Disruption to Primary Electrical and Phone Services
Defined as:
disruption to line-connected electrical service and line-connected phone service.
NOTE: Although used by many as a primary service, wireless phone service is not considered a primary phone service for this purpose.
Flash Flooding
Defined as:
- major structural damage / evacuations
- river banks broken, water out of bank
- roads, bridges, or railroads washed out
Flooding - Minor, Inconvenient Urban / Small Stream
Defined as:
- non-life-threatening / non-damaging water over curb
- some water out of banks
- some water on the roads
Fog Conditions
Defined as fog that produces visibility of less than ¼ mile in daylight.
High Snowfall Rates
Defined as snowfall rates exceeding 3” every 6 hours. Include the measurement period as well (i. e., “4.25 inches measured between 8am and 10:30am”)
Ice Damage
Defined as visible ice damage to buildings, structures and power lines.
Ice Jams on Rivers
Defined as a disruption or diversion to normal river flow as a result of accumulated ice.
Other Damage to Trees and Power Lines
Defined as visible damage to trees and power lines.
State and County Highway Closures
Defined as closures on roads due to snow or ice.
Sustained Winds and Wind Gusts 50 Mph or Greater
Defined as sustained winds or wind gusts that meet or exceed the indicated threshold. Indicate if “Measured” with instrument or “Estimated” per established guidelines (“Measured” is preferred.)
Thunder-Snow
Defined as thunder heard in the presence of snow showers.
Whiteout Conditions
Defined as wind driven snow that result in zero or near-zero visibility in daylight
Note: All convective weather criteria remain valid during the winter