Alert archive / Arizona / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 19, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Aug 28, 1986, 6:40 PM MST for Maricopa County, Arizona. It was in force for 80 min. 2 reports 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
- Aug 28, 1986, 6:40 PM MST (01:40 UTC)
- Expired
- Aug 28, 1986, 8:00 PM MST
- In force
- 80 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 28, 7:10 PM MST | Thunderstorm Wind 0 | Maricopa, AZ | |
| Aug 28, 8:00 PM MST | Thunderstorm Wind 61 | 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, 1.7 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
- 1284 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1130 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Aug 28, 3:12 PM MST, 3 hours 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 310 PM MST THU AUG 28 1986 AT 300 PM MST RADAR AND SATELLITE PHOTOS SHOWED TWO MAIN AREAS OF THUNDERSTORMS DEVELOPING OVER ARIZONA. ONE AREA IS IN A LINE FROM THE GRAND CANYON SOUTHWEST TO THE COLORADO RIVER JUST NORTH OF YUMA. THESE STORMS..SOME HEAVY..ESPECIALLY IN THE AREA NORTHWEST OF PRESCOTT..ARE MOVING TO THE WEST NORTHWEST. THE SECOND AREA OF THUNDERSTORMS IS DEVELOPING IN SOUTHEAST ARIZONA GENERALLY IN A LINE FROM THE HAYDEN/WINKLEMAN AREA SOUTHWESTWARD INTO PIMA COUNTY JUST WEST OF TUCSON. THESE STORMS ARE ALSO MOVING TO THE WEST NORTHWEST. SEVERAL THUNDERSTORMS HAVE ALSO DEVELOPED NORTHWEST OF PHOENIX IN THE VICINITY OF LAKE PLEASANT..AS WELL AS SOUTHEAST OF THE CITY IN THE FLORENCE AREA. THUNDERSTORMS MAY MOVE INTO THE PHOENIX METROPOLITIN AREA FROM THE SOUTHEAST LATER THIS EVENING. > ANY OF THESE THUNDERSTORMS MAY BE POTENTIALLY DANGEROUS. THEY MAY PRODUCE STRONG GUSTY WINDS..BLOWING DUST..DANGEROUS LIGHTNING..HAIL.. OR HEAVY RAIN WITH LOCAL FLOODING. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD BE ALERT TO DEVELOPING WEATHER CONDITIONS. YOU SHOULD PREPARE TO TAKE SHELTER IF THUNDERSTORMS APPROACH YOUR AREA. FURTHER STATEMENTS WILL BE ISSUED AS CONDITIONS WARRENT. HOADLEY 8/28 1510
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:50 PM MST | Flash Flood Warning | PSR | Maricopa | 6 hr |
| Aug 28, 8:50 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 70 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 1986Every severe thunderstorm warning in 1986
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.