Afghan Region Weather Hazards Threshold Levels
- High Winds: 25-50 kts (45-90 km/hr) lowlands, >50 kts (90 km/hr)
- Extreme Temps: <0F (-18C), >90F (32C)
- Extreme Windchill: < -18F (-28C), <-40F (-40C)
         mention in text
- Heavy Precip: > 1 inch (25 mm) in 24 hours
- Snowfall: > 10 inches (250 mm) in 24 hours
- Visibility (desired): Widespread valley fog, near 0 vis, Mountains obscured
- Dust storms: Combo of dryness and wind SW Afghan
         surface winds 15-25 kts (25-45 km/hr)
             moderate
         > 25 kts (45 km/hr)
             heavy
- Ice storms (desired)
- Strong Thunderstorms >35kts (65 km/hr), >½ inch (125 mm) hail
- Long Term Drought or short-term relief
- Favorable Weather
The following graphic indicates standard UN geographic zones:
Explanation:
The Weekly Afghanistan Weather Hazards Assessment product was originally created to help support
USAF activities within the region, but it has evolved into a humanitarian-oriented document. Authors at NOAA's
Joint Agricultural Weather Facility use information from the Climate Prediction Center, Air Force Weather Agancy,
USAID, and FEWS-NET to create a weekly updating weather and climate forecast for Afghanistan and the immediately
surrounding area. Following a Tuesday weather briefing, the authors compile relevant information into a draft
document, submit it for comments, and disseminate the final product every Wednesday. The purpose of the product
is to provide short to medium term forecasts (1-7 days) for adverse weather conditions, as well as to update the
hydrological climatic conditions, in relation to possible humanitarian activities in the region.
|