Alert archive / Montana / Tornado Warnings in 2001

Tornado Warning 22, NWS Glasgow, MT

July 25, 2001Wibaux County, Montana

NWS Glasgow, MT issued this tornado warning at Jul 25, 2001, 5:43 PM MDT for Wibaux County, Montana. It was in force for 62 min. 2 reports came from 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, with what was reported inside it.

The facts

Issued
Jul 25, 2001, 5:43 PM MDT (23:43 UTC)
Expired
Jul 25, 2001, 6:45 PM MDT
In force
62 min
Issued by
NWS Glasgow, MT
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Wibaux County, MT

What was reported inside it

TimeReportWhereRemark
Jul 25, 6:25 PM MDTHail 1.75Wibaux, MT
Jul 25, 6:46 PM MDTHail 2.75St Phillip, MT

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 25, 5:15 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.7 hours before the alert went out and 241 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, Glasgow Intl Airport, MT at 12:00Z on 2001-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 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, Glasgow Intl Airport, MT at 12:00Z on 2001-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.19395878Sfc1 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
57 J/kg
Mixed-layer CIN
-184 J/kg
Mixed-layer LCL
1142 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

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

585 
WFUS55 KGGW 252343
TORGGW
MTC109-260045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
543 PM MDT WED JUL 25 2001

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL WIBAUX COUNTY IN NORTHEAST MONTANA

* UNTIL 645 PM MDT

* AT 538 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 5 MILES SOUTH OF WIBAUX...MOVING EAST AT 15 MPH.

* THE TORNADO PRODUCING STORM WILL REMAIN OVER...
  RURAL EASTERN WIBAUX COUNTY

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY
ISSUED FOR THE AREA.

LAT...LON 4700 10431 4682 10429 4680 10357 4707 10359

.END
76

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Glasgow, MT wrote its last area forecast discussion before this tornado warning went out at Jul 25, 2:30 PM MDT, 3 hours 13 minutes earlier.

Area forecast discussion, Jul 25, 2:30 PM MDT, 3 hours 13 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
230 PM MDT WED JUL 25 2001

MSAS ANALYSIS FOR LI/S ARE LOWERING AS CU FIELD DEVELOPS OVER MY SE
ZONES THIS AFTERNOON. A DRY LINE FROM GGW-MLS COMBINED WITH AN UPPER
LEVEL DISTURBANCE MOVING IN FROM THE WEST SHOULD KICK OFF STORMS
ACROSS THIS AREA THIS EVENING. CAPES NEAR 1800 WITH LI/S ABOUT -4
SHOULD BRING SOME STORMS TO SEVERE LIMITS LATER THIS EVENING.

ZONAL FLOW CONTINUES ACROSS THE AREA THROUGH FRIDAY WITH WEAK
DISTURBANCES RIPPLING ACROSS THE AREA. BEST CAPES AND LI/S SHOULD OCCUR
OVER THE SE ZONES WITH CAPES AND LI/S PROBABLY ALLOWING FOR SOME
STORMS TO REACH SEVERE LIMITS. 700 MB TEMPS BELOW 10C AND FORECASTED
SOUNDINGS ACROSS THE CWA SHOW NO NEGATIVE ENERGY (OR CAP) THROUGH
FRIDAY. THEREFORE...WILL GO WITH 20 POPS FOR ALL BUT THE SE ZONES. THERE
I WILL MENTION A 30 POP FOR TONIGHT (WITH A MENTION FOR SEVERE) AND
AGAIN THURSDAY NIGHT.  JAMBA

EXTENDED...GOOD CONTINUITY IN LONG RANGE MODELS CONTINUES BUT
AVN/MRF BEGINNING TO SLOW DOWN PROGRESSION OF THE GULFAK SYSTEM.
REGARDLESS...MT STILL IN STRONG SW FLOW ALOFT BY SAT WITH 20KT
SERLIES BRINGING IN MID-60S DEWPTS. CAPES OVER 2500 J/KG AND VERY
LOW LIS MAY SPELL TROUBLE FOR NEMONT SAT. LIMITING FACTOR SATURDAY
DAYTIME MAY BE HIGH HEIGHTS/WARM MID LEVELS BUT UNSEASONABLY STRONG
FROPA SAT NIGHT SHOULD BE MORE THAN ENUF OF A TRIGGER FOR SEVERE
CONVECTION. COOLER ON SUNDAY...THEN GRADUAL WARMING. SW FLOW ALOFT
PROVIDES TSTORM CHANCE FOR REST OF EXTENDED.     WRIGHT

KGGW 055/084 057/087 063/089 056/081 055/082 054/082 056/083
      BBTTTTT  762222/9563333
KGDV 056/083 057/086 063/088 057/080 055/082 054/082 056/081
      BBTTTTT  763232/9563333

In the hours before

Local storm report, Jul 25, 3:50 PM MDT, 1 hour 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
350 PM MDT WED JUL 25 2001

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0530 PM    10 SW RICHEY              MT   70 MPH TSTM WIND GUST
07/24/01   DAWSON

0605 PM    10 W (GGW)GLASGOW INTL AR MT   1.75 INCH HAIL
07/24/01   VALLEY

0830 PM    20 W VIDA                 MT   .75 INCH HAIL
07/24/01   MCCONE

1030 PM    43 ENE (JDN)JORDAN        MT   FLASH FLOODS
07/24/01   GARFIELD                       WATER OVER ROAD IN 5
                                          PLACES

0300 AM    5 SW (GDV)GLENDIVE-DAWSON MT   FLASH FLOODS
07/25/01   DAWSON                         WATER OVER COUNTY HIGHWAY
                                          261

0305 AM    5 SW (GDV)GLENDIVE-DAWSON MT   .88 INCH HAIL
07/25/01   DAWSON

WRIGHT
Local storm report, Jul 25, 3:50 PM MDT, 1 hour 53 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GLASGOW MT
350 PM MDT WED JUL 25 2001

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0605 PM    10 W (GGW)GLASGOW INTL AR MT   1.75 INCH HAIL
07/24/01   VALLEY

0830 PM    20 W VIDA                 MT   .75 INCH HAIL
07/24/01   MCCONE

0845 PM    20 W VIDA                 MT   .75 INCH HAIL
07/24/01   MCCONE

1030 PM    43 ENE (JDN)JORDAN        MT   FLASH FLOODS
07/24/01   GARFIELD                       WATER OVER ROAD IN 5
                                          PLACES

1140 PM    10 SW RICHEY              MT   70 MPH TSTM WIND GUST
07/24/01   DAWSON

0300 AM    5 SW (GDV)GLENDIVE-DAWSON MT   FLASH FLOODS
07/25/01   DAWSON                         WATER OVER COUNTY HIGHWAY
                                          261

0305 AM    5 SW (GDV)GLENDIVE-DAWSON MT   .88 INCH HAIL
07/25/01   DAWSON

WRIGHT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 6:00 PM MDTSevere Thunderstorm WarningGGWValley60 min
Jul 24, 6:23 PM MDTTornado WarningGGWValley67 min
Jul 24, 7:17 PM MDTSevere Thunderstorm WarningGGWMcCone58 min
Jul 24, 7:30 PM MDTSevere Thunderstorm WarningGGWValley60 min
Jul 24, 8:12 PM MDTSevere Thunderstorm WarningGGWMcCone63 min
Jul 24, 8:33 PM MDTTornado WarningGGWMcCone57 min
Jul 24, 8:35 PM MDTFlash Flood WarningGGWMcCone6 hr
Jul 24, 8:50 PM MDTSevere Thunderstorm WarningGGWValley55 min
Jul 24, 9:33 PM MDTSevere Thunderstorm WarningGGWGarfield57 min
Jul 24, 9:51 PM MDTSevere Thunderstorm WarningGGWMcCone54 min
Jul 24, 9:53 PM MDTSevere Thunderstorm WarningGGWValley67 min
Jul 24, 10:05 PM MDTFlash Flood WarningGGWGarfield6 hr
Jul 24, 10:30 PM MDTSevere Thunderstorm WarningGGWGarfield60 min
Jul 24, 10:44 PM MDTSevere Thunderstorm WarningGGWMcCone61 min
Jul 24, 11:15 PM MDTSevere Thunderstorm WarningGGWGarfield, Valley60 min
Jul 24, 11:16 PM MDTFlash Flood WarningGGWValley6 hr
Jul 24, 11:35 PM MDTSevere Thunderstorm WarningGGWDawson55 min
Jul 24, 11:43 PM MDTSevere Thunderstorm WarningGGWMcCone62 min
Jul 25, 12:01 AM MDTSevere Thunderstorm WarningGGWRichland59 min
Jul 25, 12:15 AM MDTSevere Thunderstorm WarningGGWGarfield60 min
Jul 25, 12:40 AM MDTFlash Flood WarningGGWDawson, Richland6 hr
Jul 25, 12:44 AM MDTSevere Thunderstorm WarningGGWMcCone61 min
Jul 25, 12:53 AM MDTSevere Thunderstorm WarningGGWDawson67 min
Jul 25, 12:58 AM MDTSevere Thunderstorm WarningGGWRichland62 min
Jul 25, 1:42 AM MDTSevere Thunderstorm WarningGGWMcCone63 min
Jul 25, 2:00 AM MDTSevere Thunderstorm WarningGGWWibaux60 min
Jul 25, 2:22 AM MDTSevere Thunderstorm WarningGGWDawson53 min
Jul 25, 4:36 PM MDTSevere Thunderstorm WarningGGWPrairie54 min
Jul 25, 4:49 PM MDTSevere Thunderstorm WarningGGWDawson, Wibaux56 min
Jul 25, 5:45 PM MDTSevere Thunderstorm WarningGGWDawson60 min

Nearby

Tornado Warnings in Montana, 2001Every tornado warning in 2001Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.