Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 98, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Sep 16, 1997, 2:25 PM MST for Coconino County, Yavapai County, Arizona. It was in force for 65 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
- Sep 16, 1997, 2:25 PM MST (21:25 UTC)
- Expired
- Sep 16, 1997, 3:30 PM MST
- In force
- 65 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties
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 21:29 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, 9.4 hours before the alert went out and 33 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1328 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFLG 162125 SVRFLG AZC005-025-162230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 225 PM MST TUE SEP 16 1997 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF AZ HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH CENTRAL ARIZONA ...SOUTH CENTRAL AND SOUTHERN COCONINO COUNTY IN CENTRAL ARIZONA ...NORTHEASTERN YAVAPAI COUNTY AT 225 PM MST...A SEVERE THUNDERSTORM WAS INDICATED BY FLAGSTAFF DOPPLER RADAR 15 MILES SOUTHEAST OF SEDONA OR 9 MILES WEST OF HAPPY JACK MOVING EAST NORTHEAST AT 30 MPH. SOME LOCATIONS IN THE WARNING AREA INCLUDE... HAPPY JACK AND MORMON LAKE. WHEN THUNDERSTORMS ARE OCCURRING...FIND SHELTER INSIDE A STRONG BUILDING AND DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINbGS.
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 Sep 16, 2:13 PM MST, 12 minutes earlier.
Area forecast discussion, Sep 16, 2:13 PM MST, 12 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 215 PM MST TUE SEP 16 1997 CONVECTION TOOK A WHILE TO DEVELOP TODAY MAINLY BECAUSE OF THE MID- LEVEL RESIDUAL MORNING CLOUDINESS AND THE CONSIDERABLE DRYING THAT TOOK PLACE AT H7-H85 LEVEL. EXPECT SOME MORE OF A DECREASE IN MOISTURE ESPECIALLY IN THE WESTERN SECTION FOR WED BUT BECAUSE OF LESS CLOUDS IN THE MORNING THE CONVECTION SHOULD COME CLOSE TO TODAYS ACTIVITY. ON THU A TROF FROM THE WEST APPROACHES US AND BRINGS BACK MEMORIES OF THE WINTER-TIME PATTERNS SOMEWHAT. WITH IT EXPECT SOME INCREASING WINDS AND LOWERING TEMPS INTO THU BUT IT APPEARS FOR NOW THAT IT WILL STALL OVER S NV AND THUS APPEARS TO BE FAIRLY DRYJ INTO THU EVENING WITH JUST A SCATTERED CHANCE IN THE NORTHWEST SECTIONS FOR THU AFTN. FLG 3322 INW 2221 HP FLG...NONE
In the hours before
Local storm report, Sep 16, 8:53 AM MST, 5 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
853 AM MST TUE SEP 16 1997
TIME(MST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0445 PM 12 N COTTONWOOD AZ FLASH FLOOD
09/13/97 YAVAPAI *** 1 INJ ***
THIRTY PEOPLE CAUGHT IN A
FLASH FLOOD IN SYCAMORE
CANYON. HIKERS HAD CROSSED
SYCAMORE CREEK, OFF THEIR
TRAIL, WHEN THEY HEARD THE
FLOOD WATERS COMING SO
TRIED TO QUICKLY CROSS BACK
OVER THE CREEK. 16 MADE IT,
14 DID NOT AND WERE
STRANDED OVERNIGHT. ONE MAN
BROKE HIS TOE RUNNING
ACROSS THE ROCKY CREEK BED.
CUOCOLocal storm report, Sep 16, 9:10 AM MST, 5 hours 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
853 AM MST TUE SEP 16 1997
TIME(MST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0445 PM 12 N COTTONWOOD AZ FLASH FLOOD
09/13/97 YAVAPAI *** 1 INJ ***
THIRTY PEOPLE CAUGHT IN A
FLASH FLOOD IN SYCAMORE
CANYON. HIKERS HAD CROSSED
SYCAMORE CREEK, OFF THEIR
TRAIL, WHEN THEY "HEARD THE
FLOOD WATERS COMING" SO
TRIED TO QUICKLY CROSS BACK
OVER THE CREEK. 16 MADE IT,
14 DID NOT AND WERE
h STRANDED OVERNIGHT. ONE MAN
BROKE HIS TOE RUNNING
ACROSS THE ROCKY CREEK BED.
CUOCOThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 5:49 PM MST | Flash Flood Warning | FGZ | Gila | 61 min |
| Sep 15, 5:49 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 61 min |
| Sep 15, 5:50 PM MST | Flash Flood Warning | FGZ | Gila | 60 min |
| Sep 15, 5:50 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 60 min |
| Sep 15, 6:54 PM MST | Flash Flood Warning | FGZ | Gila | 61 min |
| Sep 15, 6:54 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 61 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997
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.