Alert archive / Arizona / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 4, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 10, 1990, 7:01 PM MST for Maricopa County, Pinal County, Arizona. It was in force for 119 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 10, 1990, 7:01 PM MST (02:01 UTC)
- Expired
- Jul 10, 1990, 9:00 PM MST
- In force
- 119 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
Counties Maricopa County, AZ, Pinal County, AZ
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 10, 9:00 PM MST | Thunderstorm Wind 0 | Maricopa, AZ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 2.0 hours before the alert went out and 143 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 357 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 2256 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHX 110206 RRA SVRPHX AZC013-021-110400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PHOENIX ARIZONA 701 PM MST TUE JUL 10 1990 THE NATIONAL WEATHER SERVICE IN PHOENIX ARIZONA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM MST FOR THE FOLLOWING LOCATIONS...S... IN SOUTH CENTRAL ARIZONA ...EASTERN MARICOPA COUNTY...NORTH CENTRAL PINAL COUNTY THI INCLUDES THE GREATER PHOENIX AREA...STRETCHING FROM FLORENCE IN PINAL COUNTY...THROUGH QUENN CREEK...AND TOWARDS THE METROPOLITAN AREA. A LINE OF INTENSE THUNDERSTORMS THAT DEVELOPED OVER THE MOUNTAINS NORTHEAST AND EAST OF THE GREATER PHOENIX AREA WAS MOVING TOWARDS THE EAST VALLEY. A WIND GUST FRONT FROM THESE THUNDERSTORMS IN EXCESS OF 57 MPH WILL LIKELY SWEEP THROUGH SECTIONS OF THE GREATER PHOENIX WITHIN THE NEXT 2 HOURS. DAMAGING WINDS ARE A POSSIBILITY...ALONG WITH HAIL... AND A MASSIVE DUSTSTORM. SEVERE THUNDERSTORMS CAUSE DAMAGING WINDS...LARGE HAIL AND DEADLY LIGHTNING. MOVE INSIDE A REINFORCED BUILDING OR STORM SHELTER. GO TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS. MOBILE HOMES ARE IN DANGER FROM SEVERE THUNDeERSTORM WINDS... ESPECIALLY IF THEY HAVE NOT BEEN TIED DOWN. FOR YOUR SAFETY...TAKE SHELTER IN A STRONG BUILDING. IF YOUR TRAILER PARK HAS A STORM SHELTER...USE IT.
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, Jul 10, 3:36 PM MST, 3 hours 25 minutes before
AZZALL-110000-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
330 PM MST TUE JUL 10 1990
...THUNDERSTORMS WITH HEAVY RAIN AND HAIL IN PAYSON....
THUNDERSTORMS WITH HEAVY RAIN HAVE BEEN DEVELOPING ALONG THE MOGOLLON
AND WHITE MOUNTAINS THIS AFTERNOON. SOME OF THESE THUNDERSTORMS
ALONG THE RIM NEAR PAYSON... SOUTHEAST TOWARDS THE TOWN OF WHITERIVER
HAVE PRODUCED VERY HEAVY DOWNPOURS.
AT 310 PM AN OBSERVER IN PAYSON REPORTED 1.15 INCHES OF RAIN IN 25
MINUTES ACCOMPANIED BY PEA TO MARBLE SIZED HAILSTONES. THERE WAS RUNOFF
IN THE NEARBY CREEKS... AS WELL AS MINOR STREET FLOODING IN PAYSON.
SCATTERED THUNDERSTORMS PRODUCING HEAVY RAINS ARE EXPECTED TO CONTINUE
TO DEVELOP THROUGHOUT THE AFTERNOON AND EVENING HOURS. MOTORISTS
DRIVING NEAR THE BASE OF THE MOGOLLON RIM AND WHITE MOUNTAINS...
ESPECIALLY HIGHWAYS 60... 73... AND 87 SHOULD BE ALERT FOR HEAVY RAINS
IN THE VICINITY THAT MAY CAUSE WASHES AND CREEKS TO RUN ACROSS THE
ROADWAYS.
VASQUEZSpecial weather statement, Jul 10, 6:29 PM MST, 32 minutes before
AZZALL-110400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 630 PM MST TUE JUL 10 1990 ...A LINE OF THUNDERSTORMS IS MOVING TOWARD THE PHOENIX AREA... AT 600 PM MST, NATIONAL WEATHER SERVICE RADAR AT SKY HARBOR IN PHOENIX INDICATED A LINE OF THUNDERSTORMS IN THE SALT RIVER LAKES RECREATIONAL AREA JUST SOUTHWEST OF THE MAZATZAL MOUNTAINS INCLUDING FOUR PEAKS TO THE SUPERSTITION MOUNTAINS. SOME OF THESE THUNDERSTORMS CONTAINED VERY HEAVY RAIN AND POSSIBLE HAIL. THE THUNDERSTORMS ARE MOVING FROM THE NORTHEAST TOWARD THE SOUTHWEST AT 15 MILES PER HOUR. A DUST STORM WITH VERY STRONG GUSTY DAMAGING WINDS AND DENSE BLOWING DUST IS POSSIBLE IN THE GREATER PHOENIX AREA INCLUDING APACHE JUNCTION BY 700 OR 730 PM MST. THUNDERSTORMS WITH DANGEROUS CLOUD TO GROUND LIGHTNING ARE EXPECTED TO FOLLOW THE DUST STORM AND REACH THE PHOENIX AREA BY 730 OR 8 PM MST. LOCALLY HEAVY RAIN AND HAIL ARE POSSIBLE WITH THE THUNDERSTORMS. IF YOU ARE DRIVING IN THE SOUTHCENTRAL DESERTS INCLUDING PHOENIX THIS EVENING, BE ALERT FOR SUDDEN REDUCTIONS IN VISIBILITY DUE TO DENSE BLOWING DUST OR VERY HEAVY RAIN. IF VISIBILITY BECOMES VERY POOR, PULL OFF TO THE SIDE OF THE ROAD, TURN YOUR LIGHTS OFF AND TAKE YOUR FOOT OFF THE BRAKE. STREET AND LOCAL HIGHWAY FLOODING IS POSSIBLE IN THE SOUTHCENTRAL DESERTS INCLUDING PHOENIX THIS EVENING. IF YOU OBSERVE THREATENING WEATHER INCLUDING CLOUD TO GROUND LIGHTNING, MOVE TO A SAFE PILACE INDOORS. CRAIG ELLIS
Nearby
Severe Thunderstorm Warnings in Arizona, 1990Every severe thunderstorm warning in 1990
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.