Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 41, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 25, 2001, 4:40 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 25, 2001, 4:40 PM MST (23:40 UTC)
- Expired
- Jul 25, 2001, 5:15 PM MST
- In force
- 35 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Yavapai County, AZ
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 11.7 hours before the alert went out and 79 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
- 2086 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- -6 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 252342 SVRFLG AZC025-260015- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 440 PM MST WED JUL 25 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL YAVAPAI COUNTY IN ARIZONA * UNTIL 515 PM MST * AT 440 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER EXTREME EAST CENTRAL YAVAPAI COUNTY...OR ABOUT 5 MILES SOUTHEAST OF CAMP VERDE...MOVING NORTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT OR PASS OVER... HIGHWAY 260 10 MILES SOUTHEAST OF CAMP VERDE 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. LAT...LON 3451 11193 3439 11182 3453 11156 3467 11169 MAS
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 Jul 25, 2:30 PM MST, 2 hours 10 minutes earlier.
Area forecast discussion, Jul 25, 2:30 PM MST, 2 hours 10 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 230 PM MST WED JUL 25 2001 .SYNOPSIS...SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVERNIGHT AND INTO THURSDAY AS A LOW PRESSURE SYSTEM MOVES INTO NORTHERN ARIZONA. A DRIER WESTERLY FLOW WILL DEVELOP BY FRIDAY AND CONTINUE INTO WEEKEND. ONLY ISOLATED STORMS ARE EXPECTED ALONG THE NEW MEXICO BORDER BY THE WEEKEND...WITH MOSTLY SUNNY AND WARM CONDITIONS ELSEWHERE. .DISCUSSION...UPPER LOW SOUTH OF VEGAS WILL CONTINUE TO MOVE SLOWLY EAST TONIGHT AND INTO THURSDAY AFTERNOON. THE BEST DYNAMICS WITH THE LOW WILL DIMINISH TONIGHT...WITH WEAKER DYNAMICS AND A WARMING COLD POOL EXPECTED THURSDAY. ALL MODELS SHOWING THE PRONOUNCED DRYING SEEN OVER SOUTHWEST ARIZONA MOVING NORTHEASTWARD WITH TIME. DO NOT EXPECT AS RAPID A DRYING TREND AS THE AVN SHOWS...BUT DO EXPECT ACTIVITY TO BE LESS WIDESPREAD AND FARTHER EAST THURSDAY. UPPER LOW COMPLETELY OUT OF THE PICTURE FRIDAY...WITH A DRY AND FLAT FLOW SETTING UP FOR THE WEEKEND. ASIDE FROM ISOLATED ACTIVITY OVER THE FAR EASTERN ZONES...DO NOT EXPECT MORE THAN PARTLY CLOUDY SKIES. ANY CHANCE OF A RESURGENCE OF MOISTURE WILL NOT ARRIVE UNTIL MONDAY AT THE EARLIEST...AND THAT ASSUMES THE NEXT WEST COAST TROUGH WILL NOT BE AS STRONG AS THE NEW AVN IS SUGGESTING. FOR NOW...WILL PUT A CHANCE BACK INTO THE EASTERN ZONES MONDAY THROUGH WEDNESDAY...BUT WILL LEAVE THE OTHER ZONES DRY. PETERSON. .FGZ...NONE.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 11:15 AM MST | Severe Thunderstorm Warning | FGZ | Coconino | 30 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2001Every severe thunderstorm warning in 2001
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.