Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 22, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 4, 1997, 5:57 PM MST for Gila County, Arizona. It was in force for 63 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 4, 1997, 5:57 PM MST (00:57 UTC)
- Expired
- Aug 4, 1997, 7:00 PM MST
- In force
- 63 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties
County Gila County, AZ
The radar
The Flagstaff radar (KFSX), 93 km from the middle of the area, began a volume at 00:59 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 4, 6:30 PM MST | Thunderstorm Wind 50 | Strawberry, AZ | Strong thunderstorm winds downed several telephone poles in Strawberry. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 1.0 hours before the alert went out and 181 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
- 98 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 2932 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Aug 4, 1:55 PM MST, 4 hours 2 minutes earlier.
Area forecast discussion, Aug 4, 1:55 PM MST, 4 hours 2 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 150 PM MST MON AUG 04 1997 BUSY AFTERNOON HERE AT FLG...WITH SEVERAL FFW'S ISSUED WITH SOME FLOODING REPORTED.. FROM A QUICK GLANCE AT 12Z DATA MODELS INDICATING LITTLE CHANGE ON TAP FOR THE NEXT FEW DAYS..ALBEIT A BIT OF DRYING WILL OCCUR. VORT MAX OVER NW AZ CONTINUES TO EXIT THE STATE...BUT WITH LOTS OF LOW LEVEL MOISTURE IN PLACE...THIS ALLOWED SOME HEAVY RAIN PRODUCING THUNDERSTORMS OVER THE AREA. ONE REPORT RECEIVED OF 2 INCHES OF RAIN IN HALF HOUR. FOR THE LONGER TERM...WILL KEEP SCATTERED POPS FOR THE NEXT FEW DAYS...AS THERE IS NOT MUCH SIGH OF BREAKING OUT OF THE PATTERN. FOR TEMPS...NOT MUCH CHANGE HERE EITHER...AS MAX TEMPS WILL DEPEND MAINLY ON CLOUD COVER...EXPECT A BIT OF WARMING OVER THE NEXT FEW DAYS...AS SOUTHERLY FLOW CONTINUES...WITH LESS CLOUDS TO PROVIDE A BIT MORE DAYTIME HEATING. FLG 423 INW 522 FLG...FLASH FLOOD WATCH UNTIL 5PM FOR ZONES 009 012 013 015 016
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 5:02 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 48 min |
| Aug 4, 5:30 PM MST | Flash Flood Warning | FGZ | Gila | 90 min |
| Aug 4, 5:57 PM MST | Flash Flood Warning | FGZ | Gila | 63 min |
| Aug 4, 6:46 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 44 min |
| Aug 4, 6:57 PM MST | Flash Flood Warning | FGZ | Gila | 33 min |
| Aug 4, 6:57 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 33 min |
| Aug 4, 7:22 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 38 min |
| Aug 4, 7:36 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 54 min |
| Aug 4, 7:49 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 41 min |
| Aug 5, 11:42 AM MST | Severe Thunderstorm Warning | FGZ | Coconino | 63 min |
| Aug 5, 2:16 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 49 min |
| Aug 5, 2:45 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 50 min |
| Aug 5, 3:20 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 40 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.