Alert archive / Arizona / Tornado Warnings in 2018
Tornado Warning 2, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this tornado warning at Oct 4, 2018, 1:56 AM MST for Coconino County, Gila 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
- Oct 4, 2018, 1:56 AM MST (08:56 UTC)
- Expired
- Oct 4, 2018, 2:30 AM MST
- In force
- 34 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Coconino County, AZ, Gila County, AZ
The radar
The Flagstaff radar (KFSX), 34 km from the middle of the area, began a volume at 08:57 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 00:00Z, 8.9 hours before the alert went out and 100 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
- 257 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1100 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
273
WFUS55 KFGZ 040856
TORFGZ
AZC005-007-040930-
/O.NEW.KFGZ.TO.W.0002.181004T0856Z-181004T0930Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Flagstaff AZ
156 AM MST THU OCT 4 2018
The National Weather Service in Flagstaff has issued a
* Tornado Warning for...
Gila County in east central Arizona...
Coconino County in north central Arizona...
* Until 230 AM MST
* At 155 AM MST, a severe thunderstorm capable of producing a tornado
was located 7 miles southwest of Pine, or 13 miles west of Payson,
moving northeast at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Pine, Strawberry and Geronimo Boy Scout Camp.
This includes the following highways...
State Route 260 between mile markers 249 and 251.
State Route 87 between mile markers 265 and 283.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3428 11150 3433 11159 3452 11144 3445 11132
TIME...MOT...LOC 0855Z 212DEG 20KT 3430 11155
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
MCT2 follow-up statements
855
WWUS55 KFGZ 040914
SVSFGZ
Severe Weather Statement
National Weather Service Flagstaff AZ
214 AM MST THU OCT 4 2018
AZC005-007-040930-
/O.CON.KFGZ.TO.W.0002.000000T0000Z-181004T0930Z/
Gila-Coconino-
214 AM MST THU OCT 4 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 AM MST FOR GILA AND
COCONINO COUNTIES...
At 213 AM MST, a severe thunderstorm capable of producing a tornado
was located 7 miles northeast of Pine, or 16 miles north of Payson,
moving northeast at 30 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation. Rotation has weakened in the past
15 minutes.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Damage to roofs, windows, and vehicles will occur.
Tree damage is likely.
Locations impacted include...
Geronimo Boy Scout Camp.
This includes the following highways...
State Route 260 between mile markers 249 and 251.
State Route 87 between mile markers 275 and 283.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.
&&
LAT...LON 3438 11139 3444 11150 3452 11144 3445 11132
TIME...MOT...LOC 0913Z 217DEG 27KT 3447 11139
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
MCT812
WWUS55 KFGZ 040922
SVSFGZ
Severe Weather Statement
National Weather Service Flagstaff AZ
222 AM MST THU OCT 4 2018
AZC005-007-040932-
/O.EXP.KFGZ.TO.W.0002.000000T0000Z-181004T0930Z/
Gila-Coconino-
222 AM MST THU OCT 4 2018
...THE TORNADO WARNING FOR GILA AND COCONINO COUNTIES WILL EXPIRE AT
230 AM MST...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However gusty thunderstorm outflow winds are
still possible.
LAT...LON 3438 11139 3444 11150 3452 11144 3445 11132
TIME...MOT...LOC 0922Z 212DEG 20KT 3450 11137
$$
MCTThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 3, 6:09 PM MST | Severe Thunderstorm Warning | FGZ | Coconino | 23 min |
| Oct 3, 6:36 PM MST | Areal Flood Advisory | FGZ | Coconino | 114 min |
| Oct 4, 1:28 AM MST | Special Weather Statement | FGZ | 47 min | |
| Oct 4, 2:59 AM MST | Severe Thunderstorm Warning | FGZ | Coconino, Gila, Yavapai | 31 min |
Nearby
Tornado Warnings in Arizona, 2018Every tornado warning in 2018Tornadoes in 2018
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.