Alert archive / Montana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 155, NWS Billings, MT

July 14, 2001Wheatland County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jul 14, 2001, 5:14 PM MDT for Wheatland County, Montana. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 14, 2001, 5:14 PM MDT (23:14 UTC)
Expired
Jul 14, 2001, 6:15 PM MDT
In force
61 min
Issued by
NWS Billings, MT
Area
Whole counties

County Wheatland County, MT

The radar

The Billings radar (KBLX), 117 km from the middle of the area, began a volume at 23:18 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, 11.2 hours before the alert went out and 125 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-pSkew-T log-p diagram, Great_falls, MT at 12:00Z on 2001-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Great_falls, MT at 12:00Z on 2001-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
33 J/kg
Mixed-layer CIN
-230 J/kg
Mixed-layer LCL
2061 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 14, 4:51 PM MDT, 23 minutes earlier.

Area forecast discussion, Jul 14, 4:51 PM MDT, 23 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
451 PM MDT SAT JUL 14 2001

.SUN AND MON...
THUNDERSTORMS ON THE DOWNTURN OVERALL OVER EASTERN ZONES. STILL SOME
WEAK ACTIVITY DOWNSTREAM WITH NEW ETA SHOWING MAIN WAVE TO MOVE UP
INTO SOUTHWEST MONTANA AROUND 12Z SUNDAY MORNING. SHOULD BE ABLE TO
LOWER POPS WESTERN ZONES...BUT WILL LEAVE AS IS IN EASTERN ZONES FOR
NOW. WILL AT IT WILL CLEAR SOME ZONES FROM THE WATCH. RASCH

.TUE...WED...THU...FRI...SAT...

MOIST SOUTHWEST FLOW ALOFT WILL CONTINUE FOR THE ENTIRE EXTENDED
PERIOD...BRINGING A CHANCE FOR THUNDERSTORMS EACH DAY. WITH THE UPPER
LEVEL TROF MOVING INTO THE AREA...TEMPERATURES BECOME SLIGHTLY BELOW
NORMAL BY THE END OF THE PERIOD. MIDDENDORF

    SUN     MON     TUE     WED     THU     FRI     SAT
-----------------------------------------------------------
BIL 062/087 062/092 064/085 063/082 062/082 060/082 060/083
    24/T    44/T    44/T    44/T    43/T    33/T    33/T
LVM 055/085 057/090 057/084 056/081 055/081 053/081 053/082
    34/T    44/T    44/T    44/T    43/T    33/T    33/T
HDN 060/089 060/094 061/089 060/086 059/086 059/085 059/086
    24/T    44/T    44/T    44/T    43/T    33/T    33/T
MLS 065/093 065/096 065/092 065/090 064/089 062/088 062/089
    74/T    44/T    44/T    44/T    43/T    33/T    33/T
4BQ 064/092 064/095 064/090 063/088 062/087 060/086 060/087
    74/T    44/T    44/T    44/T    43/T    33/T    33/T
BHK 063/091 063/094 064/089 063/087 062/086 060/085 060/086
    74/T    44/T    44/T    44/T    43/T    33/T    33/T
SHR 058/089 059/091 060/090 059/088 058/087 058/086 058/087
    44/T    44/T    44/T    44/T    43/T    33/T    33/T

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 6:00 PM MDTSevere Thunderstorm WarningBYZYellowstone60 min
Jul 13, 6:17 PM MDTSevere Thunderstorm WarningBYZStillwater43 min
Jul 13, 6:30 PM MDTSevere Thunderstorm WarningBYZGolden Valley60 min
Jul 13, 6:54 PM MDTSevere Thunderstorm WarningBYZYellowstone66 min
Jul 13, 7:33 PM MDTSevere Thunderstorm WarningBYZMusselshell57 min
Jul 13, 7:35 PM MDTSevere Thunderstorm WarningBYZStillwater55 min
Jul 13, 8:00 PM MDTSevere Thunderstorm WarningBYZBig Horn, Yellowstone60 min
Jul 13, 8:55 PM MDTSevere Thunderstorm WarningBYZBig Horn, Treasure65 min
Jul 13, 8:58 PM MDTFlash Flood WarningBYZBig Horn62 min
Jul 13, 9:25 PM MDTSevere Thunderstorm WarningBYZYellowstone65 min
Jul 13, 9:59 PM MDTSevere Thunderstorm WarningBYZBig Horn61 min
Jul 13, 10:32 PM MDTSevere Thunderstorm WarningBYZRosebud58 min
Jul 14, 3:16 PM MDTSevere Thunderstorm WarningBYZSweet Grass59 min
Jul 14, 4:14 PM MDTSevere Thunderstorm WarningBYZYellowstone61 min
Jul 14, 4:29 PM MDTSevere Thunderstorm WarningBYZCarter, Powder River61 min
Jul 14, 4:45 PM MDTSevere Thunderstorm WarningBYZBig Horn60 min
Jul 14, 4:56 PM MDTSevere Thunderstorm WarningBYZYellowstone64 min
Jul 14, 5:47 PM MDTSevere Thunderstorm WarningBYZBig Horn58 min
Jul 14, 5:56 PM MDTSevere Thunderstorm WarningBYZYellowstone34 min

Nearby

Severe Thunderstorm Warnings in Montana, 2001Every severe thunderstorm 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.