Alert archive / Arizona / Flash Flood Warnings in 2000
Flash Flood Warning 17, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Oct 22, 2000, 1:07 AM MST for Maricopa County, Arizona. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 22, 2000, 1:07 AM MST (08:07 UTC)
- Expired
- Oct 22, 2000, 5:00 AM MST
- In force
- 4 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
The radar
The Phoenix radar (KIWA), 77 km from the middle of the area, began a volume at 08:07 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 8.1 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.
- Mixed-layer CAPE
- 108 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1344 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KPSR 220807 FFWPSR AZC013-221300- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 107 AM MST SUN OCT 22 2000 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * FLASH FLOOD WARNING FOR... THE NORTH HALF OF MARICOPA COUNTY IN CENTRAL ARIZONA * UNTIL 600 AM MST * AT 100 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR...INDICATED ADDITIONAL THUNDERSTORMS DEVELOPING OVER THE NORTH HALF OF MARICOPA COUNTY. THESE THUNDERSTORMS ARE EXPECTED TO INCREASE IN AREAL COVERAGE...AND INTENSITY...DURING THE EARLY MORNING HOURS. FLASH FLOODING WAS REPORTED EARLIER THIS EVENING IN THE WICKENBURG AREA...AND FLASH FLOODING OF NORMALLY DRY CREEKS AND WASHES WILL CONTINUE OVERNIGHT. AREAS IN THE FLASH FLOOD WARNING INCLUDE NORTH SCOTTSDALE...CAVE CREEK...CAREFREE...WICKENBURG... NEW RIVER...AND SUNFLOWER. LOCALLY HEAVY RAIN MAY ALSO CAUSE FLOODING OVER MUCH OF THE PHOENIX METRO AREA OVERNIGHT. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! MB
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Phoenix, AZ wrote its last area forecast discussion before this flash flood warning went out at Oct 21, 9:21 PM MST, 3 hours 46 minutes earlier.
Area forecast discussion, Oct 21, 9:21 PM MST, 3 hours 46 minutes before
AZZ020>028-CAZ030>033-221045- SOUTHWEST ARIZONA/SOUTHEAST CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PHOENIX AZ 921 PM MST SAT OCT 21 2000 .SYNOPSIS... A STRONG PACIFIC WEATHER SYSTEM IS FORECAST TO MOVE INTO SOUTHERN CALIFORNIA AND SOUTHWEST ARIZONA BY TONIGHT. IT WILL REMAIN NEARLY STATIONARY THROUGH SUNDAY AND SUNDAY NIGHT. IT WILL BRING A WIDE AREA OF RAIN ALONG WITH SCATTERED THUNDERSTORMS TO SOUTHWEST ARIZONA AND SOUTHEAST CALIFORNIA THROUGH SUNDAY NIGHT AND MONDAY. RAINFALL AMOUNTS COULD BE QUITE HEAVY DURING THAT PERIOD WITH FROM 1 TO 2 INCHES POSSIBLE IN SOME AREAS BY MONDAY MORNING. IT WILL BECOME MORE SHOWERY LATE MONDAY AND TUESDAY...WITH SHOWERS MAINLY OVER CENTRAL ARIZONA EARLY TUESDAY. PARLTY CLOUDY AND WARMER WEATHER IS FORECAST FOR WEDNESDAY AND THURSDAY. .DISCUSSION... THUNDERSTORMS HAVE CONTINUED TO DEVELOP EAST OF THE UPR TROF...WITH SEVERAL BANDS OF +TSRA. THE HEAVIEST PRECIP HAS BEEN AND SHOULD CONTINUE TO BE IN NW MARICOPA CO. VARIOUS WARNINGS AND STATEMENTS COVER THIS SITUATION. SIGNIFICANT RAINFALL AMOUNTS OVER THE NEXT 24 HOURS LIKELY...SO WILL CONTINUE FFA. 300MB WINDS STILL 120-130KTS ALONG CALIF WEST COAST WITH CLSD LOW ALONG SAN DIEGO COAST. VERY STRONG DYNAMICS FUELING THESE STORMS IN ARIZONA...AND WILL EXPECT LCL HEAVY AMOUNTS AS FCSTS INDICATE. NO UPDATES THIS EVENING. SIPPLE
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 8:21 PM MST | Flash Flood Warning | PSR | Maricopa | 99 min |
| Oct 21, 11:00 PM MST | Flash Flood Warning | PSR | Maricopa | 60 min |
| Oct 22, 3:01 AM MST | Flash Flood Warning | PSR | La Paz | 3 hr |
| Oct 22, 6:38 AM MST | Flash Flood Warning | PSR | La Paz | 4 hr |
Nearby
Flash Flood Warnings in Arizona, 2000Every 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; radar from the NEXRAD Level II archive.