Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 55, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jul 14, 2002, 7:48 PM MDT for Beaverhead County, Montana. It was in force for 57 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 14, 2002, 7:48 PM MDT (01:48 UTC)
- Expired
- Jul 14, 2002, 8:45 PM MDT
- In force
- 57 min
- Issued by
- NWS Great Falls, MT
- Area
- Counties, with a storm outline in the text
County Beaverhead County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 14, 8:15 PM MDT | Hail 1 | Wisdom, MT | A severe thunderstorm produce 1.00 inch near Wisdom. |
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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 14, 3:15 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 14, 6:30 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 1.8 hours before the alert went out and 302 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
- 1325 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 3139 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
610 WUUS55 KTFX 150148 SVRTFX MTC001-150245- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 748 PM MDT SUN JUL 14 2002 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BEAVERHEAD COUNTY IN SOUTHWEST MONTANA * UNTIL 845 PM MDT * AT 748 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES SOUTHWEST OF WISDOM...OR ABOUT 26 MILES NORTHEAST OF SALMON...MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 2 MILES SOUTHEAST OF WISDOM AT 810 PM MDT A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT. LAT...LON 4568 11382 4537 11357 4551 11267 4579 11357 $$ BRUSDA NNNN
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 Jul 14, 3:00 PM MDT, 4 hours 48 minutes earlier.
Area forecast discussion, Jul 14, 3:00 PM MDT, 4 hours 48 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
300 PM MDT SUN JUL 14 2002
.SHORT TERM...INCOMING PACIFIC LOW PRESSURE TROUGH COLLIDING WITH
STRONG...HOT HIGH PRESSURE RIDGE THAT HAS BEEN ENTRENCHED OVER THE
STATE THE PAST SEVERAL DAYS. THUNDERSTORM ACTIVITY INCREASES LATE
THIS AFTERNOON AND THIS EVENING AS COLD FRONT ASSOCIATED WITH TROUGH
PUSHES THROUGH...AND RIGHT REAR QUAD OF JET MAX BECOMES SITUATED OVER
CWA. FORECAST SOUNDINGS SHOW INVERTED V CONFIGURATION WITH
PRECIPITABLE WATER OVER AN INCH THIS AFTERNOON AND EVENING. SO EXPECT
SOME THUNDERSTORMS WILL BECOME SEVERE WITH STRONG WIND...ALONG WITH
THE POSSIBILITY OF BRIEF HEAVY RAIN. FLOW BECOMES WEST-SOUTHWEST
MONDAY WITH A COUPLE OF SMALL DISTURBANCES PUSHING THROUGH. RESULT
SHOULD BE PARTLY CLOUDY SKIES ACROSS MOST OF THE CWA. BEHIND COLD
FRONT...TEMPERATURES TO BE 5 TO 10 DEGREES COOLER MONDAY WITH
ISOLATED SHOWERS OR THUNDERSTORMS...MAINLY SOUTHWEST AS A DISTURBANCE
PUSHES THROUGH. ANOTHER PACIFIC TROUGH APPROACHES THE NORTHWEST COAST
TUESDAY AND WEDNESDAY...AGAIN TURNING THE FLOW TO THE SOUTHWEST.
EMBEDDED DISTURBANCES WILL AGAIN BE STEERED ACROSS THE CWA FOR
ANOTHER CHANCE OF SHOWERS OR THUNDERSTORMS.
.EXTENDED...MEDIUM RANGE MODELS AGAIN SHOWING A LITTLE CONSISTENCY
BUT NOT ENOUGH TO WARRANT HIGH CONFIDENCE. WILL NOT MAKE ANY
SIGNIFICANT CHANGES TO THE CURRENT EXTENDED FORECAST. WEAK RIDGING
THURSDAY OVER THE CWA WITH ENOUGH SOUTHWEST FLOW ALOFT FOR ISOLATED
CONVECTION. ZONAL FLOW ALOFT PERSISTS FRIDAY AND SATURDAY WITH
ISOLATED CONVECTION STILL A POSSIBILITY. AN UPPER TROF MOVES
ONSHORE OF THE WEST COAST SUNDAY WITH AN INCREASING BACKING FLOW
OVER THE CWA. TEMPERATURES WILL REMAIN SLIGHTLY ABOVE SEASONAL
NORMS.
.CCF NUMBERS
GTF BB 060/092 055/092 053 03411
BBBBB 088/053 087/053 088/053 090/053 090 23332222222
CTB BB 055/088 052/088 050 03211
BBBBB 084/050 084/050 086/050 088/050 088 13322111122
HLN BB 062/094 057/092 056 03411
BBBBB 090/054 087/054 088/054 090/054 090 33332222222
BZN BB 057/092 054/090 053 03422
BBBBB 088/050 086/050 087/050 090/050 090 33332222222
WEY BB 047/086 043/085 042 03422
BBBBB 083/042 083/042 084/042 086/042 086 33333333333
DLN BB 058/090 055/088 054 03422
BBBBB 086/051 085/051 086/051 090/051 090 33332222222
HVR BB 062/094 058/092 056 03411
BBBBB 089/055 086/055 088/055 091/055 091 13332211122
LWT BB 063/090 055/090 055 03421
BBBBB 087/055 086/055 087/055 090/055 090 13332222222=
.TFX...RED FLAG WARNING FOR THIS AFTERNOON AND EVENING FOR FIRE
ZONES 112...114...115...116...117...118.
SEVERE THUNDERSTORM WATCH FOR WESTERN AND SOUTHWEST MONTANA.The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 6:03 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Cascade, Lewis and Clark, Meagher | 57 min |
| Jul 14, 6:13 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 47 min |
| Jul 14, 6:48 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 57 min |
| Jul 14, 6:52 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Meagher | 38 min |
| Jul 14, 7:12 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 48 min |
| Jul 14, 7:36 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Teton | 54 min |
| Jul 14, 7:55 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 35 min |
| Jul 14, 7:59 PM MDT | Severe Thunderstorm Warning | TFX | Fergus, Judith Basin | 61 min |
| Jul 14, 8:33 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill | 57 min |
| Jul 14, 8:43 PM MDT | Severe Thunderstorm Warning | TFX | Beaverhead | 62 min |
| Jul 14, 8:58 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Fergus | 62 min |
| Jul 14, 9:56 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 49 min |
| Jul 14, 10:25 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 50 min |
| Jul 14, 10:47 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 43 min |
| Jul 15, 3:08 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater | 37 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2002Every severe thunderstorm warning in 2002
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.