Alert archive / Idaho / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 23, NWS Missoula, MT

July 3, 1998Idaho County, Idaho

NWS Missoula, MT issued this severe thunderstorm warning at Jul 3, 1998, 11:06 PM PDT for Idaho County, Idaho. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 3, 1998, 11:06 PM PDT (06:06 UTC)
Expired
Jul 3, 1998, 11:50 PM PDT
In force
44 min
Issued by
NWS Missoula, MT
Area
Whole counties

County Idaho County, ID

What was reported inside it

TimeReportWhereRemark
Jul 3, 11:30 PM PDTThunderstorm Wind 52Kooskia, ID

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 6.1 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.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 00:00Z on 1998-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 415 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 00:00Z on 1998-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
415 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1587 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMSO 040609 RRA
SVRMSO
IDC049-040650-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
1206 AM MDT (1106 PM PDT) SAT JUL 4 1998

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN IDAHO COUNTY IN CENTRAL IDAHO

* UNTIL 1150 PM PDT (1250 AM MDT)

* AT 1100 P.M. PDT...SEVERE THUNDERSTORM INDICATED 10 WEST OF
  KOSKIA...BY NATIONAL WEATHER SERVICE DOPPLER RADAR...MOVING
  NORTHEAST AT 20 MPH.

* SEVERE THUNDERSTORM WILL BE NEAR...
  KOSKIA AT 1130 P.M. PDT


SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN I$NTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

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 Jul 3, 7:30 PM PDT, 3 hours 36 minutes earlier.

Area forecast discussion, Jul 3, 7:30 PM PDT, 3 hours 36 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
830 PM MDT FRI JUL 3 1998

UPPER LOW SPINNING IN SOUTHWEST WASHINGTON SENDING ANOTHER SHORT WAVE
ACROSS EASTERN OREGON WESTERN IDAHO HELPING SCATTERED THUNDERSTORMS
THERE. ELSEWHERE WOULD LIKE TO BACK OFF TO SCATTERED POPS.
TC
...FORECASTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE...

LIB .. 060/078 056/076 ... 295535
FCA WE 058/078 054/075 052 294545
POL .. 060/072 056/068 ... 293545
MSO WE 057/079 054/075 053 294545
HMM .. 056/083 055/080 ... 294545
BTM .. 049/079 049/075 ... 293334
S80 .. 058/078 056/075 ... 295335
P69 .. 060/080 058/076 ... 295445
SMN .. 054/075 052/072 ... 295333

In the hours before

Local storm report, Jul 3, 8:30 PM PDT, 2 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
930 PM MDT FRI JUL 3 1998

TIME(MST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION......

225 PM     LOLO HOT SPRINGS          MT    GOLF BALL SIZED HAIL
07/03/98   MISSOULA

304 PM     HUSON                     MT    ESTIMATED WIND GUSTS
07/03/98   MISSOULA                        55 TO 65 MPH.

315 PM     MISSOULA                  MT    TENNIS BALL SIZED HAIL
07/03/98   MISSOULA                        TARGET RANGE AREA.

316 PM     MISSOULA                  MT    WINDSHIELD BROKEN BY HAIL
07/03/98   MISSOULA

319 PM     MISSOULA                  MT    1 INCH HAIL
07/03/98   MISSOULA

320 PM     MISSOULA                  MT    .75 INCH HAIL
07/03/98   MISSOULA

335 PM     VICTOR                    MT    60 MPH WIND GUST
07/03/98   RAVALLI

340 PM     HAMILTON                  MT    68 MPH WIND GUST
07/03/98   RAVALLI

404 PM     ARLEE                     MT    50 MPH WIND GUST
07/03/98   LAKE

415 PM     POTOMAC                   MT    50 MPH WIND GUST
07/03/98   MISSOULA

440 PM     ST. IGNATIUS              MT    TREE BLOWN DOWN
07/03/98   LAKE

455 PM     DEER LODGE                MT    .75 INCH HAIL
07/03/98   POWELL

520 PM     ROCK CREEK                MT     SEVERAL TREES BLOWN DOWN
07/03/98   GRANITE

TC
Local storm report, Jul 3, 8:30 PM PDT, 2 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
930 PM MDT FRI JUL 3 1998

TIME(MST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION......

225 PM     LOLO HOT SPRINGS          MT    GOLF BALL SIZED HAIL
07/03/98   MISSOULA

304 PM     HUSON                     MT    ESTIMATED WIND GUSTS
07/03/98   MISSOULA                        55 TO 65 MPH.

315 PM     MISSOULA                  MT    TENNIS BALL SIZED HAIL
07/03/98   MISSOULA                        TARGET RANGE AREA.

316 PM     MISSOULA                  MT    WINDSHIELD BROKEN BY HAIL
07/03/98   MISSOULA

319 PM     MISSOULA                  MT    1 INCH HAIL
07/03/98   MISSOULA

320 PM     MISSOULA                  MT    .75 INCH HAIL
07/03/98   MISSOULA

335 PM     VICTOR                    MT    60 MPH WIND GUST
07/03/98   RAVALLI

340 PM     HAMILTON                  MT    68 MPH WIND GUST
07/03/98   RAVALLI

404 PM     ARLEE                     MT    50 MPH WIND GUST
07/03/98   LAKE

415 PM     POTOMAC                   MT    50 MPH WIND GUST
07/03/98   MISSOULA

440 PM     ST. IGNATIUS              MT    TREE BLOWN DOWN
07/03/98   LAKE

455 PM     DEER LODGE                MT    .75 INCH HAIL
07/03/98   POWELL

520 PM     ROCK CREEK                MT     SEVERAL TREES BLOWN DOWN
07/03/98   GRANITE

TC
Local storm report, Jul 3, 9:15 PM PDT, 1 hour 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT...UPDATED
1015 PM MDT FRI JUL 3 1998

TIME(MST)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION......

225 PM     LOLO HOT SPRINGS          MT    1.75 INCH HAIL
07/03/98   MISSOULA

304 PM     HUSON                     MT    55-65 MPH ESTIMATED TSTM
07/03/98   MISSOULA                        GUST

315 PM     MISSOULA                  MT    2.50 INCH HAIL
07/03/98   MISSOULA                        TARGET RANGE AREA.
                                           WINDSHIELD DAMAGE BY HAIL.

319 PM     MISSOULA                  MT    1 INCH HAIL
07/03/98   MISSOULA

320 PM     MISSOULA                  MT    .75 INCH HAIL
07/03/98   MISSOULA

320 PM     MISSOULA                  MT    FLOODING
07/03/98   MISSOULA                        .75-1.00 INCHES OF RAIN
                                           CAUSED FLOODING OF LOW
                                           LYING AREAS.

335 PM     VICTOR                    MT    60 MPH TSTM GUST
07/03/98   RAVALLI

340 PM     HAMILTON                  MT    68 MPH TSTM GUST
07/03/98   RAVALLI

404 PM     ARLEE                     MT    50 MPH TSTM GUST
07/03/98   LAKE

415 PM     POTOMAC                   MT    50 MPH TSTM GUST
07/03/98   MISSOULA

440 PM     ST. IGNATIUS              MT    WIND DAMAGE
07/03/98   LAKE                            TREE BLOWN DOWN

455 PM     DEER LODGE                MT    .75 INCH HAIL
07/03/98   POWELL

520 PM     ROCK CREEK                MT     WIND DAMAGE
07/03/98   GRANITE                     .     SEVERAL TREES BLOWN DOWN

TC

Nearby

Severe Thunderstorm Warnings in Idaho, 1998Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.