Alert archive / Arizona / Tornado Warnings in 1999
Tornado Warning 3, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this tornado warning at Sep 14, 1999, 4:02 PM MST for Yavapai County, Arizona. It was in force for 33 min. 5 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 14, 1999, 4:02 PM MST (23:02 UTC)
- Expired
- Sep 14, 1999, 4:35 PM MST
- In force
- 33 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Whole counties
County Yavapai County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 14, 4:22 PM MST | Tornado F0 | Prescott, AZ | Law enforcement officials reported a tornado touching down briefly west of the Prescott Country Club. |
| Sep 14, 4:24 PM MST | Hail 0.75 | Prescott, AZ | |
| Sep 14, 4:25 PM MST | Hail 0.75 | Dewey, AZ | |
| Sep 14, 4:25 PM MST | Thunderstorm Wind 52 | Dewey, AZ | |
| Sep 14, 4:28 PM MST | Hail 1 | Black Canyon City, AZ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 14, 1:45 PM MST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 11.0 hours before the alert went out and 98 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
- 60 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1908 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 189 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFLG 142306 RRA TORFLG AZC025-142335- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 402 PM MST TUE SEP 14 1999 THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL YAVAPAIN COUNTY IN CENTRAL ARIZONA SOUTHEASTERN YAVAPAI COUNTY IN CENTRAL ARIZONA * UNTIL 435 PM MST * AT 401 PM MST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A DEVELOPING TORNADO 4 MILES WEST OF BLACK CANYON CITY... MOVING SOUTHEAST AT 25 MPH. * THIS TORNADIC STORM IS EXPECTED TO BE NEAR... BLACK CANYON CITY AT 410 PM MST ROCK SPRINGS AT 410 PM MST IF A TORNADO IS ON THE GROUND GO TO THE BASEMENT! IF A BASEMENT IS NOT AVAILABLE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! JD
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Sep 14, 2:45 PM MST, 1 hour 17 minutes earlier.
Area forecast discussion, Sep 14, 2:45 PM MST, 1 hour 17 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
245 PM MST TUE SEP 14 1999
SYNOPSIS...A PACIFIC WEATHER DISTURBANCE WILL CONTINUE MOVING
ACROSS NORTHERN ARIZONA THROUGH WEDNESDAY...BRINGING CLOUDY SKIES
AND WIDESPREAD SHOWERS AND THUNDERSTORMS. A DRYING TREND WILL BEGIN
ON FRIDAY BUT SOME MOISTURE ALONG WITH A CHANCE OF THUNDERSTORMS
WILL LINGER OVER EASTERN ARIZONA THROUGH THE WEEKEND.
DISCUSSION...A SHORT WAVE TROUGH CONTINUES TO MOVE THRU NORTHERN
ARIZONA FROM THE WEST. A REAR ENTRANCE REGION OF A JET MAX WILL
EXTEND ACROSS NORTHERN ARIZONA WITH A Q-VECTOR ANALYSIS INDICATING
UPWARD FORCING THROUGH TONIGHT. AROUND THE 700 MB LEVEL
ANTICYCLONIC CIRCULATION OVER FAR SOUTHEAST ARIZONA CONTINUES TO
ADVECT MOISTURE INTO WESTERN AND CENTRAL ARIZONA.
SHOWERS AND THUNDERSTORMS WILL BE WIDESPREAD TONIGHT AND SCATTERED
TSRA WILL EXTEND INTO WEDNESDAY. WITH PERSISTENT MOIST FLOW FROM
THE SOUTHWEST...CANNOT RULE OUT SOME LOCALIZED FLOODING ESPECIALLY
NEAR THE MOGOLLON RIM WHERE CELL TRAINING MAY OCCUR. WE WILL BE
COVERED WITH THE FLASH FLOOD WATCH THROUGH MIDNIGHT. LATER SHIFT
WILL HAVE TO WATCH DEVELOPMENTS AND EXTEND OR CANCEL AS NEEDED.
STORMS ARE LIKELY TO CONTINUE LATE INTO THE NIGHT. THIS SYSTEM WILL
BE SLOW TO CLEAR THE AREA.
PEREZ
.FLG...SEVERE THUNDERSTORM WATCH FOR SOUTHERN YAVAPAI...NORTHERN
GILA AND EXTREME SOUTHERN NAVAJO AND APACHE COUNTIES
UNTIL 700 PM MST
FLASH FLOOD WATCH FOR YAVAPAI...NORTHERN GILA AND THE
SOUTHERN TWO THIRDS OF COCONINO COUNTY UNTIL MIDNIGHTIn the hours before
Local storm report, Sep 14, 2:13 PM MST, 1 hour 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
213 PM MST TUE SEP 14 1999
TIME(MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1038 AM PRESCOTT AZ 1 INCH HAIL
09/14/99 YAVAPAI QUARTER SIZED HAIL
1100 AM PRESCOTT VALLEY AZ .75 INCH HAIL
09/14/99 YAVAPAI
1115 AM PRESCOTT VALLEY AZ .75 INCH HAIL
09/14/99 YAVAPAI
1115 AM DIAMOND VALLEY AZ 1 INCH HAIL
09/14/99 YAVAPAI
1220 PM PRESCOTT VALLEY AZ .75 INCH HAIL
09/14/99 YAVAPAI
0145 PM PRESCOTT VALLEY AZ 1 INCH HAIL
09/14/99 YAVAPAI
0120 PM 6 NW CHINO VALLEY AZ FUNNEL CLOUD
09/14/99 YAVAPAI SPOTTER REPORTED FUNNEL
CLOUD NORTHWEST OF CHINO
VALLEY NEAR PAULDEN
0152 PM 8 E CHINO VALLEY AZ TORNADO
09/14/99 YAVAPAI TORNADO REPORTED EAST OF
CHINO VALLEY
PEREZLocal storm report, Sep 14, 2:13 PM MST, 1 hour 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
213 PM MST TUE SEP 14 1999
TIME(MST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1038 AM PRESCOTT AZ 1 INCH HAIL
09/14/99 YAVAPAI QUARTER SIZED HAIL
1100 AM PRESCOTT VALLEY AZ .75 INCH HAIL
09/14/99 YAVAPAI
1115 AM PRESCOTT VALLEY AZ .75 INCH HAIL
09/14/99 YAVAPAI
1115 AM DIAMOND VALLEY AZ 1 INCH HAIL
09/14/99 YAVAPAI
1220 PM PRESCOTT VALLEY AZ .75 INCH HAIL
09/14/99 YAVAPAI
0145 PM PRESCOTT VALLEY AZ 1 INCH HAIL
09/14/99 YAVAPAI
0120 PM 6 NW CHINO VALLEY AZ FUNNEL CLOUD
09/14/99 YAVAPAI SPOTTER REPORTED FUNNEL
CLOUD NORTHWEST OF CHINO
VALLEY NEAR PAULDEN
0152 PM 8 E CHINO VALLEY AZ TORNADO
09/14/99 YAVAPAI TORNADO REPORTED EAST OF
CHINO VALLEY
PEREZThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 5:44 AM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 46 min |
| Sep 14, 6:24 AM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 36 min |
| Sep 14, 9:05 AM MST | Severe Thunderstorm Warning | FGZ | Coconino | 45 min |
| Sep 14, 10:37 AM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 33 min |
| Sep 14, 11:13 AM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 32 min |
| Sep 14, 12:19 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 46 min |
| Sep 14, 12:41 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 34 min |
| Sep 14, 1:00 PM MST | Severe Thunderstorm Warning | FGZ | Gila | 50 min |
| Sep 14, 1:10 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 35 min |
| Sep 14, 1:20 PM MST | Tornado Warning | FGZ | Yavapai | 35 min |
| Sep 14, 1:32 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Gila | 48 min |
| Sep 14, 1:45 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 50 min |
| Sep 14, 1:48 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 62 min |
| Sep 14, 1:51 PM MST | Tornado Warning | FGZ | Yavapai | 34 min |
| Sep 14, 3:35 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 45 min |
| Sep 14, 3:58 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 47 min |
| Sep 14, 4:39 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 36 min |
Nearby
Tornado Warnings in Arizona, 1999Every tornado warning in 1999Tornadoes in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.