Alert archive / Arizona / Flash Flood Warnings in 1990
Flash Flood Warning 12, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Aug 13, 1990, 6:13 PM MST for Apache County, Arizona. It was in force for 82 min.
The area
The counties it named.
The facts
- Issued
- Aug 13, 1990, 6:13 PM MST (01:13 UTC)
- Expired
- Aug 13, 1990, 7:35 PM MST
- In force
- 82 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties
County Apache 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
Winslow (Autob), AZ (KINW), launched 00:00Z, 1.2 hours before the alert went out and 118 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
- 1796 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- -8 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 KINW 140113 FFWINW AZC001-017-140315- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE WINSLOW ARIZONA 613 PM MST MON AUG 13 1990 THE NATIONAL WEATHER SERVICE IN WINSLOW ARIZOHAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 815 PM MST FOR THE FOLLOWING LOCATIONS...S... IN NORTHEAST ARIZONA ...SOUTHERN APACHE COUNTY...SOUTHERN NAVAJO COUNTY THE FLASH FLOOD WARNING FOR SOUTHERN NAVAJO HAS BEEN UPDATED TO INCLUDE SOUTHERN APACHE COUNTY. SATALITE PRECIPTATION ESTIMATES CALL FOR RAINFALL AT THE RATE OF 1 INCH PER HOUR BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. MILAZZO NNNN
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 13, 12:40 PM MST, 5 hours 33 minutes before
AZZ003-005-006-131240-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WINSLOW AZ
1240 PM MST MON AUG 13 1990
...MONSOON WEATHER BRINGS COOLER TEMPERATURES TO THE...
...NORTHEAST PLATEAU AND WHITE MOUINTAINS...
ALTHOUGH THUNDERSTORMS WERE FEW AND FAR BETWEEN...THERE HAVE BEEN
SCATTERED SHOWERS ACROSS THE NORTHEAST PLATEAU AND WHITE MOUNTAINS
BRINGING BELOW NORMAL TEMPERATURES. THE LOW THIS MORNING AT WINSLOW
AIRPORT WAS 57 WHILE THE TEMPERATURE AT NOON WAS ONLY 63. OVERCAST
SKYS SHOULD CONTINUE TODAY AND POSSIBLY THIS EVENING KEEPING
TEMPERATURES DOWN. SHOWERS ARE EXPECTED TO INCREASE THIS AFTERNOON
AND EVENING AND MAY DEVELOP INTO MORE THUNDERSTORMS SOME MAY PRODUCE
HEAVY RAIN... DEADLY LIGHTNING...HAIL AND STRONG GUSTY WINDS. LOOSE
OBJECTS MAY BECOME AIRBORNE AND DANGEROUS.
LOCAL FLOODING OF LOW LYING AREAS AND NORMALLY DRY WASHES IS
POSSIBLE DURNING SOME OF THESE THUNDERSTORMS OR SHOWERS.
REMEMBER...NEVER ATTEMPT TO CROSS A FLOODED ROADWAY EITHER ON FOOT OR
IN YOUR CAR. DIRT ROADS ON THE NAHVJO AND HOPI RESERVATIONS MAY
BECOME MUDDY AND UNPASSABLE. UNBRIGDED RIVER CROSSINGS SHOULD BE
ADVOIDED.
IF LIGHTNING IS NEARBY TAKE SHELTER INDOORS OR IN YOUR CAR. NEVER
SEEK SHELTER FROM LIGHTNING UNDER A TREE.
LISTEN TO COMERICAL RADIO...TELEVISION OR NOAA WEATHER RADIO FOR THE
LATEST FORECAST OR ADDITIONAL STATEMENTS.
MILAZZOThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 5:10 PM MST | Flash Flood Warning | FGZ | Navajo | 3 hr |
| Aug 13, 6:13 PM MST | Flash Flood Warning | FGZ | Navajo | 82 min |
Nearby
Flash Flood Warnings in Arizona, 1990Every flash flood warning in 1990
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.