Alert archive / Arizona / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 47, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Aug 22, 2000, 1:58 PM MST for Coconino County, Arizona. It was in force for 32 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 22, 2000, 1:58 PM MST (20:58 UTC)
- Expired
- Aug 22, 2000, 2:30 PM MST
- In force
- 32 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties
County Coconino County, AZ
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.0 hours before the alert went out and 68 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
- 30 J/kg
- Mixed-layer CIN
- -208 J/kg
- Mixed-layer LCL
- 2040 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 189 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 222059 SVRFLG AZC005-222130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 158 PM MST TUE AUG 22 2000 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL COCONINO COUNTY IN ARIZONA * UNTIL 230 PM MST * AT 158 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER CENTRAL COCONINO COUNTY...OR ABOUT 24 MILES NORTH OF FLAGSTAFF...MOVING NORTH AT 10 MPH. IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. 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. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. 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 3546 11179 3548 11157 3577 11157 3575 11184
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 22, 9:00 AM MST, 4 hours 58 minutes earlier.
Area forecast discussion, Aug 22, 9:00 AM MST, 4 hours 58 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 900 AM MST TUE AUG 22 2000 SYNOPSIS...SOUTHEASTERLY WINDS ALOFT WILL KEEP A MOIST FLOW ACROSS NORTHERN ARIZONA THROUGH THE END OF THE WEEK. AS A RESULT... SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED EACH AFTERNOON AND EVENING INTO THE WEEKEND. DISCUSSION...SOUTH TO SOUTHEAST FLOW ALOFT WILL CONTINUE ACROSS THE COUNTY WARNING AREA (CWA) INTO WEDNESDAY. THIS FLOW WILL BRING MOISTURE INTO ARIZONA FROM THUNDERSTORM ACTIVITY IN MEXICO. THE MORNING SOUNDING AT FLAGSTAFF WAS PRETTY UNSTABLE WITH A CONVECTIVE TEMPERATURE OF 75 DEGREES AND NO CAP. ISOLATED SHOWERS BREAKING OUT ALREADY DURING THE MID MORNING AND THIS ACTIVITY SHOULD INCREASE THROUGH THE DAY. A NUMBER OF FACTORS IN FAVOR OF A RELATIVELY SHOWERY DAY...ESPECIALLY OVER THE MOGOLLON RIM AND NORTHERN GILA AND YAVAPAI COUNTIES. DEEP SOUTHERLY FLOW WILL CONTINUE TO ADVECT MOISTURE INTO NORTHERN ARIZONA FROM THE SOUTH. AT YUMA ANOTHER DEEP SURGE OF LOW LEVEL MOISTURE IS TAKING PLACE AND WITH THE CURRENT FLOW PATTERN SHOULD PROCEED INTO PORTIONS OF YAVAPAI AND GILA COUNTIES. ABOVE 500 MB THERE WILL BE WEAK UPWARD MOTION TODAY WHICH WILL ACT TO DESTABILIZED THE ATMOSPHERE EVEN FURTHER. WITH NO CAP THUNDERSTORMS WILL BE FAVORED OVER AND NEAR THE SOUTH FACING TERRAIN GRADIENTS. THUNDERSTORMS WILL BE MOST NUMEROUS OVER THE SOUTHWEST PORTION OF THE CWA AND MORE ISOLATED AND ANCHORED TO THE HIGH TERRAIN ELSEWHERE. CURRENT FORECAST IN GOOD SHAPE WITH NOT UPDATES. MCCOLLUM .FGZ...NONE.
In the hours before
Special weather statement, Aug 22, 9:30 AM MST, 4 hours 28 minutes before
TTAA00 KFGZ DDHHMM AZZ004>018-037>040-222030- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 930 AM MST TUE AUG 22 2000 ...SCATTERED HEAVY RAIN PRODUCING THUNDERSTORMS EXPECTED ACROSS THE MOGOLLON RIM AND NORTHERN GILA AND YAVAPAI COUNTIES... SPOTTER REPORTS OF HAIL...GUSTY WINDS AND HEAVY RAIN REQUESTED. MOISTURE WILL BE ON THE INCREASE OVER NORTHERN ARIZONA TODAY WITH SCATTERED SHOWERS AND THUNDERSTORMS...ESPECIALLY OVER THE MOGOLLON RIM...NORTHERN GILA AND NORTHERN YAVAPAI COUNTY. STORMS TODAY ARE EXPECTED TO PRODUCE HEAVY RAIN WITH LOCAL RAINFALL AMOUNTS OF 2 TO 4 INCHES AND SOME LOCAL FLOODING POSSIBLE. AS ALWAYS...EXCERCISE LIGHTNING PRECAUTIONS IF A THUNDERSTORM APPROACHES YOUR AREA. THUNDERSTORM ACTIVITY SHOULD DIMINISH OVERNIGHT. THE HAZARDOUS WEATHER OUTLOOK GIVES PRELIMINARY INFORMATION FOR THE POSSIBILITY OF WEATHER THAT COULD BECOME SEVERE...DAMAGING WINDS IN EXCESS OF 57 MPH...HAIL 3/4 INCH IN DIAMETER OR LARGER...AND HEAVY RAINFALL THAT COULD CAUSE FLOODING OR RUNNING WASHES. WHEN HAZARDOUS WEATHER BEGINS...IMPORTANT LIFE SAVING INFORMATION WILL BE PROVIDED IN SHORT TERM FORECASTS...SEVERE WEATHER AND FLOOD WARNINGS ...AND FOLLOW-UP STATEMENTS. MCCOLLUM
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.