Alert archive / Arizona / Flash Flood Warnings in 2002
Flash Flood Warning 25, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this flash flood warning at Sep 10, 2002, 9:49 PM MST for Apache County, Arizona. It was in force for 116 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 10, 2002, 9:49 PM MST (04:49 UTC)
- Expired
- Sep 10, 2002, 11:45 PM MST
- In force
- 116 min
- Issued by
- NWS Flagstaff, AZ
- Area
- Counties, with a storm outline in the text
County Apache County, AZ
The radar
The Flagstaff radar (KFSX), 249 km from the middle of the area, began a volume at 04:48 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 4.8 hours before the alert went out and 242 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
- 213 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 936 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- 514 m²/s²
- 0-3 km storm-relative helicity
- 537 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 10.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KFGZ 110449 FFWFGZ AZC001-110645- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FLAGSTAFF AZ 940 PM MST TUE SEP 10 2002 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTH CENTRAL APACHE COUNTY IN NORTHEAST ARIZONA * UNTIL 1145 PM MST (1245 PM MDT) * AT 940 PM MST (1040 PM MDT)...THE NAVAJO POLICE DEPARTMENT IN CHINLE INDICATED FLOODING ALONG CHINLE WASH FROM CHINLE NORTHWARD TO ROCK POINT. EVACUATIONS WERE CONTINUING ALONG THE WASH. THE RIVER GAGE ON CHINLE CREEK SHOWED A FLOW OF 450 CUBIC FEET PER SECOND AT 6 PM MST...UP FROM A READING OF ZERO CFS EARLIER IN THE AFTERNOON. LIGHT RAINFALL WILL CONTINUE OVER NORTHERN APACHE COUNTY THROUGH 100 AM MDT WEDNESDAY MORNING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. LAT...LON 3603 10953 3608 10935 3673 10934 3676 10969
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Sep 10, 9:28 PM MST, 21 minutes earlier.
Area forecast discussion, Sep 10, 9:28 PM MST, 21 minutes before
NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
925 MST TUE SEP 10 2002
.SYNOPSIS...TROPICAL MOISTURE WILL CONTINUE TO STREAM ACROSS ARIZONA
THROUGH WEDNESDAY. EXPECT NUMEROUS SHOWERS AND THUNDERSTORMS TO
CONTINUE TONIGHT AND TOMORROW...BEFORE DIMINISHING IN COVERAGE LATER
IN THE WEEK. EXPECT A DRYING TREND WITH MOSTLY CLEAR SKIES BY THE
WEEKEND. TEMPERATURES WILL REMAIN BELOW NORMAL FOR THE NEXT FEW
DAYS...THEN RISE TO NORMAL BY THE WEEKEND.
.DISCUSSION...WILL HAVE TO MAKE THIS QUICK...AS EXTENSIVE CONVECTIVE
ACTIVITY CONTINUES TO BLANKET THE CWA. HAVE CONTINUED TO ISSUE
AND/OR EXTEND FLASH FLOOD WARNINGS AND URBAN AND SMALL STREAM FLOOD
ADVISORIES THROUGHOUT THE EVENING. AT LEAST IT LOOKS LIKE MOST OF
THIS AFTERNOONS SEVERE THUNDERSTORM ACTIVITY HAS QUIETED
DOWN...EXCEPT OVER SOUTH CENTRAL YAVAPAI COUNTY. MAIN THREAT FOR THE
EVENING WILL BE FLOODING. WITH SATURATED SOILS...CONTINUED MODERATE
TO HEAVY RAINFALL...REPORTS OF FLOODING AND RISING STREAM LEVELS
THROUGHOUT THE AREA...WILL EXTEND THE FFA TIL MORNING. THINK
WEDNESDAY WILL BE ANOTHER ACTIVE DAY AS SOCAL LOW LIFTS NORTH AND
DYNAMICS REMAIN FAVORABLE.
KREITNER
.FGZ...FFA ALL ZONES UNTIL MIDNIGHT MST. WILL EXTEND FFA UNTIL 600
AM MST WEDNESDAY MORNING.
.CODED TEMPERATURES/POPS FOR SELECTED CITIES IN NORTHERN ARIZONA
CITY TEMPERATURES LO/HI PROBABILITY OF PRECIP
TON WED THU FRI TON WED THU FRI
FLAGSTAFF 050/070 046/073 044/074 080 060 040 040 030 020
WINSLOW 058/077 056/080 054/081 070 050 040 030 020 000
PRESCOTT 057/077 054/081 053/082 080 060 040 030 020 000
PAGE 065/080 064/082 063/083 060 050 040 030 020 000
WINDOW ROCK 053/070 050/072 047/073 080 070 060 050 040 030
CANYON DE CHELLY 060/076 057/078 054/079 080 070 060 050 040 020
COTTONWOOD 065/088 062/092 061/093 080 060 040 030 020 000
GRAND CANYON 051/071 047/074 045/075 080 060 040 040 020 000
GREER 049/067 045/070 043/071 080 060 040 040 030 030
HEBER 053/075 049/078 047/079 080 060 040 040 030 020
JACOB LAKE 050/067 046/070 044/071 060 050 040 030 020 000
NAVAJO N.M. 059/068 056/070 053/071 070 050 040 030 020 020
PAYSON 057/081 054/085 053/086 070 050 040 030 020 000
SEDONA 064/085 061/089 060/090 080 060 040 030 020 000
SELIGMAN 050/080 047/084 046/085 080 060 040 040 020 000
SHOW LOW 059/076 055/079 053/080 080 060 040 040 030 030
ST. JOHNS 054/073 052/076 050/077 080 060 040 040 030 020
WUPATKI N.M. 060/079 058/082 056/083 070 050 040 030 020 000The office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 5:01 PM MST | Tornado Warning | FGZ | Apache | 29 min |
| Sep 10, 5:01 PM MST | Tornado Warning | FGZ | Apache | 29 min |
| Sep 10, 5:08 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Gila | 37 min |
| Sep 10, 5:26 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Yavapai | 34 min |
| Sep 10, 5:43 PM MST | Flash Flood Warning | FGZ | Coconino, Yavapai | 2 hr |
| Sep 10, 5:44 PM MST | Flash Flood Warning | FGZ | Coconino, Yavapai | 3 hr |
| Sep 10, 5:45 PM MST | Flash Flood Warning | FGZ | Apache, Navajo | 3 hr |
| Sep 10, 5:45 PM MST | Flash Flood Warning | FGZ | Apache, Navajo | 2 hr |
| Sep 10, 5:55 PM MST | Flash Flood Warning | FGZ | Coconino | 2 hr |
| Sep 10, 5:58 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Sep 10, 7:45 PM MST | Flash Flood Warning | FGZ | Apache | 105 min |
| Sep 10, 7:45 PM MST | Flash Flood Warning | FGZ | Apache | 45 min |
| Sep 10, 8:35 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 25 min |
| Sep 10, 8:54 PM MST | Severe Thunderstorm Warning | FGZ | Yavapai | 36 min |
| Sep 10, 9:40 PM MST | Flash Flood Warning | FGZ | Apache | 65 min |
| Sep 11, 1:25 AM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Sep 11, 1:25 AM MST | Flash Flood Warning | FGZ | Coconino | 2 hr |
| Sep 11, 12:25 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Sep 11, 12:25 PM MST | Flash Flood Warning | FGZ | Coconino | 110 min |
| Sep 11, 12:28 PM MST | Severe Thunderstorm Warning | FGZ | Coconino, Navajo | 32 min |
| Sep 11, 2:00 PM MST | Severe Thunderstorm Warning | FGZ | Navajo | 45 min |
| Sep 11, 3:05 PM MST | Flash Flood Warning | FGZ | Coconino | 3 hr |
| Sep 11, 3:05 PM MST | Flash Flood Warning | FGZ | Coconino | 2 hr |
Nearby
Flash Flood Warnings in Arizona, 2002Every flash flood warning in 2002
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.