Alert archive / Montana / Special Weather Statements in 2011
Special Weather Statement, NWS Great Falls, MT
NWS Great Falls, MT issued this special weather statement at Aug 3, 2011, 4:13 PM MDT for Judith Basin County, Montana. It was in force for 62 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
- Aug 3, 2011, 4:13 PM MDT (22:13 UTC)
- Expired
- Aug 3, 2011, 5:15 PM MDT
- In force
- 62 min
- Issued by
- NWS Great Falls, MT
County Judith Basin County, MT
The radar
The Great Falls radar (KTFX), 75 km from the middle of the area, began a volume at 22:15 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, 10.2 hours before the alert went out and 36 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
- 8 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 2570 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
888
WWUS85 KTFX 032213
SPSTFX
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
413 PM MDT WED AUG 3 2011
MTZ050-032315-
JUDITH BASIN MT-
413 PM MDT WED AUG 3 2011
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL JUDITH BASIN COUNTY UNTIL
515 PM MDT...
AT 412 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 11 MILES SOUTHWEST OF GEYSER...OR 20 MILES WEST
OF STANFORD...MOVING EAST AT 15 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
* LOCATIONS IMPACTED INCLUDE...
GEYSER...
STANFORD...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
IN ADDITION...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 4707 11011 4706 11064 4710 11065 4710 11076
4718 11078 4724 11078 4734 11016
TIME...MOT...LOC 2214Z 262DEG 13KT 4716 11064
$$
COULSTONThe office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 8:01 PM MDT | Special Weather Statement | TFX | Cascade | 44 min |
| Aug 2, 8:48 PM MDT | Special Weather Statement | TFX | Cascade | 42 min |
| Aug 3, 1:28 PM MDT | Special Weather Statement | TFX | Broadwater | 32 min |
| Aug 3, 1:31 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Jefferson, Lewis and Clark | 29 min |
| Aug 3, 2:30 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater | 45 min |
| Aug 3, 3:29 PM MDT | Special Weather Statement | TFX | Fergus | 61 min |
| Aug 3, 4:40 PM MDT | Special Weather Statement | TFX | Cascade | 65 min |
| Aug 3, 4:53 PM MDT | Special Weather Statement | TFX | Chouteau | 67 min |
| Aug 3, 5:11 PM MDT | Special Weather Statement | TFX | Meagher | 49 min |
| Aug 3, 5:27 PM MDT | Special Weather Statement | TFX | Chouteau | 48 min |
| Aug 3, 5:29 PM MDT | Special Weather Statement | TFX | Chouteau | 31 min |
Nearby
Special Weather Statements in Montana, 2011Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.