Alert archive / Arizona / Tornado Warnings in 2004

Tornado Warning 4, NWS Flagstaff, AZ

September 29, 2004Navajo County, Arizona

NWS Flagstaff, AZ issued this tornado warning at Sep 29, 2004, 1:41 PM MDT for Navajo County, Arizona. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 29, 2004, 1:41 PM MDT (19:41 UTC)
Expired
Sep 29, 2004, 2:15 PM MDT
In force
34 min
Issued by
NWS Flagstaff, AZ
Area
Counties, with a storm outline in the text

County Navajo County, AZ

The radar

The Flagstaff radar (KFSX), 89 km from the middle of the area, began a volume at 19:41 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, 7.7 hours before the alert went out and 118 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 2004-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 23 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 2004-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 square meters per square second.193958Sfc1 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
23 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
1043 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

000 
WFUS55 KFGZ 291941
TORFGZ
AZC017-292015-
/X.NEW.KFGZ.TO.W.0002.040929T1941Z-040929T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1241 PM MST WED SEP 29 2004

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL NAVAJO COUNTY IN NORTHEAST ARIZONA

* UNTIL 115 PM MST

* AT 1233 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MILEPOST
  355 ON SR 87...OR ABOUT 10 MILES EAST OF WINSLOW...MOVING NORTHEAST
  AT 15 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  MILEPOST 360 ON SR 87 BY 1255 PM MST
  MILEPOST 365 ON SR 87 BY 110 PM MST
  6 MILES SOUTH OF MILEPOST 370 ON SR 87 BY 115 PM MST

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3509 11067 3497 11050 3521 11023 3535 11045

$$

DF

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 29, 12:56 PM MDTSevere Thunderstorm WarningFGZCoconino34 min
Sep 29, 1:54 PM MDTSevere Thunderstorm WarningFGZApache, Navajo66 min
Sep 29, 2:01 PM MDTSevere Thunderstorm WarningFGZCoconino29 min
Sep 29, 2:52 PM MDTSevere Thunderstorm WarningFGZCoconino23 min
Sep 29, 2:57 PM MDTSevere Thunderstorm WarningFGZApache63 min
Sep 29, 5:48 PM MDTSevere Thunderstorm WarningFGZApache42 min

Nearby

Tornado Warnings in Arizona, 2004Every tornado warning in 2004Tornadoes in 2004

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.