Alert archive / Arizona / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 2, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at May 14, 1987, 3:45 PM MST for Maricopa County, Arizona. It was in force for 75 min.
The area
The counties it named.
The facts
- Issued
- May 14, 1987, 3:45 PM MST (22:45 UTC)
- Expired
- May 14, 1987, 5:00 PM MST
- In force
- 75 min
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 12:00Z, 10.8 hours before the alert went out and 198 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2353 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KPHX 142245
SVRPHX
AZC013-150045-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHOENIX ARIZONA
345 PM MST THU MAY 14 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 545 PM MST FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH CENTRAL ARIZONA
...EASTERN MARICOPA
A LARGE INTENSE THUNDERSTORM OVER THE MOUNTAINS NORTH OF PHOENIX IS
MOVING SOUTHWARD TOWARD THE CITY. THERE HAVE BEEN SEVERAL REPORTS OF
HAIL...STRONG WINDS AND HEAVY RAIN...AND AT LEAST ONE REPORT OF A
SMALL FUNNEL CLOUD.
THE STORM IS MOVING SOUTH AROUND 10 MPH AND A DUST STORM IS
DEVELOPING AHEAD OF IT. THE DUST SHOULD MOVE THROUGH THE METROPOLITAN
AREA BEFORE 430 PM...FOLLOWED BY VERY STRONG...POSSIBLY DAMAGING
WINDS. THE THUNDERSTORM WILL FOLLOW THE DUST AND MAY ONLY REACH A
PORTION OF THE CITY. BUT IT IS CAPABLE OF CAUSING LARGE HAIL AND
ENOUGH RAIN FOR CONSIDERABLE STREET FLOODING.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
TENHARKELWhat 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, May 14, 3:00 PM MST, 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
300 PM MST THU MAY 14 1987
...THUNDERSTORMS DEVELOPING OVER ARIZONA...
SCATTERED TO NUMEROUS THUNDERSTORMS HAVE BEEN DEVELOPING THROUGHOUT
THE DAY OVER ARIZONA. AT 3 PM SATELLITE PICTURES SHOWED MOST OF THE
ACTIVITY WAS LOCATED OVER THE NORTHERN HALF OF THE STATE FROM THE
WHITE MOUNTAINS AND MOGOLLON RIM NORTHWARD TO THE UTAH BORDER.
THUNDERSTORMS WERE ALSO DEVELOPING OVER THE SOUTHERN AND CENTRAL PART
OF THE STATE AND BY THIS EVENING SHOULD BE NUMEROUS IN COVERAGE.
THE NATIONAL WEATHER SERVICE HAS ALSO RECIEVED SEVERAL REPORTS OF HAIL..
STRONG WINDS AND HEAVY RAIN. SOME OF THE THUNDERSTORMS THIS AFTERNOON
AND EVENING ARE EXPECTED TO BE VERY HEAVY AND PERSON THROUGHOUT THE
STATE SHOULD BE ALERT FOR WEATHER DEVELOPING IN YOUR AREA. THUNDERSTORM
AGAIN COULD CAUSE STRONG DAMAGING WINDS..HAIL..HEAVY BLINDING RAIN..DENSE
BLOWING DUST ON THE DESERTS AND DANGEROUS LIGHTNING. IN ADDITION PERSONS
ENCOUNTERING BAD WEATHER SHOULD TAKE SHELTER AND WAIT OUT THE STORM.
VASQUEZNearby
Severe Thunderstorm Warnings in Arizona, 1987Every severe thunderstorm warning in 1987
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.