IEM Daily Bulletin
Iowa Mesonet
mesonet at mesonet.agron.iastate.edu
Thu May 10 11:01:22 CDT 2007
Iowa Environmental Mesonet Daily Bulletin
Data valid for 09 May 2007
> News
+----------------------------------------------
| Title : NEXRAD composites
| Date : 09 May 11:13 PM
| Author: Daryl Herzmann
| URL : http://mesonet.agron.iastate.edu/data/gis/images/4326/USCOMP/
+----------------------------------------------
The IEM has been generating nationwide NEXRAD composites since
2003 and archiving them every 5 minutes. The compositing was
done in a very simplistic manner and the image was often very
messy due to birds, nightime inversions, and other strange things
that can happen with the NWS RADAR. The result would be to
have blue blobs all over the image...
Tonight I have implemented a routine to compare the reflectivity
values against the "net echo top" product. The code looks for
reflectivity profiles that are at or above 10,000 feet. This
will cut down a lot on the blue blobs, but also negatively impacts
being able to see things like boundaries and perhaps winter precip.
So, at the referenced URL, there are two newly named products.
- "net_0" Current composite echo tops
- "n0r_full_0" The reflectivity composite using the old method
Sorry not to have done this sooner. Please let me know what you
think. I will be watching this closely to see how well it works.
+----------------------------------------------
| Title : April AWOS data uploaded
| Date : 09 May 11:27 AM
| Author: Daryl Herzmann
| URL : http://mesonet.agron.iastate.edu/request/awos/1min.php
+----------------------------------------------
The 1 minute interval data for April from the Iowa AWOS network
has been uploaded to the iem data coffers. The DOT also graciously
sent along the 1 minute data for 6 May (the gravity wave case) for
folks to use if they desire.
> Yesterday's Daily Feature
+----------------------------------------------
http://mesonet.agron.iastate.edu/onsite/features/cat.php?day=2007-05-09
| Title : Warm May Nights
| Date : 09 May 06:56 AM
| Votes : Good: 15 Bad: 5
+----------------------------------------------
Many times we focus on high temperatures as an indication if our weather has been warmer than expected. A plot of observed highs for the month from Ames shows that temperatures have been above and below normal. Check out the low temperatures! They have been running well above normal and the forecast for the next 7 days continues this trend.
> NWS Watch/Warning Summary
*** Products issued on 09 May 2007
Summary +_________ By WFO ____________+ Watches
Type US IA | ARX DVN DMX OAX FSD | US
Tornado 14 0 | 0 0 0 0 0 | 1
Svr Tstorm 73 0 | 0 0 0 0 0 | 1
Fl Flood 0 0 | 0 0 0 0 0 | N/A
ARX = LaCrosse, WI DVN = Davenport, IA DMX = Des Moines, IA
OAX = Omaha, NE FSD = Sioux Falls, SD
> Network Metrics
-----------------------------------------------------------------
Iowa ASOS Reporting Stations: 15 Obs Received: 359
-----------------------------------------------------------------
High Air Temp[F] : 82.94 [02:52 PM] SUX SIOUX CITY
High Dew Point[F] : 59.00 [01:53 AM] BRL BURLINGTON
Peak Gust[knots] : 22.00 [01:52 PM] DVN QUAD CITIES
-----------------------------------------------------------------
Iowa AWOS Reporting Stations: 39 Obs Received: 7645
-----------------------------------------------------------------
High Air Temp[F] : 85.00 [03:58 PM] SHL SHELDON
: 85.00 [04:28 PM] AWG WASHINGTON
Low Air Temp[F] : 46.40 [05:35 AM] LRJ None
High Dew Point[F] : 63.00 [07:59 PM] SDA SHENANDOAH MUNI
: 63.00 [08:58 PM] RDK RED OAK
Low Dew Point[F] : 33.80 [07:15 PM] CAV CLARION
Peak Gust[knots] : 21.00 [12:35 PM] CWI CLINTON
-----------------------------------------------------------------
Iowa RWIS Reporting Stations: 54 Obs Received: 7294
-----------------------------------------------------------------
High Air Temp[F] : 84.90 [03:55 PM] RSCI4 Sioux City (I-29)
Low Air Temp[F] : 45.90 [02:29 AM] RHAI4 Hanlontown (I-35)
High Dew Point[F] : 61.50 [09:29 PM] RBFI4 Bedford
Low Dew Point[F] : 32.70 [05:48 PM] RMCI4 Mason City (I-35)
Peak Gust[knots] : 23.00 [03:46 PM] RDWI4 De Witt (US 30/US 61)
-----------------------------------------------------------------
KCCI SchoolNet Reporting Stations: 68 Obs Received: 92045
-----------------------------------------------------------------
High Air Temp[F] : 85.00 [02:52 PM] SGRI4 Grimes
Low Air Temp[F] : 2.00 [06:09 PM] SWAI4 Wall Lake
High Dew Point[F] : 82.00 [02:42 PM] SDRI4 River Woods
: 82.00 [05:26 PM] SEGI4 Eagle Grove
Low Dew Point[F] : -32.00 [11:49 AM] SOGI4 Ogden
: -32.00 [02:03 PM] SLMI4 Latimer
Peak Gust[knots] : 46.92 [11:42 AM] SLOI4 Lamoni
Max Rainfall [inch] : 0.01 [ ] SMSI4 Manson
-----------------------------------------------------------------
KIMT SchoolNet Reporting Stations: 23 Obs Received: 30600
-----------------------------------------------------------------
High Air Temp[F] : 86.00 [03:44 PM] SWLM5 Rochester (Willow Creek)
: 86.00 [05:20 PM] SFMM5 Rochester (Friedell)
: 86.00 [04:59 PM] STMM5 West Concord
Low Air Temp[F] : 49.00 [05:29 AM] SRVI4 Riceville
: 49.00 [03:57 AM] SASM5 Austin
High Dew Point[F] : 61.00 [10:17 AM] SRVI4 Riceville
Low Dew Point[F] : 39.00 [04:38 PM] SFCM5 Preston
Peak Gust[knots] : 13.00 [10:56 AM] SGMM5 Grand Meadow
Max Rainfall [inch] : 0.20 [ ] SJAM5 Rochester (John Adams)
-----------------------------------------------------------------
KELO WeatherNet Reporting Stations: 46 Obs Received: 26983
-----------------------------------------------------------------
High Air Temp[F] : 87.00 [04:18 PM] SGAS2 Garretson
Low Air Temp[F] : 46.00 [05:35 AM] SWTS2 Watertown
: 46.00 [06:21 AM] SALS2 Alcester
High Dew Point[F] : 81.00 [04:04 PM] SRUM5 Russell
: 81.00 [04:45 PM] SLKS2 Clear Lake
Low Dew Point[F] : -30.00 [02:59 PM] SWAS2 Wall
: -30.00 [03:19 PM] SWTS2 Watertown
: -30.00 [12:55 PM] SYAS2 Yankton
: 2 Other Duplicates Skipped
Peak Gust[knots] : 23.46 [03:05 PM] SRAS2 Rapid City
-----------------------------------------------------------------
Iowa NWS COOP Reporting Stations: 98 Obs Received: 525
-----------------------------------------------------------------
High Air Temp[F] : 83.00 [ ] LWDI4 LOWDEN
: 83.00 [ ] WSHI4 WASHINGTON
: 83.00 [ ] DNNI4 DONNELLSON
: 3 Other Duplicates Skipped
Low Air Temp[F] : 37.00 [ ] MCWI4 WINNEBAGO RVR AT MASON CITY
-----------------------------------------------------------------
Misc Stations Reporting Stations: 5 Obs Received: 1982
-----------------------------------------------------------------
High Air Temp[F] : 80.60 [10:51 AM] OT0002 ISU | AGRONOMY HALL
Low Air Temp[F] : 55.10 [05:57 AM] OT0006 NE Ames
High Dew Point[F] : 58.00 [09:37 AM] OT0007 ISU Agronomy II
Low Dew Point[F] : 40.00 [12:48 PM] RAWDES Desoto
> All data subject to revision and is intended for
> educational use only.
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