Alert archive / Arizona / Flash Flood Warnings in 1992
Flash Flood Warning 13, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Aug 11, 1992, 6:17 PM MST for Maricopa County, Arizona. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 11, 1992, 6:17 PM MST (01:17 UTC)
- Expired
- Aug 11, 1992, 9:00 PM MST
- In force
- 3 hr
- Issued by
- NWS Phoenix, AZ
- Area
- Whole counties
County Maricopa County, AZ
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 1.3 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
- 940 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 2758 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Aug 11, 2:26 PM MST, 3 hours 51 minutes before
AZZALL-0120000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX AZ 225 PM MST TUE AUG 11 1991 ...STRONG THUNDERSTORMS ALONG THE MOGOLLON RIM THIS AFTERNOON... WEATHER RADAR AND AFTERNOON SATELLITE IMAGERY SHOW THUNDERSTORM DEVELOPMENT ALONG THE MOGOLLON RIM BETWEEN THE WHITE MOUNTAINS TO JUST NORTH OF PAYSON. RADAR INTENSITIES INDICATE THAT LOCALLY HEAVY RAINFALL MAY BE EXPECTED WITH THESE STORMS AS WELL AS GUSTY WINDS AND DANGEROUS LIGHTNING. A VERY MOIST AIRMASS COMBINED WITH MAXIMUM AFTERNOON HEATING BY THE SUN ARE THE MAIN INGREDIENTS FOR THESE THUNDERSTORMS. WINDS ALOFT ARE RATHER LIGHT AND THE STORMS ARE NOT SHOWING VERY MUCH MOVEMENT. MOTORISTS... CAMPERS AND OTHER PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD TAKE SHELTER WHEN THESE STORMS DEVELOP OVER YOUR AREA. BRIEF HEAVY SHOWERS AND LIGHTNING ARE LIKELY FROM THESE STORMS THROUGH THE EARLY EVENING HOURS. CARPENTER/BRECKENRIDGE
Special weather statement, Aug 11, 3:46 PM MST, 2 hours 31 minutes before
AZZALL-120100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PHOENIX ARIZONA 340 PM MST TUE AUG 11 1992 ...LARGE THUNDERSTORMS WITH HEAVY RAIN ORGANIZING OVER THE MOUNTAINS OF GILA COUNTY BETWEEN PAYSON AND 70 MILES SOUTHEAST OF PAYSON AT 330 PM... A GROUP OF LARGE THUNDERSTORMS WITH VERY HEAVY RAIN WERE ORGANIZING OVER THE MOUNTAINS OF GILA COUNTY AT 330 PM. THESE THUNDERSTORMS WERE GENERALLY LOCATED BETWEEN PAYSON AND 70 MILES SOUTHEAST OF PAYSON...MOVING SLOWLY SOUTHWEST TOWARDS THE CITIES OF GLOBE-MIAMI AND TOWARDS LAKE ROOSEVELT AND THE SALT RIVER RECREATIONAL LAKES NORTHEAST OF PHOENIX. THESE THUNDERSTORMS COULD EVENTUALLY SPREAD VERY HEAVY RAIN...STRONG WINDS...AND HAIL INTO LAKE ROOSEVELT...GLOBE-MIAMI...AND SECTIONS OF HIGHWAYS 60...77...AND 88 BY ABOUT 5 PM. IF THUNDERSTORMS CONTINUE TO HOLD TOGETHER THEY COULD ALSO EFFECT THE EAST VALLEY PORTIONS OF THE GREATER PHOENIX AREA SOMETIME AFTER 630 PM. RESIDENTS AND THOSE PLANNING OUTDOOR ACTIVITIES ARE URGED TO MONITOR WEATHER DEVELOPMENTS IN THE AREA. THUNDERSTORMS COULD ORGANIZE INTO LINES AND CLUSTERS AND STRIKE SUDDENLY. TAKE SHELTER IMMEDIATELY IF THREATENING WEATHER APPROACHES. CONTINUE TO LISTE"N TO THE LATEST FORECAST AND UPDATES IN THE EVENT WEATHER WATCHES...WARNINGS...AND ADVISORIES ARE ISSUED BY THE NATIONAL WEATHER SERVICE. VASQUEZ
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 5:00 PM MST | Flash Flood Warning | PSR | Pinal | 2 hr |
| Aug 11, 5:00 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 2 hr |
| Aug 11, 5:07 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 2 hr |
| Aug 11, 6:17 PM MST | Severe Thunderstorm Warning | PSR | Maricopa | 3 hr |
| Aug 11, 6:54 PM MST | Flash Flood Warning | PSR | Pinal | 81 min |
| Aug 11, 6:54 PM MST | Severe Thunderstorm Warning | PSR | Pinal | 81 min |
| Aug 11, 8:55 PM MST | Flash Flood Warning | PSR | Maricopa | 3 hr |
Nearby
Flash Flood Warnings in Arizona, 1992Every flash flood warning in 1992
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.