Alert archive / Arizona / Flash Flood Warnings in 1996

Flash Flood Warning 39, NWS Flagstaff, AZ

September 13, 1996Yavapai County, Arizona

NWS Flagstaff, AZ issued this flash flood warning at Sep 13, 1996, 5:11 PM MST for Yavapai County, Arizona. It was in force for 49 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, 5:11 PM MST (00:11 UTC)
Expired: Sep 13, 1996, 6:00 PM MST
In force: 49 min
Issued by: NWS Flagstaff, AZ
Area: Whole counties

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 00:13 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

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 0.2 hours before the alert went out and 98 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 32 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1053 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 172 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFLG 140011
FFWFLG
AZC025-140100-

BULLTIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
511 PM MST FRI SEP 13 1996

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN CENTRAL ARIZONA

   ...SOUTHWESTERN YAVAPAI COUNTY
 
AT 510 PM MST...A SEVERE THUNDERSTORM WAS 10 MILES SOUTH OF BAGDAD
MOVING NORTHEAST AT 30 MPH. RADAR INDICATES THIS STORM IS
PRODUCING OVER AN INCH OF RAIN AN HOUR.
 
IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER IN A STRONG BUILDING AND
STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. SEVERE
THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN
AND DEADLY LIGHTNING.

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 9 minutes earlier.

Area forecast discussion, Sep 13, 2:02 PM MST, 3 hours 9 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 36 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 1 minute 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 31 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.

Issued	Product	Office	Counties	Lasted
Sep 13, 5:11 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	49 min
Sep 13, 5:21 PM MST	Flash Flood Warning	FGZ	Gila	99 min
Sep 13, 5:52 PM MST	Flash Flood Warning	FGZ	Yavapai	53 min
Sep 13, 5:52 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	53 min
Sep 13, 6:28 PM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	47 min
Sep 13, 6:32 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	48 min
Sep 13, 6:41 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	64 min
Sep 13, 6:55 PM MST	Flash Flood Warning	FGZ	Gila	2 hr
Sep 13, 7:15 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	60 min
Sep 13, 7:19 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	56 min
Sep 13, 7:31 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	2 hr
Sep 13, 8:04 PM MST	Severe Thunderstorm Warning	FGZ	Coconino	56 min
Sep 14, 5:30 AM MST	Flash Flood Warning	FGZ	Gila	85 min
Sep 14, 6:23 AM MST	Severe Thunderstorm Warning	FGZ	Yavapai	57 min
Sep 14, 6:37 AM MST	Severe Thunderstorm Warning	FGZ	Coconino, Yavapai	63 min
Sep 14, 7:47 AM MST	Severe Thunderstorm Warning	FGZ	Coconino	43 min

Nearby

Flash Flood Warnings in Arizona, 1996 Every 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.