Alert archive / Montana / Special Weather Statements in 2013
Special Weather Statement, NWS Great Falls, MT
NWS Great Falls, MT issued this special weather statement at Jun 18, 2013, 6:49 PM MDT for Pondera County, Montana. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2013, 6:49 PM MDT (00:49 UTC)
- Expired
- Jun 18, 2013, 7:15 PM MDT
- In force
- 26 min
- Issued by
- NWS Great Falls, MT
County Pondera County, MT
The radar
The Great Falls radar (KTFX), 90 km from the middle of the area, began a volume at 00:49 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, 0.8 hours before the alert went out and 129 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
- 1292 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 2533 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jun 18, 5:55 PM MDT, 54 minutes earlier.
Area forecast discussion, Jun 18, 5:55 PM MDT, 54 minutes before
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</html>Hazardous weather outlook, Jun 18, 2:50 PM MDT, 3 hours 59 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE GREAT FALLS MT 250 PM MDT TUE JUN 18 2013 MTZ009>014-044>046-048>050-052>054-191200- NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-CASCADE- CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-TOOLE-LIBERTY- EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON- JUDITH BASIN-JEFFERSON-BROADWATER-MEAGHER- 250 PM MDT TUE JUN 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM THIS EVENING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE THREAT FOR STRONG TO SEVERE THUNDERSTORMS CONTINUES INTO THE DAY ON WEDNESDAY...AND SPREADS EAST ACROSS THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA. SIMILAR THREATS TO THOSE TODAY ARE EXPECTED AGAIN. THE MAIN AREA OF CONCERN ON WEDNESDAY WILL BE EAST OF INTERSTATE 15...WHERE MOIST SOILS MAY NOT BE ABLE TO HANDLE THE POTENTIALLY HEAVY RAINFALL...POSSIBLY RESULTING IN FLASH FLOODING. WESTERLY WINDS WILL BECOME BREEZY IN THE WAKE OF THE SYSTEM ON THURSDAY...POSSIBLY BECOMING STRONG ALONG THE ROCKY MOUNTAIN FRONT. .SPOTTER INFORMATION STATEMENT... ANY SPOTTER REPORTS OF HAIL...STRONG WIND GUSTS...HEAVY RAINFALL... AND/OR FLASH FLOODING WOULD BE GREATLY APPRECIATED. MTZ047-051-191200- BLAINE-FERGUS- 250 PM MDT TUE JUN 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA AND NORTH CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT AN INCREASINGLY MOIST AND UNSTABLE SOUTHWESTERLY FLOW ALOFT WILL BRING A GOOD CHANCE FOR SHOWERS AND THUNDERSTORMS TO THE NORTH CENTRAL AND CENTRAL MONTANA TODAY. SOME STORMS MAY BECOME SEVERE AT TIMES. THREATS FROM SUCH STORMS MAY INCLUDE STRONG GUSTY WINDS AND HAIL...BUT BRIEF HEAVY RAINFALL WILL ALSO BE POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE THREAT FOR STRONG TO SEVERE THUNDERSTORMS CONTINUES INTO THE DAY ON WEDNESDAY...AND SPREADS EAST ACROSS THE PLAINS OF NORTH CENTRAL AND CENTRAL MONTANA. SIMILAR THREATS TO THOSE TODAY ARE EXPECTED AGAIN. THE MAIN AREA OF CONCERN ON WEDNESDAY WILL BE EAST OF INTERSTATE 15...WHERE MOIST SOILS MAY NOT BE ABLE TO HANDLE THE POTENTIALLY HEAVY RAINFALL...POSSIBLY RESULTING IN FLASH FLOODING. WESTERLY WINDS WILL BECOME BREEZY IN THE WAKE OF THE SYSTEM ON THURSDAY...POSSIBLY BECOMING STRONG ALONG THE ROCKY MOUNTAIN FRONT. .SPOTTER INFORMATION STATEMENT... ANY SPOTTER REPORTS OF HAIL...STRONG WIND GUSTS...HEAVY RAINFALL... AND/OR FLASH FLOODING WOULD BE GREATLY APPRECIATED. MTZ008-015-055-191200- BEAVERHEAD-MADISON-GALLATIN- 250 PM MDT TUE JUN 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT AN INCREASINGLY MOIST AND UNSTABLE SOUTHWESTERLY FLOW ALOFT WILL BRING A GOOD CHANCE FOR SHOWERS AND THUNDERSTORMS TO THE SOUTHWEST MONTANA TODAY. SOME STORMS MAY BECOME STRONG AT TIMES...POSSIBLY PRODUCING GUSTY WINDS...SMALL HAIL...AND BRIEF HEAVY RAINFALL. THE BRIEF HEAVY RAINFALL MAY CAUSE RAPID DEBRIS FLOW OR FLASH FLOODING ON SOME BURN SCAR AREAS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE THREAT FOR STRONG THUNDERSTORMS CONTINUES INTO THE DAY ON WEDNESDAY...WITH SIMILAR THREATS AS THOSE TODAY. .SPOTTER INFORMATION STATEMENT... ANY SPOTTER REPORTS OF HAIL...STRONG WIND GUSTS...HEAVY RAINFALL... AND/OR FLASH FLOODING WOULD BE GREATLY APPRECIATED.
In the hours before
Local storm report, Jun 18, 5:04 PM MDT, 1 hour 45 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GREAT FALLS MT
504 PM MDT TUE JUN 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0457 PM HAIL 4 SSE SAINT MARY 48.70N 113.39W
06/18/2013 E1.00 INCH GLACIER MT PUBLIC
MOTORIST ON HIGHWAY 49 REPORTED QUARTER-SIZED HAIL WAS
CURRENTLY FALLING AND HAD DAMAGED HIS CAR.
&&
CORRECTED EVENT
MPJSpecial weather statement, Jun 18, 5:36 PM MDT, 1 hour 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 536 PM MDT TUE JUN 18 2013 MTZ009-046-048-190000- EASTERN PONDERA MT-NORTHERN ROCKY MOUNTAIN FRONT MT-SOUTHERN ROCKY MOUNTAIN FRONT MT- 536 PM MDT TUE JUN 18 2013 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PONDERA AND NORTHERN TETON COUNTIES UNTIL 600 PM MDT... AT 535 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 13 MILES SOUTHWEST OF VALIER...MOVING NORTHEAST AT 20 MPH. HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. * LOCATIONS IMPACTED INCLUDE... VALIER... THIS STORM WILL ALSO AFFECT AREAS ALONG HIGHWAY 89 AROUND THE DUPUYER AREA. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT TUESDAY EVENING FOR WESTERN MONTANA. LAT...LON 4844 11246 4835 11207 4804 11234 4812 11259 TIME...MOT...LOC 2335Z 206DEG 19KT 4816 11240 BRUSDA
Special weather statement, Jun 18, 5:40 PM MDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 540 PM MDT TUE JUN 18 2013 MTZ012-190030- CASCADE MT- 540 PM MDT TUE JUN 18 2013 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CASCADE COUNTY UNTIL 630 PM MDT... AT 534 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 18 MILES EAST OF CASCADE...MOVING NORTH AT 25 MPH. WIND GUSTS UP TO 40 MPH...VERY HEAVY RAIN AND SMALL HAIL ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...GREAT FALLS...BLACK EAGLE...STOCKETT...CENTERVILLE...SAND COULEE...TRACY...ULM AND MALMSTROM AFB. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT TUESDAY EVENING FOR WESTERN MONTANA. LAT...LON 4751 11165 4756 11115 4712 11112 4708 11146 TIME...MOT...LOC 2339Z 173DEG 22KT 4723 11134 MLV
Special weather statement, Jun 18, 6:13 PM MDT, 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 613 PM MDT TUE JUN 18 2013 MTZ012-013-049-190100- CASCADE MT-CHOUTEAU MT-EASTERN TETON MT- 613 PM MDT TUE JUN 18 2013 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN TETON...EXTREME WESTERN CHOUTEAU AND NORTHERN CASCADE COUNTIES UNTIL 700 PM MDT... AT 611 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12 MILES NORTHEAST OF CASCADE...MOVING NORTH AT 25 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...FORT SHAW...POWER... ULM...SUN PRAIRIE...SUN RIVER AND VAUGHN. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT TUESDAY EVENING FOR WESTERN MONTANA. LAT...LON 4770 11191 4776 11131 4731 11133 4725 11175 TIME...MOT...LOC 0013Z 174DEG 21KT 4739 11150 MLV
Local storm report, Jun 18, 6:43 PM MDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
643 PM MDT TUE JUN 18 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0636 PM HAIL 2 W VAUGHN 47.56N 111.59W
06/18/2013 E1.00 INCH CASCADE MT BROADCAST MEDIA
HAIL UP TO QUARTER SIZE FALLING. WINDS ESTIMATED UP TO
60 MPH WITH MINOR TREE DAMAGE.
0636 PM TSTM WND GST 2 W VAUGHN 47.56N 111.59W
06/18/2013 E60 MPH CASCADE MT BROADCAST MEDIA
HAIL UP TO QUARTER SIZE FALLING. WINDS ESTIMATED UP TO
60 MPH WITH MINOR TREE DAMAGE.
&&
BRUSDASpecial weather statement, Jun 18, 6:49 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 649 PM MDT TUE JUN 18 2013 MTZ046-190115- EASTERN PONDERA MT- 649 PM MDT TUE JUN 18 2013 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PONDERA COUNTY UNTIL 715 PM MDT... AT 645 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR BRADY MOVING NORTHWEST AT 25 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. * LOCATIONS IMPACTED INCLUDE... BRADY... CONRAD... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT TUESDAY EVENING FOR WESTERN MONTANA. LAT...LON 4828 11218 4832 11187 4800 11165 4799 11191 TIME...MOT...LOC 0049Z 148DEG 30KT 4807 11187 BRUSDA
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 6:13 PM MDT | Special Weather Statement | TFX | Cascade | 47 min |
| Jun 18, 6:39 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 51 min |
| Jun 18, 7:24 PM MDT | Special Weather Statement | TFX | Toole | 21 min |
| Jun 18, 7:31 PM MDT | Flash Flood Warning | TFX | Pondera, Teton | 3 hr |
| Jun 18, 7:36 PM MDT | Special Weather Statement | TFX | Toole | 24 min |
| Jun 18, 8:08 PM MDT | Flash Flood Warning | TFX | Toole | 4 hr |
| Jun 18, 8:14 PM MDT | Special Weather Statement | TFX | Cascade | 46 min |
| Jun 18, 8:30 PM MDT | Special Weather Statement | TFX | Toole | 45 min |
| Jun 18, 8:51 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 54 min |
| Jun 18, 9:40 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 50 min |
| Jun 18, 10:30 PM MDT | Special Weather Statement | TFX | 45 min | |
| Jun 18, 11:32 PM MDT | Special Weather Statement | TFX | 58 min | |
| Jun 19, 12:09 AM MDT | Special Weather Statement | TFX | Liberty | 51 min |
| Jun 19, 12:39 AM MDT | Special Weather Statement | TFX | Liberty | 36 min |
| Jun 19, 1:15 AM MDT | Special Weather Statement | TFX | Hill | 45 min |
| Jun 19, 5:47 AM MDT | Flash Flood Watch | TFX | 16 hr | |
| Jun 19, 2:48 PM MDT | Special Weather Statement | TFX | Broadwater | 42 min |
| Jun 19, 3:10 PM MDT | Special Weather Statement | TFX | Cascade | 50 min |
| Jun 19, 3:15 PM MDT | Tornado Warning | TFX | Broadwater, Gallatin, Meagher | 30 min |
| Jun 19, 3:29 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Meagher | 46 min |
| Jun 19, 3:49 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 41 min |
| Jun 19, 4:03 PM MDT | Special Weather Statement | TFX | Cascade | 42 min |
| Jun 19, 4:28 PM MDT | Flash Flood Warning | TFX | Lewis and Clark | 4 hr |
| Jun 19, 4:44 PM MDT | Special Weather Statement | TFX | Teton | 61 min |
| Jun 19, 4:49 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark, Teton | 41 min |
| Jun 19, 4:56 PM MDT | Special Weather Statement | TFX | Gallatin | 49 min |
| Jun 19, 4:58 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Judith Basin | 47 min |
| Jun 19, 5:01 PM MDT | Flash Flood Warning | TFX | Lewis and Clark | 119 min |
| Jun 19, 5:22 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 38 min |
| Jun 19, 5:31 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 44 min |
| Jun 19, 5:32 PM MDT | Special Weather Statement | TFX | Broadwater | 43 min |
| Jun 19, 5:35 PM MDT | Special Weather Statement | TFX | Gallatin | 40 min |
| Jun 19, 5:53 PM MDT | Special Weather Statement | TFX | Glacier | 52 min |
Nearby
Special Weather Statements in Montana, 2013Every special weather statement in 2013
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.