Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 1, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Mar 28, 2000, 5:55 PM MST for Yavapai County, Arizona. It was in force for 35 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
- Mar 28, 2000, 5:55 PM MST (00:55 UTC)
- Expired
- Mar 28, 2000, 6:30 PM MST
- In force
- 35 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 00:58 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 00:00Z, 0.9 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
- 85 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 839 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 24 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 290106 COR SVRFLG AZC025-290130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTED NATIONAL WEATHER SERVICE FLAGSTAFF AZ 555 PM MST TUE MAR 28 2000 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN YAVAPAI COUNTY IN CENTRAL ARIZONA * UNTIL 630 PM MST * AT 555 PM MST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES WEST OF CAMP VERDE... MOVING SOUTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... CAMP VERDE AT 615 PM MST STRONG DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! KM NNNN
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 Mar 28, 2:46 PM MST, 3 hours 9 minutes earlier.
Area forecast discussion, Mar 28, 2:46 PM MST, 3 hours 9 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 300 PM TUE MAR 28 2000 SYNOPSIS...RAIN AND HIGH ELEVATION SNOW SHOWERS...ALONG WITH ISOLATED THUNDERSTORMS...WILL CONTINUE THROUGH THIS EVENING WITH SHOWER ACTIVITY DECREASING OVERNIGHT. SEVERAL WEAK DISTURBANCES WILL MOVE ACROSS THE STATE OVER THE NEXT FEW DAYS AND WILL BRING A CHANCE FOR SHOWERS EACH DAY. HIGH PRESSURE WILL BEGIN A DRYING AND WARMING TREND BY THE WEEKEND. DISCUSSION...LOW PRESSURE SYSTEM ALOFT HAS MOVED INTO CENTRAL NM DURING THE DAY. DEEP MOISTURE AND LOW CLOUDS COVERS MUCH OF THE STATE THIS AFTERNOON WITH AREAS OF LIGHT RAIN AND MOUNTAIN SNOW SHOWERS...AND A FEW THUNDERSTORMS...CONTINUING. FLOW ALOFT HAS BECOME WEAK ON THE NORTH SIDE OF THE NM CIRCULATION WITH A WELL-DEFINED DEFORMATION ZONE PRESENT OVER CWFA. NEXT WAVE UPSTREAM IS ALREADY MOVING INTO THE CWFA THIS AFTERNOON WITH AN INCREASE IN WINDS ALOFT AND STEEPENING THE LAPSE RATES SLIGHTLY. LI'S ARE IN THE -2 TO -4 RANGE THIS AFTERNOON AND WILL REMAIN UNSTABLE INTO THE EARLY EVENING HOURS. THUS...EXPECT SHOWERS AND THUNDERSTORMS TO PERSIST FOR AT LEAST A FEW HOURS INTO THE 1ST PERIOD. RUC AND ETA SIMILAR IN THIS FEATURE AND INDICATE THAT PRECIP ACTIVITY WILL DIMINISH THIS EVENING FROM WEST TO EAST...BUT PROBABLY NOT END COMPLETELY...ESPECIALLY IN THE NE ZONES. ETA AND AVN CONTINUE TO EXHIBIT BROAD CYCLONIC TROUGH DEVELOPING OVER THE SOUTHWEST THROUGH 4TH PERIOD. THIS WILL LIKELY KEEP TEMPS NEAR OR BELOW SEASONAL NORMALS AND MAINTAIN A CHANCE OF SHOWERS EACH DAY. EXTENDED...ECMWF...MRF...AND CDN MODELS VERY SIMILAR IN ALLOWING CLOSED LOW TO SAG TO THE SOUTHWEST DURING THE EXTENDED PERIOD. DIFFERENCES ARISE AS TO HOW FAR TO THE SOUTHWEST IT WILL GO...WHEN IT WILL EJECT...AND TRAJECTORY OF SYSTEM WHEN/IF IT EJECTS. FOR NOW WILL GO WITH UNSETTLED WEATHER ON DAY 3 AND DECREASE CLOUDS WITH WARMING TEMPERATURES ON DAYS 4 AND 5. DB. .FGZ...NONE.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 6:30 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 40 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.