Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 44, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 15, 2000, 4:12 PM MST for Yavapai 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 counties it named.
The facts
- Issued
- Aug 15, 2000, 4:12 PM MST (23:12 UTC)
- Expired
- Aug 15, 2000, 4:45 PM MST
- In force
- 33 min
- 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 23:15 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
Phoenix, AZ (KPSR), launched 12:00Z, 11.2 hours before the alert went out and 141 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
- 183 J/kg
- Mixed-layer CIN
- -343 J/kg
- Mixed-layer LCL
- 2571 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KFGZ 152314 SVRFLG AZC025-152345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 412 PM MST TUE AUG 15 2000 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL YAVAPAI COUNTY IN ARIZONA THIS INCLUDES THE CITIES OF...CAMP VERDE...COTTONWOOD-VERDE VILLAGE * UNTIL 445 PM MST * AT 412 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES SOUTHEAST OF CAMP VERDE...MOVING NORTHWEST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT OR PASS CLOSE TO... I-17 AT 420 PM 9 MILES SOUTHWEST OF CORNVILLE AT 440 PM MST 3 MILES NORTHEAST OF CHERRY...7 MILES SOUTH OF COTTONWOOD-VERDE VILLAGE AT 445 PM MST 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 3430 11169 3452 11156 3476 11195 3458 11213
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 15, 2:30 PM MST, 1 hour 42 minutes earlier.
Area forecast discussion, Aug 15, 2:30 PM MST, 1 hour 42 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 230 PM MST TUE AUG 15 2000 SYNOPSIS...HIGH PRESSURE WILL REMAIN OVER THE DESERT SOUTHWEST THROUGH MUCH OF THE WEEK. MOISTURE WILL INCREASE ACROSS THE REGION BY THURSDAY. EXPECT SHOWERS AND THUNDERSTORMS TO CONTINUE THE NEXT DAY OR TWO...AND THEN INCREASE IN COVERAGE BY THE MIDDLE TO LATTER PARTS OF THE WEEK. TEMPERATURES WILL REMAIN AROUND SEASONAL NORMALS. DISCUSSION...A STRONG MID-LEVEL RIDGE WILL REMAIN OVER THE SOUTHWEST UNITED STATES THE NEXT TWO DAYS WITH THE CIRCULATION CENTER REMAINING NEAR THE FOUR CORNERS. THERE ARE SOME DIFFERENCES BETWEEN THE NGM/ETA AND THE AVN MODLES. THE AVN KEEPS THE 500 MB RIDGE OVER THE FOUR CORNERS WHILE THE ETA/NGM MOVE IT INTO SOUTHERN NEVADA. WITH A TROUGH APPROACHING IN THE PACIFIC THINK THE AVN IS HANDLING THE LARGE SCALE PATTERN THE BEST AND THAT IS HOW THE FORECAST WILL BE WEIGHTED. FLOW AT 500 MB WILL CONTINUE OUT OF THE SOUTHEAST ON WEDENSDAY FOR A NEAR REPEAT OF THE WEATHER ON TODAY. FOR THURSDAY THE FLOW WILL BECOME MORE SOUTHERLY. ON WEDNESDAY DRIER AIR WILL CONTINUE TO MOVE INTO NORTHERN ARIZONA FROM THE SOUTHEAST. HOWEVER...500 MB TEMPERATURES WILL BE IN THE -7 TO -8 DEGREE C RANGE WITH NEAR ADIABATIC MID-LEVEL LAPSE RATES. LOOKS LIKE A HIGH BASED...DRY LIGHTNING TYPE OF DAY AGAIN ON WEDNESDAY WITH THE WETTEST THUNDERSTORMS OVER THE FAR WEST. ON THURSDAY MID TO UPPER INVERTED TROUGH NOW OVER NORTHEAST MEXICO (ASSOCIATED WITH ONCE TROPICAL STORM BERYL) WILL MOVE INTO NORTHWEST MEXICO. EXPECT MCS ACTIVITY TO PICK UP BY WEDNESDAY NIGHT OVER NORTHWEST MEXICO AND WITH MORE SOUTHERLY FLOW THE AIR MASS SHOULD GRADUALLY BECOME MORE MOIST OVER THE WESTERN TWO-THIRDS OF NORTHERN ARIZONA. THE POSITION OF THE HIGH OVER THE FOUR CORNERS WILL LIKELY LIMIT MOISTURE VALUES OVER THE NORTHEAST AND EAST WITH ISOLATED HIGH BASED THUNDERSTORMS CONTINUING OVER THOSE LOCATIONS. IN THE EXTENDED...BROAD RIDGE REMAINS OVER THE SOUTHWEST UNITED STATES WITH THE CIRCULATION CENTER NEAR THE FOUR CORNERS REGION. EXPECT A CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY...ESPECIALLY OVER THE MOGOLLON RIM AND AND LOCATIONS SOUTH AND WEST. MCCOLLUM .FGZ...NONE.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 2:47 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Yavapai | 28 min |
| Aug 15, 3:12 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 33 min |
| Aug 15, 4:27 PM MST | Tornado Warning | FGZ | Yavapai | 33 min |
| Aug 15, 4:56 PM MST | Tornado Warning | FGZ | Yavapai | 19 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.