Alert archive / Arizona / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 26, NWS Flagstaff, AZ

July 26, 2013Coconino County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 26, 2013, 3:27 PM MST for Coconino County, Arizona. It was in force for 33 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 26, 2013, 3:27 PM MST (22:27 UTC)
Expired: Jul 26, 2013, 4:00 PM MST
In force: 33 min
Issued by: NWS Flagstaff, AZ
Area: Storm-based polygon

County Coconino County, AZ

The radar

The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 22:29 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 12:00Z, 10.5 hours before the alert went out and 68 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: 168 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 1711 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 26, 2:58 PM MST, 29 minutes earlier.

Area forecast discussion, Jul 26, 2:58 PM MST, 29 minutes before

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Hazardous weather outlook, Jul 26, 11:16 AM MST, 4 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1116 AM MST FRI JUL 26 2013

AZZ004>018-037>040-270900-
KAIBAB PLATEAU-MARBLE AND GLEN CANYONS-GRAND CANYON COUNTRY-
COCONINO PLATEAU-YAVAPAI COUNTY MOUNTAINS-
NORTHEAST PLATEAUS AND MESAS HWY 264 NORTHWARD-CHINLE VALLEY-
CHUSKA MOUNTAINS AND DEFIANCE PLATEAU-
LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY-
LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY-
LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY-
WESTERN MOGOLLON RIM-EASTERN MOGOLLON RIM-WHITE MOUNTAINS-
NORTHERN GILA COUNTY-YAVAPAI COUNTY VALLEYS AND BASINS-
OAK CREEK AND SYCAMORE CANYONS-BLACK MESA AREA-
NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264-
1116 AM MST FRI JUL 26 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...
NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN
ARIZONA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

...FLASH FLOOD WATCH IN EFFECT THROUGH 8 PM MST TODAY FOR
PORTIONS OF NORTHERN ARIZONA...

A VERY MOIST AND UNSTABLE ENVIRONMENT WILL CONTINUE ACROSS THE
REGION TODAY. SCATTERED TO WIDESPREAD THUNDERSTORMS CAPABLE OF
PRODUCING HEAVY RAINFALL ARE EXPECTED TO DEVELOP. THE DEEPEST
MOISTURE AND MOST SATURATED SOILS ARE ALONG THE MOGOLLON RIM AND
WHITE MOUNTAINS SOUTHWARD INTO YAVAPAI AND NORTHERN GILA
COUNTIES. A FLASH FLOOD WATCH IS IN EFFECT FOR THESE AREAS THROUGH
8 PM MST.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

MOIST CONDITIONS WILL PERSIST WITH AFTERNOON AND EVENING SHOWERS
AND THUNDERSTORMS THROUGH EARLY NEXT WEEK. CONVECTIVE ACTIVITY MAY
DECREASE SLIGHTLY IN COVERAGE BY MID WEEK.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jul 26, 9:47 AM MST, 5 hours 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
947 AM MST FRI JUL 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1130 AM     HEAVY RAIN       FLAGSTAFF               35.19N 111.62W
07/25/2013  E2.00 INCH       COCONINO           AZ   PUBLIC

            HEAVY RAIN FELL OVER THE HILLS NORTH OF WEST RT 66. THE
            RUNOFF CAUSED DAMAGE TO 5 PROPERTIES ALONG W RT 66
            BETWEEN 130 AND 200 PM.

&&

EVENT NUMBER FGZ1300052

MAS

Local storm report, Jul 26, 12:41 PM MST, 2 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1241 PM MST FRI JUL 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1220 PM     HEAVY RAIN       20 NNE FLAGSTAFF        35.46N 111.48W
07/26/2013  M1.88 INCH       COCONINO           AZ   FOREST SERVICE

            OLEARY PEAK RECEIVED 1.88 INCHES OF RAIN IN 45 MINUTES.
            PEA SIZED HAIL COVERED THE GROUND 1 2 INCH.

&&

EVENT NUMBER FGZ1300053

MAS

Local storm report, Jul 26, 1:57 PM MST, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
157 PM MST FRI JUL 26 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     FLASH FLOOD      2 NNE FLAGSTAFF         35.21N 111.61W
07/25/2013                   COCONINO           AZ   LAW ENFORCEMENT

            EAST FLAGSTAFF...FLOODING OF AREA ROADS. SOME ROADS
            IMPASSABLE INCLUDING ROUTE 66. 15 TO 20 HOMES HAD FLOOD
            WATERS COMING INSIDE THE HOMES.

&&

CORRECTED LOCATION...EVENT...REMARKS

EVENT NUMBER FGZ1300051

NWS FLAGSTAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 5:09 PM MST	Special Weather Statement	FGZ	Yavapai	36 min
Jul 25, 5:17 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	28 min
Jul 25, 5:32 PM MST	Severe Thunderstorm Warning	FGZ	Navajo	43 min
Jul 25, 5:36 PM MST	Special Weather Statement	FGZ		39 min
Jul 25, 5:52 PM MST	Areal Flood Advisory	FGZ	Navajo	83 min
Jul 25, 6:09 PM MST	Special Weather Statement	FGZ		51 min
Jul 25, 6:39 PM MST	Special Weather Statement	FGZ		36 min
Jul 26, 8:04 AM MST	Areal Flood Advisory	FGZ	Yavapai	3 hr
Jul 26, 9:44 AM MST	Flash Flood Warning	FGZ	Yavapai	3 hr
Jul 26, 10:46 AM MST	Flash Flood Watch	FGZ	Apache, Coconino, Gila, Navajo, Yavapai	9 hr
Jul 26, 11:27 AM MST	Flash Flood Warning	FGZ	Gila	2 hr
Jul 26, 12:17 PM MST	Areal Flood Advisory	FGZ	Apache	118 min
Jul 26, 1:03 PM MST	Areal Flood Advisory	FGZ	Coconino	3 hr
Jul 26, 1:49 PM MST	Flash Flood Warning	FGZ	Apache	3 hr
Jul 26, 2:32 PM MST	Flash Flood Warning	FGZ	Coconino	3 hr
Jul 26, 3:54 PM MST	Areal Flood Advisory	FGZ	Coconino, Navajo	4 hr
Jul 26, 4:26 PM MST	Areal Flood Advisory	FGZ	Apache, Navajo	3 hr

Nearby

Severe Thunderstorm Warnings in Arizona, 2013 Every severe thunderstorm warning in 2013

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.