Alert archive / Arizona / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 21, NWS Flagstaff, AZ

July 10, 1996Gila County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 10, 1996, 4:02 PM MST for Gila County, Arizona. It was in force for 58 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
Jul 10, 1996, 4:02 PM MST (23:02 UTC)
Expired
Jul 10, 1996, 5:00 PM MST
In force
58 min
Issued by
NWS Flagstaff, AZ
Area
Whole counties

County Gila County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 11.0 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 12:00Z on 1996-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 1996-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
-5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 severe thunderstorm 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 severe thunderstorm warning went out at Jul 10, 1:55 PM MST, 2 hours 7 minutes earlier.

Area forecast discussion, Jul 10, 1:55 PM MST, 2 hours 7 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
200 PM MST WED JUL 10 1996

DEFORMATION ZONE CONTINUES ACROSS NORTHERN ARIZONA THIS AFTERNOON
PRODUCING SLOW MOVING HEAVY RAINERS. PW OF 1.2 INCHES IN THE MODELS
OVER THE AREA CORRESPONDING MORE WITH HALF HOUR RAINFALL IN SOME
PLACES RATHER THAN ONE HOUR. THETA-E AXIS ON EAST SIDE OF
DEFORMATION ZONE WITH PW AXIS ON THE WEST SIDE...AND CENTRAL
ARIZONA IN THE MIDDLE. ALREADY ONE FFW ISSUED FOR SOUTHERN
COCONINO...POSSIBILITY OF MORE LATER.

CONCENTRATING MORE ON FIRST PERIOD FOR ZONES...SO WILL PROBABLY
KEEP OTHER PERIODS A GENERAL MONSOON FORECAST WITH EMPHASIS ON
HEAVY RAIN TOMORROW SAME AREAS TODAY.

SIGLER

In the hours before

Special weather statement, Jul 10, 11:44 AM MST, 4 hours 18 minutes before
AZZ007-012>014-102300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1145 PM MST WED JUL 10 1996

...STRONG THUNDERSTORMS WITH LOCALLY HEAVY RAIN AND SMALL HAIL OVER
CENTRAL ARIZONA TODAY...

NATIONAL WEATHER SERVICE DOPPLER RADAR HAS BEEN INDICATING SCATTERED
STRONG THUNDERSTORMS DEVELOPING OVER MUCH OF CENTRAL ARIZONA SINCE
ABOUT 10:00 AM MST.  SOME OF THESE STORMS HAVE PRODUCED LOCALLY VERY
HEAVY RAINFALL AND SMALL HAIL.  AT 11:20 AM...THE WEATHER SERVICE
OFFICE IN BELLEMONT RECEIVED VERY HEAVY RAIN AND 1/4 INCH DIAMETER
HAIL COVERING THE GROUND.  RADAR ESTIMATES OF OVER ONE AND A HALF
INCHES OF PRECIPITATION IN AN HOUR WERE INDICATED JUST NORTHEAST OF
FLAGSTAFF NEAR WINONA...AND OVER AN INCH OF PRECIPITATION JUST SOUTH
OF THE FLAGSTAFF AIRPORT...AND NEAR BELLEMONT WEST OF FLAGSTAFF ON I-
40.

AT 11:30 AM MST...DOPPLER RADAR INDICATED THE STRONGEST STORMS WERE
IN THE VICINITY OF FLAGSTAFF...MAINLY JUST SOUTH AND WEST OF
TOWN...AS WELL AS EXTREME SOUTHEASTERN COCONINO COUNTY ALONG THE
MOGOLLON RIM NEAR HAPPY JACK AND THE BLUE RIDGE RESERVOIR.  OTHER
STORMS WERE BEGINNING TO DEVELOP IN PARTS OF YAVAPAI COUNTY NEAR
PRESCOTT AND SOUTH OF CAMP VERDE...AS WELL AS IN THE WHITE MOUNTAINS
OF EAST-CENTRAL ARIZONA.

MOTORISTS AND PEOPLE OUTDOORS IN CENTRAL ARIZONA TODAY SHOULD BE
PREPARED FOR LOCALLY HEAVY RAINFALL...CAUSING MINOR STREET FLOODING
AND REDUCED VISIBILITIES ON ROADWAYS...AS WELL AS RAPID RISEHS IN
SMALL STREAM BEDS AND WASHES.  DEADLY LIGHTNING AND SMALL HAIL WILL
ALSO ACCOMPANY MANY OF THESE STORMS.  TAKE COVER IF YOU ARE OUTDOORS
AND A THUNDERSTORM IS APPROACHING.

KEIGHTON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 1:20 PM MSTFlash Flood WarningFGZCoconino55 min
Jul 10, 4:02 PM MSTFlash Flood WarningFGZGila58 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1996Every severe thunderstorm 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.