Alert archive / Idaho / Flash Flood Warnings in 1996
Flash Flood Warning 13, NWS Pocatello, ID
NWS Pocatello, ID issued this flash flood warning at Jul 29, 1996, 4:30 PM MDT for Cassia County, Oneida County, Idaho. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 29, 1996, 4:30 PM MDT (22:30 UTC)
- Expired
- Jul 29, 1996, 5:30 PM MDT
- In force
- 60 min
- Issued by
- NWS Pocatello, ID
- Area
- Whole counties
Counties Cassia County, ID, Oneida County, ID
The radar
The Pocatello radar (KSFX), 101 km from the middle of the area, began a volume at 22:31 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
Elko, NV (KLKN), launched 12:00Z, 10.5 hours before the alert went out and 179 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
- 2 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 1177 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIH 292230 FFWPIH IDC031-071-292330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM AND FLASH FLOOD WARNING NATIONAL WEATHER SERVICE POCATELLO ID 430 PM MDT MON JUL 29 1996 THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 530 PM MDT FOR THE FOLLOWING LOCATION... IN SOUTHEAST IDAHO ...SOUTHEASTERN CASSIA COUNTY...NORTHWESTERN ONEIDA COUNTY AT 425 PM DOPPLER WEATHER RADAR SHOWED A SEVERE THUNDERSTORM WITH EXTREMELY HEAVY RAIN ALONG AND IMMEDIATELY NORTH OF HIGHWAY 81 IN SOUTHEAST CASSIA COUNTY. THIS STORM IS MOVING NORTHEAST AT 10 MPH AND WILL CROSS INTERSTATE 84 ALONG THE ONEIDA COUNTY LINE IN THE SAME AREA WHERE FLOODING HAS ALREADY BEEN REPORTED. FLASH FLOODING AND DIME-SIZE HAIL ARE LIKELY ALONG INTERSTATE 84 NEAR THE ONEIDA/CASSIA COUNTY LINE AND HIGHWAY 81 SOUTH OF BRIDGE. THIS IS A DANGEROUS STORM WITH CONSIDERABLE FLOODING LIKELY. DO NOT ATTEMPT TO CROSS FLOODED ROADS. IF HEAVY RAIN IS OBSERVED AND YOU ARE LOCATED IN A LOW LYING AREA OR NORMALLY DRY DRAINAGE...MOVE TO HIGHER GROUND IMMEDIATELY. END/BAUCK
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 Jul 29, 2:14 PM MDT, 2 hours 16 minutes earlier.
Area forecast discussion, Jul 29, 2:14 PM MDT, 2 hours 16 minutes before
AN IMPRESSIVE OUTBREAK OF CONVECTION IN SOUTHEAST IDAHO WITH EXTREMELY HEAVY PRECIP TOTALS. OVER 1 INCH IN 15 TO 30 MINUTES BECOMING COMMON MANY AREAS. FLASH FLOOD WATCH WELL SUPPORTED BY ACTIVITY. COORDINATION WITH BOISE...THEY WILL EXTEND FLASH FLOOD WATCH THROUGH 10 PM. ALTHOUGH ACTIVITY HAS BEEN SLOW TO DEVELOP UPPER SNAKE HIGHLANDS...SHEAR AXIS AND LOCATION OF SHORTWAVE FAVORS SLOW MOVING CELLS WITH LARGE SCALE DEVELOPMENT THROUGH THIS EVENING. LATEST WSR-88D SHOWS ACTIVITY BEGINNING TO BLOSSOM IMMEDIATELY SOUTH OF THIS AREA. VILS 30+ HAVE BEEN SUPPORTING NEAR DIME-SIZE HAIL. LOTS MORE STATEMENTS AND POSSIBLE WARNINGS TO COME!!! DRYER AIR OVER CENTRAL NEVADA AND SOUTHWEST IDAHO WILL WORK INTO AREA LATER TONIGHT AND TUESDAY. ALTHOUGH RIDGE BUILDS SLIGHTLY NEXT 48 HOURS...MODELS INDICATE INSTABILITY PERSISTS. WILL KEEP ISOLATED TO WIDELY SCATTERED CONVECTION IN ZONES THROUGH PERIOD. TEMPERATURES WILL WARM AGAIN DUE TO INCREASING SUN AND RIDGE REESTABLISHING. BAUCK PIH BB 055/087 054/092 054 03522 IDA BB 054/085 052/089 053 03622
In the hours before
Special weather statement, Jul 29, 11:29 AM MDT, 5 hours 1 minute before
IDZ003-291815- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE POCATELLO ID 1128 AM MDT MON JUL 29 1996 ...STRONG THUNDERSTORMS IN POWER COUNTY... AT 1015 AM...DOPPLER WEATHER RADAR DETECTED A STRONG THUNDERSTORM BETWEEN ROCKLAND AND NEELEY. THIS THUNDERSTORM IS NEARLY STATIONARY AND HAS THE POTENTIAL TO PRODUCE FLASH FLOODING. ANOTHER STRONG THUNDERSTOROVER NEELEY IS MOVING TOWARD AMERICAN FALLS AND THE POCATELLO AIRPORT. IN A FLASHT FLOOD SITUATION...DO NOT ATTEMPT TO CROSS FLOODED ROADWAYS AND SEEK HIGHER GROUND. STAY TUNED FOR FURTHER UPDATES. END/MOLINA
Special weather statement, Jul 29, 12:48 PM MDT, 3 hours 42 minutes before
IDZ003-004-292000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE POCATELLO ID 1240 PM MDT MON JUL 29 1996 ...STRONG THUNDERSTORMS ARBON VALLEY...MCCAMMON AND SOUTHERN POCATELLO AREAS... AT 1240 PM DOPPLER WEATHER RADAR SHOWED SEVERAL STRONG THUNDERSTORMS IN EASTERN POWER AND NORTHERN BANNOCK COUNTIES. THE STRONGEST STORMS EXTEND FROM INKOM SOUTHWESTWARD ACROSS SCOUT MOUNTAIN TO THE COMMUNITY OF CRYSTAL. THESE STORMS ARE MOVING NORTHEAST AT 15 MPH AND WILL PRODUCE HEAVY RAIN AND PEA-SIZE HAIL. SOME MINOR FLOODING AND RUNOFF IS LIKELY WITH THESE STORMS. TRAVELLERS USING INTERSTATE 15 FROM INKOM TO MCCAMMON SHOULD BE PREPARED FOR CONSIDERABLE PONDING AND LOCAL LY LOW VISIBILITIES. BAUCK
Special weather statement, Jul 29, 1:24 PM MDT, 3 hours 6 minutes before
IDZ004-292015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE POCATELLO ID 118 PM MDT MON JUL 29 1996 VERY HEAVY RAIN HAS FALLEN ALONG RAPID CREEK NORTH OF INKOM. DOPPLER RADAR AND LOCAL SPOTTERS REPORT NEARLY ONE INCH OF RAIN IN FIFTEEN MINUTES BETWEEN 1:00 AND 1:15 PM. THE STORMS PRODUCING THIS HEAVY RAIN ARE MOVING VERY SLOWLY EASTWARD AND HAVE THE POTENTIAL TO PRODUCE LOCAL FLOODING ALONG RAPID CREEK AND EASTWARD INTO THE UPPER PORTNEUF DRAINAGE IN THE NEXT HOUR. AS THE STORMS PROGRESS EASTWARD.. LOCALIZED FLOODING MAY OCCUR ALONG PEBBLE CREEK.. AND OTHER HEADWATER DRAINAGES OF THE UPPER PORTNUF RIVER INTO EASTERN CARIBOU COUNTY. PEOPLE TRAVELLING ALONG RAPID CREEK ROAD AND OTHER SECONDARY ROADS IN NORTHEASTERN BANNOCK AND NORTHWESTERN CARIBOU COUNTIES SHOULD EXERCISE CAUTION AND BE PREPARED FOR REDUCED VISIBILITY IN BRIEF HEAVY RAINSHOWERS.. WATER ACROSS ROADWAYS... AND PONDING OF WATER IN LOW LYING AREAS. END.l..GOENS
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 11:42 AM MDT | Flash Flood Warning | PIH | Power | 63 min |
| Jul 29, 1:33 PM MDT | Flash Flood Warning | PIH | Oneida, Power | 57 min |
| Jul 29, 1:33 PM MDT | Severe Thunderstorm Warning | PIH | Oneida, Power | 57 min |
| Jul 29, 1:51 PM MDT | Flash Flood Warning | PIH | Bannock, Caribou | 54 min |
| Jul 29, 1:51 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Caribou | 54 min |
| Jul 29, 2:09 PM MDT | Flash Flood Warning | PIH | Oneida, Power | 66 min |
| Jul 29, 2:09 PM MDT | Severe Thunderstorm Warning | PIH | Oneida, Power | 66 min |
| Jul 29, 2:47 PM MDT | Flash Flood Warning | PIH | Caribou | 58 min |
| Jul 29, 2:47 PM MDT | Severe Thunderstorm Warning | PIH | Caribou | 58 min |
| Jul 29, 3:08 PM MDT | Flash Flood Warning | PIH | Oneida | 52 min |
| Jul 29, 3:08 PM MDT | Severe Thunderstorm Warning | PIH | Oneida | 52 min |
| Jul 29, 3:49 PM MDT | Flash Flood Warning | PIH | Cassia | 41 min |
| Jul 29, 3:49 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 41 min |
| Jul 29, 4:30 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Oneida | 60 min |
| Jul 29, 4:37 PM MDT | Severe Thunderstorm Warning | PIH | Bonneville, Jefferson | 68 min |
| Jul 29, 5:33 PM MDT | Severe Thunderstorm Warning | PIH | Bingham | 57 min |
| Jul 29, 5:50 PM MDT | Severe Thunderstorm Warning | PIH | Bannock | 40 min |
Nearby
Flash Flood Warnings in Idaho, 1996Every flash flood warning in 1996
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.