Alert archive / Arizona / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 10, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 1, 2001, 11:19 AM MST for Coconino County, Arizona. It was in force for 26 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 1, 2001, 11:19 AM MST (18:19 UTC)
- Expired
- Jul 1, 2001, 11:45 AM MST
- In force
- 26 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), 95 km from the middle of the area, began a volume at 18:21 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, 6.3 hours before the alert went out and 4 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
- 51 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 2732 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- -21 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 011822 SVRFLG AZC005-011845- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 1119 AM MST SUN JUL 1 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL COCONINO COUNTY IN ARIZONA * UNTIL 1145 AM MST * AT 1119 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES WEST OF FORT VALLEY...OR ABOUT 12 MILES WEST OF FLAGSTAFF...MOVING SOUTH AT 5 MPH. * THE SEVERE THUNDERSTORM WILL AFFECT OR PASS CLOSE TO... BELLEMONT AT 1130 AM MST. AT 1115 AM...A NATIONAL WEATHER SERVICE EMPLOYEE REPORTED THREE-QUARTER INCH HAIL ALONG INTERSTATE 40 BETWEEN BELLEMONT AND FLAGSTAFF. 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. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3529 11170 3533 11191 3510 11200 3505 11?174
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 1, 9:30 AM MST, 1 hour 49 minutes earlier.
Area forecast discussion, Jul 1, 9:30 AM MST, 1 hour 49 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FLAGSTAFF AZ 930 AM MST SUN JUL 01 2001 SYNOPSIS...HIGH PRESSURE ALOFT OVER THE FOUR CORNERS AREA WILL CONTINUE TO PRODUCE AN INCREASINGLY MOIST FLOW ACROSS NORTHERN ARIZONA. A STRONGER SURGE OF MOISTURE WITH INCREASING SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED BY MID WEEK. DISCUSSION...4-CORNERS HIGH DOMINATES WEATHER PATTERN...PRODUCING A WEAK EASTERLY FLOW ACROSS CWA. SFC DP'S SLOWLY INCREASING OVER THE CWA. EASTERLY WAVE OVER TX CONTINUES ITS SLOW MOVEMENT WESTWARD AND WILL RE-ENFORCE RH UPSWING WITH TIME. INFLUX OF MID LEVEL RH INTO NORTHERN AZ EXPECTED TO CONTINUE WHILE LOWER LEVELS REMAIN DRY THRU TOMORROW. BEST INSTABILITY INDICATED NEAR NM BORDER AND OVER THE WHITE MTNS. EXPECT HIGH BASED CONVECTION WITH SCATTERED POPS OUT EAST AND ISOLATED ACTIVITY ELSEWHERE THIS PERIOD. ALL THIS HANDLED WELL IN CURRENT PKG AND NO UPDATES PLANNEgD. DB .FGZ...NONE.
In the hours before
Special weather statement, Jul 1, 8:59 AM MST, 2 hours 20 minutes before
AZZ004>018-037>040-301930- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 930 AM MST SUN JUL 01 2001 ...ISOLATED THUNDERSTORMS OVER NORTHERN ARIZONA TODAY... DISCUSSION...THE ATMOSPHERE REMAINS FAIRLY STABLE WITH ONLY LIMITED LOW LEVEL MOISTURE. SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE HIGHER TERRAIN EARLY THIS AFTERNOON...AND DEVELOP OVER THE LOWER ELEVATIONS LATER IN THE DAY. OWING TO THE LIMITED AVAILABILITY OF MOISTURE... PRECIPITATION AMOUNTS SHOULD BE LIGHT. SOME THUNDERSTORMS MAY PRODUCE BRIEF GUSTY WINDS.
Special weather statement, Jul 1, 9:30 AM MST, 1 hour 49 minutes before
AZZ004>018-037>040-301930- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FLAGSTAFF AZ 930 AM MST SUN JUL 01 2001 ...ISOLATED THUNDERSTORMS OVER NORTHERN ARIZONA TODAY... DISCUSSION...THE ATMOSPHERE REMAINS FAIRLY STABLE WITH ONLY LIMITED LOW LEVEL MOISTURE. SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE HIGHER TERRAIN EARLY THIS AFTERNOON...AND DEVELOP OVER THE LOWER ELEVATIONS LATER IN THE DAY. OWING TO THE LIMITED AVAILABILITY OF MOISTURE... PRECIPITATION AMOUNTS SHOULD BE LIGHT. SOME THUNDERSTORMS MAY PRODUCE BRIEF GUSTY WINDS.
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.