Alert archive / Arizona / Flash Flood Warnings in 2000

Flash Flood Warning 1, NWS Phoenix, AZ

June 20, 2000Maricopa County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jun 20, 2000, 3:45 PM MST for Maricopa County, Arizona. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 20, 2000, 3:45 PM MST (22:45 UTC)
Expired: Jun 20, 2000, 4:05 PM MST
In force: 20 min
Issued by: NWS Phoenix, AZ
Area: Whole counties

County Maricopa County, AZ

The nearest sounding before it

Phoenix, AZ (KPSR), launched 12:00Z, 10.8 hours before the alert went out and 49 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2346 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 1314 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KPSR 202242
FFWPSR
AZC013-210005-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
345 PM MST TUE JUN 20 2000

THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL MARICOPA COUNTY IN CENTRAL ARIZONA

* UNTIL 505 PM MST

* AT 340 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAIN EXTENDING FROM WICKENBURG TO NEW
  RIVER...INCLUDING THE AREA AROUND LAKE PLEASANT. STORMS WERE
  MOVING SLOWLY WEST.
*

MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN.

HV

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 9:44 PM MST	Severe Thunderstorm Warning	PSR	Pinal	36 min
Jun 20, 12:34 PM MST	Severe Thunderstorm Warning	PSR	Pinal	61 min
Jun 20, 1:14 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	61 min
Jun 20, 1:33 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	67 min
Jun 20, 3:09 PM MST	Severe Thunderstorm Warning	PSR	Maricopa	61 min
Jun 20, 4:05 PM MST	Severe Thunderstorm Warning	PSR	La Paz	75 min

Nearby

Flash Flood Warnings in Arizona, 2000 Every flash flood warning in 2000

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.