Alert archive / Idaho / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 1, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Apr 27, 2000, 7:38 PM PDT for Clearwater County, Idaho. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Apr 27, 2000, 7:38 PM PDT (02:38 UTC)
- Expired
- Apr 27, 2000, 8:45 PM PDT
- In force
- 67 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Clearwater County, ID
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 2.6 hours before the alert went out and 125 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
- 136 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 2355 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KMSO 280241 SVRMSO IDC035-280345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 738 PM PDT THU APR 27 2000 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN CLEARWATER COUNTY IN CENTRAL IDAHO * UNTIL 845 PM PDT * AT 738 PM PDT...SPOTTERS REPORTED A SEVERE THUNDERSTORM 5 MILES EAST OF OROFINO...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... 3 MILES NORTHWEST OF HEADQUARTERS AT 820 PM PDT DAMAGING WINDS IN EXCESS OF 55 MPH ARE LIKELY WITH THIS SEVERE THUNDERSTORM. LARGE HAIL IS POSSIBLE ALONG WITH DEADLY LIGHTNING AND HEAVY RAINFALL. FOR YOUR PROTECTgION...STAY INDOORS AWAY FROM WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A STURDY SHELTER OR WELL PROTECTED AREA. LAT...LON 4650 11629 4638 11611 4669 11556 4690 11619
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 Apr 27, 1:45 PM PDT, 5 hours 53 minutes earlier.
Area forecast discussion, Apr 27, 1:45 PM PDT, 5 hours 53 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 245 PM MDT THU APR 27 2000 WELL DEVELOPED PACIFIC LOW MOVES INTO CANADA TONIGHT WITH COLD FRONT TO TRAIL THROUGH AREA LATE TONIGHT INTO FRIDAY MORNING. AIRMASS BECOMES VERY UNSTABLE BY THIS EVENING ESPECIALLY IDAHO ZONES AND EXPECT SOME THUNDERSTORMS BY LATE AFTERNOON WITH POTENTIAL FOR ISOLATED ACTIVITY THROUGH THE NIGHT. WILL START LIKELY POPS FOR WRN MOST ZONES TONIGHT WITH BEST CHANCE OF PRECIP SPREADING INTO WRN MT FRIDAY MORNING. LOOK FOR BREEZY CONDITIONS BEHIND FRONT FRIDAY AFTERNOON. SOME CONCERN FOR SNOW IN HIGHER MOUNTAINS BY FRIDAY AFTERNOON AS WELL BUT MOST PRECIP WILL BE OVER SO WILL JUST TAPER THINGS OFF TO SHOWERS WITH A CHANCE OF SNOW ABOVE 5000 FEET. SHOULD SEE IMPROVING CONDITIONS SATURDAY NIGHT AND SUNDAY AS SURFACE HIGH BUILDS AGAIN. HOADLEY EXTENDED: H5 RIDGE OVER THE CWA ON SUNDAY CONTINUES INTO TUESDAY AFTERNOON FOR DRY CONDITIONS THROUGH THE EXTENDED PERIOD. SOUTHWEST FLOW ALOFT DEVELOPS OVER IDAHO AND MONTANA DAY 5 AS SHORT WAVE MOVES INTO THE PACIFIC NORTHWEST IN THE LATE AFTERNOON. HARMER
Nearby
Severe Thunderstorm Warnings in Idaho, 2000Every severe thunderstorm warning in 2000
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.