Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 36, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 9, 2001, 4:45 PM MST for Coconino County, Arizona. It was in force for 30 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 9, 2001, 4:45 PM MST (23:45 UTC)
- Expired
- Jul 9, 2001, 5:15 PM MST
- In force
- 30 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Coconino County, AZ
The radar
The Flagstaff radar (KFSX), 59 km from the middle of the area, began a volume at 23:47 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 12:00Z, 11.8 hours before the alert went out and 107 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1450 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 110 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 092347 SVRFLG AZC005-017-100015- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 445 PM MST MON JUL 9 2001 THE NATIONAL WEATHER SERVICE HAS EXTENDED THE * SEVERE THUNDERSTORM WARNING FOR... EXTREME SOUTHEASTERN COCONINO COUNTY IN ARIZONA WEST CENTRAL NAVAJO COUNTY IN ARIZONA THIS INCLUDES THE CITY OF WINSLOW * UNTIL 515 PM MST * AT 445 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTH OF WINSLOW...MOVING NORTHWEST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT OR PASS CLOSE TO... 7 MILES SOUTHWEST OF WINSLOW AT 455 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. RAINFALL AMOUNTS OF OVER ONE INCH ARE LIKELY IN A SHORT PERIOD WITH THIS STORM. CLEAR CREEK AND SALT CREEK SOUTH OF WINSLOW MAY HAVE INCREASED FLOW WITH THIS STORM. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3510 11061 3465 11065 3476 11089 3522 11g085 $$
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 9, 2:40 PM MST, 2 hours 5 minutes earlier.
Area forecast discussion, Jul 9, 2:40 PM MST, 2 hours 5 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 240 PM MST MON JUL 09 2001 .SYNOPSIS...SOUTHERLY FLOW WILL CONTINUE TO SPREAD MOISTURE ACROSS NORTHERN ARIZONA WITH THE PATTERN OF AFTERNOON SHOWERS AND THUNDERSTORMS CONTINUING OVER MUCH OF THE AREA THROUGH MIDWEEK. BY LATE IN THE WEEK AND THE WEEKEND A DRIER SOUTHWESTERLY FLOW WILL DEVELOP WITH THUNDERSTORM ACTIVITY CONFINED MAINLY TO THE EASTERN PORTION OF THE STATE. .DISCUSSION...PULSE TYPE TSTORMS FIRING ALONG THE HIGHER TERRAIN AND LITTLE COLORADO RIVER VALLEY ATTM. MOIST SOUTHERLY FLOW EXPECTED TO REMAIN OVER MOST OF THE CWA THROUGH MIDWEEK. NEXT FEATURE OF INTEREST FOR THE SHORT TERM IS THE INVERTED TROF MOVING WEST OUT OF THE BIG BEND AREA TOWARD SE AZ TODAY. PREFER AVN SOLUTION WITH THIS FEATURE OVER THE NEXT 24 TO 36 HOURS...BUT SATIMG SUGGESTS THIS FEATURE IS FURTHER NORTH THAN ANALYZED. AVN MOVES THIS FEATURE WESTWARD...THEN NORTHWARD INTO CENTRAL AZ TOMORROW FOR AN INCREASE IN CONVECTIVE ACTIVITY. FOR THE EXTENDED...TROF IN THE EASTERN PACIFIC COMES INTO PLAY AFTER MIDWEEK WITH SOUTHWEST FLOW MAKING A PRESENCE INTO THE WESTERN CWA BY THURSDAY. SOME DRYING EXPECTED IN WESTERN PART OF THE CWA BEGINNING ON FRIDAY AS WEST COAST TROF MOVES ON SHORE. WILL CARRY A CHANCE OF SHOWERS/TSTORMS ON THURSDAY...THEN CONTINUE DRY FORECAST FOR THE WESTERN PART OF THE CWA AND SHOWERS IN THE EAST THROUGH THE WEEKEND. TW .FGZ...NONE.
The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 1:40 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 30 min |
| Jul 9, 1:40 PM MST | Severe Thunderstorm Warning | FGZ | Apache | 30 min |
| Jul 9, 4:12 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 33 min |
| Jul 9, 4:12 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 33 min |
| Jul 9, 4:45 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 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; radar from the NEXRAD Level II archive.