Alert archive / Arizona / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 16, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 23, 2013, 3:38 PM MST for Coconino County, Navajo County, Arizona. It was in force for 37 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 23, 2013, 3:38 PM MST (22:38 UTC)
- Expired
- Jul 23, 2013, 4:15 PM MST
- In force
- 37 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
Counties Coconino County, AZ, Navajo County, AZ
The radar
The Flagstaff radar (KFSX), 117 km from the middle of the area, began a volume at 22:40 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 12:00Z, 10.6 hours before the alert went out and 384 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
- 39 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 1571 m above ground
- 0-6 km bulk shear
- 1 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 23, 3:18 PM MST, 20 minutes earlier.
Area forecast discussion, Jul 23, 3:18 PM MST, 20 minutes before
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</html>Hazardous weather outlook, Jul 23, 3:40 AM MST, 11 hours 58 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 340 AM MST TUE JUL 23 2013 AZZ004>018-037>040-240700- WESTERN MOGOLLON RIM-GRAND CANYON COUNTRY-YAVAPAI COUNTY MOUNTAINS- YAVAPAI COUNTY VALLEYS AND BASINS-OAK CREEK AND SYCAMORE CANYONS- MARBLE AND GLEN CANYONS-KAIBAB PLATEAU-COCONINO PLATEAU- NORTHEAST PLATEAU AND MESAS HWY 264 NORTHWARD- NORTHEAST PLATEAU AND MESAS SOUTH OF HWY 264- CHINLE VALLEY-CHUSKA MOUNTAINS AND DEFIANCE PLATEAU- BLACK MESA AREA-LITTLE COLORADO RIVER VALLEY IN COCONINO COUNTY- LITTLE COLORADO RIVER VALLEY IN NAVAJO COUNTY- LITTLE COLORADO RIVER VALLEY IN APACHE COUNTY- EASTERN MOGOLLON RIM-WHITE MOUNTAINS-NORTHERN GILA COUNTY- 340 AM MST TUE JUL 23 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO...NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY A VERY MOIST AND UNSTABLE ENVIRONMENT WILL CONTINUE ACROSS THE REGION TODAY. FLOW PATTERNS HAVE BECOME WEAK AND UNORGANIZED WHICH WILL FAVOR A TERRAIN DRIVEN STORM ENVIRONMENT. EXPECT STORMS TO FORM OVER HIGHER TERRAIN BY LATE MORNING...ESPECIALLY OVER THE MOGOLLON RIM AND WHITE MOUNTAINS. STORMS WILL MOVE OFF THE TERRAIN DURING THE AFTERNOON AND INTO PORTIONS OF THE LITTLE COLORADO RIVER VALLEY...YAVAPAI COUNTY...AND NORTHERN GILA COUNTY. SOME STORMS TODAY MAY PRODUCE LOCALLY TORRENTIAL RAINFALL WITH A POSSIBILITY OF LOCALIZED FLASH FLOODING. DUE TO RECENT HEAVY AND PERSISTENT RAINS...PORTIONS OF THE WESTERN MOGOLLON RIM...AS WELL AS RECENTLY BURNED AREAS...ARE THE MOST SUSCEPTIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY HIGHER THAN NORMAL MOISTURE WILL PERSIST DURING THIS TIME PERIOD WITH AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS CONTINUING. CHANCES FOR FLOODING WILL ALSO PERSIST...DUE TO FREQUENT AND LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Special weather statement, Jul 23, 2:40 PM MST, 58 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 240 PM MST TUE JUL 23 2013 AZZ017-232200- NAVAJO AZ-APACHE AZ- 240 PM MST TUE JUL 23 2013 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... SOUTHWESTERN APACHE COUNTY IN NORTHEAST ARIZONA SOUTHEASTERN NAVAJO COUNTY IN NORTHEAST ARIZONA UNTIL 300 PM MST AT 232 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A STRONG THUNDERSTORM WAS NEAR MCNARY OR 5 MILES EAST OF HONDAH...MOVING WEST AT 5 MPH. HAIL UP TO 0.5 TO 0.75 INCHES IN DIAMETER IS POSSIBLE FROM THIS STORM. LOCATIONS IMPACTED INCLUDE... PINETOP AND MCNARY... PRECAUTIONARY/PREPAREDNESS ACTIONS... STAY TUNED TO NOAA WEATHER RADIO...LOCAL RADIO OR TV FOR THE LATEST UPDATES. VERY HEAVY RAINFALL MAY CAUSE TEMPORARY PONDING ON SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. IN HEAVY RAINFALL SLOW DOWN TO REDUCE THE RISK OF HYDROPLANING...AND LEAVE A SAFE DISTANCE BETWEEN YOURSELF AND OTHER VEHICLES. && LAT...LON 3401 10991 3422 10995 3421 10980 3403 10978 TIME...MOT...LOC 2137Z 087DEG 4KT 3412 10986 TC
Special weather statement, Jul 23, 2:46 PM MST, 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
246 PM MST TUE JUL 23 2013
AZZ016-018-232230-
GILA AZ-NAVAJO AZ-
246 PM MST TUE JUL 23 2013
THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
EAST CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA
EXTREME SOUTH CENTRAL NAVAJO COUNTY IN NORTHEAST ARIZONA
UNTIL 330 PM MST
AT 241 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED THAT
A STRONG THUNDERSTORM WAS NEAR CEDAR CREEK 1-3 MILES SOUTH OF
CARRIZO...MOVING SOUTHWEST AT 10 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS
STORM...ALONG WITH VERY HEAVY RAIN.
LOCATIONS IMPACTED INCLUDE...
AREAS 1-5 MILES SOUTH OF CARRIZO...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE ADVISORY AREA AND STORMS APPROACH...TAKE SHELTER IN
A STURDY BUILDING.
&&
LAT...LON 3380 11030 3380 11031 3382 11033 3382 11039
3387 11048 3402 11031 3391 11013 3375 11024
TIME...MOT...LOC 2143Z 038DEG 10KT 3389 11029
TCThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 12:02 PM MST | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
| Jul 23, 12:50 PM MST | Areal Flood Advisory | FGZ | Coconino | 3 hr |
| Jul 23, 1:08 PM MST | Areal Flood Advisory | FGZ | Yavapai | 3 hr |
| Jul 23, 1:49 PM MST | Areal Flood Advisory | FGZ | Coconino | 3 hr |
| Jul 23, 1:51 PM MST | Areal Flood Advisory | FGZ | Coconino | 3 hr |
| Jul 23, 2:40 PM MST | Special Weather Statement | FGZ | 20 min | |
| Jul 23, 2:46 PM MST | Special Weather Statement | FGZ | Gila | 44 min |
| Jul 23, 4:49 PM MST | Areal Flood Advisory | FGZ | Coconino | 3 hr |
Nearby
Severe Thunderstorm Warnings in Arizona, 2013Every 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.