Alert archive / Arizona / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 94, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Sep 15, 1997, 12:40 PM MST for Apache County, Arizona. It was in force for 45 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 15, 1997, 12:40 PM MST (19:40 UTC)
- Expired
- Sep 15, 1997, 1:25 PM MST
- In force
- 45 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties
County Apache County, AZ
The radar
The Flagstaff radar (KFSX), 181 km from the middle of the area, began a volume at 19:43 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, 7.7 hours before the alert went out and 210 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
- 611 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 702 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
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 Sep 15, 9:11 AM MST, 3 hours 29 minutes earlier.
Area forecast discussion, Sep 15, 9:11 AM MST, 3 hours 29 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 900 AM MST MON SEP 15 1997 SAT IMGRY SHWS MID/HGH LVL MOISTURE FRM LINDA CONTS TO BE CAUGHT UP IN THE SWRLY FLW AND PULLED NEWRD ACRS OUR RGN. MESO ETA AND NEW ETA CLRLY SHW WK DSTRBNC OVR NWRN AZ ERLY THIS AM WHCH IS ENHANCING ACTVTY ACRS NRN AZ ATTM. THIS SYS PROGGED TO BE KCKD NEWRD INTO SWRN CO BY 00Z THIS EVE AS STRNG SHRT WV RTNG AROUND BASE OF TROF OVR THE PAC NW MOVES INTO W CNTRL UT LTR TDY. THIS WILL ALLOW THE TROF IN THE NW TO FINALLY OPEN UP AND MOVE EWRD INTO THE NRN PLNS. XPCT THIS TO LWR HGHTS AND PROVIDE A MORE PRONOUNCED SWRLY FLW ALFT OVER MAINLY NRN AZ BY TOMORROW AS UPPR RDG OVR THE SW IS SUPPRESSED TO THE S. THIS MAY CUT DWN ON ACTVTY SIGNIFICANTLY OVR THE FAR N AND NW TOMORROW BUT ALWYS TKS SM TM TO COMPLETELY DRY OUT THE LWR LVLS SO WILL NOT BE TOO QUICK TO DRY THNGS OUT UP THERE. WILL TK A BTTR LUK AT THIS FOR THE AFTN PCKG. IN THE MEANTM...WTH DEEP MOISTURE AXS LYNG SW-NE ACRS MCH OF OUR RGN XPCT ANTHR RTHR ACTV DY ACRS OUR CWA TDY. FRST WK SYS WILL EXIT THE NE LTR TDY BUT GUD UVV AHD OF STRNGR SYS SLIDING ACRS NV INTO WRN UT LTR TDY WILL HLP TO KP THNGS GOING ESPCLLY WRN AND NRN SCTNS. FFA LUKS GUD FOR TDY FOR THESE SCTNS. OTHR AREAS SHUD SEE MDT AMNT OF ACTVTY TDY WTH SCT SHWRS AND EMBD TSTMS...THO EXTNSV CLD CVR MAY INHIBIT STRNG CONVECTION. NO UPDATES PLANNED. KHW FLG 545 INW 333 FLG...FLASH FLOOD WATCH ZONES 4>8 TIL 04Z.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 12:40 PM MST | Flash Flood Warning | FGZ | Apache | 45 min |
| Sep 15, 2:59 PM MST | Flash Flood Warning | FGZ | Coconino, Yavapai | 2 hr |
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.