Alert archive / Arizona / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 63, NWS Flagstaff, AZ

October 8, 2000Apache County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Oct 8, 2000, 2:29 PM MST for Apache County, Arizona. It was in force for 31 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
Oct 8, 2000, 2:29 PM MST (21:29 UTC)
Expired
Oct 8, 2000, 3:00 PM MST
In force
31 min
Issued by
NWS Flagstaff, AZ
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Apache County, AZ

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.5 hours before the alert went out and 256 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.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2000-10-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2000-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
8 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
1164 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
326 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

313 
WUUS55 KFGZ 082130
SVRFLG
AZC001-082200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
229 PM MST SUN OCT 8 2000

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL APACHE COUNTY IN ARIZONA

* UNTIL 300 PM MST

* AT 229 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES WEST OF LUKACHUKAI...OR ABOUT 17
  MILES NORTHEAST OF CHINLE...MOVING EAST-NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT OR PASS CLOSE TO...
  LUKACHUKAI AT 240 PM MST
  TSAILE AT 245 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.

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 3640 10952 3627 10936 3629 10911 3655 10922

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 Oct 8, 10:10 AM MST, 4 hours 19 minutes earlier.

Area forecast discussion, Oct 8, 10:10 AM MST, 4 hours 19 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1010 AM MST SUN OCT 08 2000

SYNOPSIS...EXPECT COLDER TEMPERATURES WITH SCATTERED SHOWERS AND
THUNDERSTORMS EAST OF FLAGSTAFF TODAY...WITH PARTLY SUNNY SKIES AND
ISOLATED SHOWERS AND THUNDERSTORMS WEST OF FLAGSTAFF. SKIES WILL
CLEAR TONIGHT WITH LITTLE OR NO PRECIPITATION EXPECTED MONDAY AND
TUESDAY. A PACIFIC STORM SYSTEM MAY REACH ARIZONA
WEDNESDAY...BRINGING WINDY AND COOLER CONDITIONS...WITH RAIN AND A
CHANCE OF HIGH ELEVATION SNOW INTO THURSDAY.

DISCUSSION...HAVE STALLED A BIT THIS MORNING WAITING FOR MODEL DATA
AND SURFACE OBS TO COME IN. SCENARIO ACROSS THE STATE IS NOTHING
LIKE WHAT HAS BEEN ADVERTISED FOR SEVERAL DAYS BY ALL THE MODELS.
DEEP MOISTURE FROM THE REMNANTS OF KEITH NEVER MADE IT HERE...AND
MOISTURE ASSOCIATED WITH BACKDOOR COLD FRONT HAS BEEN MINIMAL. DECENT
LOOKING S/WV MOVING ACROSS THE NORTHERN SECTIONS OF THE STATE HAS
KEPT SOME CLOUDS AND WEAK CONVECTION GOING OVER THE EASTERN
THIRD...BUT THE WEST ACTUALLY IS DRYING AND STABLE. THE FRONT HAS
PUSHED OUT ACROSS THE DESERTS AND MAY DEVELOP SOME SHOWER ACTIVITY
LATER IN THE DAY WHICH COULD TRANSLATE NORTHWARD INTO YAVAPAI AND
SOUTHERN COCONINO COUNTY...BUT THIS DOES NOT LOOK LIKE A BIG EVENT.
THINK HIGHEST POPS ARE WHERE THEY BELONG...OUT EAST. LOWER OR NO
POPS WEST OF FLG LOOK GOOD. WILL MAKE A FEW UPDATES TO REFLECT THE
CURRENT MOISTURE TRENDS...AND MAY ALSO NEED TO RAISE SOME HIGH
TEMPERATURES OVER THE HIGH TERRAIN WHERE SHALLOW AND COOLER AIR WILL
NOT HAVE AS MUCH OF AN EFFECT. MID-WEEK SCENARIO STILL LOOKS
PROMISING...MORE ON THIS IN THE AFTERNOON. PETERSON.

.FGZ...NONE.

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.