Alert archive / Kansas / Freeze Warnings in 2007

Freeze Warning 1, NWS Topeka, KS

October 27, 200717 counties in Kansas

NWS Topeka, KS issued this freeze warning at Oct 27, 2007, 11:25 AM CDT for 17 counties in Kansas. It took effect at Oct 28, 2007, 4:00 AM CDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 27, 2007, 11:25 AM CDT (16:25 UTC)
In effect from
Oct 28, 2007, 4:00 AM CDT
Expired
Oct 28, 2007, 9:21 AM CDT
In force
5 hr
Issued by
NWS Topeka, KS

Counties Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Douglas County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Marshall County, KS, Nemaha County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS

The radar

The Topeka radar (KTWX), 47 km from the middle of the area, began a volume at 16:25 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

Topeka, KS (KTOP), launched 12:00Z, 4.4 hours before the alert went out and 85 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, Topeka, KS at 12:00Z on 2007-10-27Temperature 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, Topeka, KS at 12:00Z on 2007-10-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
1508 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Topeka, KS wrote its last area forecast discussion before this freeze warning went out at Oct 27, 3:18 AM CDT, 8 hours 7 minutes earlier.

Area forecast discussion, Oct 27, 3:18 AM CDT, 8 hours 7 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TOPEKA KS
318 AM CDT SAT OCT 27 2007

.DISCUSSION...

MOSTLY CLEAR SKIES HAVE BROUGHT SOME TEMPORARY REDUCTIONS IN
VISBY TO PARTS OF NE KS. INCOMING FRONT HAS PASSED THROUGH
HASTINGS...WITH THERMAL RIDGE OUT AHEAD MIXING HEBRON UP TO 46
DEGREES THIS PAST HOUR. DEWPOINTS CONTINUE TO SLOWLY
FALL...EXPECTED TO DROP MORE QUICKLY AS FRONT PUSHES THROUGH.

CLOUDS WILL BE A LITTLE TRICKY TODAY. FRONT BRINGS IN A BROKEN
LINE OF CEILINGS...HOWEVER TIMING WILL BRING CLOUDS IN DURING
BETTER SUNSHINE WHICH MAY BREAK INTO PARTLY CLOUDY SKIES AS A
RESULT. HAVE GRIDS WITH BETTER CLOUD COVER AT NOON THEN DIMINISHING
INTO THE AFTERNOON. TEMPS IN THE 50S EXPECTED MOST AREAS...WITH
PERHAPS A FEW OF THE EASTERN COUNTIES HOLDING ON NEAR THE 60 MARK
BEFORE FALLING LATER TODAY.

OVERNIGHT LOWS ALSO COMPLICATED BY CLOUD COVER...AS SFC HIGH
PRESSURE CENTER SETTLES OVER NE KS DURING PEAK RADIATION AL COOLING
HOURS. SOURCE AIR MASS IS CURRENTLY CLEAR UNDER THE HIGH
CENTER...WITH STRATUS OUT AHEAD AND JUST BEHIND. WILL KEEP GRIDS
NEAR FREEZING WITH CAVEAT THAT MODELS HAVE UNDERDONE COOLING THESE
PAST FEW CLEAR CALM NIGHTS...AND FROST/FREEZE ADVISORY OR WARNING
MAY BE NEEDED IF CLOUD COVER CLEARS OUT. FOR NOW WILL START WITH A
FROST ADVISORY ALL AREAS AND LET DAY SHIFT WATCH SHORT TERM TRENDS
AND UPGRADE OR NOT AS THEY SEE FIT.

WARMUP ON SUNDAY MAY BE SLOW AS HIGH PRESSURE MOVES EAST. WESTERN
ZONES MAY CLIMB LATE IN THE AFTERNOON AS SOUTHERLY WINDS RETURN.
UPPER FLOW TRANSITIONS FROM NORTHWESTERLY TO WESTERLY AS
SHORTWAVES TRAVERSE THE CANADIAN BORDER. THIS WILL BRING WARM
OVERNIGHT LOWS INTO MONDAY AND HIGHS NEAR 70 ON TUESDAY.

WED-FRI...FRONT STILL PROGGED TO MOVE IN ON WED...TODAYS GUIDANCE A
BIT FASTER THAN YTDYS. COULD LEAVE US COOLER FOR THURSDAY AND INTO
FRIDAY. MADE NO CHANGES AT THIS TIME. 67

&&

.AVIATION...

THE LEADING EDGE OF A WEAK COLD FRONTAL BOUNDARY IS EXPECTED TO PUSH
SOUTHEAST THROUGH MHK AND SHOULD BE NEAR OR JUST THROUGH TOP AND FOE
BY 12Z.  11-3.9 SATELLITE IMAGERY INDICATING A NARROW BAND OF STRATA
CU BEHIND THIS BOUNDARY.  CLOUDS ARE IN THE 4-8 KFT RANGE...SO VFR
CONDITIONS ARE EXPECTED IF THIS BAND HOLDS TOGETHER THIS MORNING.
SURFACE HIGH PRESSURE WILL BUILD OVER TAF SITES BY THE END OF THE
PERIOD BRINGING NORTHERLY WINDS TO LIGHT AND VARIABLE AFTER SUNSET.
MODELS INDICATE SOME WEAK ISENTROPIC LIFT IN THE MID LEVELS OVER THE
CWA OVERNIGHT...WHICH MAY PREVENT FOG FROM DEVELOPING IF MID TO
UPPER LEVEL CLOUDS FILL IN.  AT THIS TIME ISENTROPIC LIFT LOOKS
RELATIVELY WEAK WITH HIGH PRESSURE CONDENSATION DEFICITS...SO WILL
PLACE A MENTION OF MVFR FOG IN THE TAF AND MHK FORECASTS IN THE
RIVER VALLEY LATE IN THE 12Z FORECAST.

CAVANAUGH

&&

.TOP WATCHES/WARNINGS/ADVISORIES...FROST ADVISORY FROM 4 AM SUNDAY
TO 10 AM SUNDAY FOR ALL OF NORTHEAST...NORTH CENTRAL AND EAST
CENTRAL KANSAS.

&&
Hazardous weather outlook, Oct 27, 5:04 AM CDT, 6 hours 21 minutes before
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The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 27, 3:34 AM CDTFrost AdvisoryTOPAnderson, Brown, Clay, Cloud, Coffey, Dickinson and 17 more30 hr

Nearby

Freeze Warnings in Kansas, 2007Every freeze warning in 2007

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.