Alert archive / Arizona / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 110, NWS Phoenix, AZ

December 21, 1997Yuma County, Arizona

NWS Phoenix, AZ issued this severe thunderstorm warning at Dec 21, 1997, 4:23 PM MST for Yuma County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 21, 1997, 4:23 PM MST (23:23 UTC)
Expired
Dec 21, 1997, 6:25 PM MST
In force
2 hr
Issued by
NWS Phoenix, AZ
Area
Whole counties

County Yuma County, AZ

The radar

The Yuma radar (KYUX), 77 km from the middle of the area, began a volume at 23:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The text

As transmitted, in the capitals the NWS used until 2016.

652 
WUUS1 KPHX 212324 RRA
SVRPHX
AZC027-220125-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
423 PM MST SUN DEC 21 1997

*  SEVERE THUNDERSTORM AND FLASH FLOOD WARNING FOR
   WESTERN YUMA COUNTY IN SOUTHWESTERN ARIZONA

*  UNTIL 625 PM MST

*  SOME LOCATIONS AFFECTED
   COMMUNITIES ALONG INTERSTATE 8 BETWEEN TACNA AND YUMA
 
*  AT 420 PM MST RADAR DETECTED A SEVERE STORM SOUTHEAST OF YUMA
MOVEMENT WAS TO THE NORTHEAST AT 20 MPH. IN ADDITION...RADAR
ESTIMATED RAINFALL RATES OF OVER ONE INCH PER HOUR WITH THIS AND
NEARBY STORMS. THUS... FLASH FLOODING IS OCCURRING OR IMMINENT WITH
THESE STORMS.

HAIL IN EXCESS OF 3/4 INCHES IN DIAMETER IS LIKELY WITH THIS STORM.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Dec 21, 2:43 PM MST, 1 hour 40 minutes before
AZZALL-221130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
245 PM MST SUN DEC 21 1997

...HOLIDAY WEATHER OUTLOOK FOR ARIZONA CHRISTMAS DAY...

A COLD WEATHER DISTURBANCE WILL BE OVER THE STATE ON CHRISTMAS
DAY...AND FRIDAY. AS A RESULT SKIES WILL BE MOSTLY CLOUDY...WITH A
CHANCE OF DESERT RAIN AND MOUNTAIN SNOW BOTH DAYS. OVERNIGHT LOWS
WILL RANGE FROM THE TEENS IN THE MOUNTAINS...TO THE LOWER OR MIDDLE
40S AT THE WARMER DESERT LOCATIONS. AFTERNOON HIGHS CHRISTMAS DAY
WILL RANGE FROM AROUND 30 DEGREES IN THE MOUNTAINS TO AROUND 60 ON
THE DESERT...PROBABLY A FEW DEGREES COOLER FRIDAY.

PERFREMENT
Special weather statement, Dec 21, 2:45 PM MST, 1 hour 38 minutes before
AZZALL-221130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
245 PM MST SUN DEC 21 1997

...HOLIDAY WEATHER OUTLOOK FOR ARIZONA CHRISTMAS DAY...

A COLD WEATHER DISTURBANCE WILL BE OVER THE STATE ON CHRISTMAS
DAY...AND FRIDAY. AS A RESULT SKIES WILL BE MOSTLY CLOUDY...WITH A
CHANCE OF DESERT RAIN AND MOUNTAIN SNOW BOTH DAYS. OVERNIGHT LOWS
WILL RANGE FROM THE TEENS IN THE MOUNTAINS...TO THE LOWER OR MIDDLE
40S AT THE WARMER DESERT LOCATIONS. AFTERNOON HIGHS CHRISTMAS DAY
WILL RANGE FROM AROUND 30 DEGREES IN THE MOUNTAINS TO AROUND 60 ON
THE DESERT...PROBABLY A FEW DEGREES COOLER FRIDAY.

PERFREMENT

The office that day

Everything else NWS Phoenix, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 21, 4:23 PM MSTFlash Flood WarningPSRYuma2 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.