Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 4, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at May 10, 2000, 9:00 PM MDT for Rosebud County, Montana. It was in force for 60 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
- May 10, 2000, 9:00 PM MDT (03:00 UTC)
- Expired
- May 10, 2000, 10:00 PM MDT
- In force
- 60 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Rosebud County, MT
The radar
The Billings radar (KBLX), 151 km from the middle of the area, began a volume at 02:59 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 |
|---|---|---|---|
| May 10, 9:10 PM MDT | Hail 0.88 | Angela, 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 00:00Z, 3.0 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
- 5 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 2533 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
447 WUUS55 KBYZ 110301 SVRBIL MTC087-110400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BILLINGS MT 900 PM MDT WED MAY 10 2000 THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN ROSEBUD COUNTY IN SOUTHEAST MONTANA * UNTIL 1000 PM MDT * AT 900 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 12 MILES SOUTHWEST OF SUMATRA...OR ABOUT 31 MILES NORTHWEST OF HYSHAM...MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF... NORTHWESTERN ROSEBUD COUNTY. HAIL UP TO ONE INCH IN DIAMETER HAS BEEN REPORTED WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. $$ KUHL LAT...LON 4663 10780 4651 10778 4651 10699 4677 10705
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 10, 1:52 PM MDT, 7 hours 8 minutes earlier.
Area forecast discussion, May 10, 1:52 PM MDT, 7 hours 8 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BILLINGS MT 152 PM MDT WED MAY 10 2000 .THU AND FRI... ALREADY MOIST PATTERN BECOMING WET NEXT 24 HOURS AS STRONG DYNAMICS MOVES INTO FORECAST AREA. BROAD UPPER LOW ROTATING SLOWLY INTO WASHINGTON AND OREGON PROGGED TO REACH WESTERN MONTANA BY 12Z AND BEGIN TO SPLIT OVER THE STATE DURING THE DAY THURSDAY. FAVOR SOLUTION OF AVN/RUC/NGM AS ETA SEEMS TO BE HAVING TROUBLE DEPICTING THE CURRENT SURFACE PATTERN. 15Z RUC SHOWED SURFACE WAVE DEVELOPING AROUND YELLOWSTONE PARK WHILE THE ETA PROGRESSED THIS FEATURE FURTHER EAST OVER SOUTHEAST MONTANA. AVN WAS IN THE MIDDLE...AND WITH CURRENT SURFACE WINDS EAST AT KLVM...BELIEVE THE FURTHER WEST SOLUTIONS ARE FAVORED. FIRST HAVE TO LOOK AT CONVECTIVE THREAT THIS AFTERNOON. RUC INDICATES CAPES OF 600 TO 1200 ACROSS AREA WITH DECENT STRAIGHTLINE HODOGRAPHS. EXPECT TO SEE SOME ORGANIZATION TO THE CELLS WITH SOME SMALL HAIL POSSIBLE WITH WET BULB ZERO LEVELS AROUND 8000 FEET. ALSO SOME WIND GUST POTENTIAL...ESPECIALLY EAST WITH INVERTED V SOUNDINGS. FOR TONIGHT LEFT EXIT REGION OF A 130 KT JET PUSHES INTO REGION AS SHORTWAVE ROTATES NEGATIVELY INTO MONTANA. EXPECT RAIN TO DEVELOP WITH EMBEDDED HEAVIER SHOWERS DUE TO CONTINUED STEEP LAPSE RATES. MAIN QUESTION FOR TONIGHT BECOMES SNOW FOR FAVORED UPSLOPE REGIONS OVER THE BEARTOOTHS AND ABSAROKAS. WILL KEEP SNOW LEVELS AT THE 5000 FOOT LEVEL WITH WARM ENOUGH GROUND TO KEEP SIGNIFICANT ACCUMULATIONS FROM OCCURING...BUT WOULD EXPECT A FEW 2 TO 4 INCH REPORTS FROM STATIONS AT 6000 FEET. FOR THURSDAY...PRECIPITATION COVERAGE SHOULD BE DECREASING THURSDAY MORNING BUT 500 MB TEMPS AT -28 C SHOULD ALLOW SHOWERS TO EASILY DEVELOP THROUGH THE DAY. WILL ALSO BE WATCHING WINDS AS DEEPENING LOW OVER DAKOTAS HELPS TIGHTEN SURFACE GRADIENT. PATTERN REMAINS UNSTABLE FOR THURSDAY NIGHT AND FRIDAY BUT LESS FORCING THUS SHOWERS SHOULD REMAIN IN SCATTERED CATEGORIES. BORSUM .SAT...SUN...AND MON... LATEST MEDIUM RANGE MODELS IN AGREEMENT WITH UPPER LOW CUTTING OFF NEAR 130W ON SATURDAY AND GRADUALLY DRIFTING TO 125W BY MONDAY. THIS MORNINGS 72 HOUR AVN RUN ALSO FALLING IN LINE WITH THIS SCENARIO. WITH CUTOFF SOUTH OF 40N AND NEAR 125W FOR MUCH OF THE WEEKEND...THIS WILL LEAVE FORECAST AREA UNDER GENERAL SOUTHWEST FLOW AS RIDGE BUILDS INTO THE AREA. WILL TREND AWAY FROM THE SHOWERS FOR EACH DAY AND GO TOWARDS MORE PARTLY CLOUDY. WILL GRADUALLY WARM TEMPERATURES THROUGH THE PERIOD AS WELL. MEIER BIL RWBBB 040/052 041/060 042/068 042/070 045/070 599634 53 LVM RWBBB 036/049 040/062 041/067 041/069 041/071 599634 53 HDN RWBBB 039/053 040/064 041/070 041/072 043/072 599634 53 MLS RWBBB 044/054 044/062 045/070 045/070 045/070 598734 53 4BQ RWBBB 043/053 043/063 044/068 044/070 044/070 598734 53 BHK RWBBB 043/053 044/064 045/066 045/069 045/069 598734 53 SHR RWBBB 040/052 041/063 042/069 042/072 042/072 599634 53
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 6:08 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 37 min |
| May 10, 6:49 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Musselshell | 56 min |
Nearby
Severe Thunderstorm Warnings in Montana, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.