Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 40, NWS Flagstaff, AZ

September 13, 1996Gila County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Sep 13, 1996, 5:21 PM MST for Gila County, Arizona. It was in force for 99 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
Sep 13, 1996, 5:21 PM MST (00:21 UTC)
Expired
Sep 13, 1996, 7:00 PM MST
In force
99 min
Issued by
NWS Flagstaff, AZ
Area
Whole counties

County Gila County, AZ

The radar

The Flagstaff radar (KFSX), 93 km from the middle of the area, began a volume at 00:23 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, 0.4 hours before the alert went out and 181 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-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 1996-09-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1046 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 1996-09-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1046 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
2120 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

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.

NWS Flagstaff, AZ wrote its last area forecast discussion before this flash flood warning went out at Sep 13, 2:02 PM MST, 3 hours 19 minutes earlier.

Area forecast discussion, Sep 13, 2:02 PM MST, 3 hours 19 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
200 PM MST FRI SEP 13 1996

SVR BOX JUST OUT...UPDATES TO DO.

FLG 5300 INW 4300

PASSETTI

In the hours before

Special weather statement, Sep 13, 12:35 PM MST, 4 hours 46 minutes before
AZZ007-132035-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1232 PM MST FRI SEP 13 1996

...THUNDERSTORMS DEVELOPING IN YAVAPAI COUNTY...

AT 1228 PM MST...FLAGSTAFF DOPPLER RADAR INDICATED THUNDERSTORMS
DEVELOPING IN YAVAPAI COUNTY OF ARIZONA. THE STRONGEST STORMS
WERE IN SOUTHWESTERN YAVAPAI ABOUT 30 MILES SOUTHWEST OF PRESCOTT.
MOVEMENT WAS TO THE NORTHEAST AT 20 MPH.

THUNDERSTORMS THIS AFTERNOON WILL BE CAPABLE OF BRIEF HEAVY RAIN
...DEADLY LIGHTNING AND POSSIBLY HAIL. VERY STRONG WIND GUSTS
ARE ALSO POSSIBLE NEAR STORMS.

PEOPLE IN YAVAPAI COUNTY SHOULD FIND SAFE SHELTER IF THREATENING
WEATHER APPROACHES. STAY TUNED TO LOCAL MEDIA OR NOAA WEATHER RADIO
FOR UPDATES AND POSSIBLE WARNINGS.

BT
Special weather statement, Sep 13, 2:10 PM MST, 3 hours 11 minutes before
AZZ007-132215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
210 PM MST FRI SEP 13 1996

...STRONG THUNDERSTORMS IN YAVAPAI COUNTY...

AT 210 PM MST...FLAGSTAFF DOPPLER RADAR INDICATED STRONG
THUNDERSTORMS IN YAVAPAI COUNTY. ONE WAS FIVE MILES SOUTHWEST
OF PRESCOTT WHILE ANOTHER WAS 15 MILES WEST OF CONGRESS. MOVEMENT
WAS TO THE NORTHEAST AT 25 MPH.

STRONG WIND GUSTS...FREQUENT LIGHTNING...VERY HEAVY RAINFALL AND
HAIL MAY AfCCOMPANY THESE STORMS.

IF YOU ARE OUTDOORS AND A STORM APPROACHES...MOVE TO A PLACE OF
SHELTER IMMEDIATELY.  MOTORISTS SHOULD REMAIN ALERT FOR STREET
FLOODING AND REDUCED VISIBILITIES IN HEAVY RAIN.

BT
Special weather statement, Sep 13, 2:40 PM MST, 2 hours 41 minutes before
AZZ007-011>013-132240-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
240 PM MST FRI SEP 13 1996

...SEVERE THUNDERSTORM WATCH INCLUDES MUCH OF CENTRAL ARIZONA...

AT 235 PM MST...STRONG THUNDERSTORMS CONTINUED TO MOVE NORTHEAST
AT 25 MPH ACROSS YAVAPAI COUNTY. THE STRONGEST STORMS WERE NEAR
PRESCOTT VALLEY AND JUST NORTHEAST OF WICKENBURG. AT 215 PM HAIL
1/2 INCH IN DIAMETER WAS REPORTED IN PRESCOTT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM MST THIS
EVENING AND INCLUDES MUCH OF CENTRAL ARIZONA. THUNDERSTORMS
THIS AFTERNOON AND EVENING MAY PRODUCE DAMAGING WINDS
...HAIL..DEADLY LIGHTNING AND VERY HEAVY RAIN.

IF THREATENING WEATHER APPROACHES YOUR AREA FIND SAFE SHELTER
AT ONCE.

BT

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 13, 5:11 PM MSTFlash Flood WarningFGZYavapai49 min
Sep 13, 5:11 PM MSTSevere Thunderstorm WarningFGZYavapai49 min
Sep 13, 5:52 PM MSTFlash Flood WarningFGZYavapai53 min
Sep 13, 5:52 PM MSTSevere Thunderstorm WarningFGZYavapai53 min
Sep 13, 6:28 PM MSTSevere Thunderstorm WarningFGZCoconino, Yavapai47 min
Sep 13, 6:32 PM MSTSevere Thunderstorm WarningFGZYavapai48 min
Sep 13, 6:41 PM MSTSevere Thunderstorm WarningFGZYavapai64 min
Sep 13, 6:55 PM MSTFlash Flood WarningFGZGila2 hr
Sep 13, 7:15 PM MSTSevere Thunderstorm WarningFGZNavajo60 min
Sep 13, 7:19 PM MSTSevere Thunderstorm WarningFGZCoconino56 min
Sep 13, 7:31 PM MSTSevere Thunderstorm WarningFGZYavapai2 hr
Sep 13, 8:04 PM MSTSevere Thunderstorm WarningFGZCoconino56 min
Sep 14, 5:30 AM MSTFlash Flood WarningFGZGila85 min
Sep 14, 6:23 AM MSTSevere Thunderstorm WarningFGZYavapai57 min
Sep 14, 6:37 AM MSTSevere Thunderstorm WarningFGZCoconino, Yavapai63 min
Sep 14, 7:47 AM MSTSevere Thunderstorm WarningFGZCoconino43 min

Nearby

Flash Flood Warnings in Arizona, 1996Every flash flood warning in 1996

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.