Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 16, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 16, 2000, 4:42 PM MDT for Cascade County, Chouteau County, Teton County, Montana. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jun 16, 2000, 4:42 PM MDT (22:42 UTC)
- Expired
- Jun 16, 2000, 5:15 PM MDT
- In force
- 33 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Cascade County, MT, Chouteau County, MT, Teton County, MT
The radar
The Great Falls radar (KTFX), 38 km from the middle of the area, began a volume at 22:45 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 nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 10.7 hours before the alert went out and 68 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
- 55 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 691 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
033 WUUS55 KTFX 162244 SVRGTF MTC013-015-099-162315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 442 PM MDT FRI JUN 16 2000 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME NORTH CENTRAL CASCADE COUNTY IN MONTANA WEST CENTRAL CHOUTEAU COUNTY IN NORTH CENTRAL MONTANA EXTREME EAST CENTRAL TETON COUNTY IN NORTH CENTRAL MONTANA * UNTIL 515 PM MDT * AT 435 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER EXTREME EAST CENTRAL TETON COUNTY...OR ABOUT 17 MILES NORTHWEST OF GREAT FALLS...MOVING SOUTHEAST AT 30 MPH. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN GREAT FALLS. LAT...LON 4775 11159 4762 11140 4787 11099 4803 11122
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 Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 16, 3:00 PM MDT, 1 hour 42 minutes earlier.
Area forecast discussion, Jun 16, 3:00 PM MDT, 1 hour 42 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT FRI JUN 16 2000 MOIST UNSTABLE NORTHWESTERLY FLOW TONIGHT SHOULD STABILIZE LATE TONIGHT AS WEAK UPPER RIDGE BUILDS INTO WESTERN MONTANA LATE TONIGHT AND SATURDAY. TFX RADAR SHOWS PLENTY OF SHOWERS BUT FEW THUNDERSTORMS. HOWEVER...THUNDERSTORMS INCREASING UPSTREAM IN SOUTHWEST ALBERTA...SO WILL CONTINUE SHOWERS AND THUNDERSTORMS LIKELY THIS EVENING. RIDGE MOVING INTO CENTRAL MONTANA SATURDAY NIGHT AND INTO EASTERN MONTANA SUNDAY FOR GOOD WARMING. NEXT UPPER TROUGH MOVING INTO PACIFIC NORTHWEST BY SUNDAY IS OF LOW AMPLITUDE...BUT FLOW MODERATE...WHICH MEANS DOWNSLOPE PLAINS. SO EXPECT SCATTERED SHOWERS AND THUNDERSTORMS MOUNTAINS...ISOLATED PLAINS AND VALLEYS ON SUNDAY. OARD EXTENDED DISCUSSION...MODELS ARE STRIKINGLY SIMILAR IN THEIR SOLUTIONS. THE UKMET AND THE EUROPEAN HAVE COME AROUND TO THE SOLUTION PROPOSED YESTERDAY BY THE MRF AND HINTED AT BY THE NOGAPS REGARDING A MORE AMPLIFIED SHORTWAVE TO EFFECT THE REGION EARLY NEXT WEEK. THE WESTERN ATLANTIC RIDGE WILL REMAIN QUASI STATIONARY THROUGH THE PERIOD WHILE THE PERSISTENT UPPER LEVEL LOW OVER HUDSON BAY FINALLY PULLS OUT. THE EASTERN PACIFIC RIDGE DOES RETROGRADE TO THE WEST EARLY IN THE PERIOD BUT THEN PARKS ITSELF OFF THE COAST ONCE AGAIN. THE WEAK SHORTWAVE RIDGING FOR SUNDAY BREAKS DOWN QUICKLY AS THE NEXT PACIFIC SHORTWAVES DROPS DOWN THE EASTERN PERIPHERY OF THE BUILDING EASTERN PACIFIC RIDGE. MONDAY LOOKS UNSETTLED AS THE SHORTWAVE PASSES ON THROUGH WITH SHOWERS AND THUNDERSTORMS LIKELY. THE WAVE DOES PULL OUT INTO THE PLAINS FOR TUESDAY WITH A FLAT RIDGE AND ZONAL FLOW RETURNING FOR TUESDAY AND WEDNESDAY. A MENTION OF OROGRAPHIC PRECIP ON THESE 2 DAYS SEEMS WARRANTED. AS FAR AS TEMPERATURES ARE CONCERNED...MONDAY WILL BE COOLER THAN NORMAL WITH EXTENSIVE CLOUD COVER AND SHOWERS WITH TUESDAY NEAR NORMAL. WEDNESDAY MAY EVEN BE A BIT WARMER YET AS THE SOUTHWEST FLOW TRIES TO REESTABLISH ITSELF IN ADVANCE OF YET ANOTHER PACIFIC SHORTWAVE, CCF NUMBERS GTF BN 042/070 048/078 049 166212 CTB BN 040/067 047/074 048 166212 HLN BB 042/072 048/080 049 166112 BZN BB 040/070 044/078 045 166112 WEY BB 030/066 035/075 038 166112 DLN BB 040/070 045/078 047 166112 HVR BB 042/068 048/078 047 166112 LWT BB 038/064 044/075 046 167102
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.