Alert archive / Missouri / Special Weather Statements in 2009

Special Weather Statement, NWS Kansas City, MO

August 3, 2009Caldwell County, Missouri

NWS Kansas City, MO issued this special weather statement at Aug 3, 2009, 2:45 AM CDT for Caldwell County, Missouri. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 3, 2009, 2:45 AM CDT (07:45 UTC)
Expired: Aug 3, 2009, 3:15 AM CDT
In force: 30 min
Issued by: NWS Kansas City, MO

County Caldwell County, MO

The radar

The Pleasant Hill radar (KEAX), 94 km from the middle of the area, began a volume at 07:45 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 7.8 hours before the alert went out and 272 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1305 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 2147 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

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

NWS Kansas City, MO wrote its last area forecast discussion before this special weather statement went out at Aug 2, 11:58 PM CDT, 2 hours 47 minutes earlier.

Area forecast discussion, Aug 2, 11:58 PM CDT, 2 hours 47 minutes before

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Hazardous weather outlook, Aug 2, 12:55 PM CDT, 13 hours 50 minutes before

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In the hours before

Special weather statement, Aug 3, 2:21 AM CDT, 24 minutes before

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Special weather statement, Aug 3, 2:45 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
245 AM CDT MON AUG 3 2009

MOZ021-022-030815-
CALDWELL-CLINTON-
245 AM CDT MON AUG 3 2009

...SIGNIFICANT WEATHER ALERT FOR CALDWELL AND EASTERN CLINTON
COUNTIES UNTIL 315 AM CDT...

AT 242 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES SOUTH OF CAMERON...MOVING EAST AT 25 MPH.

NICKEL SIZE HAIL IS EXPECTED WITH THIS STORM.

THIS STORM WILL BE NEAR...
  KINGSTON AND POLO AROUND 310 AM CDT.
  COWGILL AROUND 315 AM CDT.

LAT...LON 3972 9385 3953 9394 3952 9403 3960 9431
      3972 9429

21

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 3, 2:21 AM CDT	Special Weather Statement	EAX	Clinton	24 min
Aug 3, 8:02 AM CDT	Special Weather Statement	EAX	Grundy	28 min
Aug 3, 8:07 AM CDT	Special Weather Statement	EAX	Chariton	23 min
Aug 3, 8:23 AM CDT	Special Weather Statement	EAX	Linn	37 min
Aug 3, 8:39 AM CDT	Special Weather Statement	EAX	Chariton	36 min
Aug 3, 9:03 AM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Randolph	25 min
Aug 3, 9:30 AM CDT	Special Weather Statement	EAX	Randolph	30 min
Aug 3, 9:43 AM CDT	Special Weather Statement	EAX	Howard	32 min

Nearby

Special Weather Statements in Missouri, 2009 Every special weather statement in 2009

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.