Alert archive / Montana / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 89, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Aug 3, 2014, 8:45 PM MDT for Garfield County, Petroleum County, Phillips County, Montana. It was in force for 45 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
- Aug 3, 2014, 8:45 PM MDT (02:45 UTC)
- Expired
- Aug 3, 2014, 9:30 PM MDT
- In force
- 45 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Garfield County, MT, Petroleum County, MT, Phillips County, MT
The radar
The Glasgow radar (KGGW), 109 km from the middle of the area, began a volume at 02:48 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 00:00Z, 2.8 hours before the alert went out and 217 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
- 144 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 2630 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 3, 2:54 PM MDT, 5 hours 51 minutes earlier.
Area forecast discussion, Aug 3, 2:54 PM MDT, 5 hours 51 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 254 PM MDT SUN AUG 3 2014 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH TUESDAY... SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE DEVELOPING THIS AFTERNOON ACROSS PORTIONS OF CENTRAL MONTANA AND CURRENTLY ARE MOVING INTO NORTHEAST MONTANA. THE ENVIRONMENT OVER THE FAR NORTHEAST CORNER OF THE STATE AND ALONG THE MONTANA-NORTH DAKOTA BORDER IS MORE FAVORABLE FOR STRONG TO SEVERE STORMS TO INITIATE BY LATE AFTERNOON AND EVENING...MENTIONED LARGE HAIL AND DAMAGING WINDS FOR THOSE AREAS THROUGH MIDNIGHT. MAINLY DRY WEATHER CAN BE EXPECTED TONIGHT AND INTO MONDAY MORNING AS THE CURRENT WAVE MOVES OUT OF THE AREA AND BEFORE THE NEXT ONE APPROACHES MONDAY AFTERNOON. THE NEXT SYSTEM WILL BE STRONGER...AND BY FLATTENING THE RIDGE AND ADVECTING PACIFIC MOISTURE INTO THE REGION...CHANCES FOR SHOWERS AND THUNDERSTORMS WILL BE INCREASING ACROSS NEMONT THROUGH TUESDAY AFTERNOON. CONFIDENCE FOR WETTING RAINS WITH THIS SYSTEM CONTINUES TO IMPROVE...AT THIS POINT A FEW AREAS MAY RECEIVE UP TO 0.50 INCH OF MUCH NEED RAIN BY TUESDAY AFTERNOON. TEMPERATURES WILL LIKELY BE SLIGHTLY COOLER MONDAY AND TUESDAY WITH THE CLOUD COVER AND SHOWERS IN THE AREA. AEC .LONG TERM...TUESDAY NIGHT THROUGH SUNDAY... NORTHEAST MONTANA BEGINS THE EXTENDED FORECAST PERIOD WITH AN OPEN TROUGH MOVING OUT OF THE REGION TO BE REPLACED BY A WEAK UPPER LEVEL RIDGE. EXPECT LINGERING SHOWERS AND THUNDERSTORMS THROUGH TUESDAY NIGHT. WITH THE COOLER TEMPERATURES OF THE TROUGH AND CONTINUED NORTHWEST FLOW ALOFT...WEDNESDAY COULD HAVE NEAR NORMAL TEMPERATURES...OR SLIGHTLY COOLER DEPENDING ON THE MODEL. WITH THE MANY WEAK DISTURBANCES AFFECTING THE AMPLITUDE OF THE RIDGE...ISOLATED SHOWERS AND THUNDERSTORMS SHOULD CONTINUE THROUGH THE PERIOD. NO NOTABLE WEATHER SYSTEMS ARE EXPECTED. BOTH THE EC AND GFS SHOW A COUPLE OF SHORTWAVES THAT COULD INCREASE THE CHANCE FOR SHOWERS AND THUNDERSTORMS BEGINNING AROUND FRIDAY. MADE FEW CHANGES TO THE INHERITED FORECAST. SCT PREVIOUS DISCUSSION... HOT HIGH PRESSURE WILL MAINTAIN HOLD OVER THE WESTERN THIRD OF THE CONUS THROUGH MOST OF THE LONG RANGE. MOST OF THE TIME A RIDGE WILL RIDE UP OUT OF THE HIGH PRESSURE INTO THE CANADIAN ROCKIES AND ACT AS A BLOCKING PATTEN FROM SHORTWAVE JETS. MONSOONAL MOISTURE IS EXPECTED TO SLIDE UP UNDER THE RIDGE AND HIGH PRESSURE AND SHOULD PROVIDE SLIGHT CHANCES FOR SHOWERS DURING ALMOST EVERY PERIOD OF THE LONG RANGE. A LEE SIDE MOUNTAIN TROUGH WILL BE THE FOCUS FOR SHOWERS MOST AFTERNOONS WITH WITH MID LEVEL INSTABILITY CAUSING OVERNIGHT SHOWERS. A FEW NOTICEABLE CHANGES FROM THIS PATTERN DO STAND OUT. TUESDAY NIGHT...A WEAK SHORTWAVE WILL PASS THROUGH THE FLOW AND BRING A SLIGHT BURST OF COLD AIR AND ELEVATED POPS TO CHANCE. FRIDAY NIGHT THROUGH SATURDAY NIGHT...THE RIDGE TO THE WEST IS EXPECTED TO BE DE-AMPLIFIED BRIEFLY BY A LARGE TROUGH MOVING ACROSS THE PACIFIC NORTHWEST. THIS TROUGH WILL HIT SATURDAY AFTERNOON AND EVENING AS A GLANCING FRONT/SHORTWAVE AND IF TIMED RIGHT MAY BE ABLE TO SET OFF SOME SHOWERS WITH SEVERE POTENTIAL. AT THIS TIME COLD AIR DOES NOT LOOK TO MAINTAIN RESIDENCY AS THE WESTERN RIDGE REBOUNDS RATHER FAST POST PASSAGE. GAH && .AVIATION... ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS THE AREA TODAY AND TONIGHT. SOME AFTERNOON AND EVENING THUNDERSTORMS MAY BECOME SEVERE WITH STRONG GUSTY WIND...BRIEF HEAVY RAIN AND LARGE HAIL...MAINLY AFFECTING KOLF AND KSDY. AREA WINDS: EAST TO SOUTHEAST BETWEEN 5 AND 15 KTS. SCT && .GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE. && WEATHER.GOV/GLASGOW
Hazardous weather outlook, Aug 3, 10:53 AM MDT, 9 hours 52 minutes before
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Local storm report, Aug 3, 6:52 PM MDT, 1 hour 53 minutes before
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</html>Local storm report, Aug 3, 7:11 PM MDT, 1 hour 34 minutes before
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</html>Local storm report, Aug 3, 7:23 PM MDT, 1 hour 22 minutes before
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</html>Local storm report, Aug 3, 7:52 PM MDT, 53 minutes before
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</html>Local storm report, Aug 3, 7:53 PM MDT, 52 minutes before
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</html>Local storm report, Aug 3, 8:05 PM MDT, 40 minutes before
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</html>The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 6:10 PM MDT | Special Weather Statement | GGW | Phillips | 65 min |
| Aug 3, 6:20 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 40 min |
| Aug 3, 6:54 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie | 66 min |
| Aug 3, 6:59 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Petroleum, Phillips | 61 min |
| Aug 3, 7:50 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie | 55 min |
| Aug 3, 7:54 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Phillips | 66 min |
| Aug 3, 8:37 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 37 min |
| Aug 3, 8:49 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 56 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2014Every severe thunderstorm warning in 2014
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.