Alert archive / Colorado / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 28, NWS Denver/Boulder, CO

June 1, 2010Sedgwick County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 1, 2010, 6:42 PM MDT for Sedgwick County, Colorado. It was in force for 48 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
Jun 1, 2010, 6:42 PM MDT (00:42 UTC)
Expired
Jun 1, 2010, 7:30 PM MDT
In force
48 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

County Sedgwick County, CO

The radar

The Goodland radar (KGLD), 177 km from the middle of the area, began a volume at 00:45 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.

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 Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 2:50 PM MDT, 3 hours 52 minutes earlier.

Area forecast discussion, Jun 1, 2:50 PM MDT, 3 hours 52 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER CO
250 PM MDT TUE JUN 1 2010

.SHORT TERM...MODERATE WESTERLY FLOW ALOFT WILL CONTINUE OVER
COLORADO THROUGH WEDNESDAY.  IN THE MTNS TNGT...NO MUCH PROGGED FOR
THIS EVENING...BUT SHOULD SEE CLOUD COVER INCREASE AHD OF THE NXT
WEAK SYSTEM.  THIS SYSTEM IS EXPECTED TO BRUSH ACROSS CO LATE TNGT
INTO WEDNESDAY.  MINIMAL QG ASCENT SFC AND ALOFT GENERATED FM THE
MDLS BUT PLENTY OF MID AND UPPER LEVEL MSTR.  WL CONTINUE WITH JUST
A SLIGHT CHANCE OF SHOWERS/TSTMS THIS EVENING AND AGAIN WEDNESDAY
AFTN.  FOR THE PLAINS TONIGHT...WEAK COLD FRONT IS PROGGED TO
BACKDOOR ITS WAY THE CWFA THIS EVENING.  LAPS SFC BASED CAPES IN THE
1500-2000 J/KG RANGE OVER NERN CORNER OF THE STATE WITH SOME CIN AS
WELL.  CLOUD COVER THIS AFTN HAS INHIBITED THE HEATING BUT ITS
STARTING TO BURN OFF.  BEST CHC WILL BE OVER THE FAR NERN PLAINS
WHERE BETTER MOISTURE IS LOCATED AND ALONG THE FRONTAL BOUNDARY AS
IT PUSHES INTO THE AREA.  10-20 PERCENT POPS IN THE GRIDS AND THIS
WILL SUFFICE.  LOW LEVEL MOISTURE IS PROGGED TO ADVECT INTO THE NERN
PLAIN OVERNIGHT SO PATCHY FOG AGAIN A POSSIBILITY.  WL KEEP MENTION
THIS MAINLY EAST OF THE I-25 CORRIDOR FOR LATE TNGT/WEDNESDAY
MORNING.  ON TUESDAY... PLENTY OF MID AND HIGH LEVEL MSTR OVER THE
NERN PLAINS WHICH WILL AGAIN INHIBIT HEATING...SO SHAVED 2-4 DEGREES
OF THE MAX TEMPERATURES.  CAPES FOR WEDNESDAY AFTN NOT TOO HIGH FM
THE NAM SOUNDINGS ONCE DRIER WLY SFC WINDS DEVELOP.  COULD BE MORE
SHOWERS VS TSTMS FOR WEDNESDAY...WL KEEP COVERAGE IN TEH 10-20
PERCENT RANGE.

.LONG TERM...NORTH-NORTHWESTERLY FLOW ALOFT IS PROGGED WEDNESDAY
NIGHT...DECREASING A BIT AND BECOMING MORE WEST-NORTHWESTERLY ON
THURSDAY.  A WEAK UPPER TROUGH MOVES ACROSS THURSDAY NIGHT WITH
NORTHWESTERLY ALOFT PROGGED ON FRIDAY.  THE WIND SPEEDS OF THE FLOW
ALOFT ARE GENERALLY IN THE 40 TO 65 KNOT RANGE THROUGH THE PERIODS.
BENIGN SYNOPTIC SCALE ENERGY IS PROGGED FOR THE FORECAST AREA
THROUGH THE PERIODS.  THE BOUNDARY SCALE FLOW LOOKS TO BE A MIX OF
NORMAL DRAINAGE ALONG WITH SOME DOWNSLOPING.  FOR MOISTURE...THERE
IS SOME IN THE MID AND UPPER LEVELS THROUGH THE PERIODS.  THE
PRECIPITABLE WATER VALUES ARE IN THE 0.60 TO 0.70 INCH RANGE
WEDNESDAY NIGHT...0.70 TO 0.80 INCH RANGE THURSDAY...AND 0.80 TO
0.90 INCH RANGE THURSDAY NIGHT AND FRIDAY.  THE LAPSE RATES ON THE
CROSS SECTIONS HAVE A FAIRLY DECENT MID LEVEL CAP IN PLACE THROUGH
THE PERIODS...TOO MUCH WARMING ALOFT.  THERE IS VERY LITTLE CAPE
OVER THE FORECAST AREA WEDNESDAY EVENING.  SAME FOR LATE DAY
THURSDAY... WITH A TAD MAINLY OVER THE PALMER RIDGE.  THE CAPE IS A
BIT BETTER LATE DAY FRIDAY...WITH VALUES UP TO 600 GR/KG OVER THE
FOOTHILLS AND ADJACENT PLAINS. THE QPF FIELDS HAVE A TAD OF
MEASURABLE RAINFALL WEDNESDAY EVENING OVER THE NORTHEAST BORDER
AREA.  THERE IS ALSO A TAD PROGGED FOR A FEW AREAS OF THE CWA FOR
LATE DAY THURSDAY AND LATE DAY FRIDAY.  PRETTY MEAGER OVERALL.  FOR
POPS WILL GO 0-10%S WEDNESDAY EVENING...LATE DAY THURSDAY AND LATE
DAY FRIDAY.   FOR TEMPERATURES...THURSDAY'S HIGHS WARM UP 4-6 C OVER
WEDNESDAY'S... WITH FRIDAY'S 1-2 C MORE.  FOR THE LATER DAYS...
MODELS KEEP SHOWING AN UPPER RIDGE SOUTHWEST AND SOUTH OF COLORADO
TRYING TO BUILD UP INTO THE STATE.  MOISTURE IS POOR AND
TEMPERATURES LOOK ABOVE SEASONAL NORMALS.

&&

.AVIATION...VFR CONDITIONS WILL PREVAIL THROUGH MUCH OF THE PERIOD
WITH MID AND HIGH LEVEL MOISTURE STREAMING OVER THE AREA.  ISOLD
TSTMS POSSIBLE UNTIL 02Z THEN THE AMS WILL STABILIZE.  COULD SEE LOW
CLOUDS/FOG DVLP AFTN 09Z...ONCE A COLD FRONT BACKDOORS INTO THE
DENVER AREA.  LOOKS LIKE MOST OF THIS SHUD RMN NORTH AND EAST OF
D.I.A. BUT WL MENTION MVFR CIGS/VSBYS IN THE 10-14Z TIME FRAME.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...NONE.

COOP/KOOP
Hazardous weather outlook, Jun 1, 10:39 AM MDT, 8 hours 3 minutes before
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In the hours before

Special weather statement, Jun 1, 4:39 PM MDT, 2 hours 3 minutes before
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Local storm report, Jun 1, 5:03 PM MDT, 1 hour 39 minutes before
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Local storm report, Jun 1, 5:10 PM MDT, 1 hour 32 minutes before
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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 2, 2:47 PM MDTSpecial Weather StatementBOUElbert58 min
Jun 2, 3:11 PM MDTSevere Thunderstorm WarningBOUElbert19 min
Jun 2, 3:34 PM MDTSpecial Weather StatementBOUElbert41 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2010Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.