Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 53, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 29, 2000, 5:57 PM MST for Apache County, Arizona. It was in force for 33 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 29, 2000, 5:57 PM MST (00:57 UTC)
- Expired
- Aug 29, 2000, 6:30 PM MST
- In force
- 33 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Apache County, AZ
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 1.0 hours before the alert went out and 234 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
- 713 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
017 WUUS55 KFGZ 300102 SVRFLG AZC001-300130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 557 PM MST TUE AUG 29 2000 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL APACHE COUNTY IN ARIZONA * UNTIL 630 PM MST * AT 557 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 23 MILES SOUTHEAST OF SANDERS...OR ABOUT 57 MILES NORTH OF SPRINGERVILLE. A SECOND SEVERE THUNDERSTORM WAS LOCATED 8 MILES SOUTHEAST OF SANDERS. BOTH STORMS WERE MOVING TO THE NORTHWEST AT 15 MPH. * THE FIRST SEVERE THUNDERSTORM WILL AFFECT OR PASS CLOSE TO... INTERSTATE 40 BETWEEN SANDERS AND HOUCK BY 615 PM MST. * THE SECOND SEVERE THUNDERSTORM WILL CROSS HIGHWAY 61 BETWEEN THE NEW MEXICO BORDER AND THE INTERSECTION OF HIGHWAYS 191 AND 61 BETWEEN 615 AND 630 PM MST. LARGE HAIL IS POSSIBLE WITH THESE SEVERE THUNDERSTORMS. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN FLAGSTAFF. LAT...LON 3485 10915 3495 10898 3548 10924 3527 10965
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 29, 2:30 PM MST, 3 hours 27 minutes earlier.
Area forecast discussion, Aug 29, 2:30 PM MST, 3 hours 27 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 230 PM MST TUE AUG 29 2000 SYNOPSIS...A VERY MOIST AND UNSTABLE SOUTH FLOW WILL CONTINUE ACROSS ARIZONA FOR THE NEXT FEW DAYS. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE THROUGH THE MIDDLE OF THE WEEK. SOME OF THESE STORMS WILL PRODUCE LOCALLY HEAVY RAINFALL TONIGHT. THERE IS A CHANCE THAT SOME STORMS WILL PRODUCE LARGE HAIL WEDNESDAY. SOUTHWEST FLOW ALOFT WILL BRING DRIER AIR INTO THE WESTERN PART OF THE STATE BY THURSDAY AND TO THE EAST BY FRIDAY. DISCUSSION...A STRONG VORT MAX IS MOVING INTO NRN AZ FROM MEXICO. THIS WILL BE THE FOCUS POINT FOR EVENING AND EARLY MORNING SHOWERS AND THUNDERSTORMS AS THE WAVE PASSES OVER THE WRN RIM BY AROUND 00Z. THERE IS A LOW TO MID LEVEL 30KT SOUTHERLY FLOW ASSOCIATED WITH THIS VORT MAX...RESULTING IN AN OROGRAPHIC CONTRIBUTION TO PRECIP OVER THE RIM. SO THERE WILL BE AREAS OF HEAVIER RAINFALL BLACK CANYON CITY AND FLAG...EAST TO SHOW LOW AND WINDOW ROCK. WILL CARRY SCAT PRECIP IN THE ERN CWA THROUGH THE NIGHT. ON WEDNESDAY...THE VORT MAX CURRENTLY OFF BAJA WILL KICK OUT AHEAD OF THE CALIFORNIA LOW. THIS WILL LIKELY SET THE STAGE FOR BETTER ORGANIZED STORMS AS INSTABILITY INCREASES. THE BEST CHANCE FOR ANY SEVERE ACTIVITY WILL BE ALONG AND NORTHEAST OF THE RIM COUNTRY. THERE IS A CHANCE OF SCATTERED PRECIP SOUTH AND WEST OF THE RIM COUNTRY...WITH A LESSER CHANCE OF SEVERE WX. WILL HAVE TO FOLLOW THE BAJA VORT MAX TO REFINE THE BEST PLACEMENT FOR SVR WX POTENTIAL. BY WEDNESDAY NIGHT...THE MOISTURE BOUNDARY IS LIKELY TO MOVE FARTHER NORTH...LEAVING A CHANCE OF PRECIP IN THE NRN AND NERN ZONES THROUGH MIDNIGHT. THURSDAY STARTS THE DRYING POSSIBILITIES...BUT NOT BEFORE A FAIR CHANCE OF STORMS OVER THE ERN CWA AND A SLIGHT CHANCE IN THE SOUTHWEST. IN THE EXTENDED...FRIDAY THROUGH SUNDAY...DRYING IS ON THE WAY...BUT IT APPEARS THAT THERE MAY BE SUFFICIENT MOISTURE AROUND FRIDAY FOR PARTLY CLOUDY SKIES AND A CHANCE OF STORMS ALONG THE HIGHER TERRAIN. BY SATURDAY AND SUNDAY THOUGH...THE SOUTHWEST FLOW WILL DRY THINGS UP FOR A MOSTY SUNNY HOLIDAY WEEKEND.k PEREZ .FGZ...NONE.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 2:42 PM MST | Severe Thunderstorm Warning | FGZ | Apache | 33 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.