Mon May 20 16:13:26 EDT 2024

Surprise Valley California-Eastern Lassen County-
Northern Washoe County-
113 PM PDT Mon May 20 2024

.TONIGHT...
* Sky/Weather........Clear. 
* Min Temperature.... 
*   Valleys..........29-39. 
*   Mid Slope........31-41. 
*   24 hr trend......Little change. 
* Max Humidity....... 
*   Valleys..........47-57%. 
*   Mid Slope........35-45%. 
*   24 hr trend......Little change. 
* 20-Foot Winds...... 
*   Valleys/Slope....North winds 9 to 15 mph. Gusts to 25 mph in the 
                     evening. 
*   Ridge Top........North winds 10 to 15 mph. 
* Haines Index.......2. 
* LAL................1. 
* Chc Wetting Rain...0%. 
* Mixing Height......4400-5400 ft agl decreasing to 600-700 ft agl 
                     after midnight. 
* Transport Winds....North 10 to 15 mph. 
* Ventilation........Excellent decreasing to poor after midnight. 

.TUESDAY...
* Sky/Weather........Sunny. 
* Max Temperature.... 
*   Valleys..........64-73. 
*   Mid Slope........60-68. 
*   24 hr trend......7 degrees warmer. 
* Min Humidity....... 
*   Valleys..........9-19%. 
*   Mid Slope........12-20%. 
*   24 hr trend......Little change. 
* 20-Foot Winds...... 
*   Valleys/Slope....Upslope 4 to 8 mph. 
*   Ridge Top........Northeast winds 10 to 15 mph shifting to the 
                     southwest in the afternoon. 
* Haines Index.......2-3. 
* LAL................1. 
* Chc Wetting Rain...0%. 
* Mixing Height......2400-3400 ft agl increasing to 6800-7400 ft 
                     agl in the afternoon. 
* Transport Winds....Light winds. 
* Ventilation........Fair increasing to very good in the afternoon. 

.TUESDAY NIGHT...
* Sky/Weather........Partly cloudy. Slight chance of showers. 
* Min Temperature.... 
*   Valleys..........36-46. 
*   Mid Slope........36-45. 
* Max Humidity....... 
*   Valleys..........61-71%. 
*   Mid Slope........52-62%. 
* 20-Foot Winds...... 
*   Valleys/Slope....Downslope 2 to 5 mph becoming west 7 to 12 mph 
                     in the late evening and overnight. 
*   Ridge Top........West winds 10 to 20 mph with gusts to 30 mph. 
* Haines Index.......3. 
* LAL................1. 
* Chc Wetting Rain...5%. 
* Mixing Height......3200-4200 ft agl decreasing to 600-800 ft agl 
                     after midnight. 
* Transport Winds....West 10 to 15 mph. 
* Ventilation........Excellent decreasing to marginal after 
                     midnight. 

.WEDNESDAY...
* Sky/Weather........Sunny. 
* Max Temperature.... 
*   Valleys..........65-75. 
*   Mid Slope........59-69. 
* Min Humidity....... 
*   Valleys..........14-24%. 
*   Mid Slope........16-24%. 
* 20-Foot Winds...... 
*   Valleys/Slope....Northwest winds 7 to 12 mph increasing to west 
                     15 to 25 mph with gusts to 40 mph. 
*   Ridge Top........West winds 20 to 30 mph. Gusts to 35 mph 
                     increasing to 45 mph late in the afternoon. 
* Haines Index.......2. 
* LAL................1. 
* Chc Wetting Rain...0%. 
* Mixing Height......1200-1700 ft agl increasing to 6700-7700 ft 
                     agl in the afternoon. 
* Transport Winds....Light winds becoming west 20 to 30 mph in the 
                     afternoon. 
* Ventilation........Fair increasing to excellent in the afternoon. 


.Extended...
.WEDNESDAY NIGHT...Clear. Lows 27-37. Northwest winds 20 to 30 mph
decreasing to 5 to 10 mph. 
.THURSDAY...Clear. Highs 61-71. Lows 27-37. Slope winds. 
.FRIDAY...Partly cloudy. Highs 69-79. Lows 34-44. Southwest winds
10 to 15 mph. 
.SATURDAY...Clear. Highs 64-74. Lows 33-43. West winds 10 to 20 mph.
.SUNDAY...Clear. Highs 69-79. Lows 33-43. 
.MEMORIAL DAY...Sunny. Highs 75-85.