Alert archive / Arizona / Flash Flood Warnings in 1997
Flash Flood Warning 35, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Sep 11, 1997, 9:27 AM MST for Yavapai County, Arizona. It was in force for 2 hr. 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 11, 1997, 9:27 AM MST (16:27 UTC)
- Expired
- Sep 11, 1997, 11:30 AM MST
- In force
- 2 hr
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties
County Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 16:26 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, 4.5 hours before the alert went out and 98 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
- 588 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1069 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 104 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 111629 FFWFLG AZC025-111830- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 927 AM MST THU SEP 11 1997 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF AZ HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1130 AM MST FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL ARIZONA ...EASTERN YAVAPAI COUNTY AT 920 AM MST...DOPPLER RADAR INDICATED ALMOST 4 INCHES OF RAIN HAD FALLEN IN THE VICINITY OF SQUAW PEAK JUST SOUTH OF CAMP VERDE IN THE LAST TWO HOURS. A RAIN GAGE IN CAMP VERDE INDICATED 1.25 INCHES WHICH AGREES VERY WELL WITH RADAR ESTIMATES AT CAMP VERDE. RUNOFF FROM STRONG STORMS WILL FLOW INTO THE VERDE RIVER AND FLOODING IS LIKELY BETWEEN CAMP VERD$E AND CHILDS IN THE NEXT HOUR OR SO. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UPHILL TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. &
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Sep 11, 9:01 AM MST, 26 minutes earlier.
Area forecast discussion, Sep 11, 9:01 AM MST, 26 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 900 AM MST THU SEP 11 1997 SHORT DISCUSSION THIS MORNING AS ACTIVE WEATHER IN YAV CNTY IS KEEPING ME BUSY. HAVE ALREADY UPDATED MANY ZONES TO INCREASE POPS DUE TO CURRENT ACTIVITY AND NOTICABLY MORE MSTR COMPARED TO YDAY MORNING. FGZ SNDG SHOWS SIGNIFICANT INCRS IN MSTR THRU 500 MB AND CORRESPONDINGLY HIGHER INSTABILITIES. WV IMGRY BEST INDICATOR OF FRONT IN SRN NV DRAGGING FURTHER SOUTH FROM THE NRN NV S/WV. THIS SHOULD MOVE INTO NRN AZ BY AFTERNOON AND NOT ONLY MAY ACT AS TRIGGER BUT SHEAR WILL BE INCREASING SOMEWHAT AHEAD OF IT. HAVE NOT HAD A CHANCE TO LOOK AT ANY MODEL DATA FROM MORNINGS RUNS YET...XCPT FOUSV OUTPUT FROM NGM INDICATES STRONG MAX IN UVV BY 00Z FOR FLG. SHOULD CONTINUE TO BE A BUSY DAY. FLG 3-2 INW 2-2 KEIGHTON FLG...NONE
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 11:13 AM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 47 min |
| Sep 11, 11:53 AM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 77 min |
| Sep 11, 12:26 PM MST | Flash Flood Warning | FGZ | Yavapai | 44 min |
| Sep 11, 12:26 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 44 min |
| Sep 11, 1:59 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 46 min |
| Sep 11, 4:08 PM MST | Flash Flood Warning | FGZ | Coconino | 57 min |
| Sep 11, 4:08 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 57 min |
| Sep 11, 4:42 PM MST | Tornado Warning | FGZ | Coconino | 33 min |
Nearby
Flash Flood Warnings in Arizona, 1997Every flash flood 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.