The most powerful low pressure system in Arizona history is generating havoc in the state tonight, as a powerful cold front sweeps through. Prescott
last hour recorded sustained winds at 52 mph, gusting to 67 as the cold front passed. Visibility was zero in blowing dust on I-10 connecting Phoenix and Tucson, and a cooperative observer in Apache Junction between Phoenix and Tucson reported sustained winds of hurricane force, 74 mph. A tornado touched down just west of Blythe, on the Arizona California border, at 4:31 pm MST. The twister crossed I-10, blowing three semi trucks over, blowing the roofs off houses, and downing power lines. I-10 has been closed until further notice, according to media reports
Radar image of Arizona's nastiest cold front in recorded history approaching Phoenix.
This past hour, Phoenix obliterated their all-time record low pressure, set in 1902. The old record was 29.32",
and they are now at 29.22",
with the pressure still falling. Flagstaff has also beaten their all-time low pressure record
, which was 29.15", set in 1937. The pressure has fallen to 29.13" so far. Yuma also set a new record, 29.15",
compared to the old record of 29.37". At 4:41 PM today, Las Vegas set a new record of 29.03 inches. This crushed the all-time record low sea level pressure of 29.17 inches set in December 1949. Fresno, Bakersfield, Eureka, and San Diego have also set new all-time low pressure records today.
Links to follow tonight:Severe Weather Page
.Interactive Tornado Map
.Arizona Current Conditions
I'll have a full update on Friday morning.