Alert archive / Montana / Flash Flood Warnings in 2001

Flash Flood Warning 2, NWS Great Falls, MT

June 28, 2001Chouteau County, Fergus County, Judith Basin County, Montana

NWS Great Falls, MT issued this flash flood warning at Jun 28, 2001, 12:14 AM MDT for Chouteau County, Fergus County, Judith Basin County, Montana. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jun 28, 2001, 12:14 AM MDT (06:14 UTC)
Expired: Jun 28, 2001, 4:15 AM MDT
In force: 4 hr
Issued by: NWS Great Falls, MT
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Chouteau County, MT, Fergus County, MT, Judith Basin County, MT

The radar

The Great Falls radar (KTFX), 98 km from the middle of the area, began a volume at 06:16 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, 6.2 hours before the alert went out and 40 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1392 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 2183 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KTFX 280622
FFWTFX
MTC015-027-045-281015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
1214 AM MDT THU JUN 28 2001

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL FERGUS COUNTY IN CENTRAL MONTANA
  NORTH CENTRAL JUDITH BASIN COUNTY IN CENTRAL MONTANA
  EXTREME SOUTHEASTERN CHOUTEAU COUNTY IN NORTH CENTRAL MONTANA

* UNTIL 415 AM MDT

* AT 1211 AM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN MOVING OVER ARROW CREEK. STORMS HAVE BEEN MOVING OVER THE SAME
  AREA FOR SEVERAL HOURS. WATERS ARE RISING RAPIDLY IN THE ARROW
  CREEK DRAINAGE BASIN AND WILL CONTINUE TO RISE IN THE ARROW CREEK
  AND COFFEE CREEK AREAS.


BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER] GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
GREAT FALLS.

LAT...LON 4731 11035 4715 11012 4740 10972 4756 10994

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 27, 6:30 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Chouteau, Judith Basin	45 min
Jun 27, 7:27 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau, Fergus, Judith Basin	48 min
Jun 27, 9:09 PM MDT	Severe Thunderstorm Warning	TFX	Fergus, Judith Basin	51 min
Jun 27, 10:00 PM MDT	Severe Thunderstorm Warning	TFX	Fergus, Judith Basin	45 min
Jun 27, 11:14 PM MDT	Severe Thunderstorm Warning	TFX	Fergus, Judith Basin	46 min
Jun 28, 12:34 AM MDT	Severe Thunderstorm Warning	TFX	Fergus	41 min
Jun 28, 1:45 AM MDT	Severe Thunderstorm Warning	TFX	Meagher	30 min
Jun 28, 2:56 AM MDT	Severe Thunderstorm Warning	TFX	Fergus, Judith Basin	49 min

Nearby

Flash Flood Warnings in Montana, 2001 Every flash flood warning in 2001

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.