It appears to be moving northwestward across the state today. Steering flow appears to be southeasterly to southwesterly across much of the state today suggesting that stroms developing along Rim will encounter difficultly moving down into the lower terrain. Situation could be helped by the shortwave, but outlook is bleak for storms in the Valley this afternoon and evening in spite of the unstable air mass surrounding us. There is a very pronounced confluence zone at all levels over the northwest part of the state this morning. P chart of the 12 UTC sounding from Luke Air Force Base on August 27, 1994.
Wind speeds are in knots.
The small box indicates the location of Phoenix, and the Salt and Verde River Basins are outlined. Luke carried thunder and gusts to over 35 kts as these storms approached, but storms did not continue into the metro area. Two surges of cool outflow entered the Valley from the northeast and northwest, lowering temperatures 8-12deg. F behind them, but neither surge produced strong winds across the central portion of the metro area. Several brief showers developed along the intersection of the gust fronts, leading to a sprinkle at Phoenix but no significant weather in the Valley.