Alert archive / North Dakota / Frost Advisories in 2021

Frost Advisory 4, NWS Bismarck, ND

September 30, 202119 counties in North Dakota

NWS Bismarck, ND issued this frost advisory at Sep 30, 2021, 6:18 PM MDT for 19 counties in North Dakota. It took effect at Oct 1, 2021, 2:00 AM MDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Sep 30, 2021, 6:18 PM MDT (00:18 UTC)
In effect from
Oct 1, 2021, 2:00 AM MDT
Expired
Oct 1, 2021, 8:00 AM MDT
In force
6 hr
Issued by
NWS Bismarck, ND

Counties Adams County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, McHenry County, ND, McKenzie County, ND, Mercer County, ND, Mountrail County, ND, Oliver County, ND, Renville County, ND, Slope County, ND, Stark County, ND, Williams County, ND

The radar

The Bismarck radar (KBIS), 153 km from the middle of the area, began a volume at 00:17 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.3 hours before the alert went out and 157 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, Bismarck Municip, ND at 00:00Z on 2021-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Bismarck Municip, ND at 00:00Z on 2021-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2615 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

859 
WWUS73 KBIS 010018
NPWBIS

URGENT - WEATHER MESSAGE
National Weather Service Bismarck ND
718 PM CDT Thu Sep 30 2021

NDZ001>004-009>012-017>021-031>034-040>044-010830-
/O.NEW.KBIS.FR.Y.0004.211001T0800Z-211001T1400Z/
Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry-
McKenzie-Dunn-Mercer-Oliver-McLean-Golden Valley-Billings-Stark-
Morton-Slope-Hettinger-Grant-Bowman-Adams-
Including the cities of Parshall, Hettinger, Wilton, Marmarth,
Glenburn, Sherwood, Killdeer, Dickinson, Minot, Mandan, Beach,
New Leipzig, New Town, Watford City, Columbus, Hazen, New
England, Underwood, Portal, Lignite, Mott, Beulah, Center,
Bowman, Drake, Towner, Velva, Mohall, Garrison, Medora, Washburn,
Bowbells, Carson, Elgin, Halliday, Crosby, Powers Lake, Stanley,
Williston, Turtle Lake, and Bottineau
718 PM CDT Thu Sep 30 2021 /618 PM MDT Thu Sep 30 2021/

...FROST ADVISORY IN EFFECT FROM 3 AM CDT /2 AM MDT/ TO 9 AM CDT /8 
AM MDT/ FRIDAY...

* WHAT...Temperatures as low as 35 will result in frost formation.

* WHERE...Western and portions of central North Dakota.

* WHEN...From 3 AM CDT /2 AM MDT/ to 9 AM CDT /8 AM MDT/ Friday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Edwards
3 follow-up statements
329 
WWUS73 KBIS 010607
NPWBIS

URGENT - WEATHER MESSAGE
National Weather Service Bismarck ND
107 AM CDT Fri Oct 1 2021

NDZ001>004-009>012-017>021-031>034-040>044-011400-
/O.CON.KBIS.FR.Y.0004.211001T0800Z-211001T1400Z/
Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry-
McKenzie-Dunn-Mercer-Oliver-McLean-Golden Valley-Billings-Stark-
Morton-Slope-Hettinger-Grant-Bowman-Adams-
Including the cities of Parshall, Hettinger, Wilton, Marmarth,
Glenburn, Sherwood, Killdeer, Dickinson, Minot, Mandan, Beach,
New Leipzig, New Town, Watford City, Columbus, Hazen, New
England, Underwood, Portal, Lignite, Mott, Beulah, Center,
Bowman, Drake, Towner, Velva, Mohall, Garrison, Medora, Washburn,
Bowbells, Carson, Elgin, Halliday, Crosby, Powers Lake, Stanley,
Williston, Turtle Lake, and Bottineau
107 AM CDT Fri Oct 1 2021 /1207 AM MDT Fri Oct 1 2021/

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT/8 AM MDT/ THIS 
MORNING...

* WHAT...Temperatures as low as 35 will result in frost formation.

* WHERE...Western and portions of central North Dakota.

* WHEN...Until 9 AM CDT/8 AM MDT/ Friday morning.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive 
  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Hollan
587 
WWUS73 KBIS 011115
NPWBIS

URGENT - WEATHER MESSAGE
National Weather Service Bismarck ND
615 AM CDT Fri Oct 1 2021

NDZ012-019>021-034-042-011215-
/O.CAN.KBIS.FR.Y.0004.000000T0000Z-211001T1400Z/
McHenry-Mercer-Oliver-McLean-Morton-Grant-
Including the cities of Velva, Towner, Drake, Beulah, Hazen, 
Center, Garrison, Washburn, Underwood, Wilton, Turtle Lake, 
Mandan, Elgin, Carson, and New Leipzig
615 AM CDT Fri Oct 1 2021 /515 AM MDT Fri Oct 1 2021/

...FROST ADVISORY IS CANCELLED...

Cloud cover has kept temperatures well above freezing.

$$

NDZ001>004-009>011-017-018-031>033-040-041-043-044-011400-
/O.CON.KBIS.FR.Y.0004.000000T0000Z-211001T1400Z/
Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McKenzie-
Dunn-Golden Valley-Billings-Stark-Slope-Hettinger-Bowman-Adams-
Including the cities of Crosby, Bowbells, Powers Lake, Lignite, 
Columbus, Portal, Mohall, Glenburn, Sherwood, Bottineau, 
Williston, New Town, Stanley, Parshall, Minot, Watford City, 
Killdeer, Halliday, Beach, Medora, Dickinson, Marmarth, Mott, 
New England, Bowman, and Hettinger
615 AM CDT Fri Oct 1 2021 /515 AM MDT Fri Oct 1 2021/

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT /8 AM MDT/
THIS MORNING...

* WHAT...Temperatures as low as 35 will result in frost 
  formation.

* WHERE...Western and portions of central North Dakota.

* WHEN...Until 9 AM CDT/8 AM MDT/ Friday morning.

* IMPACTS...Frost could harm sensitive outdoor vegetation. 
  Sensitive outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

Hollan
828 
WWUS73 KBIS 011352
NPWBIS

URGENT - WEATHER MESSAGE
National Weather Service Bismarck ND
852 AM CDT Fri Oct 1 2021

NDZ001>004-009>011-017-018-031>033-040-041-043-044-011500-
/O.EXP.KBIS.FR.Y.0004.000000T0000Z-211001T1400Z/
Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McKenzie-
Dunn-Golden Valley-Billings-Stark-Slope-Hettinger-Bowman-Adams-
Including the cities of Parshall, Hettinger, Glenburn, Sherwood,
Killdeer, Dickinson, Minot, Marmarth, New Town, Watford City,
Columbus, Beach, New England, Portal, Lignite, Mott, Bowman,
Mohall, Medora, Bowbells, Halliday, Crosby, Powers Lake, Stanley,
Williston, and Bottineau
852 AM CDT Fri Oct 1 2021 /752 AM MDT Fri Oct 1 2021/

...FROST ADVISORY WILL EXPIRE AT 9 AM CDT/8 AM MDT/ THIS MORNING...

Although some cool morning temperatures may linger this morning, the 
overall threat for frost has ended.

$$

Anglin

Nearby

Frost Advisories in North Dakota, 2021Every frost advisory in 2021

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.