Dangerous Heat and Humidity Building from the Plains to the East Coast
A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation.
Hazardous Weather Conditions
High and low forecast temperature values represent air temperature.
Last Update: 6:03 am EDT Jul 18, 2019
Forecast Valid: 9am EDT Jul 18, 2019-6pm EDT Jul 24, 2019
Winds and seas higher in and near tstms.
- This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
- The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.