Alert archive / Arizona / Flash Flood Warnings in 1986

Flash Flood Warning 8, NWS Phoenix, AZ

August 29, 1986Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Aug 29, 1986, 10:55 PM MST for Maricopa County, Arizona. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Aug 29, 1986, 10:55 PM MST (05:55 UTC)
Expired
Aug 30, 1986, 12:00 AM MST
In force
65 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 00:00Z, 5.9 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.

Skew-T log-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 1986-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 494 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 1986-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
494 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1392 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 6:00 PM MSTFlash Flood WarningPSRGila2 hr
Aug 29, 10:25 PM MSTFlash Flood WarningPSRPinal95 min
Aug 29, 10:25 PM MSTSevere Thunderstorm WarningPSRPinal95 min
Aug 29, 10:55 PM MSTSevere Thunderstorm WarningPSRMaricopa65 min

Nearby

Flash Flood Warnings in Arizona, 1986Every flash flood 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; the sounding from the Mesonet's radiosonde archive.