Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 52, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jun 22, 2002, 6:47 PM MDT for Rosebud County, Montana. It was in force for 58 min. 4 reports 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
- Jun 22, 2002, 6:47 PM MDT (00:47 UTC)
- Expired
- Jun 22, 2002, 7:45 PM MDT
- In force
- 58 min
- Issued by
- NWS Billings, MT
- Area
- Counties, with a storm outline in the text
County Rosebud County, MT
The radar
The Billings radar (KBLX), 151 km from the middle of the area, began a volume at 00:50 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 7:12 PM MDT | Hail 0.75 | Lame Deer, MT | |
| Jun 22, 7:25 PM MDT | Hail 0.75 | Birney, MT | |
| Jun 22, 7:30 PM MDT | Hail 1.75 | Birney, MT | |
| Jun 22, 7:30 PM MDT | Hail 1.25 | Birney, MT | Hail piled one foot deep. Windows broken. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 22, 1:45 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 0.8 hours before the alert went out and 221 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
- 1898 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 1350 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.7
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 22, 2:23 PM MDT, 4 hours 24 minutes earlier.
Area forecast discussion, Jun 22, 2:23 PM MDT, 4 hours 24 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
223 PM MDT SAT JUN 22 2002
.SHORT TERM...VALID FOR SUN...MON...TUE...
WEATHER PATTERN WILL TREND TOWARDS STABILIZATION THE NEXT FEW DAYS LOW
LEVEL MOISTURE FIELDS WILL NOT SHOW MUCH AIRMASS CHANGE. HOW MUCH RAIN
FALLS TODAY AND TONIGHT MAY DICTATE HOW MUCH DIURNAL SHOWER ACTIVITY
OCCURS...ESPECIALLY FOR MONDAY AND TUESDAY. CURRENTLY WATCHING
CONVECTIVE TRENDS AND AM NOT CONFIDENT WITH MODEL SOLUTIONS AS A LOT
OF STRONG CONVECTION HAS DEVELOPED OVER SOUTHWEST WYOMING AND SOUTHEAST
IDAHO...AND WOULD NOT EXPECT THE UPPER WAVE TO BE FILLING QUITE AS
FAST AS PROGS INDICATE. WILL CONTINUE THE CURRENT ACTIVE WEATHER
FORECAST FOR TONIGHT AS MOISTURE CONTENT IN THE AREA IS QUITE HIGH AND
AIRMASS SHOULD STAY UNSTABLE UNTIL THE UPPER TROF PASSES...THOUGH THE
BEST LIFT SHOULD BE OCCURING IN THE LATE AFTERNOON. FOR SUNDAY THE
UPPER TROF STARTS OFF OVER CENTRAL MONTANA AND SLOWLY LIFTS ACROSS
NORTHEAST MONTANA. WITH THE STRONG CONVECTION UPSTREAM...PREFER THE
SLOWER AVN TIMING AND WILL HAVE SCATTERED POPS FOR MOST OF THE AREA ON
SUNDAY. SHORTWAVE RIDGING WILL HELP DISSIPATE ACTIVITY ON SUNDAY NIGHT
BUT MONDAY SHOWS ZONAL FLOW WITH LITTLE REAL AIRMASS CHANGE AT THE LOW
LEVELS. WILL PUT A SLIGHT CHANCE OF SHOWERS FOR MONDAY AS
DESTABILZATION SHOUDL OCCUR WITH WARMER TEMPERATURES. TUESDAY LOOKS
QUIET AS AN UPPER LEVEL RIDGE BEGINS TO STRENGTHEN OVER THE AREA.
BORSUM
.LONG TERM...VALID FOR WED...THU...FRI...SAT...
MODELS IN SLIGHT DISAGREEMENT IN THE EXTENDED. MRF AND ECMWF SHOW A
WEAK TROUGH AND SW FLOW ALOFT MOVING ACROSS THE AREA WED INTO EARLY
FRI WITH THE UKMET WANTING TO PLACE A RIDGE OF HIGH PRESSURE OVER THE
NORTHERN ROCKIES. WILL LEAN TOWARD THE MRF AND ECMWF AS SW FLOW ALOFT
WITH SHORTWAVES IS A GOOD PATTERN FOR US THIS TIME OF YEAR. THIS PATTERN
CONTINUES INTO EARLY FRI. HAVE DECIDED TO INTRODUCE POPS ALL AREAS WED
AND THUR WITH JUST THE EAST ON FRI. BY FRI...HIGH PRESSURE CENTERED
OVER CENTRAL COLORADO BEGINS TO BUILD ACROSS THE WESTERN HALF OF
THE FORECAST AREA. THIS RIDGE WILL RETROGRADE INTO SOUTHERN IDAHO SAT
AND SUN PROVIDING A NW FLOW ALOFT ACROSS THE ENTIRE AREA. A WEAK WAVE
MAY ROTATE AROUND THE RIDGE WITHIN THIS FLOW LATE SAT INTO SUN BUT
WILL NOT INTRODUCE POPS AT THIS TIME. WILL LOWER POPS A FEW DEGREES
EACH DAY DUE TO MORE CLOUDS AND POSSIBLE SHOWERS AND THUNDERSTORMS.
HOWEVER...READINGS WILL STILL BE ABOUT 8-10 DEGREES ABOVE NORMAL FOR
THE PERIOD. HOOLEY
SUN MON TUE WED THU FRI SAT
-----------------------------------------------------------
BIL 061/083 055/084 059/088 062/089 064/089 064/087 062/088
83/T 00/U 00/B 03/T 33/T 30/U 00/U
LVM 055/080 049/081 054/085 057/085 059/085 059/083 057/084
73/T 02/T 20/B 03/T 33/T 30/U 00/U
HDN 063/084 055/085 058/089 060/090 062/090 062/088 060/089
83/T 00/U 00/B 03/T 33/T 33/T 00/U
MLS 064/078 057/084 061/089 064/090 066/090 066/088 064/090
83/T 30/U 00/B 03/T 33/T 33/T 33/J
4BQ 064/078 060/086 061/089 063/090 065/090 065/088 063/089
83/T 00/U 00/B 03/T 33/T 33/T 00/U
BHK 062/077 057/085 059/087 062/088 064/088 064/086 062/087
83/T 30/U 00/B 03/T 33/T 33/T 33/J
SHR 063/083 054/084 054/086 057/088 059/088 059/087 057/087
83/T 00/U 00/B 03/T 33/T 33/T 00/U
.BYZ...
MT...SEVERE THUNDERSTORM WATCH GOLDEN VALLEY...WHEATLAND...YELLOWSTONE
NORTHERN ROSEBUD...MUSSELSHELL AND TREASURE COUNTIES UNTIL
7 PM.
WY...NONE.The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 6:07 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 23 min |
| Jun 22, 6:14 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River | 61 min |
| Jun 22, 6:44 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 61 min |
| Jun 22, 7:19 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 56 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2002Every severe thunderstorm warning in 2002
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; radar from the NEXRAD Level II archive.