Weather updates for GRB TRACON area

Pre-Duty Controller Weather Briefing

Radar/Satellite

Current Weather Conditions

Hover over or click station to get METAR and TAF (if available).

Flight Categories: VFR MVFR IFR LIFR

GRB TAF

Forecast valid from 0100 GMT 18 Apr 2025 to 0000 GMT 19 Apr 2025

Latest observation at 0053 GMT 18 Apr 2025

For situational awareness. Not to be used for flight planning purposes

Potential Impact

None

Slight

Moderate

High

Time	0053Z	18/02Z	18/03Z	18/04Z	18/05Z	18/06Z	18/07Z	18/08Z	18/09Z	18/10Z	18/11Z	18/12Z	18/13Z	18/14Z	18/15Z	18/16Z
VIS	10	6	6 [3]	6 [3]	6 [3]	6 [3]	6	6	4	4	>6	>6	6 [4]	6 [4]	6 [4]	6
CIG	120	40	40 [25]	40 [25]	40 [25]	40 [25]	40	40	25	25	15	15	6 [4]	6 [4]	6 [4]	6
Cover	BKN	OVC	OVC	OVC	OVC	OVC	OVC	OVC	BKN	BKN	BKN	BKN	OVC	OVC	OVC	OVC
FltCat	VFR	VFR	VFR	VFR	VFR	VFR	VFR	VFR	MVFR	MVFR	MVFR	MVFR	IFR	IFR	IFR	IFR
WX		-SHRA	-SHRA [TSRA BR]	-SHRA [TSRA BR]	-SHRA [TSRA BR]	-SHRA [TSRA BR]	-SHRA	-SHRA	BR	BR			-SHRA [-TSRA BR]	-SHRA [-TSRA BR]	-SHRA [-TSRA BR]	-SHRA
WDir	160	190	190	190	190	190	190	190	180	180	190	190	260	260	260	260
WSpd	13	11	11	11	11	11	11	11	8	8	6	6	5	5	5	5
WGust		19	19	19	19	19	19	19

FTUS43 KGRB 180103 CCA
KGRB 180100Z 1801/1824 17015G22KT P6SM SCT040 BKN100 WS020/19045KT
     FM180130 19011G19KT 6SM -SHRA OVC040 WS020/21045KT
      TEMPO 1803/1807 3SM TSRA BR BKN025CB
     FM180900 18008KT 4SM BR BKN025 WS020/23040KT
     FM181100 19006KT P6SM BKN015 WS016/25035KT
     FM181300 26005KT 6SM -SHRA OVC006 PROB30 1813/1816 4SM -TSRA
      BR BKN004CB
     FM182000 32008KT 5SM -SHRA BKN012

TAF Impacts - Surrounding Airports

Potential Impact

None

Slight

Moderate

High

Time	18/03Z	18/04Z	18/05Z	18/06Z	18/07Z	18/08Z	18/09Z	18/10Z	18/11Z	18/12Z	18/13Z	18/14Z	18/15Z	18/16Z
KATW	[WX]	[WX]	[WX]	[WX]							CIG	CIG	CIG	CIG
KCWA	[WX]	[WX]	[WX]	[WX]	CIG	CIG	CIG	CIG	[WX]	[WX]	[WX]	CIG	CIG	CIG
KMTW	[WX]	[WX]	[WX]	[WX]							CIG	CIG	CIG	CIG
KSBM
KAUW	[WX]	[WX]	[WX]	[WX]	CIG	CIG	CIG	CIG	[WX]	[WX]	[WX]	CIG	CIG	CIG

NOTE: TEMPO conditions in [brackets]. Keep in mind TEMPO conditions might be better (lower impact) than prevailing conditions.

Aviation Weather Forecasts

Ceiling, Visibility and Thunderstorm Forecast

KGRB Vertical Wind Profile

Model Trend Forecasts

Model Probability Forecasts

Bar graphs indicate the probability of selected flight category element. The color represents the difference (using 10% thresholds between categories) between the probability and the threshold required to make a categorical forecast. Solid black lines indicate the threshold value at each hour

Bar graphs indicate the probability of selected flight category element. The color represents the difference (using 10% thresholds between categories) between the probability and the threshold required to make a categorical forecast. Solid black lines indicate the threshold value at each hour