCIES USED BY ILM-SKYWARN ---
Wilmington, N.C.:  145.170 MHz, negative offset, 88.5 access tone.  Glenn Cox, KE4BMY, Ric Tharrington KD4JRX.
Myrtle Beach, S.C.:  146.655 MHz, negative offset, 123.0 access tone.  Jason Morgan, K4SHP, Mike Leek, W2SWR.
Lumberton, N.C.:  147.045 MHz, positive offset, no access tone.  Christopher Cawley, KK4CSR, Henry McDuffie,N4MCD.
Dillon, S.C.:  146.745 MHz, negative offset, 82.5 access tone.  Sam Smith, K4KNJ. Thomas Lawhon, KK4IOJ

National Weather Service...
Click  -HERE-   for the SKYWARN reporting procedures sheet from the National Weather Service at Wilmington, N.C.

Other...
National Weather Service Wilmington, N.C., FACEBOOK page.
National Weather Service Wilmington, N.C., TWITTER page.
GPDSkywarn FACEBOOK page.

Call the National Weather Service directly at 1-800-697-3901 only when it is safe to do so.

Reporting Criteria


Summertime SKYWARN Activation’s

HIGHEST PRIORITY REPORTS:

  • Tornado or waterspout


HIGH PRIORITY REPORTS:

  • T-storm winds 58 MPH or Greater. 58 MPH winds may uproot trees, and cause considerable damage to buildings
  • Hail 3/4 inch in diameter or larger.(a quarter is 1 inch in diameter)
THESE REPORTS ARE CLASSIFIED BY NWS TO BE SEVERE.

OTHER PRIORITY REPORTS:

  • Funnel or Wall clouds.
  • T-storm winds of 40-57 MPH. 40 – 57 MPH winds may break twigs off of trees, cause slight damage to buildings, and blow shingles off a roof
  • T-storm wind that causes damage topower lines, trees or houses.
  • Any size hail
  • Rainfall in excess of 1″ per hour.
  • Rainfall in excess of 2″ in a 12 hour period with every additional inch reported for the duration of the event
  • Rise of Streams Rivers or Ocean to near flood stage.
  • Any flooding of roads which make them impassable, river/stream flooding, flooding to houses or businesses causing damage.
  • Known deaths injuries or damage due to lightning.
  • Any other damage or unusual activity in the storm.
Additional Guidelines for Tropical Storms and Hurricanes:

REPORT ONLY:

  • Wind gusts of 58 MPH or Greater.
  • Rainfall amounts every two inches.
  • Any KNOWN storm surge inundation of coastal areas.
  • Peak wind gust for the entire storm.
  • Lowest barometric pressure and time it occurred.
  • Total storm rainfall amount.
  • Structural and severe tree damage.


Wintertime SKYWARN Activation’s:
  • High Wind Warning
  • Flood Watch/Warning
  • Winter Storm/Blizzard/Heavy Snow or Ice Storm Warning
  • Coastal Flood Warning
  • Reports can also be made for snowfall when an accumulative snow is in progress.
HIGHEST PRIORITY REPORTS:

  • Damaging wind gusts of 58 MPH or greater.
  • Flooding of streams, rivers and urban areas causing damage or roads to be impassable also ice jam flooding.
  • Two inches of rain in a 12 hour period.
  • Icing reports of 1/3″ or greater.
  • Snow reports in approximately two inch intervals and especially when the storm has passed.
OTHER PRIORITY REPORTS:

  • Wind gusts between 40 and 57 MPH.
  • Any changeover in precipitation type (i.e.: Snow to Ice to Rain, Rain to Ice to Snow).
  • Any type of thunderstorm in progress.
  • Rainfall in excess of 1 inch per hour.
  • Any accumulation of snow one inch or greater when none is forecast otherwise snow accumulations in approximately two inch intervals and especially snowfall totals when the storm has passed.
  • Rain when frozen precipitation is forecast.
  • Minor stream or roadway flooding.
  • Blowing and drifts snow closing roads.