Alert archive / Idaho / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 1, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at May 16, 1997, 2:58 AM PDT for Idaho County, Idaho. It was in force for 62 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
- May 16, 1997, 2:58 AM PDT (09:58 UTC)
- Expired
- May 16, 1997, 4:00 AM PDT
- In force
- 62 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
County Idaho County, ID
The radar
The Missoula radar (KMSX), 175 km from the middle of the area, began a volume at 09:59 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
Spokane, WA (KOTX), launched 00:00Z, 10.0 hours before the alert went out and 218 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
- 287 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 2136 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSO 161001 RRA SVRMSO IDC049-161100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 358 AM MDT (258 AM PDT) FRI MAY 16 1997 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 AM MDT (400 AM PDT) FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL IDAHO ...IDAHO COUNTY A STRONG THUNDERSTORM IS APPROACHING RED RIVER IDAHO AND ELK CITY IDAHO THIS XSTORM MAY CONTAIN LARGE HAIL AND GUSTY WINDS. IT SHOULD BE MOVING THROUGH THESE LOCATIONS DURING THE NEXT HOUR.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at May 16, 1:03 AM PDT, 1 hour 55 minutes earlier.
Area forecast discussion, May 16, 1:03 AM PDT, 1 hour 55 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 200 AM MDT FRI MAY 16 1997 MONTANA... FLOOD WARNINGS... - ROCK CREEK...MISSOULA AND GRANITE COUNTIES - FISHER AND YAAK RIVERS...LINCOLN COUNTY - FLATHEAD RIVER AT COLUMBIA FALLS AND SOUTH FORK RIVER UPSTREAM FROM HUNGRY HORSE RESERVOIR...FLATHEAD COUNTY - BITTERROOT RIVER...MISSOULA AND RAVALLI COUNTIES - CLARK FORK RIVER FROM MILLTOWN DAM THROUGH MISSOULA...MISSOULA COUNTY - ST. REGIS RIVER AT ST. REGIS...MINERAL COUNTY SMALL STREAM FLOOD WARNINGS... - ASHLEY CREEK...LITTLE BITTERROOT AND STILLWATER RIVERS...FLATHEAD COUNTY - SWAN RIVER...LAKE AND FLATHEAD COUNTY - ALL SANDERS COUNTY - CLEARWATER RIVER...LOLO CREEK AND NINE MILE CREEK...MISSOULA COUNTY FLOOD WATCHES... - NORTH FORK AND MIDDLE FORK FLATHEAD RIVERS...FLATHEAD COUNTY - CLARK FORK RIVER...MINERAL COUNTY - BLACKFOOT RIVER NEAR BONNER...MISSOULA COUNTY - CLARK FORK RIVER BELOW MISSOULA...MISSOULA COUNTY SMALL STREAM FLOOD ADVISORIES... - LINCOLN...FLATHEAD...LAKE...MISSOULA AND MINERAL COUNTIES. IDAHO... FLOOD WATCHES... - CLEARWATER RIVER AT OROFINO...CLEARWATER COUNTY DISCUSSION...00Z ETA OFF TO A REASONABLY GOOD START WITH PRIMARY FEATURES. 5H AXIS OVER PANHANDLE/WESTERN MONTANA WITH DEEPEST MOISTURE LOCATED OVER SOUTHERN IDAHO 100-250K LAYER AS INDICATED BY WV AND OBSERVATION. ETA KEEPS THIS TROPICAL MOISTURE AVAILABLE FOR CONVECTION TODAY. SCATTERED AFTERNOON TSTM AND SHOWERS FAVORED OVER WEST-CENTRAL AND SOUTHWEST INTO THE EVENING. ANOTHER SHOT OF TROPICAL MOISTURE ARRIVES DURING THE MORNING SATURDAY. A RATHER VIGOROUS S/W DEEPENS OVER BRITISH COLUMBIA TODAY AND RIDES OVER CENTRAL ALBERTA BUT SECONDARY SHOT COULD MAKE FOR AN INTERESTING WEATHER DAY ESPECIALLY AS DEEP TROPICAL MOISTURE IN PLACE OVER SOUTHERN ZONES. ALTHOUGH JET DYNAMICS IS WEAK...IT APPEARS TO BE IN PHASE WITH MAX HEATING. AVN IDENTIFIES THIS MOISTURE BUT MOVES IT SOUTH OF THE FORECAST AREA. PREFER ETA CONSIDERING TRAJECTORY OF NORTHWARD MOVING MOISTURE. WILL UP POPS CONSIDERABLY FOR SATURDAY. STOLL LIB .. 080 046/069 ... 33224 FCA BT 078 047/067 042 33224 POL .. 082 051/070 ... 33225 MSO BT 080 048/071 043 33335 HMM .. 084 049/074 ... 33335 BTM .. 078 044/066 ... 33335 S80 .. 084 051/076 ... 33324 P69 .. 082 056/075 ... 33335 SMN .. 081 043/079 ... 33325
Nearby
Severe Thunderstorm Warnings in Idaho, 1997Every severe thunderstorm warning in 1997
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.