Alert archive / Idaho / Flash Flood Warnings in 2009
Flash Flood Warning 13, NWS Pocatello, ID
NWS Pocatello, ID issued this flash flood warning at Jun 14, 2009, 2:24 PM MDT for Blaine County, Idaho. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2009, 2:24 PM MDT (20:24 UTC)
- Expired
- Jun 14, 2009, 8:15 PM MDT
- In force
- 6 hr
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
- Flood severity
- None
County Blaine County, ID
The radar
The Boise radar (KCBX), 143 km from the middle of the area, began a volume at 20:25 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
Boise Airport, ID (KBOI), launched 12:00Z, 8.4 hours before the alert went out and 139 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
- 194 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 702 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KPIH 142024 FFWPIH IDC013-150215- /O.NEW.KPIH.FF.W.0013.090614T2024Z-090615T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE POCATELLO 224 PM MDT SUN JUN 14 2009 THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN BLAINE COUNTY IN CENTRAL IDAHO... THIS INCLUDES THE CITY OF KETCHUM AND THE CASTLE ROCK BURN AREA... * UNTIL 815 PM MDT * AT 222 PM MDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED MULTIPLE SLIDES WITHIN THE CASTLE ROCK BURN AREA. DOPPLER RADAR ALSO INDICATED SHOWERS AND THUNDERSTORMS MOVING ACROSS AND INTO THE WARNED AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLOODING OR MUD/DEBRIS SLIDES ARE 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. && LAT...LON 4378 11459 4379 11433 4356 11432 4356 11459 $$ JKEYES
2 follow-up statements
000 WGUS75 KPIH 150030 FFSPIH FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE POCATELLO 630 PM MDT SUN JUN 14 2009 IDC013-150215- /O.CON.KPIH.FF.W.0013.000000T0000Z-090615T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BLAINE ID- 630 PM MDT SUN JUN 14 2009 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR NORTHWESTERN BLAINE COUNTY... AT 627 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED LIGHT SHOWERS IN THE VICINITY OF KETCHUM AND THE CASTLE ROCK BURN AREA. AREA OBSERVATIONS INDICATE UP TO ONE-HALF INCH OF RAIN HAS FALLEN IN SOME AREAS. THIS IS ENOUGH TO PRODUCE FLASH FLOODING...THEREFORE THE FLASH FLOOD WARNING WILL CONTINUE. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SUN VALLEY AND KETCHUM PRECAUTIONARY/PREPAREDNESS ACTIONS... FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS. && LAT...LON 4378 11459 4379 11433 4356 11432 4356 11459 $$ DMH
000 WGUS75 KPIH 150210 FFSPIH FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE POCATELLO 810 PM MDT SUN JUN 14 2009 IDC013-150217- /O.EXP.KPIH.FF.W.0013.000000T0000Z-090615T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BLAINE ID- 810 PM MDT SUN JUN 14 2009 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 815 PM MDT FOR NORTHWESTERN BLAINE COUNTY... HEAVY PRECIPITATION HAS ENDED ACROSS THE WARNED AREA AND THE THREAT OF FLASH FLOODING HAS ENDED. THEREFORE THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 4378 11459 4379 11433 4356 11432 4356 11459 $$ DMH
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 Pocatello, ID wrote its last area forecast discussion before this flash flood warning went out at Jun 14, 1:39 PM MDT, 45 minutes earlier.
Area forecast discussion, Jun 14, 1:39 PM MDT, 45 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 139 PM MDT SUN JUN 14 2009 .SHORT TERM...TONIGHT THROUGH WEDNESDAY MORNING. LOW PRESSURE SYSTEM OVER WESTERN IDAHO CONTINUES TO GENERATE SHOWERS AND THUNDERSTORMS OVER THE ENTIRE STATE. THESE THUNDERSTORMS HAVE BEEN CAPABLE OF PRODUCING SMALL HAIL...GUSTY WINDS ALONG WITH HEAVY DOWNPOURS. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE HIGH COUNTRY WHERE BURN AREAS AND SMALL STREAMS REMAIN SUSCEPTIBLE TO FLOODING. THE ENVIRONMENT ALSO SUPPORTS WEAK ROTATION SO REPORTS OF WALL CLOUDS AND EVEN FUNNEL CLOUDS HAVE NOT BEEN UNCOMMON. HOWEVER...ODDS OF FORMING ACTUAL TORNADO LOOK PRETTY SLIM BECAUSE INSTABILITY IS NOT OVERLY IMPRESSIVE. THE LOW PRESSURE SYSTEM IS EXPECTED TO MOVE OVER EASTERN IDAHO TOMORROW. MODELS SHOW SLIGHTLY DRIER AIR MOVING INTO THE REGION TOMORROW. ENOUGH THAT THUNDERSTORMS MAY REMAIN SCATTERED OVER THE SNAKE PLAIN BUT STILL NUMEROUS OVER THE HIGH COUNTRY. CHANCES DIMINISH A LITTLE MORE ON TUESDAY AS THE UPPER LOW MOVES AWAY FROM THE REGION. ALTHOUGH THERE WILL BE ENOUGH MOISTURE AROUND TO TRIGGER SCATTERED THUNDERSTORMS MAINLY IN THE HIGH COUNTRY ON TUESDAY. .LONG TERM...WEDNESDAY AFTERNOON THROUGH SUNDAY NIGHT. A SPLIT FLOW SYSTEM CROSSES THE AREA ON WEDNESDAY...WITH THE NORTHERN STREAM AFFECTING EASTERN IDAHO. THIS SYSTEM WILL FINALLY CLEAR THE FORECAST AREA LATER ON THURSDAY. THE MODELS ARE TRENDING TOWARD A CLEAN BREAK FOR THE MORE WIDESPREAD SHOWERS/STORMS ON FRIDAY AS A RIDGE BUILDS ACROSS THE NORTHERN ROCKIES. AFTER THIS...THE PICTURE BECOMES A LITTLE LESS CLEAR...ALTHOUGH FOR TODAY THE MODELS ARE TRENDING TOWARD AN OVERALL TROF ALONG/OFF THE WEST COAST AND SOUTHWEST FLOW ACROSS OUR AREA. THIS WOULD OPEN THE DOOR AGAIN FOR MOISTURE TO STREAM ACROSS EASTERN IDAHO AND THE INCREASED CHANCE OF SHOWERS/STORMS. THIS TREND HAS BEEN LESS CLEAR THE PAST DAY OR SO. THE GRIDDED FORECASTS ALREADY HAS SOME INCREASE TOWARD THE END OF THE PERIOD DUE TO UNCERTAINTY AND USING CLIMO TO JUST ABOVE CLIMO POPS. KEYES && .AVIATION...SHOWERS AND THUNDERSTORMS WILL CONTINUE FOR THE NEXT 24 HOURS. HEAVIER SHOWERS AND STORMS COULD DROP VIS AND CIGS BELOW VFR...POSSIBLY INTO IFR AT TIMES. KEYES && .FIRE WEATHER...A LOW PRESSURE SYSTEM POSITIONED OVER THE NORTHERN SIERRA THIS MORNING WILL CONTINUE TO MIGRATE NE INTO SRN IDAHO THIS AFTERNOON PROMOTING NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS. SOME STORMS MAY PRODUCE HEAVY RAIN. WET AND UNSTABLE CONDITIONS CONTINUE THROUGH WEDNESDAY AS ADDITIONAL PACIFIC DISTURBANCES ADVANCE INTO THE WRN STATES. HUSTON && .PIH WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR IDZ018-019-022>025- 031-032. &&
Hazardous weather outlook, Jun 14, 4:21 AM MDT, 10 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 421 AM MDT SUN JUN 14 2009 IDZ017>025-031-032-151030- EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS- UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN- SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS- CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION- BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI- 421 AM MDT SUN JUN 14 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS ARE EXPECTED TO SPREAD REDEVELOP AGAIN TODAY...BECOMING NUMEROUS ACROSS EASTERN IDAHO BY THIS AFTERNON. LOCALLY HEAVY RAINFALL WILL AGAIN BE A THREAT WITH THE STRONGER THUNDERSTORMS. SMALL HAIL AND GUSTY WINDS ARE ALSO POSSIBLE. A FLASH FLOOD WATCH IS IN EFFECT UNTIL LATE TONIGHT FOR THE MOUNTAINOUS PORTIONS OF EASTERN IDAHO. SMALL STREAMS AND URBAN AREAS WILL BE PARTICULARLY VULNERABLE TO FLASH FLOODING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY PERIODIC SHOWERS AND THUNDERSTORMS ARE EXPECTED THROUGH NEXT WEEKEND...HOWEVER PRECIPITATION CHANCES WILL GRADUALLY DIMINISH AS THE WEEK PROGRESSES. .SPOTTER INFORMATION STATEMENT... WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL... EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR 208-233-0834.
In the hours before
Special weather statement, Jun 14, 11:36 AM MDT, 2 hours 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE POCATELLO 1136 AM MDT SUN JUN 14 2009 IDZ021>023-141800- BINGHAM ID-POWER ID-BANNOCK ID- 1136 AM MDT SUN JUN 14 2009 THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... NORTHWESTERN BANNOCK COUNTY IN SOUTHEAST IDAHO EAST CENTRAL POWER COUNTY IN SOUTHEAST IDAHO SOUTH CENTRAL BINGHAM COUNTY IN SOUTHEAST IDAHO UNTIL NOON MDT AT 1132 AM MDT...STORM SPOTTERS AND DOPPLER RADAR INDICATED RAPIDLY DEVELOPING THUNDERSTORMS EXTENDING FROM 5 MILES SOUTHWEST OF POCATELLO TO NEAR FORT HALL...MOVING NORTHEAST AT 25 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER IS EXPECTED WITH THIS STORM...ALONG WITH VERY HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS IMPACTED INCLUDE... POCATELLO... CHUBBUCK... FORT HALL... HEAVY RAIN MAY LEAD TO PONDING OF WATER ON ROADWAYS AND MINOR FLOODING. IF YOU SEE FLOODING...PLEASE RELAY YOUR REPORT TO LOCAL LAW ENFORCEMENT OR THE NATIONAL WEATHER SERVICE. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS. LAT...LON 4310 11239 4296 11215 4269 11249 4280 11268 TIME...MOT...LOC 1734Z 218DEG 20KT 4282 11251 JKEYES
Special weather statement, Jun 14, 12:09 PM MDT, 2 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
1209 PM MDT SUN JUN 14 2009
IDZ019-020-141845-
CLARK ID-JEFFERSON ID-FREMONT ID-BUTTE ID-BONNEVILLE ID-MADISON ID-
1209 PM MDT SUN JUN 14 2009
THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
EXTREME EAST CENTRAL BUTTE COUNTY IN EAST CENTRAL IDAHO
SOUTHWESTERN FREMONT COUNTY IN EASTERN IDAHO
SOUTHWESTERN CLARK COUNTY IN EASTERN IDAHO
NORTHWESTERN MADISON COUNTY IN SOUTHEAST IDAHO
NORTHWESTERN BONNEVILLE COUNTY IN SOUTHEAST IDAHO
JEFFERSON COUNTY IN SOUTHEAST IDAHO
UNTIL 1245 PM MDT
AT 1205 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 17 MILES NORTHWEST
OF NORTHWEST INL TO 5 MILES SOUTH OF ROBERTS..AND MOVING NORTHEAST AT
20 MPH.
SMALL HAIL...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING
ARE LIKELY WITH THESE STORMS. RAINFALL RATES NEAR ONE HALF INCH OR
MORE IN A SHORT AMOUNT OF TIME ARE POSSIBLE. PONDING OF WATER AND
MINOR FLOODING WILL BE COMMON IN THIS AREA.
LOCATIONS IMPACTED INCLUDE...
ROBERTS...
LEWISVILLE...
RIGBY...
MENAN...
LORENZO...
HAMER...
MONTEVIEW...
DUBOIS...
PLANO...
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4401 11158 4350 11209 4393 11273 4397 11269
4397 11278 4410 11298 4423 11293 4423 11281
4439 11281 4441 11284 4442 11284 4448 11276
TIME...MOT...LOC 1806Z 204DEG 18KT 4409 11286 4365 11213
JKEYESSpecial weather statement, Jun 14, 1:21 PM MDT, 1 hour 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE POCATELLO 121 PM MDT SUN JUN 14 2009 IDZ019-020-142000- JEFFERSON ID-FREMONT ID-MADISON ID- 121 PM MDT SUN JUN 14 2009 THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... SOUTHWESTERN FREMONT COUNTY IN EASTERN IDAHO WESTERN MADISON COUNTY IN SOUTHEAST IDAHO SOUTHEASTERN JEFFERSON COUNTY IN SOUTHEAST IDAHO UNTIL 200 PM MDT AT 117 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERAL STRONG THUNDERSTORM NEAR RIGBY..MOVING NORTHEAST AT 15 MPH. PEA SIZED HAIL IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. FUNNEL CLOUDS HAVE BEEN REPORTED AS WELL. ALTHOUGH...TORNADOES ARE NOT EXPECTED. LOCATIONS IMPACTED INCLUDE... RIGBY... LORENZO... ARCHER... REXBURG... PLANO... SUGAR CITY AND EGIN... LAT...LON 4400 11194 4392 11161 4362 11186 4366 11221 TIME...MOT...LOC 1918Z 215DEG 13KT 4373 11194
Local storm report, Jun 14, 1:49 PM MDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
149 PM MDT SUN JUN 14 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1131 AM HAIL 3 ENE POCATELLO 42.89N 112.41W
06/14/2009 M0.50 INCH BANNOCK ID TRAINED SPOTTER
CAME DURING STRONG THUNDERSTORM IN THE AREA
1150 AM HEAVY RAIN 2 ENE POCATELLO 42.88N 112.42W
06/14/2009 M0.57 INCH BANNOCK ID TRAINED SPOTTER
30 MINUTE RAINFALL TOTAL - ACCOMPANIED BY PEA SIZE HAIL
1150 AM HEAVY RAIN 3 ENE POCATELLO 42.89N 112.41W
06/14/2009 M1.14 INCH BANNOCK ID TRAINED SPOTTER
ONE HOUR RAINFALL TOTAL
1150 AM HEAVY RAIN 4 SSW LORENZO 43.68N 111.91W
06/14/2009 M0.59 INCH JEFFERSON ID TRAINED SPOTTER
28 MINUTE RAINFALL TOTAL
1150 AM FLOOD RIGBY 43.67N 111.92W
06/14/2009 JEFFERSON ID TRAINED SPOTTER
STREET FLOODING IN THE TOWN OF RIBGY
&&
JKEYESThe office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 11:36 AM MDT | Special Weather Statement | PIH | Bannock | 24 min |
| Jun 14, 12:09 PM MDT | Special Weather Statement | PIH | Clark, Jefferson | 36 min |
| Jun 14, 1:21 PM MDT | Special Weather Statement | PIH | Madison | 39 min |
| Jun 14, 1:39 PM MDT | Areal Flood Advisory | PIH | Bonneville, Fremont, Jefferson, Madison | 4 hr |
| Jun 14, 1:57 PM MDT | Severe Thunderstorm Warning | PIH | Bonneville, Jefferson | 33 min |
| Jun 14, 4:21 PM MDT | Flash Flood Warning | PIH | Cassia, Oneida | 3 hr |
| Jun 14, 5:18 PM MDT | Special Weather Statement | PIH | Power | 42 min |
Nearby
Flash Flood Warnings in Idaho, 2009Every flash flood warning in 2009
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.