Alert archive / Arizona / Flash Flood Warnings in 1998
Flash Flood Warning 3, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 21, 1998, 6:05 PM MST for Maricopa County, Arizona. It was in force for 2 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
- Jul 21, 1998, 6:05 PM MST (01:05 UTC)
- Expired
- Jul 21, 1998, 8:05 PM MST
- In force
- 2 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 1.1 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 6027 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPHX 220106 FFWPHX AZC013-220305- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PHOENIX AZ 605 PM MST TUE JUL 21 1998 THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A * FLASH FLOOD WARNING FOR NORTHWESTERN MARICOPA COUNTY IN CENTRAL ARIZONA * UNTIL 805 PM MST * AT 6 PM MST DOPPLER RADAR ESTIMATED RAINFALL RATES OF 1 TO 2 INCHES DURING THE PAST HOUR IN FAR NORTHWEST MARICOPA COUNTY. ALMOST 1.5 INCHES OF RAIN FELL IN A GAUGE IN SOLS WASH SINCE 5 PM AS WELL. AS A RESULT... FLASH FLOODING IS OCCURRING OR IMMINENT IN THE WARNING LOCATIONS. * SOME LOCATIONS AFFECTED INCLUDE WICKENBURG AGUILA SOLS WASH
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.
In the hours before
Special weather statement, Jul 21, 2:36 PM MST, 3 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PHOENIX AZ 236 PM MST TUE JUL 21 1998 AZZ020>028-CAZ030>033-221200- MARICOPA-SOUTHERN GILA-NORTHWEST PINAL-YUMA-LA PAZ-IMPERIAL- CENTRAL/EASTERN RIVERSIDE-JOSHUA TREE NATIONAL PARK- ...THERE IS A MODERATE RISK OF HAZARDOUS WEATHER IN MARICOPA COUNTY AND SOUTHERN GILA...NORTHWEST PINAL AND SOUTHERN YUMA COUNTIES THIS LATE AFTERNOON AND TONIGHT... STRONG THUNDERSTORMS ARE EXPECTED TO MOVE ACROSS THE AREA FROM THE EAST AND SOUTHEAST LATER THIS AFTERNOON AND TONIGHT. HEAVY RAIN AND FLASH FLOODING WILL BE THE MAIN THREATS IN MARICOPA...NORTHWEST PINAL AND SOUTHERN GILA COUNTIES. HEAVY RAIN MAY FALL IN SOUTHERN YUMA COUNTY AS WELL...BUT THE THREAT OF FLASH FLOODING WILL BE LESS. IN ADDITION...THUNDERSTORMS MAY PRODUCE STRONG...GUSTY WIND AND HAIL ...WITH AREAS OF BLOWING DUST POSSIBLE ON THE DESERTS. ********************************************************************* HAZARDOUS WEATHER REFERS TO ANY OF THE FOLLOWING... 1) LOCALLY HEAVY RAINFALL RESULTING IN FLASH FLOODING OR FLOODING 2) SAND OR DUST STORM REDUCING VISIBILITY TO 1/4 MILE OR LESS 3) DAMAGING WINDS IN EXCESS OF 57 MPH 4) HAIL 3/4 INCH OR LARGER IN DIAMETER CHECK THE PHOENIX STATE FORECAST DISCUSSION FOR MORE INFORMATION. WILT
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 9:14 AM MST | Flash Flood Warning | PSR | Pinal | 3 hr |
| Jul 22, 10:58 AM MST | Flash Flood Warning | PSR | Pinal | 3 hr |
| Jul 22, 2:27 PM MST | Severe Thunderstorm Warning | PSR | La Paz | 48 min |
Nearby
Flash Flood Warnings in Arizona, 1998Every flash flood warning in 1998
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.