Alert archive / Arizona / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 28, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jun 30, 2015, 7:28 PM MST for Coconino County, Yavapai County, Arizona. It was in force for 32 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
- Jun 30, 2015, 7:28 PM MST (02:28 UTC)
- Expired
- Jun 30, 2015, 8:00 PM MST
- In force
- 32 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
Counties Coconino County, AZ, Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 113 km from the middle of the area, began a volume at 02:31 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
Phoenix, AZ (KPSR), launched 00:00Z, 2.5 hours before the alert went out and 200 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
- 1264 J/kg
- Mixed-layer CIN
- -205 J/kg
- Mixed-layer LCL
- 2488 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 Jun 30, 3:51 PM MST, 3 hours 37 minutes earlier.
Area forecast discussion, Jun 30, 3:51 PM MST, 3 hours 37 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 323 AM MST TUE JUN 30 2015 AZZ004>018-037>040-010230- 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- 323 AM MST TUE JUN 30 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR APACHE...COCONINO... NORTHERN GILA...NAVAJO...AND YAVAPAI COUNTIES IN NORTHERN ARIZONA. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL FORM OVER THE MOUNTAINS BY EARLY AFTERNOON AND THEN MOVE WEST TO SOUTHWEST INTO THE VALLEYS. STORMS WILL BE MOST NUMEROUS FROM THE MOGOLLON RIM SOUTHWARD. A FEW STORMS THAT MOVE ACROSS YAVAPAI AND GILA COUNTIES COULD BECOME SEVERE FROM MID AFTERNOON INTO THE EVENING HOURS WITH WIND GUSTS IN EXCESS OF 60 MPH. AS USUAL, CLOUD TO GROUND LIGHTNING, HEAVY RAIN AND HAIL WILL BE POSSIBLE WITH ANY STORMS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY MONSOONAL FLOW WILL REMAIN OVER NORTHERN ARIZONA WITH A CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Special weather statement, Jun 30, 1:57 PM MST, 5 hours 31 minutes before
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</html>Local storm report, Jun 30, 3:38 PM MST, 3 hours 50 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 1, 12:42 AM MST | Special Weather Statement | FGZ | Yavapai | 33 min |
| Jul 1, 1:23 AM MST | Special Weather Statement | FGZ | 22 min | |
| Jul 1, 1:49 PM MST | Special Weather Statement | FGZ | Apache | 41 min |
| Jul 1, 2:12 PM MST | Special Weather Statement | FGZ | 48 min | |
| Jul 1, 2:17 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 28 min |
| Jul 1, 2:30 PM MST | Severe Thunderstorm Warning | FGZ | Apache | 30 min |
| Jul 1, 2:36 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 24 min |
| Jul 1, 2:43 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 32 min |
| Jul 1, 3:05 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Navajo | 25 min |
| Jul 1, 3:12 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 48 min |
| Jul 1, 3:29 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 16 min |
| Jul 1, 3:30 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Navajo | 20 min |
| Jul 1, 4:15 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 30 min |
| Jul 1, 4:21 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 24 min |
| Jul 1, 4:49 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 12 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.