Alert archive / Arizona / Flash Flood Warnings in 1989

Flash Flood Warning 10, NWS Phoenix, AZ

August 15, 1989Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Aug 15, 1989, 10:03 PM MST for Maricopa County, Arizona. It was in force for 117 min.

The area

The counties it named.

The facts

Issued
Aug 15, 1989, 10:03 PM MST (05:03 UTC)
Expired
Aug 16, 1989, 12:00 AM MST
In force
117 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, 5.1 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 1989-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 329 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 1989-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
329 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
2962 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
3 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 15, 10:03 PM MSTFlash Flood WarningPSRYavapai117 min
Aug 15, 10:03 PM MSTSevere Thunderstorm WarningPSRMaricopa
Aug 15, 11:59 PM MSTFlash Flood WarningPSRMaricopa61 min
Aug 15, 11:59 PM MSTSevere Thunderstorm WarningPSRMaricopa61 min
Aug 16, 12:43 AM MSTFlash Flood WarningPSRMaricopa2 hr

Nearby

Flash Flood Warnings in Arizona, 1989Every flash flood warning in 1989

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.