Alert archive / Montana / Flash Flood Watches in 2011
Flash Flood Watch 3, NWS Great Falls, MT
NWS Great Falls, MT issued this flash flood watch at Jul 12, 2011, 2:55 PM MDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Jul 12, 2011, 2:55 PM MDT (20:55 UTC)
- Expired
- Jul 12, 2011, 9:00 PM MDT
- In force
- 6 hr
- Issued by
- NWS Great Falls, MT
- Flood severity
- None
The text
As transmitted, in the capitals the NWS used until 2016.
345 WGUS65 KTFX 122055 FFATFX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE GREAT FALLS MT 255 PM MDT TUE JUL 12 2011 ...FLASH FLOODING POSSIBLE THIS AFTERNOON AND EVENING... .THUNDERSTORMS WILL CONTINUE TO DEVELOP THROUGH THE AFTERNOON AND EVENING AND MOVE THROUGH PORTIONS OF BEAVERHEAD AND JEFFERSON COUNTY. PERIODS OF HEAVY RAINFALL WITH THESE STORMS WILL POTENTIALLY CREATE FLASH FLOODING IN THE WATCH AREA. MTZ008-052-130300- /O.NEW.KTFX.FF.A.0003.110712T2055Z-110713T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BEAVERHEAD-JEFFERSON- INCLUDING THE CITIES OF...DILLON...BOULDER...WHITEHALL 255 PM MDT TUE JUL 12 2011 ...FLASH FLOOD WATCH IN EFFECT UNTIL 9 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST MONTANA... INCLUDING THE FOLLOWING AREAS...BEAVERHEAD AND JEFFERSON. * UNTIL 9 PM MDT THIS EVENING * TRAINING OF THUNDERSTORMS ACROSS THE WATCH AREA WILL POTENTIALLY DROP LARGE AMOUNTS OF RAINFALL PRODUCING FLASH FLOODING. * CREEKS AND STREAMS MAY RISE RAPIDLY AND MOVE OUT OF THEIR BANKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ SCHOTT
2 follow-up statements
033 WGUS65 KTFX 122142 FFATFX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE GREAT FALLS MT 342 PM MDT TUE JUL 12 2011 ...FLASH FLOODING POSSIBLE THIS AFTERNOON AND EVENING... .THUNDERSTORMS WILL CONTINUE TO DEVELOP THROUGH THE AFTERNOON AND EVENING AND MOVE THROUGH PORTIONS OF BEAVERHEAD...JEFFERSON AND LEWIS AND CLARK COUNTIES. PERIODS OF HEAVY RAINFALL WITH THESE STORMS WILL POTENTIALLY CREATE FLASH FLOODING IN THE WATCH AREA. MTZ014-130300- /O.EXA.KTFX.FF.A.0003.000000T0000Z-110713T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CENTRAL AND SOUTHERN LEWIS AND CLARK- INCLUDING THE CITIES OF...HELENA...LINCOLN 342 PM MDT TUE JUL 12 2011 ...FLASH FLOOD WATCH IN EFFECT UNTIL 9 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS EXPANDED THE * FLASH FLOOD WATCH TO INCLUDE A PORTION OF SOUTHWEST MONTANA... INCLUDING THE FOLLOWING AREA...CENTRAL AND SOUTHERN LEWIS AND CLARK. * UNTIL 9 PM MDT THIS EVENING * TRAINING OF THUNDERSTORMS ACROSS THE WATCH AREA WILL POTENTIALLY DROP LARGE AMOUNTS OF RAINFALL PRODUCING FLASH FLOODING. * CREEKS AND STREAMS MAY RISE RAPIDLY AND MOVE OUT OF THEIR BANKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ MTZ008-052-130300- /O.CON.KTFX.FF.A.0003.000000T0000Z-110713T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BEAVERHEAD-JEFFERSON- INCLUDING THE CITIES OF...DILLON...BOULDER...WHITEHALL 342 PM MDT TUE JUL 12 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF SOUTHWEST MONTANA...INCLUDING THE FOLLOWING AREAS...BEAVERHEAD AND JEFFERSON. * UNTIL 9 PM MDT THIS EVENING * TRAINING OF THUNDERSTORMS ACROSS THE WATCH AREA WILL POTENTIALLY DROP LARGE AMOUNTS OF RAINFALL PRODUCING FLASH FLOODING. * CREEKS AND STREAMS MAY RISE RAPIDLY AND MOVE OUT OF THEIR BANKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$ SCHOTT
162 WGUS65 KTFX 130258 FFATFX FLOOD WATCH NATIONAL WEATHER SERVICE GREAT FALLS MT 858 PM MDT TUE JUL 12 2011 ...FLASH FLOOD WATCH WILL EXPIRE AT 9 PM MDT TONIGHT... MTZ008-014-052-130400- /O.EXP.KTFX.FF.A.0003.000000T0000Z-110713T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BEAVERHEAD-CENTRAL AND SOUTHERN LEWIS AND CLARK-JEFFERSON- INCLUDING THE CITIES OF...DILLON...HELENA...LINCOLN...BOULDER... WHITEHALL 858 PM MDT TUE JUL 12 2011 ...FLASH FLOOD WATCH WILL EXPIRE AT 9 PM MDT TONIGHT... THE FLASH FLOOD WATCH FOR PORTIONS OF SOUTHWEST MONTANA WILL EXPIRE AT 9 PM MDT TONIGHT. ISOLATED SHOWERS AND THUNDERSTORMS MAY CONTINUE THROUGH THE NIGHT BUT FLASH FLOODING IS NOT EXPECTED. $$
What forecasters said that day
The local office's own words before this flash flood watch 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 flash flood watch went out at Jul 12, 1:53 PM MDT, 1 hour 2 minutes earlier.
Area forecast discussion, Jul 12, 1:53 PM MDT, 1 hour 2 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 153 PM MDT TUE JUL 12 2011 .UPDATE... A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE MAJORITY OF THE FORECAST AREA UNTIL 9 PM MDT THIS EVENING. A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. && .AVIATION... UPDATED 1737Z. LIGHT WINDS ACROSS THE REGION LATE THIS MORNING WITH MOSTLY CLEAR SKIES...OUTSIDE OF KCTB WHERE SOME LOWER CIGS ALREADY EXIST. BIGGEST CONCERN THROUGH THE PERIOD WILL BE FOR THE NUMEROUS THUNDERSTORMS THAT WILL DEVELOP THIS AFTERNOON AND EVENING. STRONG GUSTY WINDS WILL BE EXPECTED IN AND NEAR THESE STORMS...WITH OUTFLOWS FROM THE STORMS POSSIBLE KEEPING THE WINDS THIS EVENING GUSTY AT TIMES. LOWER VSBYS WILL BE OF CONCERN AS WELL IN THESE STORMS DUE TO BRIEF HEAVY RAIN...HAVE NOT MENTIONED IN TAFS AS YET DUE TO NOT KNOWING EXACTLY WHERE THESE STORMS WILL DEVELOP. PEAK TIME FOR THUNDERSTORMS WILL BETWEEN 23Z AND 5Z ACROSS THE REGION. CLEARING OVERNIGHT WITH CALMER WINDS AS STORMS MOVE OUT OF AREA AS WELL AS DISSIPATE. -SCHOTT && .PREV DISCUSSION... /ISSUED 105 PM MDT TUE JUL 12 2011/ TONIGHT THROUGH THURSDAY...THUNDERSTORMS SOME STRONG TO SEVERE ARE EXPECTED THIS AFTERNOON AND EVENING WITH STRONG WINDS AND LARGE HAIL THE PRIMARY THREATS. STORMS WILL GENERALLY MOVE FROM SOUTHWEST TO NORTHEAST WITH DIFFLUENT FLOW ALOFT AS A DEEPENING UPPER-LEVEL LOW SPINS OVER THE PACIFIC NORTHWEST. SHORTWAVE ENERGY ROTATING AROUND THE LOW WILL PROVIDE DECENT LIFT TO SUPPORT CONVECTION POTENTIAL. DEW POINT VALUES IN THE 50S TO NEAR 60 ARE ALSO SUPPORTING SUFFICIENT MOISTURE FOR HEAVY RAINFALL. STORMS WILL DIMINISH AFTER MIDNIGHT WITH PARTLY CLOUDY SKIES EXPECTED THROUGH WEDNESDAY MORNING. UNSTABLE SOUTHWEST FLOW ALOFT AND MOIST EASTERLY SURFACE FLOW WILL PERSIST INTO WEDNESDAY GIVING THE POTENTIAL FOR ADDITIONAL THUNDERSTORMS...SOME STRONG TO SEVERE IN THE AFTERNOON AND EVENING ON WEDNESDAY. UNSETTLED CONDITIONS WILL CONTINUE ON THURSDAY AND TEMPERATURES WILL REMAIN 5 TO 10 DEGREES ABOVE SEASONAL AVERAGES. MLS THURSDAY NIGHT THROUGH TUESDAY...EXPECT AN UNSETTLED WEATHER PATTERN TO CONTINUE TO RESIDE OVER THE REGION THROUGH FRIDAY NIGHT...THEN THE FIRST FAIRLY STRONG UPPER LEVEL RIDGE OF HIGH PRESSURE OF THE SUMMER SEASON WILL START TO BUILD OVER THE AREA FROM SATURDAY AFTERNOON THROUGH TUESDAY. SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED OVER THE REGION ON THURSDAY NIGHT...WITH THE THUNDERSTORM ACTIVITY SLOWLY DIMINISHING IN COVERAGE AREA BY SATURDAY MORNING. THEN FROM SATURDAY AFTERNOON THROUGH TUESDAY...MOST OF THE THUNDERSTORM ACTIVITY WILL BE CONFINED TO THE MOUNTAINS...BUT AN ISOLATED THUNDERSTORM IS POSSIBLE OVER THE PLAINS FROM TIME TO TIME. EXPECT TEMPERATURES TO START A SLOW WARMING TREND...WITH AFTERNOON HIGHS NEAR NORMAL ON SATURDAY...RISING TO NEARLY 10 DEGREES ABOVE NORMAL BY NEXT TUESDAY. OVERNIGHT LOWS WILL ALSO START TO WARM...AND SHOULD AVERAGE CLOSE TO 5 DEGREES ABOVE NORMAL BY TUESDAY MORNING AS WELL. BRUSDA && .PRELIMINARY POINT TEMPS/POPS... GTF 58 86 56 80 / 60 40 50 30 CTB 55 80 54 76 / 50 40 50 30 HLN 57 86 56 81 / 40 40 40 30 BZN 54 88 52 85 / 40 30 20 20 WEY 43 76 42 74 / 60 20 30 20 DLN 53 82 51 79 / 40 20 20 30 HVR 61 88 59 84 / 60 30 40 30 LWT 57 85 56 82 / 60 30 30 20 && .TFX WATCHES/WARNINGS/ADVISORIES... SEVERE THUNDERSTORM WATCH UNTIL 9 PM MDT THIS EVENING BEAVERHEAD...BLAINE...BROADWATER...CASCADE...CENTRAL AND SOUTHERN LEWIS AND CLARK...CHOUTEAU...EASTERN PONDERA...EASTERN TETON...FERGUS...GALLATIN...HILL...JEFFERSON...JUDITH BASIN... LIBERTY...MADISON...MEAGHER...NORTHERN ROCKY MOUNTAIN FRONT... SOUTHERN ROCKY MOUNTAIN FRONT...TOOLE. && WEATHER.GOV/GREATFALLS
Hazardous weather outlook, Jul 12, 1:51 PM MDT, 1 hour 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREAT FALLS MT 151 PM MDT TUE JUL 12 2011 MTZ008-011-013>015-044>055-132000- BEAVERHEAD-HILL-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK- MADISON-TOOLE-LIBERTY-EASTERN PONDERA-BLAINE- SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-JUDITH BASIN-FERGUS- JEFFERSON-BROADWATER-MEAGHER-GALLATIN- 151 PM MDT TUE JUL 12 2011 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 9 PM MDT THIS EVENING. WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED THIS AFTERNOON AND EVENING. SOME OF THESE STORMS MAY BE SEVERE WITH LOCALLY HEAVY RAINFALL...HAIL AND GUSTY DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS WILL REDEVELOP EACH AFTERNOON FROM WEDNESDAY THROUGH FRIDAY...SOME OF WHICH WILL PRODUCE SMALL HAIL AND STRONG WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED TUESDAY AFTERNOON AND EVENING DUE THE POSSIBILITY OF SEVERE WEATHER. SPOTTERS ARE ENCOURAGED TO MAKE TIMELY REPORTS OF LARGE HAIL...STRONG WINDS OR FLASH FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN GREAT FALLS. MTZ009-010-132000- NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER- 151 PM MDT TUE JUL 12 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED THIS AFTERNOON AND EVENING. SOME OF THESE STORMS MAY BE STRONG WITH LOCALLY HEAVY RAINFALL...SMALL HAIL AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS WILL REDEVELOP EACH AFTERNOON FROM WEDNESDAY THROUGH FRIDAY...SOME OF WHICH WILL PRODUCE SMALL HAIL AND STRONG WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED TUESDAY AFTERNOON AND EVENING DUE THE POSSIBILITY OF SEVERE WEATHER. SPOTTERS ARE ENCOURAGED TO MAKE TIMELY REPORTS OF LARGE HAIL...STRONG WINDS OR FLASH FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN GREAT FALLS. MTZ012-132000- CASCADE- 151 PM MDT TUE JUL 12 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM MDT THIS EVENING. WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED THIS AFTERNOON AND EVENING. SOME OF THESE STORMS MAY BE SEVERE WITH LOCALLY HEAVY RAINFALL...HAIL AND GUSTY DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE MISSOURI RIVER IS FORECAST TO DROP BELOW FLOOD STAGE BY EARLY WEDNESDAY. THE FLOOD WARNING WILL REMAIN IN EFFECT UNTIL THE RIVER LEVEL IS EXPECTED TO STAY BELOW FLOOD STAGE. THUNDERSTORMS WILL REDEVELOP EACH AFTERNOON FROM WEDNESDAY THROUGH FRIDAY...SOME OF WHICH WILL PRODUCE SMALL HAIL AND STRONG WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS REQUESTED TUESDAY AFTERNOON AND EVENING DUE THE POSSIBILITY OF SEVERE WEATHER. SPOTTERS ARE ENCOURAGED TO MAKE TIMELY REPORTS OF LARGE HAIL...STRONG WINDS OR FLASH FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN GREAT FALLS.
In the hours before
Special weather statement, Jul 12, 12:55 PM MDT, 2 hours before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1255 PM MDT TUE JUL 12 2011
MTZ008-121945-
BEAVERHEAD MT-
1255 PM MDT TUE JUL 12 2011
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BEAVERHEAD COUNTY UNTIL
145 PM MDT...
AT 1252 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 19 MILES NORTHEAST OF LEMHI...OR 25 MILES EAST
OF SALMON...MOVING NORTHEAST AT 20 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
* LOCATIONS IMPACTED INCLUDE...
RURAL WESTERN BEAVERHEAD COUNTY...
RURAL CENTRAL BEAVERHEAD COUNTY...
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4543 11329 4527 11293 4497 11336 4502 11346
4505 11346 4506 11350 4509 11352 4511 11353
TIME...MOT...LOC 1855Z 216DEG 17KT 4509 11339
SCHOTTSpecial weather statement, Jul 12, 1:46 PM MDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 146 PM MDT TUE JUL 12 2011 MTZ008-122030- BEAVERHEAD MT- 146 PM MDT TUE JUL 12 2011 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BEAVERHEAD COUNTY UNTIL 230 PM MDT... AT 143 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 16 MILES SOUTHEAST OF JACKSON...OR 27 MILES WEST OF DILLON...MOVING NORTHEAST AT 15 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. * LOCATIONS IMPACTED INCLUDE... POLARIS... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. LAT...LON 4554 11306 4529 11274 4509 11319 4523 11335 TIME...MOT...LOC 1947Z 232DEG 13KT 4521 11317 SCHOTT
Special weather statement, Jul 12, 2:20 PM MDT, 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
220 PM MDT TUE JUL 12 2011
MTZ008-122100-
BEAVERHEAD MT-
220 PM MDT TUE JUL 12 2011
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BEAVERHEAD COUNTY
UNTIL 300 PM MDT...
AT 215 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 11 MILES EAST OF SALMON...MOVING NORTH AT 35 MPH.
HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
* LOCATIONS IMPACTED INCLUDE...
JACKSON...
WISDOM...
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4581 11366 4565 11316 4516 11357 4531 11373
4533 11374
TIME...MOT...LOC 2021Z 194DEG 32KT 4528 11366
SCHOTTLocal storm report, Jul 12, 2:35 PM MDT, 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
235 PM MDT TUE JUL 12 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0234 PM HAIL BASIN 46.27N 112.27W
07/12/2011 E0.50 INCH JEFFERSON MT TRAINED SPOTTER
HEAVY DOWNPOUR ACCOMPANIED THE HAIL.
&&
MPJSpecial weather statement, Jul 12, 2:38 PM MDT, 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
238 PM MDT TUE JUL 12 2011
MTZ012-014-052>054-122130-
BROADWATER MT-CASCADE MT-CENTRAL AND SOUTHERN LEWIS AND CLARK
MT-JEFFERSON MT-MEAGHER MT-
238 PM MDT TUE JUL 12 2011
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN LEWIS AND CLARK...
NORTHWESTERN MEAGHER...NORTHERN JEFFERSON...SOUTHWESTERN CASCADE AND
NORTHWESTERN BROADWATER COUNTIES UNTIL 330 PM MDT...
AT 235 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 10 MILES SOUTHWEST OF MONTANA CITY...OR 11 MILES
SOUTH OF HELENA...MOVING NORTHEAST AT 45 MPH.
HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN.
SPOTTERS HAVE REPORTED HAIL UP TO A HALF INCH IN DIAMETER NORTHWEST
OF BOULDER NEAR BASIN.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...HELENA...MONTANA
CITY...EAST HELENA AND CLANCY.
THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4640 11240 4641 11233 4644 11234 4647 11231
4658 11233 4660 11230 4663 11231 4710 11181
4676 11127 4622 11221 4636 11244
TIME...MOT...LOC 2037Z 225DEG 41KT 4646 11206
MLSLocal storm report, Jul 12, 2:44 PM MDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
244 PM MDT TUE JUL 12 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0235 PM HAIL 9 NNE HELENA 46.72N 111.96W
07/12/2011 E0.70 INCH LEWIS AND CLARK MT TRAINED SPOTTER
&&
MPJThe office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 6:57 PM MDT | Special Weather Statement | TFX | 48 min | |
| Jul 12, 12:55 PM MDT | Special Weather Statement | TFX | Beaverhead | 50 min |
| Jul 12, 1:46 PM MDT | Special Weather Statement | TFX | Beaverhead | 44 min |
| Jul 12, 2:20 PM MDT | Special Weather Statement | TFX | 40 min | |
| Jul 12, 2:38 PM MDT | Special Weather Statement | TFX | Broadwater | 52 min |
| Jul 12, 2:47 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Jefferson, Lewis and Clark | 58 min |
| Jul 12, 3:16 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 44 min |
| Jul 12, 3:54 PM MDT | Special Weather Statement | TFX | Judith Basin | 51 min |
| Jul 12, 3:56 PM MDT | Special Weather Statement | TFX | Cascade | 49 min |
| Jul 12, 4:00 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 45 min |
| Jul 12, 4:46 PM MDT | Special Weather Statement | TFX | Judith Basin | 44 min |
| Jul 12, 5:58 PM MDT | Special Weather Statement | TFX | Beaverhead | 77 min |
Nearby
Flash Flood Watches in Montana, 2011Every flash flood watch in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.