Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 6, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at May 28, 2002, 4:52 PM MDT for Yellowstone County, Montana. It was in force for 38 min. 2 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
- May 28, 2002, 4:52 PM MDT (22:52 UTC)
- Expired
- May 28, 2002, 5:30 PM MDT
- In force
- 38 min
- Issued by
- NWS Billings, MT
- Area
- Counties, with a storm outline in the text
County Yellowstone County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 28, 4:55 PM MDT | Thunderstorm Wind 60 E | Billings, MT | |
| May 28, 5:35 PM MDT | Thunderstorm Wind 60 E | Shepherd, MT |
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
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 10.9 hours before the alert went out and 284 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1956 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 May 28, 3:04 PM MDT, 1 hour 48 minutes earlier.
Area forecast discussion, May 28, 3:04 PM MDT, 1 hour 48 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT...COR TO CCF NUMBERS...
304 PM MDT TUE MAY 28 2002
.SHORT TERM...VALID FOR WED...THU...FRI...
FAIRLY STRONG SHORTWAVE CURRENTLY PUSHING ACROSS WESTERN MONTANA. BEST
DYNAMICS WITH THE WAVE PUSHING ACROSS NORTHERN MONTANA. WEAK
RETURNS ALREADY SHOWING UP IN WESTERN/CENTRAL ZONES EARLY THIS AFTERNOON
ON RADAR. EXPECT SCATTERED THUNDERSTORMS TO PUSH ACROSS THE COUNTY
WARNING AREA TONIGHT...ENDING WEST THEN EAST. DEWPOINTS HANGING IN UPPER
40S EASTERN ZONES WITH FAIR LIS AND SOME CAPE. WITH INVERTED V SOUNDING
WILL HAVE TO MONITOR THIS AREA FOR GUSTY WINDS. BUT OVERALL CAPE AND
SHEAR NOT SUPPORTING TOO MUCH AS FAIR AS SEVERE CHANCES GO THIS
EVENING.
WEDNESDAY...UPPER RIDGE REMAINS OVER AREA. LOW LEVEL TEMPERATURES
INCREASE FOR A 3-5 DEGREE WARM UP ACROSS AREA. VERY LITTLE IN THE WAY
OF FORCING SHOWING UP ON MODELS AND LITTLE TO NO INSTABILITY OVER AREA
AND WILL GO DRY INTO WEDNESDAY NIGHT.
THURSDAY...UPPER RIDGE REMAINS IN PLACE. WEAK FORCING MOVES ACROSS
AREA...MAINLY TO THE NORTH. AGAIN VERY LITTLE INSTABILITY TO WORK WITH
BUT SOUNDING DATA SUGGESTS SOME INSTABILITY OVER HIGHER TERRAIN FOR
ISOLATED POPS WESTERN MOUNTAIN ZONES. MODELS INDICATING SOME EASTERLY
FLOW AT LOW LEVELS SO WONT GET TOO WARM WITH TEMPERATURES.
FRIDAY...UPPER RIDGE GETS FLATTENED A BIT BUT AGAIN VERY LITTLE
SHORTWAVE ENERGY TO FIND. WILL GO WITH DRY AND NEARLY PERSISTENT
TEMPERATURES FROM THURSDAY. RASCH
.LONG TERM...VALID FOR SAT...SUN...MON...TUE...
AVN BRINGS A STRONG SHORT WAVE ACROSS SOUTHERN MONTANA ON SATURDAY.
SURFACE LOW PROGGED TO MOVE ACROSS CENTRAL WYOMING DURING THE DAY
SATURDAY WHICH WILL HELP TO BRING A GOOD WIND SHEAR PROFILE TO SC/SE MT.
MOISTURE WILL ALSO BE ADVECTING INTO THE AREA...HELPING TO DESTABILIZE
THE ATMOSPHERE. BASED ON ABOVE REASONING...WILL RAISE POPS FOR SATURDAY.
AS THE WAVE KICKS EAST ON SUNDAY...WEAK SHORT WAVE RIDGING WILL TAKE
PLACE OVER THE AREA. FLOW ALFOT BECOMES MORE SOUTHWEST OVER SC/SE MT
AS WEST COAST TROF BEGINS SHIFTING EASTWARD...BRINGING MORE SHORT
WAVE ENERGY THROUGH THE AREA. PACIFIC COLD FRONT WILL ALSO ACCOMPANY THE
TROF ON MONDAY WHICH SETS UP GOOD SURFACE CONVERGENCE. IN ADDITION...MRF
IS INDICATING A SUBTROPICAL MOISTURE CONNECTION AND WILL THUS CONTINUE
SCATTERED CHANCE OF PRECIPITATION MONDAY AND TUESDAY. AS WEST COAST TROF
MOVES EAST SUNDAY...HEIGHTS AND THICKNESS VALUES OVER SC/SE MT BEGIN
LOWERING. WILL ADJUST TEMPERATURES DOWN A FEW DEGREES FOR SUNDAY AND
MONDAY. RICHMOND
WED THU FRI SAT SUN MON TUE
-----------------------------------------------------------
BIL 053/084 056/085 053/083 049/080 045/076 046/068 043/068
40/B 00/B 00/B 00/B 02/T 23/T 30/B
LVM 048/082 046/082 043/080 048/077 043/073 044/067 041/067
40/B 02/T 20/B 34/T 43/T 34/T 30/B
HDN 051/086 054/086 051/084 049/080 044/076 045/069 042/069
40/B 00/B 00/B 00/B 02/T 23/T 30/B
MLS 055/086 057/086 054/084 047/076 045/075 046/071 043/071
40/B 00/B 00/B 00/B 02/T 23/T 30/B
4BQ 054/085 056/085 053/083 048/078 046/076 047/072 044/072
40/B 00/B 00/B 24/T 43/T 34/T 30/B
BHK 053/083 055/084 052/082 046/074 044/073 045/071 042/071
40/B 00/B 00/B 00/B 02/T 23/T 30/B
SHR 049/082 051/085 048/082 047/077 045/074 046/072 043/072
40/B 00/B 00/B 34/T 43/T 35/T 30/B
.BYZ...
MT...NONE.
WY...NONE.The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 5:32 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 58 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.