Alert archive / Montana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 19, NWS Billings, MT

June 5, 1997Golden Valley County, Musselshell County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 5, 1997, 8:18 PM MDT for Golden Valley County, Musselshell County, Montana. 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: Jun 5, 1997, 8:18 PM MDT (02:18 UTC)
Expired: Jun 5, 1997, 9:20 PM MDT
In force: 62 min
Issued by: NWS Billings, MT
Area: Whole counties

Counties Golden Valley County, MT, Musselshell County, MT

The radar

The Billings radar (KBLX), 67 km from the middle of the area, began a volume at 02:17 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 5, 4:30 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 2.3 hours before the alert went out and 178 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 30 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 1272 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -71 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 5, 2:08 PM MDT, 6 hours 10 minutes earlier.

Area forecast discussion, Jun 5, 2:08 PM MDT, 6 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
200 PM MDT THU JUN 05 1997

RAMSDIS SHOWING AREA OF OUTFLOW FROM EARLY STORMS THIS MORNING
INTERACTING WITH CONVERGENCE LINE ALONG EAST SLOPES...STORMS BEGINNING
TO DEVELOP OVER CENTRAL PORTIONS OF STATE. STORMS ALSO BEGINNING TO
DEVELOP OVER SC PORTIONS OF BIL CWA. DEWPOINTS IN 50S ACROSS THE STATE
WITH SIGNIFICANT WARMING OCCURRING OVER E PORTIONS WHERE CLOUD COVER
IS MINIMAL. TROUGH OF LOW PRESSURE HOLDING OVER CENTRAL PORTIONS OF
STATE AND MODELS PROGG TROUGH TO STAY FAIRLY STATIONARY/WAFFLE NEXT
24-48HRS KEEPING CHANCE OF SVR IN FCST FOR FRIDAY. SOUNDINGS ALSO
CONTINUE TO SHOW AIR MASS DESTABLIZING WITH 1730Z SATELLITE SOUNDING
SHOWING LIS OF -4...EXPECT THIS TO CONTINUE THRU THE EVENING HOURS AS
MAXIMUM HEATING IS REACHED. TEMPS HOWEVER WILL BE SLIGHTLY COOLER AS A
RESULT OF OUTFLOW FROM EARLIER STORMS MOVES ACROSS THE AREA AND AS
STORMS KICK IN EXPECT OUTFLOW FROM DEVELOPING STORMS TO COOL FURTHER.
RIVERS CONTINUE TO RUN FULL IN SC MT WITH LVM NOW AT RECORD LEVELS...
FLOOD WARNINGS/WATCH/ADVISORIES HAVE BEEN EXTENDED THROUGH THE WEEKEND
AND EXPECTED THUNDERSTORMS OVER THE W PORTION OF CWA TO INCREASE FLOWS
EVEN FURTHER OVER NEXT 24HRS. UPDATED FLS SENT OUT AT 1PM THIS AFTN.
TEMPS TO BE FAIRLY SIMILAR FOR FRIDAY AS SYSTEM WAFFLES AS PER ABOVE.
SPRINGER

BIL TB 055/080 055/083 057 544342
LVM .. 053/080 053/082 ... 545353
HDN .. 052/082 055/085 ... 544342
MLS .. 059/084 062/088 ... 542232
4BQ .. 054/083 058/088 ... 542232
BHK .. 056/080 058/084 ... 542232
SHR TB 051/078 053/081 055 544342

The office that day

Everything else NWS Billings, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 7:20 PM MDT	Severe Thunderstorm Warning	BYZ	Wheatland	65 min
Jun 5, 7:26 PM MDT	Severe Thunderstorm Warning	BYZ	Sweet Grass	64 min
Jun 5, 8:00 PM MDT	Tornado Warning	BYZ	Wheatland	35 min
Jun 5, 8:11 PM MDT	Flash Flood Warning	BYZ	Sweet Grass	4 hr
Jun 5, 8:16 PM MDT	Flash Flood Warning	BYZ	Wheatland	3 hr
Jun 5, 8:28 PM MDT	Severe Thunderstorm Warning	BYZ	Sweet Grass	62 min
Jun 5, 8:45 PM MDT	Tornado Warning	BYZ	Musselshell	35 min
Jun 5, 9:23 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	62 min
Jun 5, 9:34 PM MDT	Severe Thunderstorm Warning	BYZ	Sweet Grass	61 min
Jun 5, 10:25 PM MDT	Flash Flood Warning	BYZ	Sweet Grass, Wheatland	4 hr
Jun 5, 10:32 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	33 min
Jun 5, 10:50 PM MDT	Flash Flood Warning	BYZ	Musselshell	4 hr
Jun 5, 11:10 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Musselshell	65 min
Jun 6, 12:03 AM MDT	Flash Flood Warning	BYZ	Musselshell, Yellowstone	117 min
Jun 6, 12:53 AM MDT	Flash Flood Warning	BYZ	Rosebud	117 min
Jun 6, 5:08 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon	62 min

Nearby

Severe Thunderstorm Warnings in Montana, 1997 Every 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.