Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 32, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 7, 2000, 4:50 PM MST for Coconino County, Yavapai County, Arizona. It was in force for 40 min. 1 report came from 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, with what was reported inside it.
The facts
- Issued
- Aug 7, 2000, 4:50 PM MST (23:50 UTC)
- Expired
- Aug 7, 2000, 5:30 PM MST
- In force
- 40 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Coconino County, AZ, Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 53 km from the middle of the area, began a volume at 23:51 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 7, 5:06 PM MST | Hail 1 | Rimrock, AZ | A thrunderstorm produced hail, and strong wind in the Rimrock area. There were reports of one inch hail and wind damaged roofs. |
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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 11.8 hours before the alert went out and 62 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
- 212 J/kg
- Mixed-layer CIN
- -189 J/kg
- Mixed-layer LCL
- 2066 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KFGZ 072351 SVRFLG AZC005-025-080030- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...FOR LARGE HAIL AND STRONG WIND NATIONAL WEATHER SERVICE FLAGSTAFF AZ 450 PM MST MON AUG 7 2000 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL YAVAPAI COUNTY IN ARIZONA * UNTIL 530 PM MST * AT 450 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES SOUTHEAST OF COTTONWOOD...OR ABOUT 6 MILES NORTH OF CAMP VERDE...MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... OVER RIMROCK...LAKE MONTEZUMA AT 500 PM MST OVER I-17 500 PM MST VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. 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 3476 11192 3458 11194 3452 11153 3474 11150
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 7, 2:45 PM MST, 2 hours 5 minutes earlier.
Area forecast discussion, Aug 7, 2:45 PM MST, 2 hours 5 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 245 PM MST MON AUG 7 2000 SYNOPSIS...HIGH PRESSURE ALOFT WILL MOVE INTO COLORADO BY TOMORROW. WIND FLOW AROUND THE HIGH WILL CONTINUE TO PUSH MOISTURE INTO THE STATE FROM THE EAST. THE PATTERN OF AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE THROUGH THE WEEK. THE MOST SIGNIFICANT ACTIVITY WILL OCCUR OVER THE MOGOLLON RIM...WHITE MOUNTAINS...GILA AND YAVAPAI COUNTIES. LITTLE CHANGE IN THIS PATTERN IS SEEN THROUGH THE END OF THE WEEK. DISCUSSION...H5 RIDGE AXIS SLOWLY MARCHING EASTWARD. CENTER TO ANCHOR ITSELF OVER COLORADO AND INTENSIFY NEXT 48 HRS KEEPING STATE UNDER ITS INFLUENCE. MODEL CONTINUE TO SHOW SEEPAGE OF MID LEVEL RH IN CWA. PREFER MOISTER ETA OVER DRYER AVN. PW SAT IMAGERY INDICATING 1-2 INCHES PW VALUES OVER SOUTHERN PERIPHERY OF CWA AND MODEL PW OUTPUT KEEPS PW VALUES OF 1 INCH OVER MUCH OF SOUTHERN CWA THRU THURSDAY. MOISTURE ALSO INCREASING OVER NORTHERN HALF OF CWA WITH DP'S THERE UP 4 TO 8 DEGREES THIS AFTERNOON. MODELS SHOWING NO STABILIZING INFLUENCES AND SEE NO REASON WHY CURRENT DIURNAL CONVECTIVE PATTERN WILL CHANGE. EXPECT ACTIVE AFTERNOONS THRU THIS FCST PERIOD...WITH STORMS PRODUCING HEAVY RAINFALL AND THE THREAT OF HAIL AND GUSTY WINDS. EXTENDED...PATTERN STATIC WITH HI PRESSURE TO DOMINATE CWA. H5 CENTER TO REMAIN OVER COLORADO WITH LIGHT FLOW ALOFT. NOTHING TO SCOUR OUT MOISTURE SO WILL CONTINUE THE STANDARD DIURNAL CONVECTIVE FORECAST. DF .FGZ...NONE
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.