Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 46, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 17, 2000, 6:23 PM MST for Gila County, Arizona. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 17, 2000, 6:23 PM MST (01:23 UTC)
- Expired
- Aug 17, 2000, 7:00 PM MST
- In force
- 37 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Gila County, AZ
The radar
The Flagstaff radar (KFSX), 59 km from the middle of the area, began a volume at 01:24 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 4:00 PM MST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Phoenix, AZ (KPSR), launched 00:00Z, 1.4 hours before the alert went out and 101 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
- 146 J/kg
- Mixed-layer CIN
- -205 J/kg
- Mixed-layer LCL
- 2669 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
959 WUUS55 KFGZ 180125 SVRFLG AZC007-180200- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 623 PM MST THU AUG 17 2000 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL GILA COUNTY IN ARIZONA * UNTIL 700 PM MST * AT 623 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTH CENTRAL GILA COUNTY...OR ABOUT 15 MILES SOUTHEAST OF PAYSON...MOVING SOUTH AT 15 TO 20 MPH. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS WASHES AND CREEKS. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE... THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM MST THURSDAY EVENING FOR ARIZONA. LAT...LON 3397 11133 3387 11108 3414 11094 3426 11115
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 17, 2:30 PM MST, 3 hours 53 minutes earlier.
Area forecast discussion, Aug 17, 2:30 PM MST, 3 hours 53 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 230 PM MST THU AUG 17 2000 SYNOPSIS...AN UPPER LEVEL DISTURBANCE AND MOISTURE FROM FORMER TROPICAL STORM BERYL WILL MOVE ACROSS SOUTHERN ARIZONA TONIGHT. AS A RESULT...SHOWERS AND THUNDERSTORMS ARE EXPECTED OVERNIGHT ACROSS MUCH OF CENTRAL ARIZONA. SOME OF THE STORMS MAY PRODUCE HEAVY RAINFALL. ON FRIDAY THE EASTERN SECTION OF THE STATE NEAR THE NEW MEXICO BORDER WILL SEE SCATTERED STORMS WITH LESS ACTIVITY EXPECTED OVER THE WESTERN SECTIONS. DISCUSSION...FORECAST FOCUS ON FLASH FLOOD POTENTIAL FOR SOUTHERN SECTIONS OF CWA TONIGHT. WILL ISSUE FLASH FLOOD WATCH FOR THIS EVENING AND TONIGHT FOR THE SOUTHERN RIM AND WHITE MOUNTAINS. DEW POINTS ACROSS SOUTHERN ARIZONA REMAIN IN THE 60S AND 70S. 18Z SOUNDINGS FROM PHX AND TUS CONTINUE TO SHOW OVER AN INCH OF PW. EASTERLY WAVE STILL PROGGED TO MOVE ACROSS AZ/MEX BORDER TONIGHT. A PIECE OF ENERGY BREAKS OFF...MOVING NORTH WITH SHEAR ZONE BISECTING THE CWA FROM SW TO NE. EXPECT THE MOISTURE TO MOVE NORTHWARD AS FLOW TURN SOUTHERLY TONIGHT. QPF PROGS INDICATE OVER AN INCH OF PRECIP POSSIBLE ACROSS SECTIONS OF SOUTH CENTRAL AZ. SHOWERS AND THUNDERSTORMS LIKELY OVERNIGHT SOUTHERN HALF OF CWA. POTENTIAL IS THERE FOR SOME OF THESE STORMS TO PRODUCE HEAVY RAINFALL AMOUNTS. NORMAL AFTERNOON CONVECTION EXPECTED TO DISSIPATE OVER NORTHERN CWA THIS EVENING. MORE STABLE CONDITIONS OVER THE WEST AND SOUTH TOMORROW AS SUBSIDENCE INDICATED BY THE MODELS. SCATTERED SHOWERS AND TSTMS TO CONTINUE OVER THE EASTERN CWA AS ENERGY AND MOISTURE MOVE TO THE NORTHEAST. EXTENDED...MEDIUM RANGES MODELS MAINTAIN HIG H PRESSURE CELL OVER THE DESERT SOUTHWEST. SEE NOTHING TO ALTER MODERATE MONSOON ACTIVITY EACH DAY. DF .FGZ...NONE.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 5:21 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 24 min |
| Aug 17, 6:30 PM MST | Flash Flood Warning | FGZ | Yavapai | 30 min |
| Aug 17, 7:29 PM MST | Flash Flood Warning | FGZ | Gila | 61 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2000Every severe thunderstorm warning in 2000
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.