Alert archive / Wisconsin / Frost Advisories in 2010

Frost Advisory 3, NWS Green Bay, WI

May 8, 20107 counties in Wisconsin

NWS Green Bay, WI issued this frost advisory at May 8, 2010, 4:17 AM CDT for 7 counties in Wisconsin. It took effect at May 9, 2010, 3:00 AM CDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
May 8, 2010, 4:17 AM CDT (09:17 UTC)
In effect from
May 9, 2010, 3:00 AM CDT
Expired
May 9, 2010, 8:00 AM CDT
In force
5 hr
Issued by
NWS Green Bay, WI

Counties Brown County, WI, Calumet County, WI, Door County, WI, Kewaunee County, WI, Manitowoc County, WI, Outagamie County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 19 km from the middle of the area, began a volume at 09:18 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

Detroit, MI (KDTX), launched 00:00Z, 9.3 hours before the alert went out and 409 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, Detroit, MI at 00:00Z on 2010-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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, Detroit, MI at 00:00Z on 2010-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 679 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
490 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
679 m²/s²
0-3 km storm-relative helicity
741 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Green Bay, WI wrote its last area forecast discussion before this frost advisory went out at May 8, 3:32 AM CDT, 45 minutes earlier.

Area forecast discussion, May 8, 3:32 AM CDT, 45 minutes before
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Hazardous weather outlook, May 7, 2:52 PM CDT, 13 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
252 PM CDT FRI MAY 7 2010

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-082000-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
MENOMINEE-NORTHERN OCONTO-DOOR-MARATHON-SHAWANO-WOOD-PORTAGE-
WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-CALUMET-
MANITOWOC-SOUTHERN MARINETTE-SOUTHERN OCONTO-
252 PM CDT FRI MAY 7 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
AND NORTHEAST WISCONSIN.

.DAY ONE...TONIGHT

SNOW ACCUMULATIONS OF 3 TO 5 INCHES ARE LIKELY ACROSS NORTH
CENTRAL AND FAR NORTHEAST WISCONSIN TONIGHT...ROUGHLY NORTH OF A
LINE FROM MERRILL TO ANTIGO TO OCONTO TO STURGEON BAY. SOUTH OF
THIS LINE...1 TO 3 INCHES OF SNOW CAN BE EXPECTED ON MAINLY
GRASSY AREAS. WINTER WEATHER ADVISORIES HAVE BEEN POSTED FOR
NORTH CENTRAL AND FAR NORTHEAST WISCONSIN FOR TONIGHT. PERSONS
WITH EARLY WEEKEND TRAVEL PLANS SHOULD LISTEN TO THE LATEST
FORECASTS AND STATEMENTS ON THIS LATE SEASON WINTER STORM.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY

FROST OR FREEZE HEADLINES ARE LIKELY ACROSS THE ENTIRE FORECAST
AREA ON SATURDAY NIGHT...AND ACROSS MUCH OF THE REGION ON SUNDAY
NIGHT.

A POTENT LOW PRESSURE SYSTEM IS EXPECTED TO MOVE ACROSS THE
WESTERN GREAT LAKES REGION TUESDAY AND TUESDAY NIGHT. AT THIS
TIME...MOST OF THE THUNDERSTORM ACTIVITY IS EXPECTED TO PASS
SOUTH OF THE AREA. WE WILL CONTINUE TO MONITOR THIS SYSTEM FOR
ANY SHIFT IN THE STORM TRACK THAT WOULD BRING AN INCREASED CHANCE
OF THUNDERSTORMS TO THE AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO FORWARD SNOWFALL MEASUREMENTS TO THE
NATIONAL WEATHER SERVICE IN GREEN BAY TONIGHT.

LMZ521-522-541>543-082000-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
252 PM CDT FRI MAY 7 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE
MICHIGAN AND THE WATERS OF GREEN BAY.

.DAY ONE...TONIGHT

CONDITIONS HAZARDOUS TO SMALL CRAFT WILL CONTINUE TONIGHT. NORTHWEST
WINDS GUSTING TO NEAR GALE FORCE ARE EXPECTED IN THE SISTER BAY...
GILLS ROCK AND DEATHS DOOR AREAS LATE TONIGHT INTO EARLY SATURDAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY

CONDITIONS HAZARDOUS TO SMALL CRAFT WILL CONTINUE THROUGH SATURDAY...
AND MAY REDEVELOP AGAIN FROM MONDAY NIGHT INTO TUESDAY NIGHT.

MG/TSK

In the hours before

Local storm report, May 8, 12:20 AM CDT, 3 hours 57 minutes before
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Local storm report, May 8, 12:25 AM CDT, 3 hours 52 minutes before
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Local storm report, May 8, 12:31 AM CDT, 3 hours 46 minutes before
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Local storm report, May 8, 12:44 AM CDT, 3 hours 33 minutes before
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Local storm report, May 8, 2:38 AM CDT, 1 hour 39 minutes before
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Local storm report, May 8, 3:12 AM CDT, 1 hour 5 minutes before
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The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 4:17 AM CDTFreeze WarningGRBFlorence, Forest, Langlade, Lincoln, Marathon, Marinette and 9 more28 hr

Nearby

Frost Advisories in Wisconsin, 2010Every frost advisory in 2010

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.