Sunday, August 8, 2010

August Heat 

                                                                   


8:50 AM SUN 8.08.2010
Dangerously hot conditions will being Monday into Thursday for the Eastern U.S. and Mid-West. Temperatures in this time period will range from 90-100 if not higher. Mix this with dew points in the upper 60's and low 70's and it begins to feel like 100+. Entire states are under Excessive Heat Warnings and Heat advisories on the current NWS map. In areas noted by orange on this map, heat indices will range from 100°  to 110° in daylight hours this weekend. The culprit is a high pressure ridge across the southeast, now building northward. The ridge looks to peak Wednesday and begin to be replaced by Friday.
While we recognize many workers in public safety and entertainment are required to be outdoors, including police, fire, utility crews and even amusement park staff - we urge everyone to stay hydrated, take frequent breaks and do not over-exert. (Forecaster Zak Brisko)

HEAT INDEX / HEALTH RISKS   Important heat safety information from the National Weather Service, and a source for our heat index level system.

Level 1 Heat Index of 80° - 90°: LOW RISK FATIGUE POSSIBLE WITH PROLONGED EXPOSURE AND/OR PHYSICAL ACTIVITY.

Level 2 Heat Index of 90°- 105°: MODERATE RISK OF HEATSTROKE. HEAT CRAMPS AND HEAT EXHAUSTION WITH PROLONGED EXPOSURE AND/OR PHYSICAL ACTIVITY.

Level 3 Heat Index of 105°- 130°: HIGH RISK OF HEATSTROKE. HEAT CRAMPS OR HEAT EXHAUSTION LIKELY WITH PROLONGED EXPOSURE AND/OR PHYSICAL ACTIVITY.

Level 4 Heat Index of 130° or higher: HEATSTROKE LIKELY.

OUR FORECASTED HEAT INDEX LEVELS: MID-ATLANTIC 
Norfolk, VA: 2 | Charlottesville, VA: 2 | Washington DC: 2
Frederick, MD: 2 | Philadelphia, PA: 2 | Harrisburg, PA: 2

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