Alert archive / Arizona / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 48, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 7, 2015, 3:00 PM MST for Coconino County, Navajo County, Arizona. It was in force for 30 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 7, 2015, 3:00 PM MST (22:00 UTC)
- Expired
- Jul 7, 2015, 3:30 PM MST
- In force
- 30 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 22:01 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, 10.0 hours before the alert went out and 81 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
- 111 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1418 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
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 7, 10:03 AM MST, 4 hours 57 minutes earlier.
Area forecast discussion, Jul 7, 10:03 AM MST, 4 hours 57 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1003 AM MST TUE JUL 7 2015 .SYNOPSIS...MONSOON MOISTURE WILL REMAIN IN PLACE ACROSS NORTHERN ARIZONA THROUGH TODAY. DRIER AIR WILL PUSH EASTWARD WEDNESDAY THROUGH FRIDAY...WITH LITTLE OR NO THUNDERSTORM ACTIVITY OVER CENTRAL AND WESTERN ARIZONA. THE CHANCE OF STORMS WILL CONTINUE ACROSS APACHE COUNTY. MOISTURE WILL SPREAD WESTWARD THIS WEEKEND...WITH THUNDERSTORM CHANCES ACROSS ALL OF THE NORTHLAND BY SUNDAY. && .UPDATE...RAISED SHOWER/T-STORM CHANCES SLIGHTLY FROM AROUND FLAGSTAFF NORTHWARD FOR THE REST OF THIS MORNING THROUGH THIS AFTERNOON. A WEAK DISTURBANCE AND ASSOCIATED MID-LEVEL COLD AIR/STEEP LAPSE RATES WILL MOVE ACROSS THE NORTHERN PORTIONS OF ARIZONA TODAY. DRYING IS STILL ON TAP STARTING TOMORROW, BUT THERE IS A BIT OF MODEL DISAGREEMENT ON JUST HOW FAR EAST THE DRIER AIR WILL PUSH. RAISED POPS WEDNESDAY AFTERNOON BACK TO AROUND 20 PERCENT FOR THE FLAGSTAFF/GRAND CANYON AREAS, HIGHER EAST OF THERE. THURSDAY AND FRIDAY LOOK LIKE THE DRIEST DAYS, WITH STORM CHANCES LIKELY CONFINED TO FAR EASTERN ARIZONA. UPDATES SENT A SHORT TIME AGO. && .PREV DISCUSSION /330 AM MST/... SATELLITE IMAGERY SHOWING CLEAR SKIES ACROSS MOST OF THE NORTHLAND THIS MORNING. SATELLITE PW ESTIMATES AND SFC DEW POINTS ARE LOWER THAN 24 HOURS AGO. HOWEVER...THERE IS STILL MORE THAN ENOUGH MOISTURE AND INSTABILITY ALOFT FOR SCATTERED SHOWERS AND THUNDERSTORMS FROM LATE MORNING THROUGH THIS EVENING AS SOLAR HEATING PROVIDES THE LIFT NEEDED TO GET THIS GOING. STILL EXPECTING A STRONG DRYING TREND STARTING WEDNESDAY AS A LOW PRESSURE SYSTEM OFF THE WEST COAST TURNS OUR FLOW TO SOUTHWESTERLY. MONSOON MOISTURE SHOULD REMAIN ACROSS APACHE COUNTY THOUGH. FOR THURSDAY AND FRIDAY, MODELS ARE INDICATING THAT IT WILL BE DRY AND STABLE ENOUGH FOR NO STORM ACTIVITY WEST OF A LINE FROM KAYENTA TO PAYSON. BREEZY SOUTH TO SOUTHWEST WINDS ARE EXPECTED ACROSS COCONINO AND YAVPAI COUNTIES...WITH GUSTS TO 30 MPH. DAYTIME HIGH TEMPERATURES WILL COOL, WITH VALUES 5-10 DEGREES BELOW DAILY AVERAGES. MOST MODEL FORECASTS INDICATE THE RIDGE PUSHING WESTWARD BY THE WEEKEND, PUSHING MONSOON MOISTURE BACK INTO OUR AREA. RAIN CHANCES GO UP FROM SATURDAY THROUGH MONDAY. && .AVIATION...FOR THE 18Z PACKAGE...SCT TSRA/SHRA ARE EXPECTED AGAIN THROUGH AROUND 04Z WITH MVFR TO IFR CONDS NEAR STORMS. ISOLD-SCT -SHRA MAY CONTINUE THROUGH 10Z. AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS. && .FIRE WEATHER...HIGH PRESSURE OVER THE REGION AND A TROUGH OF LOW PRESSURE OFF THE CALIFORNIA COAST WILL KEEP A MOIST AND UNSTABLE CIRCULATION OVER ARIZONA THROUGH TUESDAY. DRIER WESTERLY FLOW WILL DEVELOP AS THE TROUGH BEGINS TO MOVE EASTWARD ON WEDNESDAY. THURSDAY THROUGH SATURDAY...A GRADUAL DRYING TREND WILL CONTINUE THROUGH FRIDAY ESPECIALLY ACROSS WESTERN AND CENTRAL ARIZONA. EXPECT TEMPERATURES TO REMAIN BELOW NORMAL...WITH DECREASING AFTERNOON HUMIDITY VALUES AND BREEZY SOUTHWEST WINDS. MOISTURE WILL BEGIN TO MOVE IN FROM THE SOUTH AGAIN ON SATURDAY WITH INCREASING CHANCES FOR && .FGZ WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC...JJ/DL AVIATION...MAS FIRE WEATHER...TC FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT WEATHER.GOV/FLAGSTAFF
In the hours before
Special weather statement, Jul 7, 1:14 PM MST, 1 hour 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 114 PM MST TUE JUL 7 2015 AZZ007-008-072045- YAVAPAI COUNTY MOUNTAINS-COCONINO PLATEAU- 114 PM MST TUE JUL 7 2015 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN COCONINO AND NORTHERN YAVAPAI COUNTIES... AT 113 PM MST...A STRONG THUNDERSTORM WAS 8 MILES NORTHWEST OF ASH FORK...MOVING NORTHEAST AT 10 MPH. WINDS IN EXCESS OF 40 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHERN YAVAPAI COUNTY MOUNTAINS AND SOUTHERN COCONINO PLATEAU COUNTIES. THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 137 AND 140. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. LAT...LON 3521 11263 3529 11269 3539 11254 3528 11245 TIME...MOT...LOC 2013Z 244DEG 12KT 3527 11263 CLM
Special weather statement, Jul 7, 1:16 PM MST, 1 hour 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 116 PM MST TUE JUL 7 2015 AZZ008-037-072045- YAVAPAI COUNTY MOUNTAINS-YAVAPAI COUNTY VALLEYS AND BASINS- 116 PM MST TUE JUL 7 2015 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN YAVAPAI COUNTY UNTIL 145 PM MST... AT 115 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR PRESCOTT VALLEY...MOVING NORTHEAST AT 15 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... PRESCOTT VALLEY...YAVAPAI COUNTY FAIRGROUNDS...HIGHWAY 89A AND GLASSFORD HILL. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3458 11233 3465 11240 3465 11218 TIME...MOT...LOC 2015Z 228DEG 13KT 3466 11231 JJ
Special weather statement, Jul 7, 1:37 PM MST, 1 hour 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 137 PM MST TUE JUL 7 2015 AZZ008-037-072100- YAVAPAI COUNTY MOUNTAINS-YAVAPAI COUNTY VALLEYS AND BASINS- 137 PM MST TUE JUL 7 2015 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL YAVAPAI COUNTY UNTIL 200 PM MST... AT 136 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER CLARKDALE...MOVING SOUTHEAST AT 10 MPH. HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. TORRENTIAL RAINFALL IS ALSO OCCURRING THAT COULD LEAD TO STREET FLOODING. LOCATIONS IMPACTED INCLUDE... CLARKDALE...COTTONWOOD...VERDE VILLAGE...BRIDGEPORT...JEROME...TUZIGOOT NATIONAL MONUMENT AND DEAD HORSE RANCH STATE PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3471 11214 3482 11210 3477 11191 3464 11197 TIME...MOT...LOC 2036Z 293DEG 10KT 3475 11209
Special weather statement, Jul 7, 1:38 PM MST, 1 hour 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 138 PM MST TUE JUL 7 2015 AZZ007-008-072100- YAVAPAI COUNTY MOUNTAINS-COCONINO PLATEAU- 138 PM MST TUE JUL 7 2015 ...A STRONG THUNDERSTORM WILL AFFECT WESTERN COCONINO AND NORTHWESTERN YAVAPAI COUNTIES... AT 136 PM MST...A STRONG THUNDERSTORM WAS 9 MILES EAST OF PEACH SPRINGS...OR 19 MILES SOUTHWEST OF FRAZIERS WELL...MOVING EAST AT 15 MPH. WINDS IN EXCESS OF 30 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHWESTERN YAVAPAI COUNTY MOUNTAINS AND WEST CENTRAL COCONINO PLATEAU COUNTIES. THIS INCLUDES ROUTE 66 BETWEEN MILE MARKERS 112 AND 123. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. LAT...LON 3548 11329 3557 11329 3561 11310 3546 11309 TIME...MOT...LOC 2036Z 268DEG 14KT 3553 11323 CLM
Special weather statement, Jul 7, 2:43 PM MST, 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FLAGSTAFF AZ 243 PM MST TUE JUL 7 2015 AZZ015-072215- WESTERN MOGOLLON RIM- 243 PM MST TUE JUL 7 2015 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL COCONINO COUNTY UNTIL 315 PM MST... AT 242 PM MST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER EAST FLAGSTAFF...MOVING EAST AT 25 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... FLAGSTAFF...DOWNTOWN FLAGSTAFF...WALNUT CANYON NATIONAL MONUMENT... DONEY PARK...COSNINO...FLAGSTAFF MALL AND WALNUT CANYON VISITORS CENTER. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3514 11166 3522 11169 3533 11146 3518 11140 TIME...MOT...LOC 2142Z 253DEG 22KT 3520 11159 JJ
Special weather statement, Jul 7, 2:56 PM MST, 4 minutes before
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</html>The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 5:56 PM MST | Special Weather Statement | FGZ | 19 min | |
| Jul 6, 6:20 PM MST | Special Weather Statement | FGZ | Apache | 25 min |
| Jul 6, 7:14 PM MST | Special Weather Statement | FGZ | 31 min | |
| Jul 7, 11:26 AM MST | Special Weather Statement | FGZ | Yavapai | 34 min |
| Jul 7, 12:10 PM MST | Special Weather Statement | FGZ | Yavapai | 35 min |
| Jul 7, 12:34 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 26 min |
| Jul 7, 12:42 PM MST | Special Weather Statement | FGZ | Yavapai | 33 min |
| Jul 7, 12:58 PM MST | Areal Flood Advisory | FGZ | Yavapai | 2 hr |
| Jul 7, 1:14 PM MST | Special Weather Statement | FGZ | 31 min | |
| Jul 7, 1:16 PM MST | Special Weather Statement | FGZ | Yavapai | 29 min |
| Jul 7, 1:37 PM MST | Special Weather Statement | FGZ | Yavapai | 23 min |
| Jul 7, 1:38 PM MST | Special Weather Statement | FGZ | Mohave | 22 min |
| Jul 7, 2:43 PM MST | Special Weather Statement | FGZ | 32 min | |
| Jul 7, 2:49 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 26 min |
| Jul 7, 2:56 PM MST | Special Weather Statement | FGZ | 34 min | |
| Jul 7, 3:19 PM MST | Special Weather Statement | FGZ | Gila | 26 min |
| Jul 7, 3:31 PM MST | Special Weather Statement | FGZ | 14 min | |
| Jul 7, 3:36 PM MST | Special Weather Statement | FGZ | 24 min | |
| Jul 7, 3:41 PM MST | Special Weather Statement | FGZ | Yavapai | 19 min |
| Jul 7, 3:46 PM MST | Special Weather Statement | FGZ | 29 min | |
| Jul 7, 3:55 PM MST | Special Weather Statement | FGZ | 20 min | |
| Jul 7, 4:08 PM MST | Special Weather Statement | FGZ | 7 min | |
| Jul 7, 4:24 PM MST | Special Weather Statement | FGZ | Yavapai | 21 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2015Every severe thunderstorm warning in 2015
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.