Flash Flood Warning 14, NWS Boise, ID

Issued

Aug 30, 2002, 7:20 PM MDT (01:20 UTC)

Expired

Aug 30, 2002, 8:30 PM MDT

In force

70 min

Issued by

NWS Boise, ID

Area

Counties, with a storm outline in the text

County Malheur County, OR

The Boise radar (KCBX), 125 km from the middle of the area, began a volume at 01:24 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.

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.

000 
WGUS55 KBOI 310120
FFWBOI
ORC045-310230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BOISE ID
720 PM MDT FRI AUG 30 2002

THE NATIONAL WEATHER SERVICE IN BOISE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL MALHEUR COUNTY IN SOUTHEAST OREGON

* UNTIL 830 PM MDT

* AT 713 PM MDT...THE PUBLIC REPORTED VERY HEAVY RAIN 17 MILES
  SOUTHWEST OF HARPER...OR ABOUT 49 MILES WEST OF PARMA.  THE AREA OF
  HEAVY RAIN WAS NEARLY STATIONARY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. 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 IN
BOISE.

LAT...LON 4408 11747 4353 11757 4351 11815 4389 11798

NWS Boise, ID wrote its last area forecast discussion before this flash flood warning went out at Aug 30, 1:45 PM MDT, 5 hours 35 minutes earlier.

SOUTHWEST IDAHO/SOUTHEAST OREGON AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE IDAHO
145 PM MDT FRIDAY AUGUST 30 2002

A SHORTWAVE TROUGH WAS MOVING NORTHEAST ACROSS OUR AREA THIS
AFTERNOON AND WILL EXIT TO THE EAST BY SATURDAY AFTERNOON. A FLAT
UPPER RIDGE WITH STABLE AND DRY AIR WILL TAKE OVER SATURDAY NIGHT
THROUGH MONDAY.  WILL HAVE 20 TO 50 PERCENT POPS TONIGHT WITH THE
SHORTWAVE AND 10 TO 20 PCT POPS ON SATURDAY AS THE WAVE EXITS.
TEMPERATURES WILL BE 4-8 DEGREES ABOVE NORMAL SAT-MON.  THREAT FOR
ANY SEVERE WEATHER THIS AFTERNOON OR TONIGHT IS LOW.

IN THE EXTENDED PERIOD (TUE-FRI)...A MAJOR TROUGH WILL TAKE OVER
TUE/WED AND WILL BRING MUCH COOLER TEMPERATURES AND A CHANCE OF
SHOWERS INTO THURSDAY.  THE TROUGH WILL EXIT AND AN UPPER RIDGE WITH
WARM AND DRY CONDITIONS WILL TAKE OVER NEXT FRI.  THINK THE MRF
MODEL WAS A LITTLE TOO FAST ON TAKING THE TROUGH OUT NEXT THU, OTHER
MODELS AGREE.  TEMPERATURES WILL START OUT NEAR NORMAL ON TUE, FALL
ABOUT 10 DEGREES BELOW NORMAL ON WED/THU, THEN RISE TO NEAR NORMAL
AGAIN NEXT FRI.

.BOI...NONE.

EGGER

Flash Flood Warnings in Oregon, 2002Every flash flood warning in 2002

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.